[libsigrok.git] / hardware / uni-t-dmm / protocol.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2012-2013 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"

/*
 * Driver for various UNI-T multimeters (and rebranded ones).
 *
 * Most UNI-T DMMs can be used with two (three) different PC interface cables:
 *  - The UT-D04 USB/HID cable, old version with Hoitek HE2325U chip.
 *  - The UT-D04 USB/HID cable, new version with WCH CH9325 chip.
 *  - The UT-D02 RS232 cable.
 *
 * This driver is meant to support all USB/HID cables, and various DMMs that
 * can be attached to a PC via these cables. Currently only the UT-D04 cable
 * (new version) is supported/tested.
 * The UT-D02 RS232 cable is handled by the 'serial-dmm' driver.
 *
 * The data for one DMM packet (e.g. 14 bytes if the respective DMM uses a
 * Fortune Semiconductor FS9922-DMM4 chip) is spread across multiple
 * 8-byte chunks.
 *
 * An 8-byte chunk looks like this:
 *  - Byte 0: 0xfz, where z is the number of actual data bytes in this chunk.
 *  - Bytes 1-7: z data bytes, the rest of the bytes should be ignored.
 *
 * Example:
 *  f0 00 00 00 00 00 00 00 (no data bytes)
 *  f2 55 77 00 00 00 00 00 (2 data bytes, 0x55 and 0x77)
 *  f1 d1 00 00 00 00 00 00 (1 data byte, 0xd1)
 */

static void decode_packet(struct sr_dev_inst *sdi, int dmm, const uint8_t *buf,
			  void *info)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog analog;
	float floatval;
	int ret;

	devc = sdi->priv;
	memset(&analog, 0, sizeof(struct sr_datafeed_analog));

	/* Parse the protocol packet. */
	ret = udmms[dmm].packet_parse(buf, &floatval, &analog, info);
	if (ret != SR_OK) {
		sr_dbg("Invalid DMM packet, ignoring.");
		return;
	}

	/* If this DMM needs additional handling, call the resp. function. */
	if (udmms[dmm].dmm_details)
		udmms[dmm].dmm_details(&analog, info);

	/* Send a sample packet with one analog value. */
	analog.probes = sdi->probes;
	analog.num_samples = 1;
	analog.data = &floatval;
	packet.type = SR_DF_ANALOG;
	packet.payload = &analog;
	sr_session_send(devc->cb_data, &packet);

	/* Increase sample count. */
	devc->num_samples++;
}

static int hid_chip_init(struct sr_dev_inst *sdi, uint16_t baudrate)
{
	int ret;
	uint8_t buf[5];
	struct sr_usb_dev_inst *usb;

	usb = sdi->conn;
	
	/* Detach kernel drivers which grabbed this device (if any). */
	if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
		ret = libusb_detach_kernel_driver(usb->devhdl, 0);
		if (ret < 0) {
			sr_err("Failed to detach kernel driver: %s.",
			       libusb_error_name(ret));
			return SR_ERR;
		}
		sr_dbg("Successfully detached kernel driver.");
	} else {
		sr_dbg("No need to detach a kernel driver.");
	}

	/* Claim interface 0. */
	if ((ret = libusb_claim_interface(usb->devhdl, 0)) < 0) {
		sr_err("Failed to claim interface 0: %s.",
		       libusb_error_name(ret));
		return SR_ERR;
	}
	sr_dbg("Successfully claimed interface 0.");

	/* Set data for the HID feature report (e.g. baudrate). */
	buf[0] = baudrate & 0xff;        /* Baudrate, LSB */
	buf[1] = (baudrate >> 8) & 0xff; /* Baudrate, MSB */
	buf[2] = 0x00;                   /* Unknown/unused (?) */
	buf[3] = 0x00;                   /* Unknown/unused (?) */
	buf[4] = 0x03;                   /* Unknown, always 0x03. */

