[S2C2440]_dnw2工具

已解决Cannot claim interface: Device or resource busy错误，

使用dnw2是不需要另外安装驱动的

安装需要的类库 $sudo apt-get install libusb-dev

不同的flash要在那个表单中加入一些设备相关的信息类似ID号，在程序加载的时候自动读取

芯片内部ID和这个相比较，没有注册的设备是不会被系统支持的，将设备插入uab口，用dmesg

可以看到新设备添加的信息，或者，可以通过lsusb获得idProduct和idVendor,需要在插上板子，

并准备下载时此时设备连上时lsusb；

#define QQ2440_SECBULK_IDVENDOR 0x5345

#define QQ2440_SECBULK_IDPRODUCT 0x1234

然后编译就可以了

            gcc -o dnw2 dnw2.c -lusb

/* dnw2 linux main file. This depends on libusb.
*
* Author: Fox 
* License: GPL
*
*/
#include 
#include 
#include 
#include 
#include 
#include 

#define QQ2440_SECBULK_IDVENDOR 0x5345
#define QQ2440_SECBULK_IDPRODUCT 0x1234


struct usb_dev_handle * open_port()
{
	struct usb_bus *busses, *bus;
        int ret = 0;
	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
				{
					ret = 0;
                                        ret = usb_detach_kernel_driver_np(hdev, 0);
                                        printf("usb_detach_kernel_driver_np: ret %d\n", ret);

                                        ret = usb_set_configuration(hdev, 1);
                                        printf("usb_set_configuration: ret %d\n", ret);
                                        if (ret < 0) {
                                        	perror("Failed to set configuration\n");
                                        	usb_close(hdev);
                                        	hdev = NULL;
					}
					
				}
				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;
}
* License: GPL
*
*/
#include 
#include 
#include 
#include 
#include 
#include 

#define QQ2440_SECBULK_IDVENDOR 0x5345
#define QQ2440_SECBULK_IDPRODUCT 0x1234


struct usb_dev_handle * open_port()
{
	struct usb_bus *busses, *bus;
        int ret = 0;
	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
				{
					ret = 0;
                                        ret = usb_detach_kernel_driver_np(hdev, 0);
                                        printf("usb_detach_kernel_driver_np: ret %d\n", ret);

                                        ret = usb_set_configuration(hdev, 1);
                                        printf("usb_set_configuration: ret %d\n", ret);
                                        if (ret < 0) {
                                        	perror("Failed to set configuration\n");
                                        	usb_close(hdev);
                                        	hdev = NULL;
					}
					
				}
				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;
}