xilinx vivado zynq vdma仿真及应用详解（一）
来源：互联网 发布：js隐藏table 编辑：程序博客网 时间：2024/06/06 01:19
很多人用zynq平台做视频图像开发，但是对vdma了解比较少，上手起来稍微有些困难，我针对这一现象，做了一个基于vivado和modelsim的仿真和应用测试工程，并写篇文章做些介绍，希望能对大家有帮助。
一：xilinx vdma IP例化以及接口介绍
上面图片就是在vivado2015.4中例化vdma的界面，首先对参数做些介绍：
Frame Buffers ：选择vdma缓存几帧图像，这里默认是写通道和读通道都设置相同的缓存帧数，具体设置多少帧合适一般根据应用来定，比如读写带宽相同，想用ddr作为一个乒乓buffer，那就可以设置成2帧，写第一个地址，读第二个地址，写第二个地址，读第一个地址。这里面设置几帧，就要在vdma寄存器配置的时候设置几个帧起始地址。
Memory Map Data Width：代表数据到达AXI4总线上的位宽，比如这里设置成64，那就代表M_AXI_XX总线上的数据位宽是64bit，这时候如果stream上的数据是32bit，那vdma内部会有一个带宽转换模块，把数据拼成64bit。
Burst Size ： AXI总线上突发传输的长度，一般设置为16
Stream Data Width：vdma与pl逻辑部分通过axi stream协议交互数据，这里代表stream数据位宽
Line Buffer Depth：vdma内部会有一个行缓存fifo，stream数据会先写入fifo，然后AXI总线逻辑会读出到总线上，这个深度就代表fifo的深度。设置原则（个人理解）：如果AXI总线数据带宽是stream总线数据带宽的1.5倍以上，这个fifo深度可以设置的小一点，如果AXI总线带宽小于1.5倍的stream总线带宽，那fifo的深度至少要是图像一个有效行的一半。
Advanced ： 这里面只说一下Fsync Options，这个信号是什么意思呢，就是告诉vdma什么时候开始运行，一般s2mm通道选择tuser，就是说在tuser 拉高的时候开始传输。mm2s通道，可以选择none，也可以选择 mm2s_fsync，这里介绍一下这两个的区别。
none ： 就是没有同步信号，但这并不是说没有开始信号，而是只要mm2s_stream通道tready拉高，就开始传输，相当于free模式
mm2s_fsync：当这个信号发生一个下降沿的时候开始传输，如果没有这个下降沿，即使mm2s_stream通道tready拉高也不会传输
下面是接口介绍：
M_AXI_XX ： axi4总线接口，用来与ddr交互数据
M_AXIS_XX , S_AXIS_XX ： axi stream接口，用来与pl交互数据
S_AXI_LITE ：控制总线，接到ps的gp口或者写一个axilite master总线去配置
其他接口不做介绍
二：下面开始一步步的详解如何搭建一个vdma的仿真工程
FPGA的开发，离不开仿真，很少有人能直接写好代码上板就成功的，仿真必不可少。但是有些应用要用到vdma，vdma又要和ddr做数据交互，这样做起来就很麻烦了，我这里就实现了一个简单的方法，可以测试vdma，又不用去例化MIG搞什么ddr。下面开始！
系统框图：
（1）因为是要仿真vdma，vdma顾名思义就是video dma，那肯定要先做一个视频模块，注意，我这里除了vdma和fifo用xilinx的ip。其他的都不用ip，这样更通用性。
我这里就把这个视频发生模块叫做sensor，可以理解为xilin的tpg模块，sensor模块的接口如下：
<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">module</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">sensor</span> </span>( input rst, input clk, output reg vsync, output reg hsync, output reg de, output reg vblank, output reg[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]pix_out);parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_ACT_W</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>;parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_ACT_H</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>;parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_WIDTH</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">800</span>;parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_HEIGHT</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">600</span>;parameter <span class="hljs-constant" style="box-sizing: border-box;">H_START</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">80</span>; parameter <span class="hljs-constant" style="box-sizing: border-box;">V_START</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">60</span>; </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li></ul>
我这里构建了一个图像传感器，总像素数是600*800，有效像素是 480*640，水平有效像素开始位置是80，垂直有效像素开始位置是60，这个模块会读取一个本地图像数据，rgb格式，这里为了测试方便，直接把像素输出位宽设置为32bit。
（2）video转axis模块，相当于 xilinx的vid in to stream模块，接口如下：
<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">module</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">video2axis</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#</span></span>（ parameter <span class="hljs-constant" style="box-sizing: border-box;">DW</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">WIDTH</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">HEIGHT</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>)( input axis_clk, input axis_aresetn, <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> axis input reg_axis_s2mm_start, output [<span class="hljs-constant" style="box-sizing: border-box;">DW</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] m_axis_tdata, output [<span class="hljs-constant" style="box-sizing: border-box;">DW</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] m_axis_tkeep, output reg m_axis_tvalid, output m_axis_tlast, output m_axis_tuser, input m_axis_tready, <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> video data input video_clk, input video_rst, input video_hsync, input video_vsync, input video_hblank, input video_vblank, input video_de, input [<span class="hljs-constant" style="box-sizing: border-box;">DW</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] video_data);</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li></ul>
这个模块主要用到一个fifo来做数据缓存，只要注意一下stream协议的握手操作即可，由于stream协议比较简单，这里就不多说了。至此，video数据就转换到了stream数据。
（3）axis转video模块，接口如下：
<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">module</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">axis2video</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#</span></span>( parameter <span class="hljs-constant" style="box-sizing: border-box;">DW</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">WIDTH</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">HEIGHT</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>)( input axis_clk, input axis_aresetn, <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> axis input reg_axis_mm2s_start, input [<span class="hljs-constant" style="box-sizing: border-box;">DW</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] s_axis_tdata, input s_axis_tvalid, input s_axis_tlast, input s_axis_tuser, output reg s_axis_tready, <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> video data input video_clk, input video_rst, input video_hsync_i, input video_vsync_i, input video_hblank_i, input video_vblank_i, input video_de_i, output video_hsync_o, output video_vsync_o, output video_hblank_o, output video_vblank_o, output video_de_o, output reg[<span class="hljs-constant" style="box-sizing: border-box;">DW</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] video_data);</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li></ul>
这个模块相当于xilinx的vid out模块，我这里是简化版的，xilinx的ip写的太复杂了，而且不容易用起来，其实也就是用一个fifo做数据缓存，然后根据外部video时序从fifo读出到输出。
（4）video timing gen模块，接口如下：
<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">module</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">video_timing_gen</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#</span></span>( parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_ACT_W</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_ACT_H</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_WIDTH</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">800</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_HEIGHT</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">600</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_HSYNC_START</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_HSYNC_STOP</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">40</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_VSYNC_START</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, parameter <span class="hljs-constant" style="box-sizing: border-box;">SENSOR_VSYNC_STOP</span> = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>)( input rst_n, input video_clk, input [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]reg_h_start, input [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]reg_v_start, output reg vsync, output reg hsync, output reg de, output reg vblank, output reg hblank);</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li></ul>
此模块产生视频时序，提供给 axis2video模块，相当于xilinx的vtc模块。
（5） axi slave模块，接口如下：