	/* Send HID feature report to setup the baudrate/chip. */
	sr_dbg("Sending initial HID feature report.");
	sr_spew("HID init = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x (%d baud)",
		buf[0], buf[1], buf[2], buf[3], buf[4], baudrate);
	ret = libusb_control_transfer(
		usb->devhdl, /* libusb device handle */
		LIBUSB_REQUEST_TYPE_CLASS |
		LIBUSB_RECIPIENT_INTERFACE |
		LIBUSB_ENDPOINT_OUT,
		9, /* bRequest: HID set_report */
		0x300, /* wValue: HID feature, report number 0 */
		0, /* wIndex: interface 0 */
		(unsigned char *)&buf, /* payload buffer */
		5, /* wLength: 5 bytes payload */
		1000 /* timeout (ms) */);

	if (ret < 0) {
		sr_err("HID feature report error: %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	if (ret != 5) {
		/* TODO: Handle better by also sending the remaining bytes. */
		sr_err("Short packet: sent %d/5 bytes.", ret);
		return SR_ERR;
	}

	sr_dbg("Successfully sent initial HID feature report.");

	return SR_OK;
}

static void log_8byte_chunk(const uint8_t *buf)
{
	sr_spew("8-byte chunk: %02x %02x %02x %02x %02x %02x %02x %02x "
		"(%d data bytes)", buf[0], buf[1], buf[2], buf[3],
		buf[4], buf[5], buf[6], buf[7], (buf[0] & 0x0f));
}

static void log_dmm_packet(const uint8_t *buf)
{
	sr_dbg("DMM packet:   %02x %02x %02x %02x %02x %02x %02x"
	       " %02x %02x %02x %02x %02x %02x %02x",
	       buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6],
	       buf[7], buf[8], buf[9], buf[10], buf[11], buf[12], buf[13]);
}

static int get_and_handle_data(struct sr_dev_inst *sdi, int dmm, void *info)
{
	struct dev_context *devc;
	uint8_t buf[CHUNK_SIZE], *pbuf;
	int i, ret, len, num_databytes_in_chunk;
	struct sr_usb_dev_inst *usb;

	devc = sdi->priv;
	usb = sdi->conn;
	pbuf = devc->protocol_buf;

	/* On the first run, we need to init the HID chip. */
	if (devc->first_run) {
		if ((ret = hid_chip_init(sdi, udmms[dmm].baudrate)) != SR_OK) {
			sr_err("HID chip init failed: %d.", ret);
			return SR_ERR;
		}
		memset(pbuf, 0x00, DMM_BUFSIZE);
		devc->first_run = FALSE;
	}

	memset(&buf, 0x00, CHUNK_SIZE);

	/* Get data from EP2 using an interrupt transfer. */
	ret = libusb_interrupt_transfer(
		usb->devhdl, /* libusb device handle */
		LIBUSB_ENDPOINT_IN | 2, /* EP2, IN */
		(unsigned char *)&buf, /* receive buffer */
		CHUNK_SIZE, /* wLength */
		&len, /* actually received byte count */
		1000 /* timeout (ms) */);

	if (ret < 0) {
		sr_err("USB receive error: %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	if (len != CHUNK_SIZE) {
		sr_err("Short packet: received %d/%d bytes.", len, CHUNK_SIZE);
		/* TODO: Print the bytes? */
		return SR_ERR;
	}

	log_8byte_chunk((const uint8_t *)&buf);

	/* If there are no data bytes just return (without error). */
	if (buf[0] == 0xf0)
		return SR_OK;

	devc->bufoffset = 0;

	/* Append the 1-7 data bytes of this chunk to pbuf. */
	num_databytes_in_chunk = buf[0] & 0x0f;
	for (i = 0; i < num_databytes_in_chunk; i++)
		pbuf[devc->buflen++] = buf[1 + i];

	/* Now look for packets in that data. */
	while ((devc->buflen - devc->bufoffset) >= udmms[dmm].packet_size) {
		if (udmms[dmm].packet_valid(pbuf + devc->bufoffset)) {
			log_dmm_packet(pbuf + devc->bufoffset);
			decode_packet(sdi, dmm, pbuf + devc->bufoffset, info);
			devc->bufoffset += udmms[dmm].packet_size;
		} else {
			devc->bufoffset++;
		}
	}

