ubuntu下dnw2工具的使用

1. 安装libusb-dev库

$sudo apt-get install libusb-dev

2. dnw2源码

/* dnw2 linux main file. This depends on libusb.  *  * Author: Fox  * 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)         {             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 \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; }

3. 编译

gcc dnw2.c -o dnw2 -lusb

4. 移动dnw2可执行文件到 /usr/bin下

sudo mv ./dnw2 /usr/bin

5. 使用
当开发板和PC机用usb连接线(B型，一头是方口，一头是标准usb口)后 ，使用命令

sudo dnw2 your_file