[libsigrok.git] / src / hardware / hantek-4032l / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2016 Andreas Zschunke <andreas.zschunke@gmx.net>
 * Copyright (C) 2017 Andrej Valek <andy@skyrain.eu>
 * Copyright (C) 2017 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 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"

#define USB_INTERFACE 0
#define NUM_CHANNELS 32

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
};

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

static const uint32_t devopts[] = {
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
	SR_CONF_CONN | SR_CONF_GET,
	SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_SET | SR_CONF_LIST,
};

static const int32_t trigger_matches[] = {
	SR_TRIGGER_ZERO,
	SR_TRIGGER_ONE,
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
	SR_TRIGGER_EDGE,
};

static const uint64_t samplerates[] = {
	SR_KHZ(1),
	SR_KHZ(2),
	SR_KHZ(4),
	SR_KHZ(8),
	SR_KHZ(16),
	SR_HZ(31250),
	SR_HZ(62500),
	SR_KHZ(125),
	SR_KHZ(250),
	SR_KHZ(500),
	SR_KHZ(625),
	SR_HZ(781250),
	SR_MHZ(1),
	SR_KHZ(1250),
	SR_HZ(1562500),
	SR_MHZ(2),
	SR_KHZ(2500),
	SR_KHZ(3125),
	SR_MHZ(4),
	SR_MHZ(5),
	SR_KHZ(6250),
	SR_MHZ(10),
	SR_KHZ(12500),
	SR_MHZ(20),
	SR_MHZ(25),
	SR_MHZ(40),
	SR_MHZ(50),
	SR_MHZ(80),
	SR_MHZ(100),
	SR_MHZ(160),
	SR_MHZ(200),
	SR_MHZ(320),
	SR_MHZ(400),
};

static const uint64_t samplerates_hw[] = {
	SR_MHZ(100),
	SR_MHZ(50),
	SR_MHZ(25),
	SR_KHZ(12500),
	SR_KHZ(6250),
	SR_KHZ(3125),
	SR_HZ(1562500),
	SR_HZ(781250),
	SR_MHZ(80),
	SR_MHZ(40),
	SR_MHZ(20),
	SR_MHZ(10),
	SR_MHZ(5),
	SR_KHZ(2500),
	SR_KHZ(1250),
	SR_KHZ(625),
	SR_MHZ(4),
	SR_MHZ(2),
	SR_MHZ(1),
	SR_KHZ(500),
	SR_KHZ(250),
	SR_KHZ(125),
	SR_HZ(62500),
	SR_HZ(31250),
	SR_KHZ(16),
	SR_KHZ(8),
	SR_KHZ(4),
	SR_KHZ(2),
	SR_KHZ(1),
	0,
	0,
	0,
	SR_MHZ(200),
	SR_MHZ(160),
	SR_MHZ(400),
	SR_MHZ(320),
};

SR_PRIV struct sr_dev_driver hantek_4032l_driver_info;

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct drv_context *drvc = di->context;
	GSList *l, *devices, *conn_devices;
	libusb_device **devlist;
	struct libusb_device_descriptor des;
	const char *conn;
	int i;
	char connection_id[64];
	struct sr_channel_group *cg;
	struct sr_dev_inst *sdi;
	struct sr_channel *ch;

	devices = NULL;
	conn_devices = NULL;
	drvc->instances = NULL;
	conn = NULL;

	for (l = options; l; l = l->next) {
		struct sr_config *src = l->data;
		if (src->key == SR_CONF_CONN) {
			conn = g_variant_get_string(src->data, NULL);
			break;
		}
	}

	if (conn)
		conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	else
		conn_devices = NULL;

	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	for (i = 0; devlist[i]; i++) {
		if (conn) {
			struct sr_usb_dev_inst *usb = NULL;
			for (l = conn_devices; l; l = l->next) {
				usb = l->data;
				if (usb->bus == libusb_get_bus_number(devlist[i])
					&& usb->address == libusb_get_device_address(devlist[i]))
					break;
			}
			if (!l)
				/* This device matched none of the ones that
				 * matched the conn specification. */
				continue;
		}

		libusb_get_device_descriptor(devlist[i], &des);

		if (des.idVendor != H4032L_USB_VENDOR ||
		    des.idProduct != H4032L_USB_PRODUCT)
			continue;

		usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));

		sdi = g_malloc0(sizeof(struct sr_dev_inst));
		sdi->driver = &hantek_4032l_driver_info;
		sdi->vendor = g_strdup("Hantek");
		sdi->model = g_strdup("4032L");
		sdi->connection_id = g_strdup(connection_id);

		struct sr_channel_group *channel_groups[2];
		for (int j = 0; j < 2; j++) {
			cg = g_malloc0(sizeof(struct sr_channel_group));
			cg->name = g_strdup_printf("%c", 'A' + j);
			channel_groups[j] = cg;
			sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
		}