	/* Move remaining bytes to beginning of buffer. */
	for (i = 0; i < devc->buflen - devc->bufoffset; i++)
		pbuf[i] = pbuf[devc->bufoffset + i];
	devc->buflen -= devc->bufoffset;

	return SR_OK;
}

static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data)
{
	int ret;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	int64_t time_ms;

	(void)fd;
	(void)revents;

	sdi = cb_data;
	devc = sdi->priv;

	if ((ret = get_and_handle_data(sdi, dmm, info)) != SR_OK)
		return FALSE;

	/* Abort acquisition if we acquired enough samples. */
	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
		sr_info("Requested number of samples reached.");
		sdi->driver->dev_acquisition_stop(sdi, cb_data);
	}

	if (devc->limit_msec) {
		time_ms = (g_get_monotonic_time() - devc->starttime) / 1000;
		if (time_ms > (int64_t)devc->limit_msec) {
			sr_info("Requested time limit reached.");
			sdi->driver->dev_acquisition_stop(sdi, cb_data);
			return TRUE;
		}
	}

	return TRUE;
}

#define RECEIVE_DATA(ID_UPPER, DMM_DRIVER) \
SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \
	struct DMM_DRIVER##_info info; \
	return receive_data(fd, revents, ID_UPPER, &info, cb_data); }

