Exemplo n.º 1
0
//diag_l0_elm_close : free pdl0d->dl0 (dev), call diag_tty_close.
static int
diag_l0_elm_close(struct diag_l0_device **pdl0d)
{
	assert(pdl0d != NULL);
	assert(*pdl0d != NULL);
	uint8_t buf[]="ATPC\x0D";
	elm_sendcmd(*pdl0d, buf, 5, 500, NULL);	//close protocol. So clean !
	if (pdl0d && *pdl0d) {
		struct diag_l0_device *dl0d = *pdl0d;
		struct diag_l0_elm_device *dev =
			(struct diag_l0_elm_device *)dl0d->l0_int;

		/* If debugging, print to stderr */
		if (diag_l0_debug & DIAG_DEBUG_CLOSE)
			fprintf(stderr, FLFMT "link %p closing\n",
				FL, (void *) dl0d);

		if (dev)
			free(dev);

		(void) diag_tty_close(dl0d);
		diag_l0_del(*pdl0d);
	}

	return 0;
}
Exemplo n.º 2
0
/*
 * Open the diagnostic device, returns a file descriptor
 * records original state of term interface so we can restore later
 */
static struct diag_l0_device *
diag_l0_muleng_open(const char *subinterface, int iProtocol)
{
	int rv;
	struct diag_l0_device *dl0d;
	struct diag_l0_muleng_device *dev;
	struct diag_serial_settings set;

	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "open subinterface %s protocol %d\n",
			FL, subinterface, iProtocol);
	}

	diag_l0_muleng_init();

	if ((rv=diag_calloc(&dev, 1)))
		return diag_pseterr(rv);

	dev->protocol = iProtocol;

	dl0d = diag_l0_new(&diag_l0_me, (void *)dev);
	if (!dl0d) {
		free(dev);
		return diag_pseterr(rv);
	}
	/* try to open TTY */
	if ((rv=diag_tty_open(dl0d, subinterface))) {
		diag_l0_del(dl0d);
		free(dev);
		return diag_pseterr(rv);
	}

	/* And set to 19200 baud , 8N1 */

	set.speed = 19200;
	set.databits = diag_databits_8;
	set.stopbits = diag_stopbits_1;
	set.parflag = diag_par_n;

	if ((rv=diag_tty_setup(dl0d, &set))) {
		diag_l0_muleng_close(dl0d);
		return diag_pseterr(rv);
	}

	/* And set DTR high and RTS low to power the device */
	if ((rv=diag_tty_control(dl0d, 1, 0))) {
		diag_l0_muleng_close(dl0d);
		return diag_pseterr(rv);
	}

	diag_tty_iflush(dl0d);	/* Flush unread input */

	return dl0d ;
}
Exemplo n.º 3
0
/*
 * Open the diagnostic device, returns a file descriptor
 * records original state of term interface so we can restore later
 */
static struct diag_l0_device *
diag_l0_dumb_open(const char *subinterface, int iProtocol)
{
	int rv;
	struct diag_l0_device *dl0d;
	struct diag_l0_dumb_device *dev;

	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "open subinterface %s protocol %d\n",
			FL, subinterface, iProtocol);
	}

	diag_l0_dumb_init();	 //make sure it is initted

	if ((rv=diag_calloc(&dev, 1)))
		return diag_pseterr(DIAG_ERR_NOMEM);

	dev->protocol = iProtocol;

	dl0d = diag_l0_new(&diag_l0_dumb, (void *)dev);
	if (!dl0d) {
		free(dev);
		return diag_pseterr(rv);
	}
	/* try to open TTY */
	if ((rv=diag_tty_open(dl0d, subinterface))) {
		diag_l0_del(dl0d);
		free(dev);
		return diag_pseterr(rv);
	}

	/*
	 * We set RTS to low, and DTR high, because this allows some
	 * interfaces to work than need power from the DTR/RTS lines;
	 * this is altered according to dumb_flags.
	 */
	if (diag_tty_control(dl0d, !(dumb_flags & CLEAR_DTR), (dumb_flags & SET_RTS)) < 0) {
		diag_l0_dumb_close(&dl0d);
		return diag_pseterr(DIAG_ERR_GENERAL);
	}

	if (dumb_flags & DUMBDEFAULTS)
		dumb_flags = DUMBDEFAULTS & MAN_BREAK;

