Linux下DNW源码及安装

平台：

Ubuntu12.04 + 64bit

tiny4412ADK

1.首先要安装libusb-dev这个库,执行“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：

dnw.c

/* dnw2 linux main file. This depends on libusb.
 * *
 * * Author: Fox <hulifox008@163.com>
 * * License: GPL
 * *
 * */
#include <stdio.h>
#include <usb.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

#define TINY4412_SECBULK_IDVENDOR 0x04e8
#define TINY4412_SECBULK_IDPRODUCT 0x1234

#define TINY4412_RAM_BASE       0xc0000000

// TINY4412
#define RAM_BASE            TINY4412_RAM_BASE
#define VENDOR_ID           TINY4412_SECBULK_IDVENDOR
#define PRODUCT_ID          TINY4412_SECBULK_IDPRODUCT

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(!=usb_claim_interface(hdev, ))
                    {
                        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(-==fd)
    {
        perror("Cannot open file");
        return NULL;
    }
    if(-==fstat(fd, &fs))
    {
        perror("Cannot get file size");
        goto error;
    }
    write_buf = (unsigned char*)malloc(fs.st_size+);
    if(NULL==write_buf)
    {
        perror("malloc failed");
        goto error;
    }

    if(fs.st_size != read(fd, write_buf+, fs.st_size))
    {
        perror("Reading file failed");
        goto error;
    }
        unsigned short sum = ;
        int i;
        for(i=; i<fs.st_size+; i++)
        {
                sum += write_buf[i];
        }
    printf("Filename : %s\n", filename);
    printf("Filesize : %d bytes\n", (int)fs.st_size);
    printf ("Sum is %x\n",sum);

    *((u_int32_t*)write_buf) = RAM_BASE;        //download address
    *((u_int32_t*)write_buf+) = fs.st_size + ;    //download size;
    write_buf [fs.st_size + ] = sum & 0xff;
    write_buf [fs.st_size + ] = sum >> ;
    *len = fs.st_size + ;
    return write_buf;

error:
    if(fd!=-) close(fd);
    if(NULL!=write_buf) free(write_buf);
    fs.st_size = ;
    return NULL;

}

int main(int argc, char *argv[])
{
    if(!=argc)
    {
        usage();
        return ;
    }

    struct usb_dev_handle *hdev = open_port();
    if(!hdev)
    {
        return ;
    }

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

    unsigned int remain = len;
    unsigned int towrite;
    printf("Writing data ...\n");
    while(remain)
    {
        towrite = remain> ?  : remain;
        if(towrite != usb_bulk_write(hdev, 0x02, write_buf+(len-remain), towrite, ))
        {
            perror("usb_bulk_write failed");
            break;
        }
        remain-=towrite;
        printf("\r %d \t %d bytes     ", (len-remain)*/len, len-remain);
        fflush(stdout);
    }
    if(==remain) printf("Done!\n");
    return ;
}

Makefile

#******************************************************************************
#*
#*  Copyright (C) - Broadcom Corporation
#*
#*  Licensed under the Apache License, Version 2.0 (the "License");
#*  you may not use this file except in compliance with the License.
#*  You may obtain a copy of the License at
#*
#*      http://www.apache.org/licenses/LICENSE-2.0
#*
#*  Unless required by applicable law or agreed to in writing, software
#*  distributed under the License is distributed on an "AS IS" BASIS,
#*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#*  See the License for the specific language governing permissions and
#*  limitations under the License.
#*
#******************************************************************************

LDLIBS = -lusb
CFLAGS=-g

dnw: dnw.o

2. 把它保存为文件dnw.c,编译“gcc dnw2.c -o dnw -lusb”，编译完得到的dnw就是usb下载的PC端了。下载时用“dnw <filename>”下载文件到板上。也可生成的链接文件“sudo ln -s ./dnw /usr/sbin/dnw”，这样在编译完要下载文件就可以直接下载了。