/* Driver-specific receive_data() wrappers */
RECEIVE_DATA(TECPEL_DMM_8061, fs9721)
RECEIVE_DATA(UNI_T_UT60A, fs9721)
RECEIVE_DATA(UNI_T_UT60E, fs9721)
RECEIVE_DATA(UNI_T_UT61D, fs9922)
RECEIVE_DATA(UNI_T_UT61E, es51922)
RECEIVE_DATA(VOLTCRAFT_VC820, fs9721)
RECEIVE_DATA(VOLTCRAFT_VC830, fs9922)
RECEIVE_DATA(VOLTCRAFT_VC840, fs9721)
Commit	Line	Data
79081ec8	1	/*
50985c20	2	* This file is part of the libsigrok project.
79081ec8	3	*
bc653a56	4	* Copyright (C) 2012-2013 Uwe Hermann <uwe@hermann-uwe.de>
79081ec8 UH	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <string.h>
	22	#include <glib.h>
	23	#include "libsigrok.h"
	24	#include "libsigrok-internal.h"
	25	#include "protocol.h"
	26
	27	/*
	28	* Driver for various UNI-T multimeters (and rebranded ones).
	29	*
	30	* Most UNI-T DMMs can be used with two (three) different PC interface cables:
	31	* - The UT-D04 USB/HID cable, old version with Hoitek HE2325U chip.
	32	* - The UT-D04 USB/HID cable, new version with WCH CH9325 chip.
c8852687	33	* - The UT-D02 RS232 cable.
79081ec8	34	*
c8852687	35	* This driver is meant to support all USB/HID cables, and various DMMs that
79081ec8	36	* can be attached to a PC via these cables. Currently only the UT-D04 cable
c8852687 UH	37	* (new version) is supported/tested.
c8852687 UH	38	* The UT-D02 RS232 cable is handled by the 'serial-dmm' driver.
79081ec8 UH	39	*
	40	* The data for one DMM packet (e.g. 14 bytes if the respective DMM uses a
	41	* Fortune Semiconductor FS9922-DMM4 chip) is spread across multiple
	42	* 8-byte chunks.
	43	*
	44	* An 8-byte chunk looks like this:
	45	* - Byte 0: 0xfz, where z is the number of actual data bytes in this chunk.
	46	* - Bytes 1-7: z data bytes, the rest of the bytes should be ignored.
	47	*
	48	* Example:
	49	* f0 00 00 00 00 00 00 00 (no data bytes)
	50	* f2 55 77 00 00 00 00 00 (2 data bytes, 0x55 and 0x77)
	51	* f1 d1 00 00 00 00 00 00 (1 data byte, 0xd1)
79081ec8 UH	52	*/
79081ec8 UH	53
c8852687 UH	54	static void decode_packet(struct sr_dev_inst sdi, int dmm, const uint8_t buf,
c8852687 UH	55	void *info)
79081ec8	56	{
bc653a56	57	struct dev_context *devc;
79081ec8 UH	58	struct sr_datafeed_packet packet;
	59	struct sr_datafeed_analog analog;
	60	float floatval;
	61	int ret;
	62
69e19dd7	63	devc = sdi->priv;
79081ec8 UH	64	memset(&analog, 0, sizeof(struct sr_datafeed_analog));
	65
	66	/* Parse the protocol packet. */
bc653a56	67	ret = udmms[dmm].packet_parse(buf, &floatval, &analog, info);
fdbcb86d	68	if (ret != SR_OK) {
bc653a56	69	sr_dbg("Invalid DMM packet, ignoring.");
79081ec8 UH	70	return;
	71	}
	72
c8852687 UH	73	/* If this DMM needs additional handling, call the resp. function. */
	74	if (udmms[dmm].dmm_details)
	75	udmms[dmm].dmm_details(&analog, info);
	76
79081ec8	77	/* Send a sample packet with one analog value. */
69e19dd7	78	analog.probes = sdi->probes;
79081ec8 UH	79	analog.num_samples = 1;
	80	analog.data = &floatval;
	81	packet.type = SR_DF_ANALOG;
	82	packet.payload = &analog;
	83	sr_session_send(devc->cb_data, &packet);
	84
	85	/* Increase sample count. */
	86	devc->num_samples++;
	87	}
	88
3ece1dff	89	static int hid_chip_init(struct sr_dev_inst *sdi, uint16_t baudrate)
79081ec8 UH	90	{
	91	int ret;
	92	uint8_t buf[5];
3ece1dff	93	struct sr_usb_dev_inst *usb;
79081ec8	94
3ece1dff UH	95	usb = sdi->conn;
3ece1dff UH	96
79081ec8	97	/* Detach kernel drivers which grabbed this device (if any). */
3ece1dff UH	98	if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
3ece1dff UH	99	ret = libusb_detach_kernel_driver(usb->devhdl, 0);