		/* Assemble channel list and add channel to channel groups. */
		for (int j = 0; j < NUM_CHANNELS; j++) {
			char channel_name[4];
			sprintf(channel_name, "%c%d", 'A' + (j & 1), j / 2);
			ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE, channel_name);
			cg = channel_groups[j & 1];
			cg->channels = g_slist_append(cg->channels, ch);
		}

		struct dev_context *devc = g_malloc0(sizeof(struct dev_context));

		/* Initialize command packet. */
		devc->cmd_pkt.magic = H4032L_CMD_PKT_MAGIC;
		devc->cmd_pkt.pwm_a = h4032l_voltage2pwm(2.5);
		devc->cmd_pkt.pwm_b = h4032l_voltage2pwm(2.5);
		devc->cmd_pkt.sample_size = 16384;
		devc->cmd_pkt.pre_trigger_size = 1024;

		devc->status = H4032L_STATUS_IDLE;

		devc->capture_ratio = 5;

		devc->usb_transfer = libusb_alloc_transfer(0);

		sdi->priv = devc;
		devices = g_slist_append(devices, sdi);

		sdi->status = SR_ST_INACTIVE;
		sdi->inst_type = SR_INST_USB;
		sdi->conn = sr_usb_dev_inst_new(
			libusb_get_bus_number(devlist[i]),
			libusb_get_device_address(devlist[i]), NULL);
	}

	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
	libusb_free_device_list(devlist, 1);

	return std_scan_complete(di, devices);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_usb_dev_inst *usb = sdi->conn;
	int ret;

	ret = h4032l_dev_open(sdi);
	if (ret != SR_OK) {
		sr_err("Unable to open device.");
		return SR_ERR;
	}

	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	if (ret != 0) {
		switch (ret) {
		case LIBUSB_ERROR_BUSY:
			sr_err("Unable to claim USB interface. Another "
			       "program or driver has already claimed it.");
			break;
		case LIBUSB_ERROR_NO_DEVICE:
			sr_err("Device has been disconnected.");
			break;
		default:
			sr_err("Unable to claim interface: %s.",
			       libusb_error_name(ret));
			break;
		}

		return SR_ERR;
	}

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct sr_usb_dev_inst *usb;

	usb = sdi->conn;

	if (!usb->devhdl)
		return SR_ERR_BUG;

	sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
		usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	libusb_close(usb->devhdl);
	usb->devhdl = NULL;

	return SR_OK;
}

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 = sdi->priv;
	struct sr_usb_dev_inst *usb;

	(void)cg;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(samplerates_hw[devc->cmd_pkt.sample_rate]);
		break;
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->cmd_pkt.sample_size);
		break;
	case SR_CONF_CONN:
		if (!sdi || !(usb = sdi->conn))
			return SR_ERR_ARG;
		*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
		break;
	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 = sdi->priv;
	struct h4032l_cmd_pkt *cmd_pkt = &devc->cmd_pkt;

	(void)cg;

	switch (key) {
	case SR_CONF_SAMPLERATE: {
			uint64_t sample_rate = g_variant_get_uint64(data);
			uint8_t i = 0;
			while (i < ARRAY_SIZE(samplerates_hw) && samplerates_hw[i] != sample_rate)
				i++;

			if (i == ARRAY_SIZE(samplerates_hw) || sample_rate == 0) {
				sr_err("invalid sample rate");
				return SR_ERR_SAMPLERATE;
			}
			cmd_pkt->sample_rate = i;

