Ubuntu 12.04系统环境利用USB下载程序到TQ2440开发板

来源：互联网发布：李小龙命理知乎编辑：程序博客网时间：2024/05/01 00:35

本程序是配合minicom一起使用。。。。。

注意此方法我在TQ2440开发板测试成功，其他开发板请在王路上查找相应的代码！！！

经历了多方周折，终于看到程序下载到了目标板上下面是具体步骤：

),首先要安装libusb-dev这个库。我是在Ubuntu下做的。

那么就：sudoapt-get install libusb-dev

装完之后就编译一个下载工具，网上有个牛人提供了一个。代码如下：

#include<stdio.h>
#include <usb.h>
#include<errno.h>
#include <sys/stat.h>
#include<fcntl.h>
#include <unistd.h>

#defineQQ2440_SECBULK_IDVENDOR 0x5345
#define QQ2440_SECBULK_IDPRODUCT0x1234

structusb_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)
{
structusb_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("Targetusb device found!/n");
struct usb_dev_handle *hdev =usb_open(dev);
if(!hdev)
{
perror("Cannot opendevice");
}
else
{
if(0!=usb_claim_interface(hdev,0))
{
perror("Cannot claiminterface");
usb_close(hdev);
hdev = NULL;
}
}
returnhdev;
}
}
}

printf("Targetusb device not found!/n");

returnNULL;
}

voidusage()
{
printf("Usage: dnw2 <file>/n/n");
}

unsignedchar* prepare_write_buf(char *filename, unsigned int *len)
{
unsignedchar *write_buf = NULL;
struct stat fs;

intfd = open(filename, O_RDONLY);
if(-1==fd)
{
perror("Cannotopen file");
return NULL;
}
if(-1==fstat(fd,&fs))
{
perror("Cannot get file size");
gotoerror;
}
write_buf = (unsignedchar*)malloc(fs.st_size+10);
if(NULL==write_buf)
{
perror("mallocfailed");
goto error;
}

if(fs.st_size!= read(fd, write_buf+8, fs.st_size))
{
perror("Readingfile 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;

}

intmain(int argc, char *argv[])
{
if(2!=argc)
{
usage();
return1;
}

structusb_dev_handle *hdev = open_port();
if(!hdev)
{
return 1;
}

unsignedint len = 0;
unsigned char* write_buf = prepare_write_buf(argv[1],&len);
if(NULL==write_buf) return 1;

unsignedint remain = len;
unsigned int towrite;
printf("Writingdata .../n");
while(remain)
{
towrite = remain>512 ?512 : remain;
if(towrite != usb_bulk_write(hdev, 0x03,write_buf+(len-remain), towrite, 3000))
{
perror("usb_bulk_writefailed");
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;
}

2),把它保存为文件如：dnw2.c
接着编译:gcc dnw2.c -o dnw2 -lusb

3）移动dnw2可执行文件到/usr/bin下

sudomv . / dnw2 / usr/ bin

4）

sudodnw2 path/your_filename