<code class="hljs mel has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">`define C_S_AXI_ADDR_WIDTH 32module axi_slave #( parameter integer C_S_AXI_ID_WIDTH = 6, parameter integer C_S_AXI_DATA_WIDTH = 32) ( input wire S_AXI_ACLK, input wire S_AXI_ARESETN, input wire [C_S_AXI_ID_WIDTH-1:0] S_AXI_AWID, input wire [`</span>C_S_AXI_ADDR_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_AWADDR, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_AWLEN, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_AWSIZE, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_AWBURST, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_AWVALID, output <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_AWREADY, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [C_S_AXI_DATA_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_WDATA, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [C_S_AXI_DATA_WIDTH/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_WSTRB, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_WLAST, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_WVALID, output <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_WREADY, output <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [C_S_AXI_ID_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_BID, output <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_BRESP, output <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_BVALID, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> S_AXI_BREADY, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [C_S_AXI_ID_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_ARID, input <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">wire</span> [<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">`C_S_AXI_ADDR_WIDTH-1:0] S_AXI_ARADDR, input wire [7:0] S_AXI_ARLEN, input wire [2:0] S_AXI_ARSIZE, input wire [1:0] S_AXI_ARBURST, input wire S_AXI_ARVALID, output wire S_AXI_ARREADY, output wire [C_S_AXI_ID_WIDTH-1:0] S_AXI_RID, output wire [C_S_AXI_DATA_WIDTH-1:0] S_AXI_RDATA, output wire [1:0] S_AXI_RRESP, output wire S_AXI_RLAST, output wire S_AXI_RVALID, input wire S_AXI_RREADY);</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li></ul>
这块模块是根据xilinx官方提供的参考设计基础上修改而来的（xapp1168），协议部分完全没有改动，这里拿他当做ddr，具体修改是这样的，
reg [31:0] mem [32’h01000000:0];
用寄存器组来模拟ddr
此模块会根据axi master的时序来计算出要读写的地址
assign write_mem_address = axi_awv_awr_flag ? axi_awaddr: 0;
assign read_mem_address = axi_arv_arr_flag ? axi_araddr: 0;
写操作：mem[write_mem_address>>2] <= #1 S_AXI_WDATA;
读操作：mem_data_out <= mem[read_mem_address>>2];
做此修改以后，这个模块就可以当做ddr来用，为仿真提供了很大的方便
（6）vdma模块，这个就用xilinx的vdma ip，注意，我这里不是在block design里面例化，所以端口需要自己在hdl里面做连接的。
这里还有一个模块是 axi lite master模块，作用是用来配置vdma的寄存器，这个模块也是xilinx提供的，只需要做小量修改即可
<code class="hljs vhdl has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">always @(write_index) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">case</span> (write_index) // AXI VDMA <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> Set Up <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43000030</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c000ac</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c000b0</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c000a8</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c000a4</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">6</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c000a0</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43000000</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c0005c</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">9</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c00060</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c00058</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">11</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c00054</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h43c00050</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">default</span>: awaddr <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00000000</span>; endcase <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(write_index) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">case</span> (write_index) // AXI VDMA <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> Set Up <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00000003</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00800000</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00000000</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">6</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00000003</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00000000</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">9</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00800000</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">11</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>; <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">default</span>: wdata <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span><span class="hljs-attribute" style="box-sizing: border-box;">'h00000000</span>; endcase <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li></ul>
我这里是把ddr作为一个乒乓buffer，所以vdma缓存帧数选择2帧，寄存器配置里面就配置两个传输地址。这样就完成了对vdma的寄存器配置。
编写test bench top文件，把这些模块连接起来，至此，仿真工程就全部写好了。
三：仿真
（1）vdma工作流程介绍
第一步，对vdma寄存器进行配置，并打开使能，这时候vdma处于待命状态，什么时候开始传输呢，下面详细介绍
对于S2MM通道：之前在讲vdma配置的时候有一个Advanced选项，里面有Fsync Options选项，可选none，s2mm_fsync，s2mm_tuer，三种同步模式。
none就是只要vdma就绪，就立马准备接收数据，不需要同步信号。
s2mm_fsync，当选择此模式时，vdma 模块会有一个s2mm_fsync引脚，一般情况下是把视频帧同步信号连到这上面，当检测到s2mm_fsync引脚有一个下降沿的时候，vdma正式进入传输状态。
s2mm_tuer，这个信号和s2mm_fsync这个信号类似，但他是在stream协议里面的，vdma检测到s2mm_tuer拉高以后（tuser只在一帧数据的第一个像素位置拉高），正式进入传输状态
对于MM2S通道，同样在vdma配置的Advanced选项里面有 none，mm2s_fsync两种选择模式。
none不需要同步信号，只要axis_mm2s通道的tready拉高，就开始从ddr读取数据进行传输，选择这种模式一般主要是把ddr里面的数据读到pl里面进行处理，而不是转成视频
mm2s_fsync，选择此同步模式，一般是把ddr的数据转成视频数据，注意，这里重点讲这个同步模式，当vdma的读通道选择此同步模式的时候，vdma模块会有一个mm2s_fsync信号，这个信号在读操作中非常重要。当vdma寄存器配置完成并开启传输，mm2s通道进入等待过程，一直等到mm2s引脚信号出现一个下降沿，这时候vdma启动读操作，会从ddr预读一些数据到内部linebuffer，等到axis_mm2s通道的tready信号拉高，数据就开始传输，进入axis2video模块的fifo，当axis2video内部fifo满了以后，会拉低tready，这时候就会反馈到vdma，暂停读操作，一直等到axis2video模块的视频时序输入数据有效信号，这时候视频开始输出，axis2video内部fifo数据减少，axis_mm2s通道开始恢复传输，继续从vdma读出数据，vdma再通过axi总线从ddr读取数据，如此反复，完成ddr数据到video数据的转换
（2）仿真实践
首先在vivado平台例化一个vdma ip，然后添加进上述的各个模块，代码层级如下： 
在tb_top里面对各个模块做连接，这部分源码如下：
<code class="hljs fsharp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">`timescale <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>ns / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>ps<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//////////////////////////////////////////////////////////////////////////////////</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// </span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// Engineer: EEPROM</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// </span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//////////////////////////////////////////////////////////////////////////////////</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">module</span> tb_top();reg reset = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b1;reg video_clk = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b0;reg axis_clk = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b0;reg axi_clk = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b0;wire axi_lite_clk = video_clk;wire sensor_vsync;wire sensor_hsync;wire sensor_de;wire sensor_vblank;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]sensor_data;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axis_s2mm_tdata;wire axis_s2mm_tvalid;wire axis_s2mm_tlast;wire axis_s2mm_tuser;wire axis_s2mm_tready;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axis_mm2s_tdata;wire axis_mm2s_tvalid;wire axis_mm2s_tlast;wire axis_mm2s_tuser;wire axis_mm2s_tready;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//axi lite</span>wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_araddr;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_arprot;wire axi_lite_master_arready;wire axi_lite_master_arvalid;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_awaddr;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_awprot;wire axi_lite_master_awready;wire axi_lite_master_awvalid;wire axi_lite_master_bready;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_bresp;wire axi_lite_master_bvalid;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_rdata;wire axi_lite_master_rready;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_rresp;wire axi_lite_master_rvalid;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_wdata;wire axi_lite_master_wready;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]axi_lite_master_wstrb;wire