Linux-world-2012-January->9 (dnw2_for_linux(ubuntu)successful version)

DNW2 for linux(ubuntu)绝对能用的

首先要安装libusb-dev库。我是在ubuntu下做的。
那么就：sudo apt-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：

CODE:

/* dnw2 linux main file. This depends on libusb.
 *
 * User:         Herodouble<[e-mail]>
 * 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;

}把它保存为文件如：dnw2.c
接着编译: gcc dnw2.c -o dnw2 -lusb
编译完得到的dnw2就是usb下载的PC端了。
下载时用:dnw2 <filename>下载你的文件到板上。速度还不错哦。
干脆再生成的链接文件sudo ln -s ./dnw2 /usr/sbin/dnw2
这样在我们每编译完要下载的文件就可以直接下载了。
                              ps
有人推出了那个图形界面的dnw，个人感觉还是命令行好。因为那个需要安装qt4，比较麻烦