dfutool.c

这是Linux环境下的蓝牙源代码

	if (!strcmp(str, "CSR-dfu1") || !strcmp(str, "CSR-dfu2")) {
		crc = crc32_init();
		for (i = 0; i < size - DFU_SUFFIX_SIZE; i++)
			crc = crc32_byte(crc, buf[i]);

		printf("Firmware type\t%s\n", str);
		printf("Firmware check\t%s checksum\n", crc == 0 ? "valid" : "corrupt");
		printf("\n");
	}

	free(buf);

	close(fd);
}

static void cmd_modify(char *device, int argc, char **argv)
{
}

static void cmd_upgrade(char *device, int argc, char **argv)
{
	struct usb_dev_handle *udev;
	struct dfu_status status;
	struct dfu_suffix suffix;
	struct stat st;
	char *buf;
	unsigned long filesize, count, timeout = 0;
	char *filename;
	uint32_t crc, dwCRC;
	int fd, i, block, len, size, sent = 0, try = 10;

	if (argc < 2) {
		usage();
		exit(1);
	}

	filename = argv[1];

	if (stat(filename, &st) < 0) {
		perror("Can't access firmware");
		exit(1);
	}

	filesize = st.st_size;

	if (!(buf = malloc(filesize))) {
		perror("Unable to allocate file buffer"); 
		exit(1);
	}

	if ((fd = open(filename, O_RDONLY)) < 0) {
		perror("Can't open firmware");
		free(buf);
		exit(1);
	}

	if (read(fd, buf, filesize) < filesize) {
		perror("Can't load firmware");
		free(buf);
		close(fd);
		exit(1);
	}

	memcpy(&suffix, buf + filesize - DFU_SUFFIX_SIZE, sizeof(suffix));
	dwCRC = le32_to_cpu(suffix.dwCRC);

	printf("Filename\t%s\n", basename(filename));
	printf("Filesize\t%ld\n", filesize);

	crc = crc32_init();
	for (i = 0; i < filesize - 4; i++)
		crc = crc32_byte(crc, buf[i]);

	printf("Checksum\t%08x (%s)\n", crc,
			crc == dwCRC ? "valid" : "corrupt");

	if (crc != dwCRC) {
		free(buf);
		close(fd);
		exit(1);
	}

	printf("\n");

	udev = open_device(device, &suffix);
	if (!udev)
		exit(1);

	printf("\r" "          " "          " "          " "          " "          ");
	printf("\rFirmware download ... ");
	fflush(stdout);

	count = filesize - DFU_SUFFIX_SIZE;
	block = 0;

	while (count) {
		size = (count > 1023) ? 1023 : count;

		if (dfu_get_status(udev, 0, &status) < 0) {
			if (try-- > 0) {
				sleep(1);
				continue;
			}
			printf("\rCan't get status: %s (%d)\n", strerror(errno), errno);
			goto done;
		}

		if (status.bStatus != DFU_OK) {
			if (try-- > 0) {
				dfu_clear_status(udev, 0);
				sleep(1);
				continue;
			}
			printf("\rFirmware download ... aborting (status %d state %d)\n",
						status.bStatus, status.bState);
			goto done;
		}

		if (status.bState != DFU_STATE_DFU_IDLE &&
				status.bState != DFU_STATE_DFU_DNLOAD_IDLE) {
			sleep(1);
			continue;
		}

		timeout = (status.bwPollTimeout[2] << 16) |
				(status.bwPollTimeout[1] << 8) |
					status.bwPollTimeout[0];

		usleep(timeout * 1000);

		len = dfu_download(udev, 0, block, buf + sent, size);
		if (len < 0) {
			if (try-- > 0) {
				sleep(1);
				continue;
			}
			printf("\rCan't upload next block: %s (%d)\n", strerror(errno), errno);
			goto done;
		}

		printf("\rFirmware download ... %d bytes ", block * 1023 + len);
		fflush(stdout);

		sent  += len;
		count -= len;
		block++;
	}

	printf("\r" "          " "          " "          " "          " "          ");
	printf("\rFinishing firmware download ... ");
	fflush(stdout);

	sleep(1);

	if (dfu_get_status(udev, 0, &status) < 0) {
		printf("\rCan't get status: %s (%d)\n", strerror(errno), errno);
		goto done;
	}

	timeout = (status.bwPollTimeout[2] << 16) |
			(status.bwPollTimeout[1] << 8) |
				status.bwPollTimeout[0];

	usleep(timeout * 1000);

	if (count == 0) {
		len = dfu_download(udev, 0, block, NULL, 0);
		if (len < 0) {
			printf("\rCan't send final block: %s (%d)\n", strerror(errno), errno);
			goto done;
		}
	}

	printf("\r" "          " "          " "          " "          " "          ");
	printf("\rWaiting for device ... ");
	fflush(stdout);

	sleep(10);

	printf("\n");

done:
	free(buf);
	close(fd);

	usb_release_interface(udev, 0);
	usb_reset(udev);
	usb_close(udev);
}

static void cmd_archive(char *device, int argc, char **argv)
{
	struct usb_dev_handle *udev;
	struct dfu_status status;
	struct dfu_suffix suffix;
	char buf[2048];
	unsigned long timeout = 0;
	char *filename;
	uint32_t crc;
	int fd, i, n, len, try = 8;