	(void)diag_tty_iflush(dl0d);	/* Flush unread input */

	return dl0d;
}
Exemplo n.º 4
0
static int
diag_l0_br_close(struct diag_l0_device **pdl0d)
{
	if (pdl0d && *pdl0d) {
		struct diag_l0_device *dl0d = *pdl0d;
		struct diag_l0_br_device *dev =
			(struct diag_l0_br_device *)dl0d->l0_int;

		if (diag_l0_debug & DIAG_DEBUG_CLOSE)
			fprintf(stderr, FLFMT "link %p closing\n", FL, (void *)dl0d);

		if (dev)
			free(dev);
		(void) diag_tty_close(dl0d);
		diag_l0_del(dl0d);
	}

	return 0;
}
Exemplo n.º 5
0
static void
diag_l0_muleng_close(struct diag_l0_device *dl0d)
{
	if (!dl0d) return;
	struct diag_l0_muleng_device *dev =
		(struct diag_l0_muleng_device *)dl0d->l0_int;

	if (diag_l0_debug & DIAG_DEBUG_CLOSE)
		fprintf(stderr, FLFMT "link %p closing\n",
			FL, (void *)dl0d);

	if (dev)
		free(dev);

	diag_tty_close(dl0d);
	diag_l0_del(dl0d);

	return;
}
Exemplo n.º 6
0
/*
 * Open the diagnostic device, return a file descriptor,
 * record the original state of term interface so we can restore later
 */
static struct diag_l0_device *
diag_l0_br_open(const char *subinterface, int iProtocol)
{
	struct diag_l0_device *dl0d;
	struct diag_l0_br_device *dev;
	int rv;
	uint8_t buf[4];	/* Was MAXRBUF. We only use 1! */
	struct diag_serial_settings set;

	diag_l0_br_init();

	if ((rv=diag_calloc(&dev, 1)))
		return diag_pseterr(rv);

	dev->protocol = iProtocol;
	dev->dev_rdoffset = 0;
	dev->dev_txlen = 0;
	dev->dev_framenr = 0;
	dev->dev_state = BR_STATE_CLOSED;
	dev->dev_features = BR_FEATURE_SETADDR;

	/* Get an L0 link */
	dl0d = diag_l0_new(&diag_l0_br, (void *)dev);
	if (!dl0d) {
		free(dev);
		return diag_pseterr(rv);
	}
	/* try to open TTY */
	if ((rv=diag_tty_open(dl0d, subinterface))) {
		diag_l0_del(dl0d);
		free(dev);
		return diag_pseterr(rv);
	}

	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "features 0x%X\n", FL, dev->dev_features);
	}

	/* Set serial line to 19200 baud , 8N1 */
	set.speed = 19200;
	set.databits = diag_databits_8;
	set.stopbits = diag_stopbits_1;
	set.parflag = diag_par_n;

	if (diag_tty_setup(dl0d, &set)) {
		fprintf(stderr, FLFMT "open: TTY setup failed\n", FL);
		diag_l0_br_close(&dl0d);
		return diag_pseterr(rv);
	}

	diag_tty_iflush(dl0d);	/* Flush unread input data */

	/*
	 * Initialise the BR1 interface by sending the CHIP CONNECT
	 * (0x20h) command, we should get a 0xFF back
	 */
	buf[0] = 0x20;
	if (diag_l0_br_write(dl0d, buf, 1)) {
		if ((diag_l0_debug&DIAG_DEBUG_OPEN)) {
			fprintf(stderr, FLFMT "CHIP CONNECT write failed link %p\n",
				FL, (void *)dl0d);
		}
		diag_l0_br_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}
	/* And expect 0xff as a response */
	if (diag_tty_read(dl0d, buf, 1, 100) != 1) {
		if (diag_l0_debug & DIAG_DEBUG_OPEN) {
			fprintf(stderr, FLFMT "CHIP CONNECT read failed link %p\n",
				FL, (void *)dl0d);
		}

		diag_l0_br_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}
	if (buf[0] != 0xff) {
		if (diag_l0_debug & DIAG_DEBUG_OPEN) {
			fprintf(stderr, FLFMT "CHIP CONNECT rcvd 0x%X != 0xff, link %p\n",
				FL, buf[0], (void *)dl0d);
		}

		diag_l0_br_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}

	/* If it's J1850, send initialisation string now */
	rv = 0;
	switch (iProtocol)
	{
	case DIAG_L1_J1850_VPW:
		rv = diag_l0_br_initialise(dl0d, 0, 0);
		break;
	case DIAG_L1_J1850_PWM:
		rv = diag_l0_br_initialise(dl0d, 1, 0);
		break;
	case DIAG_L1_ISO9141:
	case DIAG_L1_ISO14230:
		/* This initialisation is done in the SLOWINIT code */
		break;
	}
	if (rv) {
		diag_l0_br_close(&dl0d);
		return diag_pseterr(rv);
	}