			return SR_OK;
		}
	case SR_CONF_CAPTURE_RATIO:
		devc->capture_ratio = g_variant_get_uint64(data);
		return SR_OK;
	case SR_CONF_LIMIT_SAMPLES: {
			uint64_t number_samples = g_variant_get_uint64(data);
			number_samples += 511;
			number_samples &= 0xfffffe00;
			if (number_samples < 2048
			    || number_samples > 64 * 1024 * 1024) {
				sr_err("invalid sample range 2k...64M: %ld",
				       number_samples);
				return SR_ERR;
			}
			cmd_pkt->sample_size = number_samples;
			return SR_OK;
		}
	case SR_CONF_VOLTAGE_THRESHOLD: {
			double d1, d2;
			g_variant_get(data, "(dd)", &d1, &d2);
			devc->cmd_pkt.pwm_a = h4032l_voltage2pwm(d1);
			devc->cmd_pkt.pwm_b = h4032l_voltage2pwm(d2);
			return SR_OK;
		}
	}

	return SR_ERR_NA;
}

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_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
		break;
	case SR_CONF_TRIGGER_MATCH:
		*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
		break;
	case SR_CONF_VOLTAGE_THRESHOLD:
		*data = std_gvar_tuple_double(2.5, 2.5);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di = sdi->driver;
	struct drv_context *drvc = di->context;
	struct dev_context *devc = sdi->priv;
	struct sr_trigger *trigger = sr_session_trigger_get(sdi->session);
	struct h4032l_cmd_pkt *cmd_pkt = &devc->cmd_pkt;

	/* Calculate packet ratio. */
	cmd_pkt->pre_trigger_size = (cmd_pkt->sample_size * devc->capture_ratio) / 100;

	cmd_pkt->trig_flags.enable_trigger1 = 0;
	cmd_pkt->trig_flags.enable_trigger2 = 0;
	cmd_pkt->trig_flags.trigger_and_logic = 0;

	if (trigger && trigger->stages) {
		GSList *stages = trigger->stages;
		struct sr_trigger_stage *stage1 = stages->data;
		if (stages->next) {
			sr_err("only one trigger stage supported for now");
			return SR_ERR;
		}
		cmd_pkt->trig_flags.enable_trigger1 = 1;
		cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_DISABLED;
		cmd_pkt->trigger[0].flags.data_range_enabled = 0;
		cmd_pkt->trigger[0].flags.time_range_enabled = 0;
		cmd_pkt->trigger[0].flags.combined_enabled = 0;
		cmd_pkt->trigger[0].flags.data_range_type = H4032L_TRIGGER_DATA_RANGE_TYPE_MAX;
		cmd_pkt->trigger[0].data_range_mask = 0;
		cmd_pkt->trigger[0].data_range_max = 0;

		/* Initialize range mask values. */
		uint32_t range_mask = 0;
		uint32_t range_value = 0;

		GSList *channel = stage1->matches;
		while (channel) {
			struct sr_trigger_match *match = channel->data;

			switch (match->match) {
			case SR_TRIGGER_ZERO:
				range_mask |= (1 << match->channel->index);
				break;
			case SR_TRIGGER_ONE:
				range_mask |= (1 << match->channel->index);
				range_value |= (1 << match->channel->index);
				break;
			case SR_TRIGGER_RISING:
				if (cmd_pkt->trigger[0].flags.edge_type != H4032L_TRIGGER_EDGE_TYPE_DISABLED) {
					sr_err("only one trigger signal with fall/rising/edge allowed");
					return SR_ERR;
				}
				cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_RISE;
				cmd_pkt->trigger[0].flags.edge_signal = match->channel->index;
				break;
			case SR_TRIGGER_FALLING:
				if (cmd_pkt->trigger[0].flags.edge_type != H4032L_TRIGGER_EDGE_TYPE_DISABLED) {
					sr_err("only one trigger signal with fall/rising/edge allowed");
					return SR_ERR;
				}
				cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_FALL;
				cmd_pkt->trigger[0].flags.edge_signal = match->channel->index;
				break;
			case SR_TRIGGER_EDGE:
				if (cmd_pkt->trigger[0].flags.edge_type != H4032L_TRIGGER_EDGE_TYPE_DISABLED) {
					sr_err("only one trigger signal with fall/rising/edge allowed");
					return SR_ERR;
				}
				cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_TOGGLE;
				cmd_pkt->trigger[0].flags.edge_signal = match->channel->index;
				break;
			default:
				sr_err("unknown trigger value");
				return SR_ERR;
			}

			channel = channel->next;
		}

		/* Compress range mask value and apply range settings. */
		if (range_mask) {
			cmd_pkt->trigger[0].flags.data_range_enabled = 1;
			cmd_pkt->trigger[0].data_range_mask |= (range_mask);

