[libsigrok.git] / src / hardware / zeroplus-logic-cube / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
 *
 * 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 VENDOR_NAME			"ZEROPLUS"
#define USB_INTERFACE			0
#define USB_CONFIGURATION		1
#define NUM_TRIGGER_STAGES		4
#define PACKET_SIZE			2048	/* ?? */

//#define ZP_EXPERIMENTAL

struct zp_model {
	uint16_t vid;
	uint16_t pid;
	const char *model_name;
	unsigned int channels;
	unsigned int sample_depth;	/* In Ksamples/channel */
	unsigned int max_sampling_freq;
};

/*
 * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
 * same 128K sample depth.
 */
static const struct zp_model zeroplus_models[] = {
	{0x0c12, 0x7002, "LAP-16128U",    16, 128,  200},
	{0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
	{0x0c12, 0x700a, "LAP-C(16128)",  16, 128,  200},
	{0x0c12, 0x700b, "LAP-C(32128)",  32, 128,  200},
	{0x0c12, 0x700c, "LAP-C(321000)", 32, 1024, 200},
	{0x0c12, 0x700d, "LAP-C(322000)", 32, 2048, 200},
	{0x0c12, 0x700e, "LAP-C(16032)",  16, 32,   100},
	{0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
	{0x0c12, 0x7100, "AKIP-9101", 16, 256, 200},
	ALL_ZERO
};

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

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

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

/*
 * ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7.
 * We currently ignore other untested/unsupported devices here.
 */
static const char *channel_names[] = {
	"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
	"B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
	"C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7",
	"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
};

/*
 * The hardware supports more samplerates than these, but these are the
 * options hardcoded into the vendor's Windows GUI.
 */

static const uint64_t samplerates_100[] = {
	SR_HZ(100),
	SR_HZ(500),
	SR_KHZ(1),
	SR_KHZ(5),
	SR_KHZ(25),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(200),
	SR_KHZ(400),
	SR_KHZ(800),
	SR_MHZ(1),
	SR_MHZ(10),
	SR_MHZ(25),
	SR_MHZ(50),
	SR_MHZ(80),
	SR_MHZ(100),
};

const uint64_t samplerates_200[] = {
	SR_HZ(100),
	SR_HZ(500),
	SR_KHZ(1),
	SR_KHZ(5),
	SR_KHZ(25),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(200),
	SR_KHZ(400),
	SR_KHZ(800),
	SR_MHZ(1),
	SR_MHZ(10),
	SR_MHZ(25),
	SR_MHZ(50),
	SR_MHZ(80),
	SR_MHZ(100),
	SR_MHZ(150),
	SR_MHZ(200),
};

SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
{
	int i;

	for (i = 0; ARRAY_SIZE(samplerates_200); i++)
		if (samplerate == samplerates_200[i])
			break;

	if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) {
		sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate);
		return SR_ERR_ARG;
	}

	sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);

	if (samplerate >= SR_MHZ(1))
		analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
	else if (samplerate >= SR_KHZ(1))
		analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
	else
		analyzer_set_freq(samplerate, FREQ_SCALE_HZ);

	devc->cur_samplerate = samplerate;

	return SR_OK;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	const struct zp_model *prof;
	struct libusb_device_descriptor des;
	struct libusb_device_handle *hdl;
	libusb_device **devlist;
	GSList *devices;
	int ret, i, j;
	char serial_num[64], connection_id[64];

	(void)options;

	drvc = di->context;

	devices = NULL;

	/* Find all ZEROPLUS analyzers and add them to device list. */
	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */

	for (i = 0; devlist[i]; i++) {
		libusb_get_device_descriptor(devlist[i], &des);

		if ((ret = libusb_open(devlist[i], &hdl)) < 0)
			continue;

		if (des.iSerialNumber == 0) {
			serial_num[0] = '\0';
		} else if ((ret = libusb_get_string_descriptor_ascii(hdl,
				des.iSerialNumber, (unsigned char *) serial_num,
				sizeof(serial_num))) < 0) {
			sr_warn("Failed to get serial number string descriptor: %s.",
				libusb_error_name(ret));
			continue;
		}

		libusb_close(hdl);