	if (argc < 2) {
		usage();
		exit(1);
	}

	filename = argv[1];

	udev = open_device(device, &suffix);
	if (!udev)
		exit(1);

	fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
	if (fd < 0) {
		printf("Can't open firmware file: %s (%d)\n", strerror(errno), errno);
		goto done;
	}

	printf("\r" "          " "          " "          " "          " "          ");
	printf("\rFirmware upload ... ");
	fflush(stdout);

	crc = crc32_init();
	n = 0;
	while (1) {
		if (dfu_get_status(udev, 0, &status) < 0) {
			if (try-- > 0) {
				sleep(1);
				continue;
			}
			printf("\rCan't get status: %s (%d)\n", strerror(errno), errno);
			goto done;
		}

		if (status.bStatus != DFU_OK) {
			if (try-- > 0) {
				dfu_clear_status(udev, 0);
				sleep(1);
				continue;
			}
			printf("\rFirmware upload ... aborting (status %d state %d)\n",
						status.bStatus, status.bState);
			goto done;
		}

		if (status.bState != DFU_STATE_DFU_IDLE &&
				status.bState != DFU_STATE_UPLOAD_IDLE) {
			sleep(1);
			continue;
		}

		timeout = (status.bwPollTimeout[2] << 16) |
				(status.bwPollTimeout[1] << 8) |
					status.bwPollTimeout[0];

		usleep(timeout * 1000);

		len = dfu_upload(udev, 0, n, buf, 1023);
		if (len < 0) {
			if (try-- > 0) {
				sleep(1);
				continue;
			}
			printf("\rCan't upload next block: %s (%d)\n", strerror(errno), errno);
			goto done;
		}

		printf("\rFirmware upload ... %d bytes ", n * 1023 + len);
		fflush(stdout);

		for (i = 0; i < len; i++)
			crc = crc32_byte(crc, buf[i]);

		if (len > 0) {
			if (write(fd, buf, len) < 0) {
				printf("\rCan't write next block: %s (%d)\n", strerror(errno), errno);
				goto done;
			}
		}

		n++;
		if (len != 1023)
			break;
	}
	printf("\n");

	suffix.bcdDFU = cpu_to_le16(0x0100);
	suffix.ucDfuSignature[0] = 'U';
	suffix.ucDfuSignature[1] = 'F';
	suffix.ucDfuSignature[2] = 'D';
	suffix.bLength = DFU_SUFFIX_SIZE;

	memcpy(buf, &suffix, DFU_SUFFIX_SIZE);
	for (i = 0; i < DFU_SUFFIX_SIZE - 4; i++)
		crc = crc32_byte(crc, buf[i]);

	suffix.dwCRC = cpu_to_le32(crc);

	if (write(fd, &suffix, DFU_SUFFIX_SIZE) < 0)
		printf("Can't write suffix block: %s (%d)\n", strerror(errno), errno);

done:
	close(fd);

	usb_release_interface(udev, 0);
	usb_reset(udev);
	usb_close(udev);
}

struct {
	char *cmd;
	char *alt;
	void (*func)(char *device, int argc, char **argv);
	char *opt;
	char *doc;
} command[] = {
	{ "verify",  "check",    cmd_verify,  "<dfu-file>", "Check firmware file"         },
	{ "modify",  "change",   cmd_modify,  "<dfu-file>", "Change firmware attributes"  },
	{ "upgrade", "download", cmd_upgrade, "<dfu-file>", "Download a new firmware"     },
	{ "archive", "upload",   cmd_archive, "<dfu-file>", "Upload the current firmware" },
	{ NULL, NULL, NULL, 0, 0 }
};

static void usage(void)
{
	int i;

	printf("dfutool - Device Firmware Upgrade utility ver %s\n\n", VERSION);

	printf("Usage:\n"
		"\tdfutool [options] <command>\n"
		"\n");

	printf("Options:\n"
		"\t-d, --device <device>   USB device\n"
		"\t-h, --help              Display help\n"
		"\n");

	printf("Commands:\n");
	for (i = 0; command[i].cmd; i++)
		printf("\t%-8s %-10s\t%s\n", command[i].cmd,
		command[i].opt ? command[i].opt : " ",
		command[i].doc);
	printf("\n");
}

static struct option main_options[] = {
	{ "help",	0, 0, 'h' },
	{ "device",	1, 0, 'd' },
	{ 0, 0, 0, 0 }
};

int main(int argc, char *argv[])
{
	char *device = NULL;
	int i, opt;

	while ((opt = getopt_long(argc, argv, "+d:h", main_options, NULL)) != -1) {
		switch(opt) {
		case 'd':
			device = strdup(optarg);
			break;

		case 'h':
			usage();
			exit(0);

		default:
			exit(0);
		}
	}

	argc -= optind;
	argv += optind;
	optind = 0;

	if (argc < 1) {
		usage();
		exit(1);
	}

	usb_init();

	for (i = 0; command[i].cmd; i++) {
		if (strcmp(command[i].cmd, argv[0]) && strcmp(command[i].alt, argv[0]))
			continue;
		command[i].func(device, argc, argv);
		exit(0);
	}

	usage();
	exit(1);
}