	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "open succeeded link %p features 0x%X\n",
			FL, (void *)dl0d, dev->dev_features);
	}
	return dl0d;
}
Exemplo n.º 7
0
/*
 * Open the diagnostic device
 * ELM settings used : no echo (E0), headers on (H1), linefeeds off (L0), mem off (M0)
 */
static struct diag_l0_device *
diag_l0_elm_open(const char *subinterface, int iProtocol)
{
	int i,rv;
	struct diag_l0_device *dl0d;
	struct diag_l0_elm_device *dev;
	struct diag_serial_settings sset;
	const uint8_t *buf;
	uint8_t rxbuf[ELM_BUFSIZE];

	const char ** elm_official;
	const char ** elm_clones;	//point to elm323_ or elm327_ clone and official version string lists

	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "open subinterface %s protocol %d\n",
			FL, subinterface, iProtocol);
	}

	diag_l0_elm_init();

	if ((rv=diag_calloc(&dev, 1)))
		return diag_pseterr(rv);

	dev->protocol = iProtocol;

	dl0d = diag_l0_new(&diag_l0_elm, (void *)dev);
	if (!dl0d) {
		free(dev);
		return diag_pseterr(rv);
	}
	/* try to open TTY */
	if ((rv=diag_tty_open(dl0d, subinterface))) {
		diag_l0_del(dl0d);
		free(dev);
		return diag_pseterr(rv);
	}

	//set speed to 38400;8n1.
	sset.speed=38400;
	sset.databits = diag_databits_8;
	sset.stopbits = diag_stopbits_1;
	sset.parflag = diag_par_n;

	dev->serial = sset;

	if ((rv=diag_tty_setup(dl0d, &sset))) {
		fprintf(stderr, FLFMT "Error setting 38400;8N1 on %s\n",
			FL, subinterface);
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(rv);
	}

	diag_tty_iflush(dl0d);	/* Flush unread input */

	//At this stage, the ELM has possibly been powered up for a while;
	//it may have an unfinished command / garbage in its input buffer. We
	//need to clear that before sending the real ATZ ==> ATI is quick and safe; elm_purge does this.

	dev->elmflags=0;	//we know nothing yet

	rv=elm_purge(dl0d);
	//if rv=0, we got a prompt so we know speed is set properly.
	if (rv==0) {
		dev->elmflags |= ELM_38400;
	} else {
		fprintf(stderr, FLFMT "sending ATI @ 38400 failed; trying @ 9600...\n", FL);

		sset.speed=9600;
		dev->serial = sset;

		if ((rv=diag_tty_setup(dl0d, &sset))) {
			fprintf(stderr, FLFMT "Error setting 9600;8N1 on %s\n",
				FL, subinterface);
			diag_l0_elm_close(&dl0d);
			return diag_pseterr(rv);
		}

		diag_tty_iflush(dl0d);	/* Flush unread input */
		rv = elm_purge(dl0d);	//try ATI\r again
		if (rv !=0) {
			fprintf(stderr, FLFMT "sending ATI @ 9600 failed. Verify connection to ELM\n", FL);
			diag_l0_elm_close(&dl0d);
			return diag_pseterr(DIAG_ERR_BADIFADAPTER);
		}
	}

	if (diag_l0_debug&DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "elm_open : sending ATZ...\n", FL);
	}

	//the command "ATZ" causes a full reset and the ELM replies with
	//a string like "ELM32x vX.Xx\n>"

	buf=(uint8_t *)"ATZ\x0D";
	rv=elm_sendcmd(dl0d, buf, 4, 2000, rxbuf);
	if (rv) {
		fprintf(stderr, FLFMT "elm_open : ATZ failed !\n", FL);
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}

