在Ubuntu10.10中搭建TQ2440下载环境

最新推荐文章于 2021-05-03 18:05:48 发布

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最新推荐文章于 2021-05-03 18:05:48 发布

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文章标签： Ubuntu minicom dnw

本文链接：https://blog.youkuaiyun.com/hanyuwen007/article/details/31433545

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硬件：联想S420PC TQ2440开发板 U转串模块数据线USB-HOST

软件：系统为Ubuntu10.10

完成了Linux的内核和文件系统的编译，接下来得把镜像下载到目标板上看看行不行了？在WIN系统中可以使用SecureCRT和DNW完成这项工作，在LINUX环境下怎么下载呢？难不成还要切换系统再下载？

当然不用！下面介绍在LINUX环境下（Ubuntu10.10），利用minicom和dnw工具进行下载

1.安装minicom ，首先：sudo apt-get install minicom 。

安装完成后，在终端输入：minicom 启动该程序

程序启动后会先出现初始化界面，稍等片刻出现以下界面：

        Welcome to minicom 2.4

         OPTIONS: I18n
         Compiled on Jun 3 2010, 13:46:31.
         Port /dev/ttyUSB0

         Press CTRL-A Z for help on special keys

然后按CTRL+A 松开后再按 o 进入如下配置界面：

按A-G字母选择修改的选项，最后修改如上面界面即可，按回车，然后选择“Save setup as dfl“ 然后选择“Exit”正常退出。然后按CTRL+A 松开后按Q退出。（注意：非正常关闭minicom，会在/var/lock下创建几个文件LCK*，这几个文件阻止了minicom的运行，将它们删除后即可恢复）

这样重启minicom,链接串口线，即可看到打印信息了。

2.安装dnw工具

首先得安装这个库：sudo apt-get install libusb-dev

然后新建dnw.c文件：vim dnw.c(本人用的VIM)

将下面的文本拷贝进dnw.c文件并保存：

/* dnw2 linux main file. This depends on libusb.

*

* Author: Fox <hulifox008@163.com>

* License: GPL

*

*/

#include <stdio.h>

#include <usb.h>

#include <errno.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <unistd.h>

#define QQ2440_SECBULK_IDVENDOR 0x5345

#define QQ2440_SECBULK_IDPRODUCT 0x1234

struct usb_dev_handle * open_port()

{

struct usb_bus *busses, *bus;

usb_init();

usb_find_busses();

usb_find_devices();

busses = usb_get_busses();

for(bus=busses;bus;bus=bus->next)

{

struct usb_device *dev;

for(dev=bus->devices;dev;dev=dev->next)

{

printf("idVendor:0x%x\t,ipProduct:0x%x\n",dev->descriptor.idVendor,dev->descriptor.idProduct);

if( QQ2440_SECBULK_IDVENDOR==dev->descriptor.idVendor

&& QQ2440_SECBULK_IDPRODUCT==dev->descriptor.idProduct)

{

printf("Target usb device found!\n");

struct usb_dev_handle *hdev = usb_open(dev);

if(!hdev)

{

perror("Cannot open device");

}

else

{

if(0!=usb_claim_interface(hdev, 0))

{

perror("Cannot claim interface");

usb_close(hdev);

hdev = NULL;

}

}

return hdev;

}

}

}

printf("Target usb device not found!\n");

return NULL;

}

void usage()

{

printf("Usage: dnw2 <file>\n\n");

}

unsigned char* prepare_write_buf(char *filename, unsigned int *len)

{

unsigned char *write_buf = NULL;

struct stat fs;

int fd = open(filename, O_RDONLY);

if(-1==fd)

{

perror("Cannot open file");

return NULL;

}

if(-1==fstat(fd, &fs))

{

perror("Cannot get file size");

goto error;

}

write_buf = (unsigned char*)malloc(fs.st_size+10);

if(NULL==write_buf)

{

perror("malloc failed");

goto error;

}

if(fs.st_size != read(fd, write_buf+8, fs.st_size))

{

perror("Reading file failed");

goto error;

}

printf("Filename : %s\n", filename);

printf("Filesize : %d bytes\n", fs.st_size);

*((u_int32_t*)write_buf) = 0x30000000; //download address

*((u_int32_t*)write_buf+1) = fs.st_size + 10; //download size;

*len = fs.st_size + 10;

return write_buf;

error:

if(fd!=-1) close(fd);

if(NULL!=write_buf) free(write_buf);

fs.st_size = 0;

return NULL;

}

int main(int argc, char *argv[])

{

if(2!=argc)

{

usage();

return 1;

}

struct usb_dev_handle *hdev = open_port();

if(!hdev)

{

return 1;

}

unsigned int len = 0;

unsigned char* write_buf = prepare_write_buf(argv[1], &len);

if(NULL==write_buf) return 1;

unsigned int remain = len;

unsigned int towrite;

printf("Writing data ...\n");

while(remain)

{

towrite = remain>512 ? 512 : remain;

if(towrite != usb_bulk_write(hdev, 0x03, write_buf+(len-remain), towrite, 3000))

{

perror("usb_bulk_write failed");

break;

}

remain-=towrite;

printf("\r%d%\t %d bytes ", (len-remain)*100/len, len-remain);

fflush(stdout);

}

if(0==remain) printf("Done!\n");

return 0;

}