[libsigrok.git] / src / hardware / asix-sigma / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2010-2012 Håvard Espeland <gus@ping.uio.no>,
 * Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no>
 * Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include "protocol.h"

/*
 * Channel numbers seem to go from 1-16, according to this image:
 * http://tools.asix.net/img/sigma_sigmacab_pins_720.jpg
 * (the cable has two additional GND pins, and a TI and TO pin)
 */
static const char *channel_names[] = {
	"1", "2", "3", "4", "5", "6", "7", "8",
	"9", "10", "11", "12", "13", "14", "15", "16",
};

static const uint32_t drvopts[] = {
	SR_CONF_LOGIC_ANALYZER,
};

static const uint32_t devopts[] = {
	SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
#if ASIX_SIGMA_WITH_TRIGGER
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
#endif
};

#if ASIX_SIGMA_WITH_TRIGGER
static const int32_t trigger_matches[] = {
	SR_TRIGGER_ZERO,
	SR_TRIGGER_ONE,
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
};
#endif

static void clear_helper(struct dev_context *devc)
{
	ftdi_deinit(&devc->ftdic);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct ftdi_device_list *devlist;
	char serial_txt[10];
	uint32_t serial;
	int ret;
	unsigned int i;

	(void)options;

	devc = g_malloc0(sizeof(struct dev_context));

	ftdi_init(&devc->ftdic);

	if ((ret = ftdi_usb_find_all(&devc->ftdic, &devlist,
	    USB_VENDOR, USB_PRODUCT)) <= 0) {
		if (ret < 0)
			sr_err("ftdi_usb_find_all(): %d", ret);
		goto free;
	}

	/* Make sure it's a version 1 or 2 SIGMA. */
	ftdi_usb_get_strings(&devc->ftdic, devlist->dev, NULL, 0, NULL, 0,
			     serial_txt, sizeof(serial_txt));
	sscanf(serial_txt, "%x", &serial);

	if (serial < 0xa6010000 || serial > 0xa602ffff) {
		sr_err("Only SIGMA and SIGMA2 are supported "
		       "in this version of libsigrok.");
		goto free;
	}

	sr_info("Found ASIX SIGMA - Serial: %s", serial_txt);

	devc->cur_samplerate = samplerates[0];
	devc->limit_msec = 0;
	devc->limit_samples = 0;
	devc->cur_firmware = -1;
	devc->num_channels = 0;
	devc->samples_per_event = 0;
	devc->capture_ratio = 50;
	devc->use_triggers = 0;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INITIALIZING;
	sdi->vendor = g_strdup("ASIX");
	sdi->model = g_strdup("SIGMA");

	for (i = 0; i < ARRAY_SIZE(channel_names); i++)
		sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]);

	sdi->priv = devc;

	ftdi_list_free(&devlist);

	return std_scan_complete(di, g_slist_append(NULL, sdi));

free:
	ftdi_deinit(&devc->ftdic);
	g_free(devc);
	return NULL;
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	int ret;

	devc = sdi->priv;

	if ((ret = ftdi_usb_open_desc(&devc->ftdic,
			USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) {
		sr_err("Failed to open device (%d): %s.",
		       ret, ftdi_get_error_string(&devc->ftdic));
		return SR_ERR;
	}

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	devc = sdi->priv;

	return (ftdi_usb_close(&devc->ftdic) == 0) ? SR_OK : SR_ERR;
}

static int config_get(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	(void)cg;

	if (!sdi)
		return SR_ERR;
	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_samplerate);
		break;
	case SR_CONF_LIMIT_MSEC:
		*data = g_variant_new_uint64(devc->limit_msec);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
#if ASIX_SIGMA_WITH_TRIGGER
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;
#endif
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(uint32_t key, GVariant *data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	uint64_t tmp;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		return sigma_set_samplerate(sdi, g_variant_get_uint64(data));
	case SR_CONF_LIMIT_MSEC:
		devc->limit_msec = g_variant_get_uint64(data);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		tmp = g_variant_get_uint64(data);
		devc->limit_samples = tmp;
		devc->limit_msec = sigma_limit_samples_to_msec(devc, tmp);
		break;
#if ASIX_SIGMA_WITH_TRIGGER
	case SR_CONF_CAPTURE_RATIO:
		tmp = g_variant_get_uint64(data);
		if (tmp > 100)
			return SR_ERR;
		devc->capture_ratio = tmp;
		break;
#endif
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		*data = std_gvar_samplerates(samplerates, samplerates_count);
		break;
#if ASIX_SIGMA_WITH_TRIGGER
	case SR_CONF_TRIGGER_MATCH:
		*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
		break;
#endif
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct clockselect_50 clockselect;
	int triggerpin, ret;
	uint8_t triggerselect;
	struct triggerinout triggerinout_conf;
	struct triggerlut lut;
	uint8_t regval;
	uint8_t clock_bytes[sizeof(clockselect)];
	size_t clock_idx;