	//Correct prompt received; try to identify device.
	// 1) guess 323 vs 327
	if (strstr((char *)rxbuf, "ELM323")!=NULL) {
		dev->elmflags |= ELM_323_BASIC;
		elm_official=elm323_official;
		elm_clones=elm323_clones;
	} else if (strstr((char *)rxbuf, "ELM327")!=NULL) {
		dev->elmflags |= ELM_327_BASIC;
		elm_official=elm327_official;
		elm_clones=elm327_clones;
	} else {
		fprintf(stderr, FLFMT "no valid version string !! Report this !. Got:\n%s\n", FL, rxbuf);
		//no point in continuing...
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}
	// 2) identify valid VS clone devices.
	rv=0;	// temp "device identified" flag
	for (i=0; elm_clones[i]; i++) {
		if (strstr((char *)rxbuf, elm_clones[i])) {
			printf("Clone ELM found, v%s\n", elm_clones[i]);
			dev->elmflags |= ELM_32x_CLONE;
			rv=1;
			break;
		}
	}

	if (rv==0) {
		for (i=0; elm_official[i]; i++) {
				if (strstr((char *)rxbuf, elm_official[i])) {
				printf("Official ELM found, v%s\n", elm_official[i]);
				rv=1;
				break;
			}
		}
	}

	if (rv==0) {
		//still not identified : assume clone.
		dev->elmflags |= ELM_32x_CLONE;
		printf("ELM version not recognized! Please report this ! Resp=%s\n", rxbuf);
	}

	if ((dev->elmflags & ELM_323_BASIC) && (dev->elmflags & ELM_32x_CLONE)) {
		printf("A 323 clone ? Report this !\n");
	}


	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "ELM reset success, elmflags=%#x\n", FL, dev->elmflags);
	}

	//now send "ATE0\n" command to disable echo.
	buf=(uint8_t *)"ATE0\x0D";
	if (elm_sendcmd(dl0d, buf, 5, 500, NULL)) {
		if (diag_l0_debug & DIAG_DEBUG_OPEN) {
			fprintf(stderr, FLFMT "sending \"ATE0\" failed\n", FL);
		}
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}

	//ATL0 : disable linefeeds
	buf=(uint8_t *)"ATL0\x0D";
	if (elm_sendcmd(dl0d, buf, 5, 500, NULL)) {
		if (diag_l0_debug & DIAG_DEBUG_OPEN) {
			fprintf(stderr, FLFMT "sending \"ATL0\" failed\n", FL);
		}
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}

	//ATH1 : always show header bytes
	buf=(uint8_t *)"ATH1\x0D";
	if (elm_sendcmd(dl0d, buf, 5, 500, NULL)) {
		if (diag_l0_debug & DIAG_DEBUG_OPEN) {
			fprintf(stderr, FLFMT "sending \"ATH1\" failed\n", FL);
		}
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
	}

	//for elm327 only: disable memory
	if (dev->elmflags & ELM_327_BASIC) {
		buf=(uint8_t *)"ATM0\x0D";
		if (elm_sendcmd(dl0d, buf, 5, 500, NULL)) {
			if (diag_l0_debug & DIAG_DEBUG_OPEN) {
				fprintf(stderr, FLFMT "sending \"ATM0\" failed\n", FL);
			}
			diag_l0_elm_close(&dl0d);
			return diag_pseterr(DIAG_ERR_BADIFADAPTER);
		}
	}

	//check if proto is really supported (323 supports only 9141 and 14230)
	if ((dev->elmflags & ELM_323_BASIC) &&
		((iProtocol != DIAG_L1_ISO9141) && (iProtocol != DIAG_L1_ISO14230)))
			return diag_pseterr(DIAG_ERR_PROTO_NOTSUPP);

	//if 327, set proto when possible; we won't if 14230, because init type (fast vs slow) isn't decided yet
	// CAN is also not implemented here
	buf=NULL;
	if (dev->elmflags & ELM_327_BASIC) {
		switch (iProtocol) {
		case DIAG_L1_J1850_PWM:
			buf=(uint8_t *)"ATTP1\x0D";
			break;
		case DIAG_L1_J1850_VPW:
			buf=(uint8_t *)"ATTP2\x0D";
			break;
		case DIAG_L1_ISO9141:
			buf=(uint8_t *)"ATTP3\x0D";
			break;
		default:
			buf=NULL;
		}
	}

	if (buf != NULL) {
		if (elm_sendcmd(dl0d, buf, 6, 500, NULL)) {
			if (diag_l0_debug & DIAG_DEBUG_OPEN) {
				fprintf(stderr, FLFMT "sending \"ATTPx\" failed\n", FL);
			}
		diag_l0_elm_close(&dl0d);
		return diag_pseterr(DIAG_ERR_BADIFADAPTER);
		}
	}


	//at this point : ELM is ready for further ops
	if (diag_l0_debug & DIAG_DEBUG_OPEN) {
		fprintf(stderr, FLFMT "ELM ready.\n", FL);
	}
	return dl0d;
}