CentOS6.4下利用dnw烧写文件，dnw安装与配置（基于TQ2440）

首先下载dnw：http://download.csdn.net/detail/plaza02/1011140

这个是在网上找的，当然也可以去别的地方下载，很多的。

1.解压缩文件： # tar xvf dnw_for_linux.tar.gz

　　2.然后切换到下面的目录，编译usb驱动模块： # cd dnw_for_linux/secbulk

　　# make -C /lib/modules/2.6.33.6-147.fc13.i686/build/ M=/home/lhc/Desktop/dnw_for_linux/secbulk/ modules

　(注 意：相应路径要替换成你机器的路径。/lib/modules/2.6.33.6-147.fc13.i686/build/目录中 “2.6.33.6-147.fc13.i686”是当前启动内核版本，如果你是多内核要注意了（不确定可以终端uname -r命令查看内核版本）。或者利用命令：make -C /lib/modules/`uname -r`/build M=`pwd` modules)

出现错误：make: *** /lib/modules/2.6.25-14.fc9.i686/build: 沒有此一档案和目录
sudo yum install kernel-devel 再make -C /lib/modules/`uname -r`/build M=`pwd` modules

　　3.编译完成后，会生成secbulk.ko文件： # ls

　　Makefile Module.symvers secbulk.ko secbulk.mod.o

　　modules.order secbulk.c secbulk.mod.c secbulk.o

　　4.加载模块到Linux内核： # insmod ./secbulk.ko （注意要在root权限下）

　　# dmesg (查看是否加载成功）

　　secbulk:secbulk loaded

　　usbcore: registered new interface driver secbulk （看到这样两行就说明成功了）

　　5.下面开始编译dnw工具 # cd ../dnw

　　# gcc -o dnw dnw.c

　　(编译完成，会看到dnw可执行文件）

　　6.将文件copy到/usr/local/bin目录 # cp dnw /usr/local/bin

　　(这样就可以在shell下面直接使用dnw命令了）

DNW的使用

　　1.在minicom下，从Nor Flash启动TQ2440,选择1功能： [1] Download uboot or STEPLDR.nb1 or other bootloader to Nand Flash

　　2.此时，打开另一个终端： # su

　　# sudo dnw /mnt/h/embedded/天嵌4.3寸屏的镜像/

　　file name : work/linux-2.6.30.4/zImage.bin/U-boot/u-boot-1.1.6_Q43_20120323.bin

ile size : 231424 bytes
Writing data...
100% 231434 bytes OK（此时就将u-boot镜像下载到开发板了）

　　3.再看下minicom的输出信息 ter your selection: 1

USB host is connected. Waiting a download.



Now, Downloading [ADDRESS:30000000h,TOTAL:231434]

RECEIVED FILE SIZE: 231434 (226KB/S, 1S)



NAND erase: device 0 offset 0x0, size 0x40000


Erasing at 0x0 -- 50% complete.
Erasing at 0x20000 -- 100% complete.