			uint32_t new_range_value = 0;
			uint32_t bit_mask = 1;
			while (range_mask) {
				if ((range_mask & 1) != 0) {
					new_range_value <<= 1;
					if ((range_value & 1) != 0)
						new_range_value |= bit_mask;
					bit_mask <<= 1;
				}
				range_mask >>= 1;
				range_value >>= 1;
			}
			cmd_pkt->trigger[0].data_range_max |= range_value;
		}
	}

	usb_source_add(sdi->session, drvc->sr_ctx, 10000,
		h4032l_receive_data, sdi->driver->context);

	/* Start capturing. */
	return h4032l_start(sdi);
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	(void)sdi;

	/* TODO: stop acquisition. */

	return SR_OK;
}

SR_PRIV struct sr_dev_driver hantek_4032l_driver_info = {
	.name = "hantek-4032l",
	.longname = "Hantek 4032L",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = std_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(hantek_4032l_driver_info);
Commit	Line	Data
6a25fa42 AZ	1	/*
	2	* This file is part of the libsigrok project.
	3	*
5089a143 AZ	4	* Copyright (C) 2016 Andreas Zschunke <andreas.zschunke@gmx.net>
	5	* Copyright (C) 2017 Andrej Valek <andy@skyrain.eu>
	6	* Copyright (C) 2017 Uwe Hermann <uwe@hermann-uwe.de>
6a25fa42 AZ	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
	22	#include <config.h>
	23	#include "protocol.h"
	24
5089a143 AZ	25	#define USB_INTERFACE 0
5089a143 AZ	26	#define NUM_CHANNELS 32
6a25fa42	27
5089a143 AZ	28	static const uint32_t scanopts[] = {
	29	SR_CONF_CONN,
	30	};
	31
	32	static const uint32_t drvopts[] = {
	33	SR_CONF_LOGIC_ANALYZER,
	34	};
	35
	36	static const uint32_t devopts[] = {
	37	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	38	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
	39	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	40	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	41	SR_CONF_CONN \| SR_CONF_GET,
	42	SR_CONF_VOLTAGE_THRESHOLD \| SR_CONF_SET \| SR_CONF_LIST,
	43	};
	44
	45	static const int32_t trigger_matches[] = {
	46	SR_TRIGGER_ZERO,
	47	SR_TRIGGER_ONE,
	48	SR_TRIGGER_RISING,
	49	SR_TRIGGER_FALLING,
	50	SR_TRIGGER_EDGE,
	51	};
	52
	53	static const uint64_t samplerates[] = {
	54	SR_KHZ(1),
	55	SR_KHZ(2),
	56	SR_KHZ(4),
	57	SR_KHZ(8),
	58	SR_KHZ(16),
	59	SR_HZ(31250),
	60	SR_HZ(62500),
	61	SR_KHZ(125),
	62	SR_KHZ(250),
	63	SR_KHZ(500),
	64	SR_KHZ(625),
	65	SR_HZ(781250),
	66	SR_MHZ(1),
	67	SR_KHZ(1250),
	68	SR_HZ(1562500),
	69	SR_MHZ(2),
	70	SR_KHZ(2500),
	71	SR_KHZ(3125),
	72	SR_MHZ(4),
	73	SR_MHZ(5),
	74	SR_KHZ(6250),
	75	SR_MHZ(10),
	76	SR_KHZ(12500),
	77	SR_MHZ(20),
	78	SR_MHZ(25),
	79	SR_MHZ(40),
	80	SR_MHZ(50),
	81	SR_MHZ(80),
	82	SR_MHZ(100),
	83	SR_MHZ(160),
	84	SR_MHZ(200),
	85	SR_MHZ(320),
	86	SR_MHZ(400),
	87	};
	88
	89	static const uint64_t samplerates_hw[] = {
	90	SR_MHZ(100),
	91	SR_MHZ(50),
92	SR_MHZ(25),
93	SR_KHZ(12500),
94	SR_KHZ(6250),
95	SR_KHZ(3125),
96	SR_HZ(1562500),
97	SR_HZ(781250),
98	SR_MHZ(80),
99	SR_MHZ(40),
100	SR_MHZ(20),
101	SR_MHZ(10),
102	SR_MHZ(5),
103	SR_KHZ(2500),
104	SR_KHZ(1250),
105	SR_KHZ(625),
106	SR_MHZ(4),
107	SR_MHZ(2),
108	SR_MHZ(1),
109	SR_KHZ(500),
110	SR_KHZ(250),
111	SR_KHZ(125),
112	SR_HZ(62500),
113	SR_HZ(31250),
114	SR_KHZ(16),
115	SR_KHZ(8),
116	SR_KHZ(4),
117	SR_KHZ(2),
118	SR_KHZ(1),
119	0,
120	0,
121	0,
122	SR_MHZ(200),
