mini2440_x35 ubuntu下使用dnw进行传送文件

关键点

需要libusb的支持，使用apt-get install libusb进行安装
注意QQ2440_SECBULK_IDVENDOR 以及 QQ2440_SECBULK_IDPRODUCT的值，我使用的是方口进行数据传输，对应的值是0x5345以及0x1234。下面介绍如何查询这两个值

1. 将开发版拨到NOR，并开机
2. 输入lisusb，可以看到

Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 13d3:5165 IMC Networks 
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 5345:1234 Owon PDS6062T Oscilloscope
Bus 003 Device 002: ID 0461:4de2 Primax Electronics, Ltd 
Bus 003 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Owon PDS6062T就是我们的方口啦，它的ID就是5345:1234

dnw源代码

    #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;  
    }  

gcc -o dnw2 dnw.c 进行编译
./dnw2 filename 进行传输。
网络上很多代码都是需要加载驱动之类的，我试过了好多，都失败了。这个方法是可行的