axi_lite_master_wvalid;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// axi</span>wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awaddr ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awburst;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awcache;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awid ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awlen ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awlock ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awprot ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awqos ;wire S_AXI_awready;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_awsize ;wire S_AXI_awvalid;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_bid ;wire S_AXI_bready ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_bresp ;wire S_AXI_bvalid ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_wdata ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_wid ;wire S_AXI_wlast ;wire S_AXI_wready ;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_wstrb ;wire S_AXI_wvalid ;wire S_AXI_arready;wire S_AXI_rlast;wire S_AXI_rvalid;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_rresp;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_rdata;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_rid;wire S_AXI_arvalid; wire S_AXI_rready;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arburst;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arlock;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arsize;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arprot;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_araddr;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arcache;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arlen;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arqos;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] S_AXI_arid;initial <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span>#<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">100</span>;reset=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always # <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span> video_clk = ~video_clk;always # <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span> axis_clk = ~axis_clk;always # <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> axi_clk = ~axi_clk;sensor u_sensor( .rst (reset), .clk (video_clk), .vsync (sensor_vsync), .hsync (sensor_hsync), .de (sensor_de), .vblank (sensor_vblank), .pix_out (sensor_data));video2axis u_video2axis( .axis_clk (axis_clk), .axis_aresetn (!reset), .reg_axis_start (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b1), .m_axis_tdata (axis_s2mm_tdata ), .m_axis_tkeep (axis_s2mm_tkeep ), .m_axis_tvalid (axis_s2mm_tvalid), .m_axis_tlast (axis_s2mm_tlast ), .m_axis_tuser (axis_s2mm_tuser ), .m_axis_tready (axis_s2mm_tready), .video_clk (video_clk), .video_rst (reset), .video_hsync (sensor_hsync), .video_vsync (sensor_vsync), .video_hblank (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b0), .video_vblank (sensor_vblank), .video_de (sensor_de), .video_data (sensor_data));wire vid_hsync_i;wire vid_vsync_i;wire vid_hblank_i;wire vid_vblank_i;wire vid_de_i;wire vid_hsync_o;wire vid_vsync_o;wire vid_hblank_o;wire vid_vblank_o;wire vid_de_o;wire [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] vid_video_o;video_timing_gen #( .SENSOR_ACT_W (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>), .SENSOR_ACT_H (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>), .SENSOR_WIDTH (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">800</span>), .SENSOR_HEIGHT (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">600</span>), .SENSOR_HSYNC_START (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> ), .SENSOR_HSYNC_STOP (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">40</span>), .SENSOR_VSYNC_START (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> ), .SENSOR_VSYNC_STOP (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span> ))u_video_timing_gen( .rst_n (!reset), .video_clk (video_clk), .reg_h_start (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">80</span>), .reg_v_start (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">60</span>), .vsync (vid_vsync_i), .hsync (vid_hsync_i), .de (vid_de_i), .vblank (vid_vblank_i), .hblank (vid_hblank_i));axis2video u_axis2video( .axis_clk (axis_clk), .axis_aresetn (!reset), .reg_axis_mm2s_start (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b1), .s_axis_tdata (axis_mm2s_tdata), .s_axis_tvalid (axis_mm2s_tvalid), .s_axis_tlast (axis_mm2s_tlast), .s_axis_tuser (axis_mm2s_tuser), .s_axis_tready (axis_mm2s_tready), .video_clk (video_clk), .video_rst (reset), .video_hsync_i (vid_hsync_i), .video_vsync_i (vid_vsync_i), .video_hblank_i (vid_hblank_i), .video_vblank_i (vid_vblank_i), .video_de_i (vid_de_i), .video_hsync_o (vid_hsync_o), .video_vsync_o (vid_vsync_o), .video_hblank_o (vid_hblank_o), .video_vblank_o (vid_vblank_o), .video_de_o (vid_de_o), .video_data (vid_video_o));axi_lite_master u_axi_lite_master ( .M_AXI_ACLK (axi_lite_clk ), .M_AXI_ARESETN (!reset ), .M_AXI_AWADDR (axi_lite_master_awaddr ), <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//[8:0]</span> .M_AXI_AWPROT ( ), .M_AXI_AWVALID (axi_lite_master_awvalid ), .M_AXI_AWREADY (axi_lite_master_awready ), .M_AXI_WDATA (axi_lite_master_wdata ), .M_AXI_WSTRB ( ), .M_AXI_WVALID (axi_lite_master_wvalid ), .M_AXI_WREADY (axi_lite_master_wready ), .M_AXI_BRESP (axi_lite_master_bresp ), .M_AXI_BVALID (axi_lite_master_bvalid ), .M_AXI_BREADY (axi_lite_master_bready ), .M_AXI_ARADDR (axi_lite_master_araddr ), <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//[8:0]</span> .M_AXI_ARPROT ( ), .M_AXI_ARVALID (axi_lite_master_arvalid ), .M_AXI_ARREADY (axi_lite_master_arready ), .M_AXI_RDATA (axi_lite_master_rdata ), .M_AXI_RRESP (axi_lite_master_rresp ), .M_AXI_RVALID (axi_lite_master_rvalid ), .M_AXI_RREADY (axi_lite_master_rready ), .DDRX_PHY_INIT_DONE(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b1), .DONE_SUCCESS ( ));axi_vdma_test u_axi_vdma_test ( .s_axi_lite_aclk(axi_lite_clk), .m_axi_mm2s_aclk(axi_clk), .m_axis_mm2s_aclk(axis_clk), .m_axi_s2mm_aclk(axi_clk), .s_axis_s2mm_aclk(axis_clk), .axi_resetn(!reset), .s_axi_lite_awvalid(axi_lite_master_awvalid), .s_axi_lite_awready(axi_lite_master_awready), .s_axi_lite_awaddr (axi_lite_master_awaddr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]), .s_axi_lite_wvalid (axi_lite_master_wvalid), .s_axi_lite_wready (axi_lite_master_wready), .s_axi_lite_wdata (axi_lite_master_wdata), .s_axi_lite_bresp (axi_lite_master_bresp), .s_axi_lite_bvalid (axi_lite_master_bvalid), .s_axi_lite_bready (axi_lite_master_bready), .s_axi_lite_arvalid(axi_lite_master_arvalid), .s_axi_lite_arready(axi_lite_master_arready), .s_axi_lite_araddr (axi_lite_master_araddr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]), .s_axi_lite_rvalid (axi_lite_master_rvalid), .s_axi_lite_rready (axi_lite_master_rready), .s_axi_lite_rdata (axi_lite_master_rdata), .s_axi_lite_rresp (axi_lite_master_rresp), <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//.s2mm_frame_ptr_in(), </span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//.s2mm_frame_ptr_out(), </span> .m_axi_s2mm_awaddr (S_AXI_awaddr), .m_axi_s2mm_awlen (S_AXI_awlen), .m_axi_s2mm_awsize (S_AXI_awsize), .m_axi_s2mm_awburst(S_AXI_awburst), .m_axi_s2mm_awprot (S_AXI_awprot), .m_axi_s2mm_awcache(S_AXI_awcache), .m_axi_s2mm_awvalid(S_AXI_awvalid), .m_axi_s2mm_awready(S_AXI_awready), .m_axi_s2mm_wdata (S_AXI_wdata), .m_axi_s2mm_wstrb (S_AXI_wstrb), .m_axi_s2mm_wlast (S_AXI_wlast), .m_axi_s2mm_wvalid (S_AXI_wvalid), .m_axi_s2mm_wready (S_AXI_wready), .m_axi_s2mm_bresp (S_AXI_bresp), .m_axi_s2mm_bvalid (S_AXI_bvalid), .m_axi_s2mm_bready (S_AXI_bready), .m_axi_mm2s_araddr (S_AXI_araddr), .m_axi_mm2s_arlen (S_AXI_arlen), .m_axi_mm2s_arsize (S_AXI_arsize), .m_axi_mm2s_arburst(S_AXI_arburst), .m_axi_mm2s_arprot (S_AXI_arprot), .m_axi_mm2s_arcache(S_AXI_arcache), .m_axi_mm2s_arvalid(S_AXI_arvalid), .m_axi_mm2s_arready(S_AXI_arready), .m_axi_mm2s_rdata (S_AXI_rdata), .m_axi_mm2s_rresp (S_AXI_rresp), .m_axi_mm2s_rlast (S_AXI_rlast), .m_axi_mm2s_rvalid (S_AXI_rvalid), .m_axi_mm2s_rready (S_AXI_rready), .s_axis_s2mm_tdata(axis_s2mm_tdata), .s_axis_s2mm_tkeep(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>'b1111), .s_axis_s2mm_tuser(axis_s2mm_tuser), .s_axis_s2mm_tvalid(axis_s2mm_tvalid), .s_axis_s2mm_tready(axis_s2mm_tready), .s_axis_s2mm_tlast(axis_s2mm_tlast), .m_axis_mm2s_tdata(axis_mm2s_tdata), .m_axis_mm2s_tkeep(), .m_axis_mm2s_tuser(axis_mm2s_tuser), .m_axis_mm2s_tvalid(axis_mm2s_tvalid), .m_axis_mm2s_tready(axis_mm2s_tready), .m_axis_mm2s_tlast(axis_mm2s_tlast), .mm2s_fsync(!vid_vsync_i), .s2mm_introut() );axi_slave u_axi_slave( .S_AXI_ACLK (axi_clk), .S_AXI_ARESETN (!reset), .S_AXI_AWID (S_AXI_awid ), .S_AXI_AWADDR (S_AXI_awaddr ), .S_AXI_AWLEN (S_AXI_awlen ), .S_AXI_AWSIZE (S_AXI_awsize ), .S_AXI_AWBURST (S_AXI_awburst), .S_AXI_AWVALID (S_AXI_awvalid), .S_AXI_AWREADY (S_AXI_awready), .S_AXI_WDATA (S_AXI_wdata ), .S_AXI_WSTRB (S_AXI_wstrb ), .S_AXI_WLAST (S_AXI_wlast ), .S_AXI_WVALID (S_AXI_wvalid ), .S_AXI_WREADY (S_AXI_wready ), .S_AXI_BID (S_AXI_bid ), .S_AXI_BRESP (S_AXI_bresp ), .S_AXI_BVALID (S_AXI_bvalid ), .S_AXI_BREADY (S_AXI_bready ), .S_AXI_ARID (S_AXI_arid ), .S_AXI_ARADDR (S_AXI_araddr ), .S_AXI_ARLEN ({<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>'b0,S_AXI_arlen} ), .S_AXI_ARSIZE (S_AXI_arsize ), .S_AXI_ARBURST (S_AXI_arburst), .S_AXI_ARVALID (S_AXI_arvalid), .S_AXI_ARREADY (S_AXI_arready), .S_AXI_RID (S_AXI_rid ), .S_AXI_RDATA (S_AXI_rdata ), .S_AXI_RRESP (S_AXI_rresp ), .S_AXI_RLAST (S_AXI_rlast ), .S_AXI_RVALID (S_AXI_rvalid ), .S_AXI_RREADY (S_AXI_rready ));integer file_fd;reg vblank_o_r;reg [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] frame_cnt=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;always @(posedge video_clk) vblank_o_r <= vid_vblank_o;always @(posedge video_clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>((~vblank_o_r) & vid_vblank_o) frame_cnt <= frame_cnt + <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>'b1;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>initial <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> file_fd = $fopen(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"output.rgb"</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"wb"</span>);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge video_clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(frame_cnt == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> && vid_de_o) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> $fwrite(file_fd,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"%c%c%c%c"</span>,vid_video_o[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">24</span>],vid_video_o[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">23</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>],vid_video_o[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">15</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>],vid_video_o[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(frame_cnt == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> $fclose(file_fd); $stop; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>endmodule</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li><li style="box-sizing: border-box; padding: 0px 5px;">136</li><li style="box-sizing: border-box; padding: 0px 5px;">137</li><li style="box-sizing: border-box; padding: 0px 5px;">138</li><li style="box-sizing: border-box; padding: 0px 5px;">139</li><li style="box-sizing: border-box; padding: 0px 5px;">140</li><li style="box-sizing: border-box; padding: 0px 5px;">141</li><li style="box-sizing: border-box; padding: 0px 5px;">142</li><li style="box-sizing: border-box; padding: 0px 5px;">143</li><li style="box-sizing: border-box; padding: 0px 5px;">144</li><li style="box-sizing: border-box; padding: 0px 5px;">145</li><li style="box-sizing: border-box; padding: 0px 5px;">146</li><li style="box-sizing: border-box; padding: 0px 5px;">147</li><li style="box-sizing: border-box; padding: 0px 5px;">148</li><li style="box-sizing: border-box; padding: 0px 5px;">149</li><li style="box-sizing: border-box; padding: 0px 5px;">150</li><li style="box-sizing: border-box; padding: 0px 5px;">151</li><li style="box-sizing: border-box; padding: 0px 5px;">152</li><li style="box-sizing: border-box; padding: 0px 5px;">153</li><li style="box-sizing: border-box; padding: 0px 5px;">154</li><li style="box-sizing: border-box; padding: 0px 5px;">155</li><li style="box-sizing: border-box; padding: 0px 5px;">156</li><li style="box-sizing: border-box; padding: 0px 5px;">157</li><li style="box-sizing: border-box; padding: 0px 5px;">158</li><li style="box-sizing: border-box; padding: 0px 5px;">159</li><li style="box-sizing: border-box; padding: 0px 5px;">160</li><li style="box-sizing: border-box; padding: 0px 5px;">161</li><li style="box-sizing: border-box; padding: 0px 5px;">162</li><li style="box-sizing: border-box; padding: 0px 5px;">163</li><li style="box-sizing: border-box; padding: 0px 5px;">164</li><li style="box-sizing: border-box; padding: 0px 5px;">165</li><li style="box-sizing: border-box; padding: 0px 5px;">166</li><li style="box-sizing: border-box; padding: 0px 5px;">167</li><li style="box-sizing: border-box; padding: 0px 5px;">168</li><li style="box-sizing: border-box; padding: 0px 5px;">169</li><li style="box-sizing: border-box; padding: 0px 5px;">170</li><li style="box-sizing: border-box; padding: 0px 5px;">171</li><li style="box-sizing: border-box; padding: 0px 5px;">172</li><li style="box-sizing: border-box; padding: 0px 5px;">173</li><li style="box-sizing: border-box; padding: 0px 5px;">174</li><li style="box-sizing: border-box; padding: 0px 5px;">175</li><li style="box-sizing: border-box; padding: 0px 5px;">176</li><li style="box-sizing: border-box; padding: 0px 5px;">177</li><li style="box-sizing: border-box; padding: 0px 5px;">178</li><li style="box-sizing: border-box; padding: 0px 5px;">179</li><li style="box-sizing: border-box; padding: 0px 5px;">180</li><li style="box-sizing: border-box; padding: 0px 5px;">181</li><li style="box-sizing: border-box; padding: 0px 5px;">182</li><li style="box-sizing: border-box; padding: 0px 5px;">183</li><li style="box-sizing: border-box; padding: 0px 5px;">184</li><li style="box-sizing: border-box; padding: 0px 5px;">185</li><li style="box-sizing: border-box; padding: 0px 5px;">186</li><li style="box-sizing: border-box; padding: 0px 5px;">187</li><li style="box-sizing: border-box; padding: 0px 5px;">188</li><li style="box-sizing: border-box; padding: 0px 5px;">189</li><li style="box-sizing: border-box; padding: 0px 5px;">190</li><li style="box-sizing: border-box; padding: 0px 5px;">191</li><li style="box-sizing: border-box; padding: 0px 5px;">192</li><li style="box-sizing: border-box; padding: 0px 5px;">193</li><li style="box-sizing: border-box; padding: 0px 5px;">194</li><li style="box-sizing: border-box; padding: 0px 5px;">195</li><li style="box-sizing: border-box; padding: 0px 5px;">196</li><li style="box-sizing: border-box; padding: 0px 5px;">197</li><li style="box-sizing: border-box; padding: 0px 5px;">198</li><li style="box-sizing: border-box; padding: 0px 5px;">199</li><li style="box-sizing: border-box; padding: 0px 5px;">200</li><li style="box-sizing: border-box; padding: 0px 5px;">201</li><li style="box-sizing: border-box; padding: 0px 5px;">202</li><li style="box-sizing: border-box; padding: 0px 5px;">203</li><li style="box-sizing: border-box; padding: 0px 5px;">204</li><li style="box-sizing: border-box; padding: 0px 5px;">205</li><li style="box-sizing: border-box; padding: 0px 5px;">206</li><li style="box-sizing: border-box; padding: 0px 5px;">207</li><li style="box-sizing: border-box; padding: 0px 5px;">208</li><li style="box-sizing: border-box; padding: 0px 5px;">209</li><li style="box-sizing: border-box; padding: 0px 5px;">210</li><li style="box-sizing: border-box; padding: 0px 5px;">211</li><li