123	SR_MHZ(160),
124	SR_MHZ(400),
125	SR_MHZ(320),
126	};
127
128	SR_PRIV struct sr_dev_driver hantek_4032l_driver_info;
6a25fa42 AZ	129
	130	static GSList scan(struct sr_dev_driver di, GSList *options)
	131	{
5089a143 AZ	132	struct drv_context *drvc = di->context;
	133	GSList l, devices, *conn_devices;
	134	libusb_device **devlist;
	135	struct libusb_device_descriptor des;
	136	const char *conn;
	137	int i;
	138	char connection_id[64];
	139	struct sr_channel_group *cg;
	140	struct sr_dev_inst *sdi;
	141	struct sr_channel *ch;
6a25fa42 AZ	142
6a25fa42 AZ	143	devices = NULL;
5089a143	144	conn_devices = NULL;
6a25fa42	145	drvc->instances = NULL;
5089a143 AZ	146	conn = NULL;
	147
	148	for (l = options; l; l = l->next) {
	149	struct sr_config *src = l->data;
	150	if (src->key == SR_CONF_CONN) {
	151	conn = g_variant_get_string(src->data, NULL);
	152	break;
	153	}
	154	}
6a25fa42	155
5089a143 AZ	156	if (conn)
	157	conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	158	else
	159	conn_devices = NULL;
	160
	161	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	162	for (i = 0; devlist[i]; i++) {
	163	if (conn) {
	164	struct sr_usb_dev_inst *usb = NULL;
	165	for (l = conn_devices; l; l = l->next) {
	166	usb = l->data;
	167	if (usb->bus == libusb_get_bus_number(devlist[i])
	168	&& usb->address == libusb_get_device_address(devlist[i]))
	169	break;
	170	}
	171	if (!l)
	172	/* This device matched none of the ones that
	173	* matched the conn specification. */
	174	continue;
	175	}
	176
	177	libusb_get_device_descriptor(devlist[i], &des);
	178
	179	if (des.idVendor != H4032L_USB_VENDOR \|\|
	180	des.idProduct != H4032L_USB_PRODUCT)
	181	continue;
	182
	183	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	184
	185	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	186	sdi->driver = &hantek_4032l_driver_info;
	187	sdi->vendor = g_strdup("Hantek");
	188	sdi->model = g_strdup("4032L");
	189	sdi->connection_id = g_strdup(connection_id);
	190
	191	struct sr_channel_group *channel_groups[2];
	192	for (int j = 0; j < 2; j++) {
	193	cg = g_malloc0(sizeof(struct sr_channel_group));
	194	cg->name = g_strdup_printf("%c", 'A' + j);
	195	channel_groups[j] = cg;
	196	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	197	}
	198
	199	/* Assemble channel list and add channel to channel groups. */
	200	for (int j = 0; j < NUM_CHANNELS; j++) {
	201	char channel_name[4];
	202	sprintf(channel_name, "%c%d", 'A' + (j & 1), j / 2);
	203	ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE, channel_name);
	204	cg = channel_groups[j & 1];
	205	cg->channels = g_slist_append(cg->channels, ch);
	206	}
	207
	208	struct dev_context *devc = g_malloc0(sizeof(struct dev_context));
	209
	210	/* Initialize command packet. */
	211	devc->cmd_pkt.magic = H4032L_CMD_PKT_MAGIC;
	212	devc->cmd_pkt.pwm_a = h4032l_voltage2pwm(2.5);
	213	devc->cmd_pkt.pwm_b = h4032l_voltage2pwm(2.5);
	214	devc->cmd_pkt.sample_size = 16384;
	215	devc->cmd_pkt.pre_trigger_size = 1024;
	216
	217	devc->status = H4032L_STATUS_IDLE;
	218
	219	devc->capture_ratio = 5;
220
221	devc->usb_transfer = libusb_alloc_transfer(0);
222
223	sdi->priv = devc;
224	devices = g_slist_append(devices, sdi);
225
226	sdi->status = SR_ST_INACTIVE;