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

		prof = NULL;
		for (j = 0; j < zeroplus_models[j].vid; j++) {
			if (des.idVendor == zeroplus_models[j].vid &&
				des.idProduct == zeroplus_models[j].pid) {
				prof = &zeroplus_models[j];
			}
		}

		if (!prof)
			continue;
		sr_info("Found ZEROPLUS %s.", prof->model_name);

		sdi = g_malloc0(sizeof(struct sr_dev_inst));
		sdi->status = SR_ST_INACTIVE;
		sdi->vendor = g_strdup(VENDOR_NAME);
		sdi->model = g_strdup(prof->model_name);
		sdi->serial_num = g_strdup(serial_num);
		sdi->connection_id = g_strdup(connection_id);

		devc = g_malloc0(sizeof(struct dev_context));
		sdi->priv = devc;
		devc->prof = prof;
		devc->num_channels = prof->channels;
#ifdef ZP_EXPERIMENTAL
		devc->max_sample_depth = 128 * 1024;
		devc->max_samplerate = 200;
#else
		devc->max_sample_depth = prof->sample_depth * 1024;
		devc->max_samplerate = prof->max_sampling_freq;
#endif
		devc->max_samplerate *= SR_MHZ(1);
		devc->memory_size = MEMORY_SIZE_8K;
		// memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);

		for (j = 0; j < devc->num_channels; j++)
			sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
					channel_names[j]);

		devices = g_slist_append(devices, sdi);
		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);
	}
	libusb_free_device_list(devlist, 1);

	return std_scan_complete(di, devices);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di = sdi->driver;
	struct dev_context *devc;
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;
	int ret;

	drvc = di->context;
	usb = sdi->conn;
	devc = sdi->priv;

	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	if (ret != SR_OK)
		return ret;

	ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION);
	if (ret < 0) {
		sr_err("Unable to set USB configuration %d: %s.",
		       USB_CONFIGURATION, libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	if (ret != 0) {
		sr_err("Unable to claim interface: %s.",
		       libusb_error_name(ret));
		return SR_ERR;
	}

	/* Set default configuration after power on. */
	if (analyzer_read_status(usb->devhdl) == 0)
		analyzer_configure(usb->devhdl);

	analyzer_reset(usb->devhdl);
	analyzer_initialize(usb->devhdl);

	//analyzer_set_memory_size(MEMORY_SIZE_512K);
	// analyzer_set_freq(g_freq, g_freq_scale);
	analyzer_set_trigger_count(1);
	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	// * get_memory_size(g_memory_size)) / 100) >> 2);

#if 0
	if (g_double_mode == 1)
		analyzer_set_compression(COMPRESSION_DOUBLE);
	else if (g_compression == 1)
		analyzer_set_compression(COMPRESSION_ENABLE);
	else
#endif
	analyzer_set_compression(COMPRESSION_NONE);

	if (devc->cur_samplerate == 0) {
		/* Samplerate hasn't been set. Default to 1MHz. */
		analyzer_set_freq(1, FREQ_SCALE_MHZ);
		devc->cur_samplerate = SR_MHZ(1);
	}

	if (devc->cur_threshold == 0)
		set_voltage_threshold(devc, 1.5);

	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_reset_device(usb->devhdl);
	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;
	GVariant *range[2];

