Linux下用USB传输文件到开发板

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div jquery1276381528437=”14″ contentScore=”4366″>/* dnw2 linux main file. This depends on libusb.

You should use lsusb to find out the actual vender ID & product ID of board.

Author:     Fox hulifox008@163.com
             Ace Strong acestrong@gmail.com
License:    GPL

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

#define QQ2440_VENDOR_ID        0x5345
#define QQ2440_PRODUCT_ID       0x1234
#define FS2410_VENDOR_ID        0x5345
#define FS2410_PRODUCT_ID       0x1234
#define EZ6410_VENDOR_ID        0x04e8
#define EZ6410_PRODUCT_ID       0x1234

#define EZ6410_RAM_BASE         0x50200000
#define FS2410_RAM_BASE         0x30200000

/
// FS2410
#define RAM_BASE            FS2410_RAM_BASE
#define VENDOR_ID           FS2410_VENDOR_ID
#define PRODUCT_ID          FS2410_PRODUCT_ID
/
// EZ6410
#define RAM_BASE            EZ6410_RAM_BASE
#define VENDOR_ID           EZ6410_VENDOR_ID
#define PRODUCT_ID          EZ6410_PRODUCT_ID

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( VENDOR_ID==dev->descriptor.idVendor
            &&  PRODUCT_ID==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) = RAM_BASE;        //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, 0x02, 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);
      ¼/div>