79081ec8	100	if (ret < 0) {
d4928d71 PS	101	sr_err("Failed to detach kernel driver: %s.",
d4928d71 PS	102	libusb_error_name(ret));
79081ec8 UH	103	return SR_ERR;
	104	}
	105	sr_dbg("Successfully detached kernel driver.");
	106	} else {
	107	sr_dbg("No need to detach a kernel driver.");
	108	}
	109
	110	/* Claim interface 0. */
3ece1dff	111	if ((ret = libusb_claim_interface(usb->devhdl, 0)) < 0) {
d4928d71 PS	112	sr_err("Failed to claim interface 0: %s.",
d4928d71 PS	113	libusb_error_name(ret));
79081ec8 UH	114	return SR_ERR;
	115	}
	116	sr_dbg("Successfully claimed interface 0.");
	117
bc653a56	118	/* Set data for the HID feature report (e.g. baudrate). */
79081ec8 UH	119	buf[0] = baudrate & 0xff; /* Baudrate, LSB */
	120	buf[1] = (baudrate >> 8) & 0xff; /* Baudrate, MSB */
	121	buf[2] = 0x00; /* Unknown/unused (?) */
	122	buf[3] = 0x00; /* Unknown/unused (?) */
	123	buf[4] = 0x03; /* Unknown, always 0x03. */
	124
	125	/* Send HID feature report to setup the baudrate/chip. */
	126	sr_dbg("Sending initial HID feature report.");
	127	sr_spew("HID init = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x (%d baud)",
	128	buf[0], buf[1], buf[2], buf[3], buf[4], baudrate);
	129	ret = libusb_control_transfer(
3ece1dff	130	usb->devhdl, /* libusb device handle */
79081ec8 UH	131	LIBUSB_REQUEST_TYPE_CLASS \|
	132	LIBUSB_RECIPIENT_INTERFACE \|
	133	LIBUSB_ENDPOINT_OUT,
	134	9, /* bRequest: HID set_report */
	135	0x300, /* wValue: HID feature, report number 0 */
	136	0, /* wIndex: interface 0 */
	137	(unsigned char )&buf, / payload buffer */
	138	5, /* wLength: 5 bytes payload */
	139	1000 /* timeout (ms) */);
	140
	141	if (ret < 0) {
d4928d71	142	sr_err("HID feature report error: %s.", libusb_error_name(ret));
79081ec8 UH	143	return SR_ERR;
	144	}
	145
	146	if (ret != 5) {
	147	/* TODO: Handle better by also sending the remaining bytes. */
	148	sr_err("Short packet: sent %d/5 bytes.", ret);
	149	return SR_ERR;
	150	}
	151
	152	sr_dbg("Successfully sent initial HID feature report.");
	153
	154	return SR_OK;
	155	}
	156
	157	static void log_8byte_chunk(const uint8_t *buf)
	158	{
	159	sr_spew("8-byte chunk: %02x %02x %02x %02x %02x %02x %02x %02x "
	160	"(%d data bytes)", buf[0], buf[1], buf[2], buf[3],
	161	buf[4], buf[5], buf[6], buf[7], (buf[0] & 0x0f));
	162	}
	163
	164	static void log_dmm_packet(const uint8_t *buf)
	165	{
	166	sr_dbg("DMM packet: %02x %02x %02x %02x %02x %02x %02x"
	167	" %02x %02x %02x %02x %02x %02x %02x",
	168	buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6],
	169	buf[7], buf[8], buf[9], buf[10], buf[11], buf[12], buf[13]);
	170	}
	171
bc653a56	172	static int get_and_handle_data(struct sr_dev_inst sdi, int dmm, void info)
79081ec8	173	{
79081ec8	174	struct dev_context *devc;
bc653a56	175	uint8_t buf[CHUNK_SIZE], *pbuf;
79081ec8	176	int i, ret, len, num_databytes_in_chunk;
3ece1dff	177	struct sr_usb_dev_inst *usb;
79081ec8	178
79081ec8	179	devc = sdi->priv;
3ece1dff	180	usb = sdi->conn;
79081ec8 UH	181	pbuf = devc->protocol_buf;
	182
	183	/* On the first run, we need to init the HID chip. */
bc653a56	184	if (devc->first_run) {
3ece1dff	185	if ((ret = hid_chip_init(sdi, udmms[dmm].baudrate)) != SR_OK) {
79081ec8	186	sr_err("HID chip init failed: %d.", ret);
bc653a56	187	return SR_ERR;
79081ec8	188	}
bc653a56 UH	189	memset(pbuf, 0x00, DMM_BUFSIZE);
bc653a56 UH	190	devc->first_run = FALSE;
79081ec8 UH	191	}
	192
	193	memset(&buf, 0x00, CHUNK_SIZE);
	194
	195	/* Get data from EP2 using an interrupt transfer. */