	(void)cg;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_samplerate);
		break;
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;
	case SR_CONF_VOLTAGE_THRESHOLD:
		range[0] = g_variant_new_double(devc->cur_threshold);
		range[1] = g_variant_new_double(devc->cur_threshold);
		*data = g_variant_new_tuple(range, 2);
		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;
	gdouble low, high;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		return zp_set_samplerate(devc, g_variant_get_uint64(data));
	case SR_CONF_LIMIT_SAMPLES:
		return set_limit_samples(devc, g_variant_get_uint64(data));
	case SR_CONF_CAPTURE_RATIO:
		return set_capture_ratio(devc, g_variant_get_uint64(data));
	case SR_CONF_VOLTAGE_THRESHOLD:
		g_variant_get(data, "(dd)", &low, &high);
		return set_voltage_threshold(devc, (low + high) / 2.0);
	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)
{
	struct dev_context *devc;
	GVariant *grange[2];

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		devc = sdi->priv;
		if (devc->prof->max_sampling_freq == 100)
			*data = std_gvar_samplerates(samplerates_100, ARRAY_SIZE(samplerates_100));
		else if (devc->prof->max_sampling_freq == 200)
			*data = std_gvar_samplerates(samplerates_200, ARRAY_SIZE(samplerates_200));
		else {
			sr_err("Internal error: Unknown max. samplerate: %d.",
			       devc->prof->max_sampling_freq);
			return SR_ERR_ARG;
		}
		break;
	case SR_CONF_TRIGGER_MATCH:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				trigger_matches, ARRAY_SIZE(trigger_matches),
				sizeof(int32_t));
		break;
	case SR_CONF_VOLTAGE_THRESHOLD:
		*data = std_gvar_min_max_step_thresholds(-6.0, 6.0, 0.1);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		if (!sdi)
			return SR_ERR_ARG;
		devc = sdi->priv;
		grange[0] = g_variant_new_uint64(0);
		grange[1] = g_variant_new_uint64(devc->max_sample_depth);
		*data = g_variant_new_tuple(grange, 2);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_logic logic;
	unsigned int samples_read;
	int res;
	unsigned int packet_num, n;
	unsigned char *buf;
	unsigned int status;
	unsigned int stop_address;
	unsigned int now_address;
	unsigned int trigger_address;
	unsigned int trigger_offset;
	unsigned int triggerbar;
	unsigned int ramsize_trigger;
	unsigned int memory_size;
	unsigned int valid_samples;
	unsigned int discard;
	int trigger_now;

	devc = sdi->priv;

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

	usb = sdi->conn;

	set_triggerbar(devc);

	/* Push configured settings to device. */
	analyzer_configure(usb->devhdl);

	analyzer_start(usb->devhdl);
	sr_info("Waiting for data.");
	analyzer_wait_data(usb->devhdl);

	status = analyzer_read_status(usb->devhdl);
	stop_address = analyzer_get_stop_address(usb->devhdl);
	now_address = analyzer_get_now_address(usb->devhdl);
	trigger_address = analyzer_get_trigger_address(usb->devhdl);

	triggerbar = analyzer_get_triggerbar_address();
	ramsize_trigger = analyzer_get_ramsize_trigger_address();

	n = get_memory_size(devc->memory_size);
	memory_size = n / 4;

	sr_info("Status = 0x%x.", status);
	sr_info("Stop address       = 0x%x.", stop_address);
	sr_info("Now address        = 0x%x.", now_address);
	sr_info("Trigger address    = 0x%x.", trigger_address);
	sr_info("Triggerbar address = 0x%x.", triggerbar);
	sr_info("Ramsize trigger    = 0x%x.", ramsize_trigger);
	sr_info("Memory size        = 0x%x.", memory_size);

	std_session_send_df_header(sdi);

	/* Check for empty capture */
	if ((status & STATUS_READY) && !stop_address) {
		std_session_send_df_end(sdi);
		return SR_OK;
	}

	buf = g_malloc(PACKET_SIZE);

	/* Check if the trigger is in the samples we are throwing away */
	trigger_now = now_address == trigger_address ||
		((now_address + 1) % memory_size) == trigger_address;

	/*
	 * STATUS_READY doesn't clear until now_address advances past
	 * addr 0, but for our logic, clear it in that case
	 */
	if (!now_address)
		status &= ~STATUS_READY;

	analyzer_read_start(usb->devhdl);