	devc = sdi->priv;

	if (sigma_convert_trigger(sdi) != SR_OK) {
		sr_err("Failed to configure triggers.");
		return SR_ERR;
	}

	/* If the samplerate has not been set, default to 200 kHz. */
	if (devc->cur_firmware == -1) {
		if ((ret = sigma_set_samplerate(sdi, SR_KHZ(200))) != SR_OK)
			return ret;
	}

	/* Enter trigger programming mode. */
	sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc);

	triggerselect = 0;
	if (devc->cur_samplerate >= SR_MHZ(100)) {
		/* 100 and 200 MHz mode. */
		sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc);

		/* Find which pin to trigger on from mask. */
		for (triggerpin = 0; triggerpin < 8; triggerpin++)
			if ((devc->trigger.risingmask | devc->trigger.fallingmask) &
			    (1 << triggerpin))
				break;

		/* Set trigger pin and light LED on trigger. */
		triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7);

		/* Default rising edge. */
		if (devc->trigger.fallingmask)
			triggerselect |= 1 << 3;

	} else if (devc->cur_samplerate <= SR_MHZ(50)) {
		/* All other modes. */
		sigma_build_basic_trigger(&lut, devc);

		sigma_write_trigger_lut(&lut, devc);

		triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0);
	}

	/* Setup trigger in and out pins to default values. */
	memset(&triggerinout_conf, 0, sizeof(struct triggerinout));
	triggerinout_conf.trgout_bytrigger = 1;
	triggerinout_conf.trgout_enable = 1;

	sigma_write_register(WRITE_TRIGGER_OPTION,
			     (uint8_t *) &triggerinout_conf,
			     sizeof(struct triggerinout), devc);

	/* Go back to normal mode. */
	sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc);

	/* Set clock select register. */
	clockselect.async = 0;
	clockselect.fraction = 1 - 1;		/* Divider 1. */
	clockselect.disabled_channels = 0x0000;	/* All channels enabled. */
	if (devc->cur_samplerate == SR_MHZ(200)) {
		/* Enable 4 channels. */
		clockselect.disabled_channels = 0xf0ff;
	} else if (devc->cur_samplerate == SR_MHZ(100)) {
		/* Enable 8 channels. */
		clockselect.disabled_channels = 0x00ff;
	} else {
		/*
		 * 50 MHz mode, or fraction thereof. The 50MHz reference
		 * can get divided by any integer in the range 1 to 256.
		 * Divider minus 1 gets written to the hardware.
		 * (The driver lists a discrete set of sample rates, but
		 * all of them fit the above description.)
		 */
		clockselect.fraction = SR_MHZ(50) / devc->cur_samplerate - 1;
	}
	clock_idx = 0;
	clock_bytes[clock_idx++] = clockselect.async;
	clock_bytes[clock_idx++] = clockselect.fraction;
	clock_bytes[clock_idx++] = clockselect.disabled_channels & 0xff;
	clock_bytes[clock_idx++] = clockselect.disabled_channels >> 8;
	sigma_write_register(WRITE_CLOCK_SELECT, clock_bytes, clock_idx, devc);

	/* Setup maximum post trigger time. */
	sigma_set_register(WRITE_POST_TRIGGER,
			   (devc->capture_ratio * 255) / 100, devc);

	/* Start acqusition. */
	devc->start_time = g_get_monotonic_time();
	regval =  WMR_TRGRES | WMR_SDRAMWRITEEN;
#if ASIX_SIGMA_WITH_TRIGGER
	regval |= WMR_TRGEN;
#endif
	sigma_set_register(WRITE_MODE, regval, devc);

	std_session_send_df_header(sdi);