227	sdi->inst_type = SR_INST_USB;
228	sdi->conn = sr_usb_dev_inst_new(
229	libusb_get_bus_number(devlist[i]),
230	libusb_get_device_address(devlist[i]), NULL);
231	}
6a25fa42	232
5089a143 AZ	233	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
5089a143 AZ	234	libusb_free_device_list(devlist, 1);
6a25fa42	235
5089a143	236	return std_scan_complete(di, devices);
6a25fa42 AZ	237	}
	238
	239	static int dev_open(struct sr_dev_inst *sdi)
	240	{
5089a143 AZ	241	struct sr_usb_dev_inst *usb = sdi->conn;
5089a143 AZ	242	int ret;
6a25fa42	243
5089a143 AZ	244	ret = h4032l_dev_open(sdi);
	245	if (ret != SR_OK) {
	246	sr_err("Unable to open device.");
	247	return SR_ERR;
	248	}
6a25fa42	249
5089a143 AZ	250	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	251	if (ret != 0) {
	252	switch (ret) {
	253	case LIBUSB_ERROR_BUSY:
	254	sr_err("Unable to claim USB interface. Another "
	255	"program or driver has already claimed it.");
	256	break;
	257	case LIBUSB_ERROR_NO_DEVICE:
	258	sr_err("Device has been disconnected.");
	259	break;
	260	default:
	261	sr_err("Unable to claim interface: %s.",
	262	libusb_error_name(ret));
	263	break;
	264	}
	265
	266	return SR_ERR;
	267	}
6a25fa42 AZ	268
	269	return SR_OK;
	270	}
	271
	272	static int dev_close(struct sr_dev_inst *sdi)
	273	{
5089a143	274	struct sr_usb_dev_inst *usb;
6a25fa42	275
5089a143	276	usb = sdi->conn;
6a25fa42	277
5089a143 AZ	278	if (!usb->devhdl)
5089a143 AZ	279	return SR_ERR_BUG;
6a25fa42	280
5089a143 AZ	281	sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
	282	usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
	283	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	284	libusb_close(usb->devhdl);
	285	usb->devhdl = NULL;
6a25fa42 AZ	286
	287	return SR_OK;
	288	}
	289
	290	static int config_get(uint32_t key, GVariant **data,
	291	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	292	{
5089a143 AZ	293	struct dev_context *devc = sdi->priv;
5089a143 AZ	294	struct sr_usb_dev_inst *usb;
6a25fa42	295
6a25fa42 AZ	296	(void)cg;
6a25fa42 AZ	297
6a25fa42	298	switch (key) {
5089a143 AZ	299	case SR_CONF_SAMPLERATE:
	300	*data = g_variant_new_uint64(samplerates_hw[devc->cmd_pkt.sample_rate]);
	301	break;
	302	case SR_CONF_CAPTURE_RATIO:
	303	*data = g_variant_new_uint64(devc->capture_ratio);
	304	break;
	305	case SR_CONF_LIMIT_SAMPLES:
	306	*data = g_variant_new_uint64(devc->cmd_pkt.sample_size);
	307	break;
	308	case SR_CONF_CONN:
	309	if (!sdi \|\| !(usb = sdi->conn))
	310	return SR_ERR_ARG;
	311	*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
	312	break;
6a25fa42 AZ	313	default:
	314	return SR_ERR_NA;
	315	}
	316
5089a143	317	return SR_OK;
6a25fa42 AZ	318	}
	319
	320	static int config_set(uint32_t key, GVariant *data,
	321	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	322	{
5089a143 AZ	323	struct dev_context *devc = sdi->priv;
5089a143 AZ	324	struct h4032l_cmd_pkt *cmd_pkt = &devc->cmd_pkt;
6a25fa42	325
6a25fa42 AZ	326	(void)cg;
6a25fa42 AZ	327
6a25fa42	328	switch (key) {
5089a143 AZ	329	case SR_CONF_SAMPLERATE: {
	330	uint64_t sample_rate = g_variant_get_uint64(data);
	331	uint8_t i = 0;
	332	while (i < ARRAY_SIZE(samplerates_hw) && samplerates_hw[i] != sample_rate)
	333	i++;
	334
