Chipscope 仿真VmodCAM IIC程序

Chipscope 仿真VmodCAM IIC程序：

 目的：熟悉EDK中建立chipscope

注意：zedboard使用digilent USB下载时，chipscope不能和SDK同时使用，否则芯片会死机。要用仿真器烧写程序。

1：搭建硬件平台

  硬件平台如下所示：具体的EDK设计流程参见XILINX大学workshop

                                       http://china.xilinx.com/support/university/professors.html

  搭建后的平台见下图，其中除了IIC和axi总线，其他的都不是必须的外设，并且添加chipscoe。可以根据自己设计添加栓出。然后Export Design，出到到SDK中，编写IIC控制程序

2：编写SDK软件

  （IIC控制程序），也就是设置摄像头的寄存器，具体的控制参见DT9 datashhet

配置寄存器

0x30,0x00,0x00,0x00, // Chip version. Default 0x1580  !! only for read   !!0x33,0x86,0x05,0x01, // MCU Reset0x32,0x90,0x00,0x01, // test pattern0x32,0x92,0x00,0x00, // R pattern0x32,0x94,0x00,0xff, // G pattern0x32,0x96,0x00,0x00, // B pattern0x33,0x86,0x05,0x00, // MCU Release from reset0x32,0x14,0x0D,0x85, // Slew rate control, PCLK 5, D 50x34,0x1E,0x8F,0x09, // PLL control; bypassed, powered down0x34,0x1C,0x02,0x30, // PLL dividers; M=80,N=2,fMCLK=fCLKIN*M/(N+1)/8=24MHz0x34,0x1E,0x8F,0x09, // PLL control; Power-up PLL; wait 1ms after this!0x34,0x1E,0x8F,0x08, // PLL control; Turn off bypass0x32,0x02,0x00,0x08, // Standby control; Wake up

0x33,0x8C,0x27,0x97, // Output format; Context B shadow0x33,0x90,0x00,0x20, // RGB with BT656 codes

0x33,0x8C,0x27,0x2F, // Sensor Row Start Context B0x33,0x90,0x00,0x04, // 40x33,0x8C,0x27,0x33, // Sensor Row End Context B0x33,0x90,0x04,0xBB, // 12110x33,0x8C,0x27,0x31, // Sensor Column Start Context B0x33,0x90,0x00,0x04, // 4

0x33,0x8C,0x27,0x35, // Sensor Column End Context B0x33,0x90,0x06,0x4B, // 16110x33,0x8C,0x27,0x07, // Output width; Context B0x33,0x90,0x02,0x80, // 6400x33,0x8C,0x27,0x09, // Output height; Context B0x33,0x90,0x01,0xE0, // 480

0x33,0x8C,0x27,0x5F, // Crop X0; Context B0x33,0x90,0x00,0x00, // 00x33,0x8C,0x27,0x63, // Crop Y0; Context B0x33,0x90,0x00,0x00, // 00x33,0x8C,0x27,0x61, // Crop X1; Context B0x33,0x90,0x06,0x40, // 16000x33,0x8C,0x27,0x65, // Crop Y1; Context B0x33,0x90,0x04,0xB0, // 1200

0x33,0x8C,0x27,0x41, // Sensor_Fine_IT_min B0x33,0x90,0x01,0x69, // 3610x33,0x8C,0xA1,0x20, // Capture mode options0x33,0x90,0x00,0xF2, // Turn on AWB, AE, HG, Video0x33,0x8C,0xA1,0x03, // Refresh Sequencer Mode0x33,0x90,0x00,0x02, // Capture0x33,0x90,0x00,0x00, // Read until sequencer in mode 0 (run)0x30,0x1A,0x02,0xCC, // reset/output control; parallel enable, drive pins, start streaming

  