	/* Add capture source. */
	sr_session_source_add(sdi->session, -1, 0, 10, sigma_receive_data, (void *)sdi);

	devc->state.state = SIGMA_CAPTURE;

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	devc = sdi->priv;
	devc->state.state = SIGMA_IDLE;

	sr_session_source_remove(sdi->session, -1);

	return SR_OK;
}

static struct sr_dev_driver asix_sigma_driver_info = {
	.name = "asix-sigma",
	.longname = "ASIX SIGMA/SIGMA2",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(asix_sigma_driver_info);
Commit	Line	Data
3ba56876	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2010-2012 Håvard Espeland <gus@ping.uio.no>,
	5	* Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no>
	6	* Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no>
	7	*
	8	* This program is free software: you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation, either version 3 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	20	*/
	21
3ba56876	22	#include <config.h>
	23	#include "protocol.h"
	24
3ba56876	25	/*
	26	* Channel numbers seem to go from 1-16, according to this image:
	27	* http://tools.asix.net/img/sigma_sigmacab_pins_720.jpg
	28	* (the cable has two additional GND pins, and a TI and TO pin)
	29	*/
	30	static const char *channel_names[] = {
	31	"1", "2", "3", "4", "5", "6", "7", "8",
	32	"9", "10", "11", "12", "13", "14", "15", "16",
	33	};
	34
	35	static const uint32_t drvopts[] = {
	36	SR_CONF_LOGIC_ANALYZER,
	37	};
	38
	39	static const uint32_t devopts[] = {
	40	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
2f7e529c	41	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
3ba56876	42	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
de3f7acb	43	#if ASIX_SIGMA_WITH_TRIGGER
3ba56876	44	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
3ba56876	45	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
de3f7acb	46	#endif
3ba56876	47	};
3ba56876	48
eac48b34	49	#if ASIX_SIGMA_WITH_TRIGGER
3ba56876	50	static const int32_t trigger_matches[] = {
	51	SR_TRIGGER_ZERO,
	52	SR_TRIGGER_ONE,
	53	SR_TRIGGER_RISING,
	54	SR_TRIGGER_FALLING,
	55	};
eac48b34	56	#endif
3ba56876	57
3553451f	58	static void clear_helper(struct dev_context *devc)
53279f13	59	{
53279f13 UH	60	ftdi_deinit(&devc->ftdic);
	61	}
	62
3ba56876	63	static int dev_clear(const struct sr_dev_driver *di)
3ba56876	64	{
3553451f	65	return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
3ba56876	66	}
3ba56876	67
3ba56876	68	static GSList scan(struct sr_dev_driver di, GSList *options)
	69	{
	70	struct sr_dev_inst *sdi;
3ba56876	71	struct dev_context *devc;
3ba56876	72	struct ftdi_device_list *devlist;
	73	char serial_txt[10];
	74	uint32_t serial;
	75	int ret;
	76	unsigned int i;
	77
	78	(void)options;
	79
3ba56876	80	devc = g_malloc0(sizeof(struct dev_context));
	81
	82	ftdi_init(&devc->ftdic);
	83
3ba56876	84	if ((ret = ftdi_usb_find_all(&devc->ftdic, &devlist,
	85	USB_VENDOR, USB_PRODUCT)) <= 0) {
	86	if (ret < 0)
	87	sr_err("ftdi_usb_find_all(): %d", ret);
	88	goto free;
	89	}
	90
	91	/* Make sure it's a version 1 or 2 SIGMA. */
	92	ftdi_usb_get_strings(&devc->ftdic, devlist->dev, NULL, 0, NULL, 0,
	93	serial_txt, sizeof(serial_txt));
	94	sscanf(serial_txt, "%x", &serial);
	95
	96	if (serial < 0xa6010000 \|\| serial > 0xa602ffff) {