	335	if (i == ARRAY_SIZE(samplerates_hw) \|\| sample_rate == 0) {
	336	sr_err("invalid sample rate");
	337	return SR_ERR_SAMPLERATE;
	338	}
	339	cmd_pkt->sample_rate = i;
	340
	341	return SR_OK;
	342	}
	343	case SR_CONF_CAPTURE_RATIO:
	344	devc->capture_ratio = g_variant_get_uint64(data);
	345	return SR_OK;
	346	case SR_CONF_LIMIT_SAMPLES: {
	347	uint64_t number_samples = g_variant_get_uint64(data);
	348	number_samples += 511;
	349	number_samples &= 0xfffffe00;
	350	if (number_samples < 2048
	351	\|\| number_samples > 64 * 1024 * 1024) {
	352	sr_err("invalid sample range 2k...64M: %ld",
	353	number_samples);
	354	return SR_ERR;
	355	}
	356	cmd_pkt->sample_size = number_samples;
	357	return SR_OK;
	358	}
	359	case SR_CONF_VOLTAGE_THRESHOLD: {
	360	double d1, d2;
	361	g_variant_get(data, "(dd)", &d1, &d2);
	362	devc->cmd_pkt.pwm_a = h4032l_voltage2pwm(d1);
	363	devc->cmd_pkt.pwm_b = h4032l_voltage2pwm(d2);
	364	return SR_OK;
	365	}
6a25fa42 AZ	366	}
6a25fa42 AZ	367
5089a143	368	return SR_ERR_NA;
6a25fa42 AZ	369	}
	370
	371	static int config_list(uint32_t key, GVariant **data,
	372	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	373	{
6a25fa42	374	switch (key) {
5089a143 AZ	375	case SR_CONF_SCAN_OPTIONS:
	376	case SR_CONF_DEVICE_OPTIONS:
	377	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	378	case SR_CONF_SAMPLERATE:
	379	*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
	380	break;
	381	case SR_CONF_TRIGGER_MATCH:
	382	*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
	383	break;
	384	case SR_CONF_VOLTAGE_THRESHOLD:
	385	*data = std_gvar_tuple_double(2.5, 2.5);
	386	break;
6a25fa42 AZ	387	default:
	388	return SR_ERR_NA;
	389	}
	390
5089a143	391	return SR_OK;
6a25fa42 AZ	392	}
6a25fa42 AZ	393
5089a143	394	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
6a25fa42	395	{
5089a143 AZ	396	struct sr_dev_driver *di = sdi->driver;
	397	struct drv_context *drvc = di->context;
	398	struct dev_context *devc = sdi->priv;
	399	struct sr_trigger *trigger = sr_session_trigger_get(sdi->session);
	400	struct h4032l_cmd_pkt *cmd_pkt = &devc->cmd_pkt;
	401
	402	/* Calculate packet ratio. */
	403	cmd_pkt->pre_trigger_size = (cmd_pkt->sample_size * devc->capture_ratio) / 100;
	404
	405	cmd_pkt->trig_flags.enable_trigger1 = 0;
	406	cmd_pkt->trig_flags.enable_trigger2 = 0;
	407	cmd_pkt->trig_flags.trigger_and_logic = 0;
	408
	409	if (trigger && trigger->stages) {
	410	GSList *stages = trigger->stages;
	411	struct sr_trigger_stage *stage1 = stages->data;
	412	if (stages->next) {
	413	sr_err("only one trigger stage supported for now");
	414	return SR_ERR;
	415	}
	416	cmd_pkt->trig_flags.enable_trigger1 = 1;
	417	cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_DISABLED;
	418	cmd_pkt->trigger[0].flags.data_range_enabled = 0;
	419	cmd_pkt->trigger[0].flags.time_range_enabled = 0;
	420	cmd_pkt->trigger[0].flags.combined_enabled = 0;
	421	cmd_pkt->trigger[0].flags.data_range_type = H4032L_TRIGGER_DATA_RANGE_TYPE_MAX;
	422	cmd_pkt->trigger[0].data_range_mask = 0;
	423	cmd_pkt->trigger[0].data_range_max = 0;
	424
	425	/* Initialize range mask values. */
	426	uint32_t range_mask = 0;
	427	uint32_t range_value = 0;
	428
	429	GSList *channel = stage1->matches;
	430	while (channel) {