/*****************************************************************************//*** This function is initial the iic_0.** @paramNone.** @returnThe number of bytes sent.** @noteNone.*****************************************************************************/int  IIC_Initial( XIic *IicInstance, u16 DeviceId){ XIic_Config *IICConfigPtr;/* Pointer to configuration data */ Xil_AssertNonvoid(IicInstance != NULL);   /*     * Initialize the IIC driver so that it is ready to use.     */    IICConfigPtr = XIic_LookupConfig(DeviceId);if (IICConfigPtr == (XIic_Config *) NULL) {IicInstance->IsReady = 0;return (XST_DEVICE_NOT_FOUND);}return XIic_CfgInitialize(IicInstance, IICConfigPtr,IICConfigPtr->BaseAddress);}

int Vmod_CameraA_IIC_Config(){unsigned ByteCount=0;int i = 0;u8 ReadCamera_ChipVersion_Add[2] = {0x30,0x00};u8 ReadCamera_ChipVersion_Rdata[2];u16 Chip_Version = 0;printf("Here we go\n");printf("Config the Camera\n");read_camera_config(XPAR_CAMER_IIC_A_BASEADDR,ReadCamera_ChipVersion_Add,ReadCamera_ChipVersion_Rdata);Chip_Version = (ReadCamera_ChipVersion_Rdata[0] << 8) | ReadCamera_ChipVersion_Rdata[1];printf("Read Chip Version is:0x%x\n",Chip_Version);for(i=0;i<MT9D112_CONFIG_BUFFER_ROWS;i++){ByteCount += XIic_Send(XPAR_CAMER_IIC_A_BASEADDR,CAMERA_ADDRESS_ID,MT9D112_CONFIG_BUFFER[i],4,XIIC_STOP);}if(MT9D112_CONFIG_BUFFER_ROWS*4 == ByteCount){printf("Camera Initialize success\n");printf("Camera Initialize ByteCount is:%d\n",ByteCount);return ByteCount;}else printf("Camera Initialize fail\n");}void read_camera_config (u32 BaseAddress, u8 *sub_addr, u8 *RdData){u8 sent_byte_count;u8 received_byte_count;RdData[0] = 0;RdData[1] = 0;xil_printf("Read\t");sent_byte_count = XIic_Send(BaseAddress, 0x78>>1, sub_addr, 2, XIIC_STOP); //write sub-addressif (sent_byte_count != 2)xil_printf("Sent %d bytes\t", sent_byte_count);received_byte_count = XIic_Recv(BaseAddress, 0x79>>1, RdData, 2, XIIC_STOP); //read 2 byte datasif (received_byte_count != 2)xil_printf("Received %d bytes\r\n", received_byte_count);elsexil_printf("0x%02x 0x%02x\r\n", RdData[0], RdData[1]);}

3:ChipScope 调试

4 VmodCAM  

硬件写地址0x78 读地址0x79

访问方式：

1、通过直接的硬件寄存器访问

2、通过驱动变量进行配置，这种配置都是靠R[0X338C]与R[0X3390]两个硬件寄存器间接访问，R[0X338C]是选择驱动变量的寄存器，R[0X3390]则是设置对应驱动变量的值。

图 1  驱动变量地址

供电与复位：

配置操作：

寄存器上电的初始值

 

首先就可以读取摄像头的ID 地址是R[0X3000],读取的ID应该是0X1580.

然后复位MCU

           PLL 时钟配置：

PLL配置包括R[0X341C]用于PLL输出（PCLK）频率设置。PCLK = MCLK*M/((N+1)/8),  R[0X341E]用于设置PLL工作与否 还有旁路有否。如果想要旁路掉PLL那么R[0X341E]【0】必须设置为1，如果有功耗要求，可以将R[0X341E]【1】设置为1来关闭PLL 。如果要打开PLL，那么以上两位必须设置为0.在默认情况下，都是关闭和旁路掉PLL的。

Any changes to PLL settings must be done with PLL bypassed (R0x341E[0]=1). （当需要修改PLL的参数时必须保持PLL在旁路状态）

PLL programming and power-up sequence is as follows:
1. Program PLL frequency settings, R0x341C (pll_m, pll_n) (master clock frequency is
equal to fVCO_pll/8). With default settings master clock frequency of 80 MHz is
obtained with fCLKIN=16MHz.
2. Power up PLL, R0x341E[1] = 0.
3. Wait for PLL settling time > 1ms.
4. Turn off PLL bypass, R0x341E[0] = 0.

             

    

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