	97	sr_err("Only SIGMA and SIGMA2 are supported "
	98	"in this version of libsigrok.");
	99	goto free;
	100	}
	101
	102	sr_info("Found ASIX SIGMA - Serial: %s", serial_txt);
	103
	104	devc->cur_samplerate = samplerates[0];
3ba56876	105	devc->limit_msec = 0;
2f7e529c	106	devc->limit_samples = 0;
3ba56876	107	devc->cur_firmware = -1;
	108	devc->num_channels = 0;
	109	devc->samples_per_event = 0;
	110	devc->capture_ratio = 50;
	111	devc->use_triggers = 0;
	112
3ba56876	113	sdi = g_malloc0(sizeof(struct sr_dev_inst));
3ba56876	114	sdi->status = SR_ST_INITIALIZING;
b15ff1c9 UH	115	sdi->vendor = g_strdup("ASIX");
b15ff1c9 UH	116	sdi->model = g_strdup("SIGMA");
3ba56876	117
	118	for (i = 0; i < ARRAY_SIZE(channel_names); i++)
	119	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]);
	120
3ba56876	121	sdi->priv = devc;
3ba56876	122
3ba56876	123	ftdi_list_free(&devlist);
3ba56876	124
43376f33	125	return std_scan_complete(di, g_slist_append(NULL, sdi));
3ba56876	126
	127	free:
	128	ftdi_deinit(&devc->ftdic);
	129	g_free(devc);
	130	return NULL;
	131	}
	132
3ba56876	133	static int dev_open(struct sr_dev_inst *sdi)
	134	{
	135	struct dev_context *devc;
	136	int ret;
	137
	138	devc = sdi->priv;
	139
3ba56876	140	if ((ret = ftdi_usb_open_desc(&devc->ftdic,
7e463623 UH	141	USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) {
	142	sr_err("Failed to open device (%d): %s.",
	143	ret, ftdi_get_error_string(&devc->ftdic));
	144	return SR_ERR;
3ba56876	145	}
3ba56876	146
3ba56876	147	return SR_OK;
	148	}
	149
	150	static int dev_close(struct sr_dev_inst *sdi)
	151	{
	152	struct dev_context *devc;
	153
	154	devc = sdi->priv;
	155
f1ba6b4b	156	return (ftdi_usb_close(&devc->ftdic) == 0) ? SR_OK : SR_ERR;
3ba56876	157	}
3ba56876	158
dd7a72ea UH	159	static int config_get(uint32_t key, GVariant **data,
dd7a72ea UH	160	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
3ba56876	161	{
	162	struct dev_context *devc;
	163
	164	(void)cg;
	165
	166	if (!sdi)
	167	return SR_ERR;
	168	devc = sdi->priv;
	169
	170	switch (key) {
	171	case SR_CONF_SAMPLERATE:
	172	*data = g_variant_new_uint64(devc->cur_samplerate);
	173	break;
	174	case SR_CONF_LIMIT_MSEC:
	175	*data = g_variant_new_uint64(devc->limit_msec);
	176	break;
2f7e529c GS	177	case SR_CONF_LIMIT_SAMPLES:
	178	*data = g_variant_new_uint64(devc->limit_samples);
	179	break;
de3f7acb	180	#if ASIX_SIGMA_WITH_TRIGGER
3ba56876	181	case SR_CONF_CAPTURE_RATIO:
	182	*data = g_variant_new_uint64(devc->capture_ratio);
	183	break;
de3f7acb	184	#endif
3ba56876	185	default:
	186	return SR_ERR_NA;
	187	}
	188
	189	return SR_OK;
	190	}
	191
dd7a72ea UH	192	static int config_set(uint32_t key, GVariant *data,
dd7a72ea UH	193	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
3ba56876	194	{
	195	struct dev_context *devc;
	196	uint64_t tmp;
3ba56876	197
	198	(void)cg;
	199
3ba56876	200	devc = sdi->priv;
3ba56876	201
3ba56876	202	switch (key) {
3ba56876	203	case SR_CONF_SAMPLERATE:
758906aa	204	return sigma_set_samplerate(sdi, g_variant_get_uint64(data));
3ba56876	205	case SR_CONF_LIMIT_MSEC:
50ccb36f	206	devc->limit_msec = g_variant_get_uint64(data);
3ba56876	207	break;
	208	case SR_CONF_LIMIT_SAMPLES:
	209	tmp = g_variant_get_uint64(data);