style="box-sizing: border-box; padding: 0px 5px;">212</li><li style="box-sizing: border-box; padding: 0px 5px;">213</li><li style="box-sizing: border-box; padding: 0px 5px;">214</li><li style="box-sizing: border-box; padding: 0px 5px;">215</li><li style="box-sizing: border-box; padding: 0px 5px;">216</li><li style="box-sizing: border-box; padding: 0px 5px;">217</li><li style="box-sizing: border-box; padding: 0px 5px;">218</li><li style="box-sizing: border-box; padding: 0px 5px;">219</li><li style="box-sizing: border-box; padding: 0px 5px;">220</li><li style="box-sizing: border-box; padding: 0px 5px;">221</li><li style="box-sizing: border-box; padding: 0px 5px;">222</li><li style="box-sizing: border-box; padding: 0px 5px;">223</li><li style="box-sizing: border-box; padding: 0px 5px;">224</li><li style="box-sizing: border-box; padding: 0px 5px;">225</li><li style="box-sizing: border-box; padding: 0px 5px;">226</li><li style="box-sizing: border-box; padding: 0px 5px;">227</li><li style="box-sizing: border-box; padding: 0px 5px;">228</li><li style="box-sizing: border-box; padding: 0px 5px;">229</li><li style="box-sizing: border-box; padding: 0px 5px;">230</li><li style="box-sizing: border-box; padding: 0px 5px;">231</li><li style="box-sizing: border-box; padding: 0px 5px;">232</li><li style="box-sizing: border-box; padding: 0px 5px;">233</li><li style="box-sizing: border-box; padding: 0px 5px;">234</li><li style="box-sizing: border-box; padding: 0px 5px;">235</li><li style="box-sizing: border-box; padding: 0px 5px;">236</li><li style="box-sizing: border-box; padding: 0px 5px;">237</li><li style="box-sizing: border-box; padding: 0px 5px;">238</li><li style="box-sizing: border-box; padding: 0px 5px;">239</li><li style="box-sizing: border-box; padding: 0px 5px;">240</li><li style="box-sizing: border-box; padding: 0px 5px;">241</li><li style="box-sizing: border-box; padding: 0px 5px;">242</li><li style="box-sizing: border-box; padding: 0px 5px;">243</li><li style="box-sizing: border-box; padding: 0px 5px;">244</li><li style="box-sizing: border-box; padding: 0px 5px;">245</li><li style="box-sizing: border-box; padding: 0px 5px;">246</li><li style="box-sizing: border-box; padding: 0px 5px;">247</li><li style="box-sizing: border-box; padding: 0px 5px;">248</li><li style="box-sizing: border-box; padding: 0px 5px;">249</li><li style="box-sizing: border-box; padding: 0px 5px;">250</li><li style="box-sizing: border-box; padding: 0px 5px;">251</li><li style="box-sizing: border-box; padding: 0px 5px;">252</li><li style="box-sizing: border-box; padding: 0px 5px;">253</li><li style="box-sizing: border-box; padding: 0px 5px;">254</li><li style="box-sizing: border-box; padding: 0px 5px;">255</li><li style="box-sizing: border-box; padding: 0px 5px;">256</li><li style="box-sizing: border-box; padding: 0px 5px;">257</li><li style="box-sizing: border-box; padding: 0px 5px;">258</li><li style="box-sizing: border-box; padding: 0px 5px;">259</li><li style="box-sizing: border-box; padding: 0px 5px;">260</li><li style="box-sizing: border-box; padding: 0px 5px;">261</li><li style="box-sizing: border-box; padding: 0px 5px;">262</li><li style="box-sizing: border-box; padding: 0px 5px;">263</li><li style="box-sizing: border-box; padding: 0px 5px;">264</li><li style="box-sizing: border-box; padding: 0px 5px;">265</li><li style="box-sizing: border-box; padding: 0px 5px;">266</li><li style="box-sizing: border-box; padding: 0px 5px;">267</li><li style="box-sizing: border-box; padding: 0px 5px;">268</li><li style="box-sizing: border-box; padding: 0px 5px;">269</li><li style="box-sizing: border-box; padding: 0px 5px;">270</li><li style="box-sizing: border-box; padding: 0px 5px;">271</li><li style="box-sizing: border-box; padding: 0px 5px;">272</li><li style="box-sizing: border-box; padding: 0px 5px;">273</li><li style="box-sizing: border-box; padding: 0px 5px;">274</li><li style="box-sizing: border-box; padding: 0px 5px;">275</li><li style="box-sizing: border-box; padding: 0px 5px;">276</li><li style="box-sizing: border-box; padding: 0px 5px;">277</li><li style="box-sizing: border-box; padding: 0px 5px;">278</li><li style="box-sizing: border-box; padding: 0px 5px;">279</li><li style="box-sizing: border-box; padding: 0px 5px;">280</li><li style="box-sizing: border-box; padding: 0px 5px;">281</li><li style="box-sizing: border-box; padding: 0px 5px;">282</li><li style="box-sizing: border-box; padding: 0px 5px;">283</li><li style="box-sizing: border-box; padding: 0px 5px;">284</li><li style="box-sizing: border-box; padding: 0px 5px;">285</li><li style="box-sizing: border-box; padding: 0px 5px;">286</li><li style="box-sizing: border-box; padding: 0px 5px;">287</li><li style="box-sizing: border-box; padding: 0px 5px;">288</li><li style="box-sizing: border-box; padding: 0px 5px;">289</li><li style="box-sizing: border-box; padding: 0px 5px;">290</li><li style="box-sizing: border-box; padding: 0px 5px;">291</li><li style="box-sizing: border-box; padding: 0px 5px;">292</li><li style="box-sizing: border-box; padding: 0px 5px;">293</li><li style="box-sizing: border-box; padding: 0px 5px;">294</li><li style="box-sizing: border-box; padding: 0px 5px;">295</li><li style="box-sizing: border-box; padding: 0px 5px;">296</li><li style="box-sizing: border-box; padding: 0px 5px;">297</li><li style="box-sizing: border-box; padding: 0px 5px;">298</li><li style="box-sizing: border-box; padding: 0px 5px;">299</li><li style="box-sizing: border-box; padding: 0px 5px;">300</li><li style="box-sizing: border-box; padding: 0px 5px;">301</li><li style="box-sizing: border-box; padding: 0px 5px;">302</li><li style="box-sizing: border-box; padding: 0px 5px;">303</li><li style="box-sizing: border-box; padding: 0px 5px;">304</li><li style="box-sizing: border-box; padding: 0px 5px;">305</li><li style="box-sizing: border-box; padding: 0px 5px;">306</li><li style="box-sizing: border-box; padding: 0px 5px;">307</li><li style="box-sizing: border-box; padding: 0px 5px;">308</li><li style="box-sizing: border-box; padding: 0px 5px;">309</li><li style="box-sizing: border-box; padding: 0px 5px;">310</li><li style="box-sizing: border-box; padding: 0px 5px;">311</li><li style="box-sizing: border-box; padding: 0px 5px;">312</li><li style="box-sizing: border-box; padding: 0px 5px;">313</li><li style="box-sizing: border-box; padding: 0px 5px;">314</li><li style="box-sizing: border-box; padding: 0px 5px;">315</li><li style="box-sizing: border-box; padding: 0px 5px;">316</li><li style="box-sizing: border-box; padding: 0px 5px;">317</li><li style="box-sizing: border-box; padding: 0px 5px;">318</li><li style="box-sizing: border-box; padding: 0px 5px;">319</li><li style="box-sizing: border-box; padding: 0px 5px;">320</li><li style="box-sizing: border-box; padding: 0px 5px;">321</li><li style="box-sizing: border-box; padding: 0px 5px;">322</li><li style="box-sizing: border-box; padding: 0px 5px;">323</li><li style="box-sizing: border-box; padding: 0px 5px;">324</li><li style="box-sizing: border-box; padding: 0px 5px;">325</li><li style="box-sizing: border-box; padding: 0px 5px;">326</li><li style="box-sizing: border-box; padding: 0px 5px;">327</li><li style="box-sizing: border-box; padding: 0px 5px;">328</li><li style="box-sizing: border-box; padding: 0px 5px;">329</li><li style="box-sizing: border-box; padding: 0px 5px;">330</li><li style="box-sizing: border-box; padding: 0px 5px;">331</li><li style="box-sizing: border-box; padding: 0px 5px;">332</li><li style="box-sizing: border-box; padding: 0px 5px;">333</li><li style="box-sizing: border-box; padding: 0px 5px;">334</li><li style="box-sizing: border-box; padding: 0px 5px;">335</li><li style="box-sizing: border-box; padding: 0px 5px;">336</li><li style="box-sizing: border-box; padding: 0px 5px;">337</li><li style="box-sizing: border-box; padding: 0px 5px;">338</li><li style="box-sizing: border-box; padding: 0px 5px;">339</li><li style="box-sizing: border-box; padding: 0px 5px;">340</li><li style="box-sizing: border-box; padding: 