Esempio n. 1
0
static int buspirate_start_spi_mode_ascii(struct programmer_t *pgm)
{
	int spi_cmd = -1;
	int cmd;
	char *rcvd, mode[11], buf[5];

	buspirate_send(pgm, "m\n");
	while(1) {
		rcvd = buspirate_readline(pgm, NULL, 0);
		if (spi_cmd == -1 && sscanf(rcvd, "%d. %10s", &cmd, mode)) {
			if (strcmp(mode, "SPI") == 0)
				spi_cmd = cmd;
		}
		if (buspirate_is_prompt(rcvd))
			break;
	}
	if (spi_cmd == -1) {
		fprintf(stderr,
				"%s: SPI mode number not found. Does your BusPirate support SPI?\n",
				progname);
		fprintf(stderr, "%s: Try powercycling your BusPirate and try again.\n",
				progname);
		return -1;
	}
	snprintf(buf, sizeof(buf), "%d\n", spi_cmd);
	buspirate_send(pgm, buf);
	buf[0] = '\0';
	while (1) {
		rcvd = buspirate_readline(pgm, NULL, 0);
		if (strstr(rcvd, "Normal (H=3.3V, L=GND)")) {
			/* BP firmware 2.1 defaults to Open-drain output.
			 * That doesn't work on my board, even with pull-up
			 * resistors. Select 3.3V output mode instead. */
			sscanf(rcvd, " %d.", &cmd);
			snprintf(buf, sizeof(buf), "%d\n", cmd);
		}
		if (buspirate_is_prompt(rcvd)) {
			if (strncmp(rcvd, "SPI>", 4) == 0) {
				fprintf(stderr, "BusPirate is now configured for SPI\n");
				break;
			}
			/* Not yet 'SPI>' prompt */
			if (buf[0]) {
				buspirate_send(pgm, buf);
				buf[0] = '\0';
			} else
				buspirate_send(pgm, "\n");
		}
	}
	return 0;
}
Esempio n. 2
0
static int buspirate_cmd_ascii(struct programmer_t *pgm,
				unsigned char cmd[4],
				unsigned char res[4])
{
	char buf[25];
	char *rcvd;
	int spi_write, spi_read, i = 0;

	snprintf(buf, sizeof(buf), "0x%02x 0x%02x 0x%02x 0x%02x\n",
		cmd[0], cmd[1], cmd[2], cmd[3]);
	buspirate_send(pgm, buf);
	while (i < 4) {
		rcvd = buspirate_readline(pgm, NULL, 0);
		/* WRITE: 0xAC READ: 0x04 */
		if (sscanf(rcvd, "WRITE: 0x%x READ: 0x%x", &spi_write, &spi_read) == 2) {
			res[i++] = spi_read;
		}
		if (buspirate_is_prompt(rcvd))
			break;
	}

	if (i != 4) {
		fprintf(stderr, "%s: error: SPI has not read 4 bytes back\n", progname);
		return -1;
	}

	/* wait for prompt */
	while (buspirate_getc(pgm) != '>')
		/* do nothing */;

	return 0;
}
Esempio n. 3
0
static int buspirate_expect(struct programmer_t *pgm, char *send,
				char *expect, int wait_for_prompt)
{
	int got_it = 0;
	size_t expect_len = strlen(expect);
	char *rcvd;

	buspirate_send(pgm, send);
	while (1) {
		rcvd = buspirate_readline(pgm, NULL, 0);

		if (strncmp(rcvd, expect, expect_len) == 0) {
			if (! wait_for_prompt) {
				serial_drain(&pgm->fd, 0);
				return 1;
			} else {
				got_it = 1;
			}
		}

		if (buspirate_is_prompt(rcvd))
			break;
	}
	return got_it;
}
Esempio n. 4
0
static int buspirate_send(struct programmer_t *pgm, char *str)
{
	int rc;

	if (verbose)
		fprintf(stderr, "%s: buspirate_send(): %s", progname, str);

	if (pgm->flag & BP_FLAG_IN_BINMODE) {
		fprintf(stderr, "BusPirate: Internal error: buspirate_send() called from binmode");
		exit(1);
	}

	rc = serial_send(&pgm->fd, (unsigned char *)str, strlen(str));
	if (rc)
		return rc;
	while (strcmp(buspirate_readline(pgm, NULL, 0), str) != 0)
		/* keep reading until we get what we sent there */
		;
	/* by now we should be in sync */
	return 0;
}