2f7e529c	210	devc->limit_samples = tmp;
9a0a606a	211	devc->limit_msec = sigma_limit_samples_to_msec(devc, tmp);
3ba56876	212	break;
de3f7acb	213	#if ASIX_SIGMA_WITH_TRIGGER
3ba56876	214	case SR_CONF_CAPTURE_RATIO:
3ba56876	215	tmp = g_variant_get_uint64(data);
de3f7acb GS	216	if (tmp > 100)
	217	return SR_ERR;
	218	devc->capture_ratio = tmp;
3ba56876	219	break;
de3f7acb	220	#endif
3ba56876	221	default:
758906aa	222	return SR_ERR_NA;
3ba56876	223	}
3ba56876	224
758906aa	225	return SR_OK;
3ba56876	226	}
3ba56876	227
dd7a72ea UH	228	static int config_list(uint32_t key, GVariant **data,
dd7a72ea UH	229	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
3ba56876	230	{
3ba56876	231	switch (key) {
3ba56876	232	case SR_CONF_DEVICE_OPTIONS:
e66d1892	233	return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
3ba56876	234	case SR_CONF_SAMPLERATE:
463160cb	235	*data = std_gvar_samplerates(samplerates, samplerates_count);
3ba56876	236	break;
de3f7acb	237	#if ASIX_SIGMA_WITH_TRIGGER
3ba56876	238	case SR_CONF_TRIGGER_MATCH:
53012da6	239	*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
3ba56876	240	break;
de3f7acb	241	#endif
3ba56876	242	default:
	243	return SR_ERR_NA;
	244	}
	245
	246	return SR_OK;
	247	}
	248
695dc859	249	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
3ba56876	250	{
	251	struct dev_context *devc;
	252	struct clockselect_50 clockselect;
8256ed15	253	int triggerpin, ret;
f06fb3e9	254	uint8_t triggerselect;
3ba56876	255	struct triggerinout triggerinout_conf;
3ba56876	256	struct triggerlut lut;
22f64ed8	257	uint8_t regval;
8256ed15 GS	258	uint8_t clock_bytes[sizeof(clockselect)];
8256ed15 GS	259	size_t clock_idx;
3ba56876	260
3ba56876	261	devc = sdi->priv;
	262
	263	if (sigma_convert_trigger(sdi) != SR_OK) {
	264	sr_err("Failed to configure triggers.");
	265	return SR_ERR;
	266	}
	267
	268	/* If the samplerate has not been set, default to 200 kHz. */
	269	if (devc->cur_firmware == -1) {
	270	if ((ret = sigma_set_samplerate(sdi, SR_KHZ(200))) != SR_OK)
	271	return ret;
	272	}
	273
	274	/* Enter trigger programming mode. */
	275	sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc);
	276
f06fb3e9	277	triggerselect = 0;
3ba56876	278	if (devc->cur_samplerate >= SR_MHZ(100)) {
f06fb3e9	279	/* 100 and 200 MHz mode. */
3ba56876	280	sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc);
	281
	282	/* Find which pin to trigger on from mask. */
0a1f7b09	283	for (triggerpin = 0; triggerpin < 8; triggerpin++)
3ba56876	284	if ((devc->trigger.risingmask \| devc->trigger.fallingmask) &
	285	(1 << triggerpin))
	286	break;
	287
	288	/* Set trigger pin and light LED on trigger. */
	289	triggerselect = (1 << LEDSEL1) \| (triggerpin & 0x7);
	290
	291	/* Default rising edge. */
	292	if (devc->trigger.fallingmask)
	293	triggerselect \|= 1 << 3;
	294
3ba56876	295	} else if (devc->cur_samplerate <= SR_MHZ(50)) {
f06fb3e9	296	/* All other modes. */
3ba56876	297	sigma_build_basic_trigger(&lut, devc);
	298
	299	sigma_write_trigger_lut(&lut, devc);
	300
	301	triggerselect = (1 << LEDSEL1) \| (1 << LEDSEL0);
	302	}
	303
	304	/* Setup trigger in and out pins to default values. */
	305	memset(&triggerinout_conf, 0, sizeof(struct triggerinout));
	306	triggerinout_conf.trgout_bytrigger = 1;