	431	struct sr_trigger_match *match = channel->data;
	432
	433	switch (match->match) {
	434	case SR_TRIGGER_ZERO:
	435	range_mask \|= (1 << match->channel->index);
	436	break;
	437	case SR_TRIGGER_ONE:
	438	range_mask \|= (1 << match->channel->index);
	439	range_value \|= (1 << match->channel->index);
	440	break;
	441	case SR_TRIGGER_RISING:
	442	if (cmd_pkt->trigger[0].flags.edge_type != H4032L_TRIGGER_EDGE_TYPE_DISABLED) {
	443	sr_err("only one trigger signal with fall/rising/edge allowed");
	444	return SR_ERR;
	445	}
	446	cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_RISE;
	447	cmd_pkt->trigger[0].flags.edge_signal = match->channel->index;
	448	break;
	449	case SR_TRIGGER_FALLING:
	450	if (cmd_pkt->trigger[0].flags.edge_type != H4032L_TRIGGER_EDGE_TYPE_DISABLED) {
	451	sr_err("only one trigger signal with fall/rising/edge allowed");
	452	return SR_ERR;
	453	}
	454	cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_FALL;
	455	cmd_pkt->trigger[0].flags.edge_signal = match->channel->index;
	456	break;
	457	case SR_TRIGGER_EDGE:
	458	if (cmd_pkt->trigger[0].flags.edge_type != H4032L_TRIGGER_EDGE_TYPE_DISABLED) {
	459	sr_err("only one trigger signal with fall/rising/edge allowed");
460	return SR_ERR;
461	}
462	cmd_pkt->trigger[0].flags.edge_type = H4032L_TRIGGER_EDGE_TYPE_TOGGLE;
463	cmd_pkt->trigger[0].flags.edge_signal = match->channel->index;
464	break;
465	default:
466	sr_err("unknown trigger value");
467	return SR_ERR;
468	}
469
470	channel = channel->next;
471	}
472
473	/* Compress range mask value and apply range settings. */
474	if (range_mask) {
475	cmd_pkt->trigger[0].flags.data_range_enabled = 1;
476	cmd_pkt->trigger[0].data_range_mask \|= (range_mask);
477
478	uint32_t new_range_value = 0;
479	uint32_t bit_mask = 1;
480	while (range_mask) {
481	if ((range_mask & 1) != 0) {
482	new_range_value <<= 1;
483	if ((range_value & 1) != 0)
484	new_range_value \|= bit_mask;
485	bit_mask <<= 1;
486	}
487	range_mask >>= 1;
488	range_value >>= 1;
489	}
490	cmd_pkt->trigger[0].data_range_max \|= range_value;
491	}
492	}
6a25fa42	493
5089a143 AZ	494	usb_source_add(sdi->session, drvc->sr_ctx, 10000,
5089a143 AZ	495	h4032l_receive_data, sdi->driver->context);
6a25fa42	496
5089a143 AZ	497	/* Start capturing. */
5089a143 AZ	498	return h4032l_start(sdi);
6a25fa42 AZ	499	}
6a25fa42 AZ	500
5089a143	501	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
6a25fa42	502	{
5089a143	503	(void)sdi;
6a25fa42 AZ	504
	505	/* TODO: stop acquisition. */
	506
	507	return SR_OK;
	508	}
	509
	510	SR_PRIV struct sr_dev_driver hantek_4032l_driver_info = {
	511	.name = "hantek-4032l",
5089a143	512	.longname = "Hantek 4032L",
6a25fa42	513	.api_version = 1,
5089a143 AZ	514	.init = std_init,
5089a143 AZ	515	.cleanup = std_cleanup,
6a25fa42	516	.scan = scan,
5089a143 AZ	517	.dev_list = std_dev_list,
5089a143 AZ	518	.dev_clear = std_dev_clear,
6a25fa42 AZ	519	.config_get = config_get,
	520	.config_set = config_set,
	521	.config_list = config_list,
	522	.dev_open = dev_open,
	523	.dev_close = dev_close,
	524	.dev_acquisition_start = dev_acquisition_start,
	525	.dev_acquisition_stop = dev_acquisition_stop,
	526	.context = NULL,
	527	};
5089a143	528	SR_REGISTER_DEV_DRIVER(hantek_4032l_driver_info);