0px 5px;">341</li><li style="box-sizing: border-box; padding: 0px 5px;">342</li><li style="box-sizing: border-box; padding: 0px 5px;">343</li><li style="box-sizing: border-box; padding: 0px 5px;">344</li><li style="box-sizing: border-box; padding: 0px 5px;">345</li><li style="box-sizing: border-box; padding: 0px 5px;">346</li><li style="box-sizing: border-box; padding: 0px 5px;">347</li><li style="box-sizing: border-box; padding: 0px 5px;">348</li><li style="box-sizing: border-box; padding: 0px 5px;">349</li><li style="box-sizing: border-box; padding: 0px 5px;">350</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li><li style="box-sizing: border-box; padding: 0px 5px;">136</li><li style="box-sizing: border-box; padding: 0px 5px;">137</li><li style="box-sizing: border-box; padding: 0px 5px;">138</li><li style="box-sizing: border-box; padding: 0px 5px;">139</li><li style="box-sizing: border-box; padding: 0px 5px;">140</li><li style="box-sizing: border-box; padding: 0px 5px;">141</li><li style="box-sizing: border-box; padding: 0px 5px;">142</li><li style="box-sizing: border-box; padding: 0px 5px;">143</li><li style="box-sizing: border-box; padding: 0px 5px;">144</li><li style="box-sizing: border-box; padding: 0px 5px;">145</li><li style="box-sizing: border-box; padding: 0px 5px;">146</li><li style="box-sizing: border-box; padding: 0px 5px;">147</li><li style="box-sizing: border-box; padding: 0px 5px;">148</li><li style="box-sizing: border-box; padding: 0px 5px;">149</li><li style="box-sizing: border-box; padding: 0px 5px;">150</li><li style="box-sizing: border-box; padding: 0px 5px;">151</li><li style="box-sizing: border-box; padding: 0px 5px;">152</li><li style="box-sizing: border-box; padding: 0px 5px;">153</li><li style="box-sizing: border-box; padding: 0px 5px;">154</li><li style="box-sizing: border-box; padding: 0px 5px;">155</li><li style="box-sizing: border-box; padding: 0px 5px;">156</li><li style="box-sizing: border-box; padding: 0px 5px;">157</li><li style="box-sizing: border-box; padding: 0px 5px;">158</li><li style="box-sizing: border-box; padding: 0px 5px;">159</li><li style="box-sizing: border-box; padding: 0px 5px;">160</li><li style="box-sizing: border-box; padding: 0px 5px;">161</li><li style="box-sizing: border-box; padding: 0px 5px;">162</li><li style="box-sizing: border-box; padding: 0px 5px;">163</li><li style="box-sizing: border-box; padding: 0px 5px;">164</li><li style="box-sizing: border-box; padding: 0px 5px;">165</li><li style="box-sizing: border-box; padding: 0px 5px;">166</li><li style="box-sizing: border-box; padding: 0px 5px;">167</li><li style="box-sizing: border-box; padding: 0px 5px;">168</li><li style="box-sizing: border-box; padding: 0px 5px;">169</li><li style="box-sizing: border-box; padding: 0px 5px;">170</li><li style="box-sizing: border-box; padding: 0px 5px;">171</li><li style="box-sizing: border-box; padding: 0px 5px;">172</li><li style="box-sizing: border-box; padding: 0px 5px;">173</li><li style="box-sizing: border-box; padding: 0px 5px;">174</li><li style="box-sizing: border-box; padding: 0px 5px;">175</li><li style="box-sizing: border-box; padding: 0px 5px;">176</li><li style="box-sizing: border-box; padding: 0px 5px;">177</li><li style="box-sizing: border-box; padding: 0px 5px;">178</li><li style="box-sizing: border-box; padding: 0px 5px;">179</li><li style="box-sizing: border-box; padding: 0px 5px;">180</li><li style="box-sizing: border-box; padding: 0px 5px;">181</li><li style="box-sizing: border-box; padding: 0px 5px;">182</li><li style="box-sizing: border-box; padding: 0px 5px;">183</li><li style="box-sizing: border-box; padding: 0px 5px;">184</li><li style="box-sizing: border-box; padding: 0px 5px;">185</li><li style="box-sizing: border-box; padding: 0px 5px;">186</li><li style="box-sizing: border-box; padding: 0px 5px;">187</li><li style="box-sizing: border-box; padding: 0px 5px;">188</li><li style="box-sizing: border-box; padding: 0px 5px;">189</li><li style="box-sizing: border-box; padding: 0px 5px;">190</li><li style="box-sizing: border-box; padding: 0px 5px;">191</li><li style="box-sizing: border-box; padding: 0px 5px;">192</li><li style="box-sizing: border-box; padding: 0px 5px;">193</li><li style="box-sizing: border-box; padding: 0px 5px;">194</li><li style="box-sizing: border-box; padding: 0px 5px;">195</li><li style="box-sizing: border-box; padding: 0px 5px;">196</li><li style="box-sizing: border-box; padding: 0px 5px;">197</li><li style="box-sizing: border-box; padding: 0px 5px;">198</li><li style="box-sizing: border-box; padding: 0px 5px;">199</li><li style="box-sizing: border-box; padding: 0px 5px;">200</li><li style="box-sizing: border-box; padding: 0px 5px;">201</li><li style="box-sizing: border-box; padding: 0px 5px;">202</li><li style="box-sizing: border-box; padding: 0px 5px;">203</li><li style="box-sizing: border-box; padding: 0px 5px;">204</li><li style="box-sizing: border-box; padding: 0px 5px;">205</li><li style="box-sizing: border-box; padding: 0px 5px;">206</li><li style="box-sizing: border-box; padding: 0px 5px;">207</li><li style="box-sizing: border-box; padding: 0px 5px;">208</li><li style="box-sizing: border-box; padding: 0px 5px;">209</li><li style="box-sizing: border-box; padding: 0px 5px;">210</li><li style="box-sizing: border-box; padding: 0px 5px;">211</li><li style="box-sizing: border-box; padding: 0px 5px;">212</li><li style="box-sizing: border-box; padding: 0px 5px;">213</li><li style="box-sizing: border-box; padding: 0px 5px;">214</li><li style="box-sizing: border-box; padding: 0px 5px;">215</li><li style="box-sizing: border-box; padding: 0px 5px;">216</li><li style="box-sizing: border-box; padding: 0px 5px;">217</li><li style="box-sizing: border-box; padding: 0px 5px;">218</li><li style="box-sizing: border-box; padding: 0px 5px;">219</li><li style="box-sizing: border-box; padding: 0px 5px;">220</li><li style="box-sizing: border-box; padding: 0px 5px;">221</li><li style="box-sizing: border-box; padding: 0px 5px;">222</li><li style="box-sizing: border-box; padding: 0px 5px;">223</li><li style="box-sizing: border-box; padding: 0px 5px;">224</li><li style="box-sizing: border-box; padding: 0px 5px;">225</li><li style="box-sizing: border-box; padding: 0px 5px;">226</li><li style="box-sizing: border-box; padding: 0px 5px;">227</li><li style="box-sizing: border-box; padding: 0px 5px;">228</li><li style="box-sizing: border-box; padding: 0px 5px;">229</li><li style="box-sizing: border-box; padding: 0px 5px;">230</li><li style="box-sizing: border-box; padding: 0px 5px;">231</li><li style="box-sizing: border-box; padding: 0px 5px;">232</li><li style="box-sizing: border-box; padding: 0px 5px;">233</li><li style="box-sizing: border-box; padding: 0px 5px;">234</li><li style="box-sizing: border-box; padding: 0px 5px;">235</li><li style="box-sizing: border-box; padding: 0px 5px;">236</li><li style="box-sizing: border-box; padding: 0px 5px;">237</li><li style="box-sizing: border-box; padding: 0px 5px;">238</li><li style="box-sizing: border-box; padding: 0px 5px;">239</li><li style="box-sizing: border-box; padding: 0px 5px;">240</li><li style="box-sizing: border-box; padding: 0px 5px;">241</li><li style="box-sizing: border-box; padding: 0px 5px;">242</li><li style="box-sizing: border-box; padding: 0px 5px;">243</li><li style="box-sizing: border-box; padding: 0px 5px;">244</li><li style="box-sizing: border-box; padding: 0px 5px;">245</li><li style="box-sizing: border-box; padding: 0px 5px;">246</li><li style="box-sizing: border-box; padding: 0px 5px;">247</li><li style="box-sizing: border-box; padding: 0px 5px;">248</li><li style="box-sizing: border-box; padding: 0px 5px;">249</li><li style="box-sizing: border-box; padding: 0px 5px;">250</li><li style="box-sizing: border-box; padding: 0px 5px;">251</li><li style="box-sizing: border-box; padding: 0px 5px;">252</li><li style="box-sizing: border-box; padding: 0px 5px;">253</li><li style="box-sizing: border-box; padding: 0px 5px;">254</li><li style="box-sizing: border-box; padding: 