	307	triggerinout_conf.trgout_enable = 1;
	308
	309	sigma_write_register(WRITE_TRIGGER_OPTION,
	310	(uint8_t *) &triggerinout_conf,
	311	sizeof(struct triggerinout), devc);
	312
	313	/* Go back to normal mode. */
	314	sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc);
	315
	316	/* Set clock select register. */
8256ed15 GS	317	clockselect.async = 0;
	318	clockselect.fraction = 1 - 1; /* Divider 1. */
	319	clockselect.disabled_channels = 0x0000; /* All channels enabled. */
	320	if (devc->cur_samplerate == SR_MHZ(200)) {
3ba56876	321	/* Enable 4 channels. */
8256ed15 GS	322	clockselect.disabled_channels = 0xf0ff;
8256ed15 GS	323	} else if (devc->cur_samplerate == SR_MHZ(100)) {
3ba56876	324	/* Enable 8 channels. */
8256ed15 GS	325	clockselect.disabled_channels = 0x00ff;
8256ed15 GS	326	} else {
3ba56876	327	/*
8256ed15 GS	328	* 50 MHz mode, or fraction thereof. The 50MHz reference
	329	* can get divided by any integer in the range 1 to 256.
	330	* Divider minus 1 gets written to the hardware.
	331	* (The driver lists a discrete set of sample rates, but
	332	* all of them fit the above description.)
3ba56876	333	*/
8256ed15	334	clockselect.fraction = SR_MHZ(50) / devc->cur_samplerate - 1;
3ba56876	335	}
8256ed15 GS	336	clock_idx = 0;
	337	clock_bytes[clock_idx++] = clockselect.async;
	338	clock_bytes[clock_idx++] = clockselect.fraction;
	339	clock_bytes[clock_idx++] = clockselect.disabled_channels & 0xff;
	340	clock_bytes[clock_idx++] = clockselect.disabled_channels >> 8;
	341	sigma_write_register(WRITE_CLOCK_SELECT, clock_bytes, clock_idx, devc);
3ba56876	342
	343	/* Setup maximum post trigger time. */
	344	sigma_set_register(WRITE_POST_TRIGGER,
	345	(devc->capture_ratio * 255) / 100, devc);
	346
	347	/* Start acqusition. */
2f425a56	348	devc->start_time = g_get_monotonic_time();
22f64ed8 GS	349	regval = WMR_TRGRES \| WMR_SDRAMWRITEEN;
	350	#if ASIX_SIGMA_WITH_TRIGGER
	351	regval \|= WMR_TRGEN;
	352	#endif
	353	sigma_set_register(WRITE_MODE, regval, devc);
3ba56876	354
bee2b016	355	std_session_send_df_header(sdi);
3ba56876	356
	357	/* Add capture source. */
	358	sr_session_source_add(sdi->session, -1, 0, 10, sigma_receive_data, (void *)sdi);
	359
	360	devc->state.state = SIGMA_CAPTURE;
	361
	362	return SR_OK;
	363	}
	364
695dc859	365	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
3ba56876	366	{
	367	struct dev_context *devc;
	368
3ba56876	369	devc = sdi->priv;
	370	devc->state.state = SIGMA_IDLE;
	371
	372	sr_session_source_remove(sdi->session, -1);
	373
	374	return SR_OK;
	375	}
	376
dd5c48a6	377	static struct sr_dev_driver asix_sigma_driver_info = {
3ba56876	378	.name = "asix-sigma",
	379	.longname = "ASIX SIGMA/SIGMA2",
	380	.api_version = 1,
c2fdcc25	381	.init = std_init,
700d6b64	382	.cleanup = std_cleanup,
3ba56876	383	.scan = scan,
c01bf34c	384	.dev_list = std_dev_list,
3ba56876	385	.dev_clear = dev_clear,
	386	.config_get = config_get,
	387	.config_set = config_set,
	388	.config_list = config_list,
	389	.dev_open = dev_open,
	390	.dev_close = dev_close,
	391	.dev_acquisition_start = dev_acquisition_start,
	392	.dev_acquisition_stop = dev_acquisition_stop,
	393	.context = NULL,
	394	};
dd5c48a6	395	SR_REGISTER_DEV_DRIVER(asix_sigma_driver_info);