OK



NAND write: device 0 offset 0x0, size 0x38800




Writing data at 0x0 -- 0% complete.
Writing data at 0x800 -- 1% complete.
Writing data at 0x1000 -- 2% complete.
Writing data at 0x1800 -- 3% complete.
Writing data at 0x2000 -- 4% complete.
Writing data at 0x2800 -- 5% complete.
Writing data at 0x3000 -- 6% complete.
Writing data at 0x3800 -- 7% complete.
Writing data at 0x4800 -- 8% complete.
Writing data at 0x5000 -- 9% complete.
Writing data at 0x5800 -- 10% complete.
Writing data at 0x6000 -- 11% complete.
Writing data at 0x6800 -- 12% complete.
Writing data at 0x7000 -- 13% complete.
Writing data at 0x7800 -- 14% complete.
Writing data at 0x8000 -- 15% complete.
Writing data at 0x9000 -- 16% complete.
Writing data at 0x9800 -- 17% complete.
Writing data at 0xa000 -- 18% complete.
Writing data at 0xa800 -- 19% complete.
Writing data at 0xb000 -- 20% complete.
Writing data at 0xb800 -- 21% complete.
Writing data at 0xc000 -- 22% complete.
Writing data at 0xc800 -- 23% complete.
Writing data at 0xd800 -- 24% complete.
Writing data at 0xe000 -- 25% complete.
Writing data at 0xe800 -- 26% complete.
Writing data at 0xf000 -- 27% complete.
Writing data at 0xf800 -- 28% complete.
Writing data at 0x10000 -- 29% complete.
Writing data at 0x10800 -- 30% complete.
Writing data at 0x11800 -- 31% complete.
Writing data at 0x12000 -- 32% complete.
Writing data at 0x12800 -- 33% complete.
Writing data at 0x13000 -- 34% complete.
Writing data at 0x13800 -- 35% complete.
Writing data at 0x14000 -- 36% complete.
Writing data at 0x14800 -- 37% complete.
Writing data at 0x15000 -- 38% complete.
Writing data at 0x16000 -- 39% complete.
Writing data at 0x16800 -- 40% complete.
Writing data at 0x17000 -- 41% complete.
Writing data at 0x17800 -- 42% complete.
Writing data at 0x18000 -- 43% complete.
Writing data at 0x18800 -- 44% complete.
Writing data at 0x19000 -- 45% complete.
Writing data at 0x19800 -- 46% complete.
Writing data at 0x1a800 -- 47% complete.
Writing data at 0x1b000 -- 48% complete.
Writing data at 0x1b800 -- 49% complete.
Writing data at 0x1c000 -- 50% complete.
Writing data at 0x1c800 -- 51% complete.
Writing data at 0x1d000 -- 52% complete.
Writing data at 0x1d800 -- 53% complete.
Writing data at 0x1e800 -- 54% complete.
Writing data at 0x1f000 -- 55% complete.
Writing data at 0x1f800 -- 56% complete.
Writing data at 0x20000 -- 57% complete.
Writing data at 0x20800 -- 58% complete.
Writing data at 0x21000 -- 59% complete.
Writing data at 0x21800 -- 60% complete.
Writing data at 0x22000 -- 61% complete.
Writing data at 0x23000 -- 62% complete.
Writing data at 0x23800 -- 63% complete.
Writing data at 0x24000 -- 64% complete.
Writing data at 0x24800 -- 65% complete.
Writing data at 0x25000 -- 66% complete.
Writing data at 0x25800 -- 67% complete.
Writing data at 0x26000 -- 68% complete.
Writing data at 0x26800 -- 69% complete.
Writing data at 0x27800 -- 70% complete.
Writing data at 0x28000 -- 71% complete.
Writing data at 0x28800 -- 72% complete.
Writing data at 0x29000 -- 73% complete.
Writing data at 0x29800 -- 74% complete.
Writing data at 0x2a000 -- 75% complete.
Writing data at 0x2a800 -- 76% complete.
Writing data at 0x2b800 -- 77% complete.
Writing data at 0x2c000 -- 78% complete.
Writing data at 0x2c800 -- 79% complete.
Writing data at 0x2d000 -- 80% complete.
Writing data at 0x2d800 -- 81% complete.
Writing data at 0x2e000 -- 82% complete.
Writing data at 0x2e800 -- 83% complete.
Writing data at 0x2f000 -- 84% complete.
Writing data at 0x30000 -- 85% complete.
Writing data at 0x30800 -- 86% complete.
Writing data at 0x31000 -- 87% complete.
Writing data at 0x31800 -- 88% complete.
Writing data at 0x32000 -- 89% complete.
Writing data at 0x32800 -- 90% complete.
Writing data at 0x33000 -- 91% complete.
Writing data at 0x33800 -- 92% complete.
Writing data at 0x34800 -- 93% complete.
Writing data at 0x35000 -- 94% complete.
Writing data at 0x35800 -- 95% complete.
Writing data at 0x36000 -- 96% complete.
Writing data at 0x36800 -- 97% complete.
Writing data at 0x37000 -- 98% complete.
Writing data at 0x37800 -- 99% complete.
Writing data at 0x38000 -- 100% complete.

231424 bytes written: OK

　　由于每次重启都需要加载一次secbulk.ko模块，为了实现自动加载，可作以下操作：

　　1.修改secbulk.ko的权限成755

　　2.修改etc/rc.local文件，添加下面一行

　　sudo sbin/insmod /usr/bin/secbulk.ko

　　说明：将secbulk.ko拷贝到了/usr/bin目录下边，为了防止意外删除，你要是不想动原来的文件夹的话，直接将“usr/bin/secbulk.ko”改成你的secbulk.ko的全路经即可。

　　重启后，用lsmod|grep secbulk来验证一下，看模块是否自动加载了 不过每次开机都要加载一次那个.ko模块

最后，提高下载速度
将secbulk.c中的
#define BULKOUT_BUFFER_SIZE 32
改为
#define BULKOUT_BUFFER_SIZE 512

重复上面第步骤重新编译，下载
可发现速度快了很多。