0px 5px;">255</li><li style="box-sizing: border-box; padding: 0px 5px;">256</li><li style="box-sizing: border-box; padding: 0px 5px;">257</li><li style="box-sizing: border-box; padding: 0px 5px;">258</li><li style="box-sizing: border-box; padding: 0px 5px;">259</li><li style="box-sizing: border-box; padding: 0px 5px;">260</li><li style="box-sizing: border-box; padding: 0px 5px;">261</li><li style="box-sizing: border-box; padding: 0px 5px;">262</li><li style="box-sizing: border-box; padding: 0px 5px;">263</li><li style="box-sizing: border-box; padding: 0px 5px;">264</li><li style="box-sizing: border-box; padding: 0px 5px;">265</li><li style="box-sizing: border-box; padding: 0px 5px;">266</li><li style="box-sizing: border-box; padding: 0px 5px;">267</li><li style="box-sizing: border-box; padding: 0px 5px;">268</li><li style="box-sizing: border-box; padding: 0px 5px;">269</li><li style="box-sizing: border-box; padding: 0px 5px;">270</li><li style="box-sizing: border-box; padding: 0px 5px;">271</li><li style="box-sizing: border-box; padding: 0px 5px;">272</li><li style="box-sizing: border-box; padding: 0px 5px;">273</li><li style="box-sizing: border-box; padding: 0px 5px;">274</li><li style="box-sizing: border-box; padding: 0px 5px;">275</li><li style="box-sizing: border-box; padding: 0px 5px;">276</li><li style="box-sizing: border-box; padding: 0px 5px;">277</li><li style="box-sizing: border-box; padding: 0px 5px;">278</li><li style="box-sizing: border-box; padding: 0px 5px;">279</li><li style="box-sizing: border-box; padding: 0px 5px;">280</li><li style="box-sizing: border-box; padding: 0px 5px;">281</li><li style="box-sizing: border-box; padding: 0px 5px;">282</li><li style="box-sizing: border-box; padding: 0px 5px;">283</li><li style="box-sizing: border-box; padding: 0px 5px;">284</li><li style="box-sizing: border-box; padding: 0px 5px;">285</li><li style="box-sizing: border-box; padding: 0px 5px;">286</li><li style="box-sizing: border-box; padding: 0px 5px;">287</li><li style="box-sizing: border-box; padding: 0px 5px;">288</li><li style="box-sizing: border-box; padding: 0px 5px;">289</li><li style="box-sizing: border-box; padding: 0px 5px;">290</li><li style="box-sizing: border-box; padding: 0px 5px;">291</li><li style="box-sizing: border-box; padding: 0px 5px;">292</li><li style="box-sizing: border-box; padding: 0px 5px;">293</li><li style="box-sizing: border-box; padding: 0px 5px;">294</li><li style="box-sizing: border-box; padding: 0px 5px;">295</li><li style="box-sizing: border-box; padding: 0px 5px;">296</li><li style="box-sizing: border-box; padding: 0px 5px;">297</li><li style="box-sizing: border-box; padding: 0px 5px;">298</li><li style="box-sizing: border-box; padding: 0px 5px;">299</li><li style="box-sizing: border-box; padding: 0px 5px;">300</li><li style="box-sizing: border-box; padding: 0px 5px;">301</li><li style="box-sizing: border-box; padding: 0px 5px;">302</li><li style="box-sizing: border-box; padding: 0px 5px;">303</li><li style="box-sizing: border-box; padding: 0px 5px;">304</li><li style="box-sizing: border-box; padding: 0px 5px;">305</li><li style="box-sizing: border-box; padding: 0px 5px;">306</li><li style="box-sizing: border-box; padding: 0px 5px;">307</li><li style="box-sizing: border-box; padding: 0px 5px;">308</li><li style="box-sizing: border-box; padding: 0px 5px;">309</li><li style="box-sizing: border-box; padding: 0px 5px;">310</li><li style="box-sizing: border-box; padding: 0px 5px;">311</li><li style="box-sizing: border-box; padding: 0px 5px;">312</li><li style="box-sizing: border-box; padding: 0px 5px;">313</li><li style="box-sizing: border-box; padding: 0px 5px;">314</li><li style="box-sizing: border-box; padding: 0px 5px;">315</li><li style="box-sizing: border-box; padding: 0px 5px;">316</li><li style="box-sizing: border-box; padding: 0px 5px;">317</li><li style="box-sizing: border-box; padding: 0px 5px;">318</li><li style="box-sizing: border-box; padding: 0px 5px;">319</li><li style="box-sizing: border-box; padding: 0px 5px;">320</li><li style="box-sizing: border-box; padding: 0px 5px;">321</li><li style="box-sizing: border-box; padding: 0px 5px;">322</li><li style="box-sizing: border-box; padding: 0px 5px;">323</li><li style="box-sizing: border-box; padding: 0px 5px;">324</li><li style="box-sizing: border-box; padding: 0px 5px;">325</li><li style="box-sizing: border-box; padding: 0px 5px;">326</li><li style="box-sizing: border-box; padding: 0px 5px;">327</li><li style="box-sizing: border-box; padding: 0px 5px;">328</li><li style="box-sizing: border-box; padding: 0px 5px;">329</li><li style="box-sizing: border-box; padding: 0px 5px;">330</li><li style="box-sizing: border-box; padding: 0px 5px;">331</li><li style="box-sizing: border-box; padding: 0px 5px;">332</li><li style="box-sizing: border-box; padding: 0px 5px;">333</li><li style="box-sizing: border-box; padding: 0px 5px;">334</li><li style="box-sizing: border-box; padding: 0px 5px;">335</li><li style="box-sizing: border-box; padding: 0px 5px;">336</li><li style="box-sizing: border-box; padding: 0px 5px;">337</li><li style="box-sizing: border-box; padding: 0px 5px;">338</li><li style="box-sizing: border-box; padding: 0px 5px;">339</li><li style="box-sizing: border-box; padding: 0px 5px;">340</li><li style="box-sizing: border-box; padding: 0px 5px;">341</li><li style="box-sizing: border-box; padding: 0px 5px;">342</li><li style="box-sizing: border-box; padding: 0px 5px;">343</li><li style="box-sizing: border-box; padding: 0px 5px;">344</li><li style="box-sizing: border-box; padding: 0px 5px;">345</li><li style="box-sizing: border-box; padding: 0px 5px;">346</li><li style="box-sizing: border-box; padding: 0px 5px;">347</li><li style="box-sizing: border-box; padding: 0px 5px;">348</li><li style="box-sizing: border-box; padding: 0px 5px;">349</li><li style="box-sizing: border-box; padding: 0px 5px;">350</li></ul>接下来，就要准备仿真用数据了，我这里用matlab将一副图片的图像数据取出来，写成rgb文件，当做视频数据源
<code class="hljs matlab has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">image=imread(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'test.bmp'</span>);image=imresize(image,<span class="hljs-matrix" style="box-sizing: border-box;">[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>]</span>);imshow(image);w=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>;h=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>;fd=fopen(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'input.rgb'</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'wb'</span>);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">i</span>=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:h <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">j</span>=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:w pix=<span class="hljs-matrix" style="box-sizing: border-box;">[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>,image(i,j,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>),image(i,j,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>),image(i,j,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>)]</span>; fwrite(fd,<span class="hljs-transposed_variable" style="box-sizing: border-box;">pix'</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'uint8'</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>fclose(fd);</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li></ul>
接下来在sensor模块里面读出这个图像数据，然后根据视频时序发出
sensor.v代码