	196	ret = libusb_interrupt_transfer(
3ece1dff	197	usb->devhdl, /* libusb device handle */
79081ec8 UH	198	LIBUSB_ENDPOINT_IN \| 2, /* EP2, IN */
	199	(unsigned char )&buf, / receive buffer */
	200	CHUNK_SIZE, /* wLength */
	201	&len, /* actually received byte count */
	202	1000 /* timeout (ms) */);
	203
	204	if (ret < 0) {
d4928d71	205	sr_err("USB receive error: %s.", libusb_error_name(ret));
bc653a56	206	return SR_ERR;
79081ec8 UH	207	}
	208
	209	if (len != CHUNK_SIZE) {
	210	sr_err("Short packet: received %d/%d bytes.", len, CHUNK_SIZE);
	211	/* TODO: Print the bytes? */
bc653a56	212	return SR_ERR;
79081ec8 UH	213	}
	214
	215	log_8byte_chunk((const uint8_t *)&buf);
	216
bc653a56 UH	217	/* If there are no data bytes just return (without error). */
	218	if (buf[0] == 0xf0)
	219	return SR_OK;
	220
	221	devc->bufoffset = 0;
	222
	223	/* Append the 1-7 data bytes of this chunk to pbuf. */
	224	num_databytes_in_chunk = buf[0] & 0x0f;
	225	for (i = 0; i < num_databytes_in_chunk; i++)
	226	pbuf[devc->buflen++] = buf[1 + i];
	227
	228	/* Now look for packets in that data. */
	229	while ((devc->buflen - devc->bufoffset) >= udmms[dmm].packet_size) {
	230	if (udmms[dmm].packet_valid(pbuf + devc->bufoffset)) {
	231	log_dmm_packet(pbuf + devc->bufoffset);
	232	decode_packet(sdi, dmm, pbuf + devc->bufoffset, info);
	233	devc->bufoffset += udmms[dmm].packet_size;
	234	} else {
	235	devc->bufoffset++;
79081ec8	236	}
bc653a56	237	}
79081ec8	238
bc653a56 UH	239	/* Move remaining bytes to beginning of buffer. */
	240	for (i = 0; i < devc->buflen - devc->bufoffset; i++)
	241	pbuf[i] = pbuf[devc->bufoffset + i];
	242	devc->buflen -= devc->bufoffset;
79081ec8	243
bc653a56 UH	244	return SR_OK;
	245	}
	246
	247	static int receive_data(int fd, int revents, int dmm, void info, void cb_data)
	248	{
	249	int ret;
	250	struct sr_dev_inst *sdi;
	251	struct dev_context *devc;
c5ffac41	252	int64_t time_ms;
c8852687	253
bc653a56 UH	254	(void)fd;
bc653a56 UH	255	(void)revents;
c8852687	256
bc653a56 UH	257	sdi = cb_data;
bc653a56 UH	258	devc = sdi->priv;
c8852687	259
bc653a56 UH	260	if ((ret = get_and_handle_data(sdi, dmm, info)) != SR_OK)
bc653a56 UH	261	return FALSE;
79081ec8 UH	262
79081ec8 UH	263	/* Abort acquisition if we acquired enough samples. */
35e199da	264	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
79081ec8 UH	265	sr_info("Requested number of samples reached.");
	266	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	267	}
	268
c5ffac41 UH	269	if (devc->limit_msec) {
	270	time_ms = (g_get_monotonic_time() - devc->starttime) / 1000;
	271	if (time_ms > (int64_t)devc->limit_msec) {
	272	sr_info("Requested time limit reached.");
	273	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	274	return TRUE;
	275	}
	276	}
	277
79081ec8 UH	278	return TRUE;
79081ec8 UH	279	}
fdbcb86d	280
c8852687 UH	281	#define RECEIVE_DATA(ID_UPPER, DMM_DRIVER) \
	282	SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \
	283	struct DMM_DRIVER##_info info; \
	284	return receive_data(fd, revents, ID_UPPER, &info, cb_data); }
fdbcb86d	285
c8852687	286	/* Driver-specific receive_data() wrappers */
b6bad47c	287	RECEIVE_DATA(TECPEL_DMM_8061, fs9721)
a7a163a7 FK	288	RECEIVE_DATA(UNI_T_UT60A, fs9721)
a7a163a7 FK	289	RECEIVE_DATA(UNI_T_UT60E, fs9721)
c8852687	290	RECEIVE_DATA(UNI_T_UT61D, fs9922)
bbef5e32	291	RECEIVE_DATA(UNI_T_UT61E, es51922)
c8852687	292	RECEIVE_DATA(VOLTCRAFT_VC820, fs9721)
c1345749	293	RECEIVE_DATA(VOLTCRAFT_VC830, fs9922)
695d0e1e	294	RECEIVE_DATA(VOLTCRAFT_VC840, fs9721)