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 <[email protected]>
* * 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。