<code class="hljs vhdl has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">`timescale <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>ns / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>ps`timescale <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>ns / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>ps//////////////////////////////////////////////////////////////////////////////////// // Engineer: EEPROM// //////////////////////////////////////////////////////////////////////////////////module sensor ( input rst, input clk, output reg vsync, output reg hsync, output reg de, output reg vblank, output reg[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]pix_out);parameter SENSOR_ACT_W = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>;parameter SENSOR_ACT_H = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>;parameter SENSOR_WIDTH = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">800</span>;parameter SENSOR_HEIGHT = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">600</span>;parameter H_START = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">80</span>; parameter V_START = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">60</span>; parameter DATA_SIZE = SENSOR_WIDTH*SENSOR_HEIGHT;reg [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] hcnt;reg [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] vcnt;reg [<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] raw_array [DATA_SIZE-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>];<span class="hljs-typename" style="color: rgb(102, 0, 102); box-sizing: border-box;">integer</span> i;<span class="hljs-typename" style="color: rgb(102, 0, 102); box-sizing: border-box;">integer</span> file_hdl;initial <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> file_hdl = $fopen(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"input.rgb"</span>, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"rb"</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> ( i=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; i<DATA_SIZE; i=i+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> raw_array[i][<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] = $fgetc(file_hdl); raw_array[i][<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">15</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>] = $fgetc(file_hdl); raw_array[i][<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">23</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>] = $fgetc(file_hdl); raw_array[i][<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">31</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">24</span>] = $fgetc(file_hdl); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> $fclose(file_hdl); $display(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"read raw data ok\n"</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(rst) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> hcnt <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">13</span><span class="hljs-attribute" style="box-sizing: border-box;">'d0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(hcnt == SENSOR_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>) hcnt <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">13</span><span class="hljs-attribute" style="box-sizing: border-box;">'d0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> hcnt <= hcnt + <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(rst) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> vcnt <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">13</span><span class="hljs-attribute" style="box-sizing: border-box;">'d0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(hcnt == SENSOR_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> && vcnt == SENSOR_HEIGHT-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>) vcnt <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">13</span><span class="hljs-attribute" style="box-sizing: border-box;">'d0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(hcnt == SENSOR_WIDTH-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>) vcnt <= vcnt + <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(rst) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> hsync <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(hcnt <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">13</span><span class="hljs-attribute" style="box-sizing: border-box;">'d40</span>) hsync <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b1</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> hsync <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(rst) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> de <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(hcnt >= H_START && hcnt < H_START+SENSOR_ACT_W && vcnt >= V_START && vcnt < V_START+SENSOR_ACT_H ) de <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b1</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> de <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(rst) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> vblank <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b1</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(vcnt >= V_START-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> && vcnt <= V_START+SENSOR_ACT_H ) vblank <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> vblank <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b1</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(rst) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span> vsync <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(vcnt <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>) vsync <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b1</span>; <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> vsync <= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-attribute" style="box-sizing: border-box;">'b0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>always @(posedge clk) pix_out <= (hcnt >= H_START &&hcnt < H_START+SENSOR_ACT_W && vcnt >= V_START && vcnt < V_START+SENSOR_ACT_H) ? raw_array[(vcnt-V_START)*SENSOR_ACT_W+hcnt-H_START]:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;endmodule</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li></ul>
视频数据源有了，那么为了验证vdma工作正常，即视频数据读写ddr正常，就需要把读回来的数据也存储一下，代码在tb_top最后有写，至于为什么要等fram_cnt为1的时候开始写，那是因为我做的是一个乒乓buffer，vdma读出来的第一帧数据是无效数据，第二帧开始才是有效数据。
代码都准备完毕，开始仿真，我这里调用的modelsim，vivado如果使用modelsim仿真，这里不做介绍，网上搜一下资料还是比较多的
仿真关键信号时序：
这里面是做两帧的仿真，牢骚一句，仿真真的太慢了
仿真结束以后，会把从DDR读回来的视频数据存储到output.rbg文件里面，还是用matlab对这个数据做处理：
<code class="hljs matlab has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">w=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">640</span>;h=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">480</span>;dst = <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">zeros</span>(h,w);fd=fopen(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'output.rgb'</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'r'</span>);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">i</span>=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:h <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">j</span>=<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>:w <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">%pix=[0,image(i,j,1),image(i,j,2),image(i,j,3)];</span> pix=fread(fd,<span class="hljs-matrix" style="box-sizing: border-box;">[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>]</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'uint8'</span>); dst(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">i</span>,<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">j</span>)=pix(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>); dst(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">i</span>,<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">j</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)=pix(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>); dst(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">i</span>,<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">j</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>)=pix(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>fclose(fd);figureimshow(uint8(dst));</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul>
下面是输入图片和输出图片对比：
可见vdma工作正常
四：总结
通过对vdma的仿真，可以更深入的了解vdma的工作原理，工作流程，给实际应用做好准备工作。同时，这么做也有更多的意义，对于一些需要DDR缓存才能完成的图像算法，比如视频3D降噪，运动物体检测帧差法，HDR图像合成等等，完全可以在此基础上进行仿真，能更大程度的模拟FPGA实际工作状况，提高算法移植效率。
这篇主要是针对仿真，下一篇将重点介绍vdma的实际应用，也就是上板测试。
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