	/* Calculate how much data to discard */
	discard = 0;
	if (status & STATUS_READY) {
		/*
		 * We haven't wrapped around, we need to throw away data from
		 * our current position to the end of the buffer.
		 * Additionally, the first two samples captured are always
		 * bogus.
		 */
		discard += memory_size - now_address + 2;
		now_address = 2;
	}

	/* If we have more samples than we need, discard them */
	valid_samples = (stop_address - now_address) % memory_size;
	if (valid_samples > ramsize_trigger + triggerbar) {
		discard += valid_samples - (ramsize_trigger + triggerbar);
		now_address += valid_samples - (ramsize_trigger + triggerbar);
	}

	sr_info("Need to discard %d samples.", discard);

	/* Calculate how far in the trigger is */
	if (trigger_now)
		trigger_offset = 0;
	else
		trigger_offset = (trigger_address - now_address) % memory_size;

	/* Recalculate the number of samples available */
	valid_samples = (stop_address - now_address) % memory_size;

	/* Send the incoming transfer to the session bus. */
	samples_read = 0;
	for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
		unsigned int len;
		unsigned int buf_offset;

		res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE);
		sr_info("Tried to read %d bytes, actually read %d bytes.",
			PACKET_SIZE, res);

		if (discard >= PACKET_SIZE / 4) {
			discard -= PACKET_SIZE / 4;
			continue;
		}

		len = PACKET_SIZE - discard * 4;
		buf_offset = discard * 4;
		discard = 0;

		/* Check if we've read all the samples */
		if (samples_read + len / 4 >= valid_samples)
			len = (valid_samples - samples_read) * 4;
		if (!len)
			break;

		if (samples_read < trigger_offset &&
		    samples_read + len / 4 > trigger_offset) {
			/* Send out samples remaining before trigger */
			packet.type = SR_DF_LOGIC;
			packet.payload = &logic;
			logic.length = (trigger_offset - samples_read) * 4;
			logic.unitsize = 4;
			logic.data = buf + buf_offset;
			sr_session_send(sdi, &packet);
			len -= logic.length;
			samples_read += logic.length / 4;
			buf_offset += logic.length;
		}

		if (samples_read == trigger_offset) {
			/* Send out trigger */
			packet.type = SR_DF_TRIGGER;
			packet.payload = NULL;
			sr_session_send(sdi, &packet);
		}

		/* Send out data (or data after trigger) */
		packet.type = SR_DF_LOGIC;
		packet.payload = &logic;
		logic.length = len;
		logic.unitsize = 4;
		logic.data = buf + buf_offset;
		sr_session_send(sdi, &packet);
		samples_read += len / 4;
	}
	analyzer_read_stop(usb->devhdl);
	g_free(buf);

	std_session_send_df_end(sdi);

	return SR_OK;
}

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

	std_session_send_df_end(sdi);

	usb = sdi->conn;
	analyzer_reset(usb->devhdl);
	/* TODO: Need to cancel and free any queued up transfers. */

	return SR_OK;
}

static struct sr_dev_driver zeroplus_logic_cube_driver_info = {
	.name = "zeroplus-logic-cube",
	.longname = "ZEROPLUS Logic Cube LAP-C series",
	.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(zeroplus_logic_cube_driver_info);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
	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 3 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, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <config.h>
	21	#include "protocol.h"
	22
	23	#define VENDOR_NAME "ZEROPLUS"
	24	#define USB_INTERFACE 0
	25	#define USB_CONFIGURATION 1
	26	#define NUM_TRIGGER_STAGES 4
	27	#define PACKET_SIZE 2048 /* ?? */
	28
	29	//#define ZP_EXPERIMENTAL
	30
	31	struct zp_model {
	32	uint16_t vid;
	33	uint16_t pid;
	34	const char *model_name;
	35	unsigned int channels;
	36	unsigned int sample_depth; /* In Ksamples/channel */
	37	unsigned int max_sampling_freq;
	38	};
	39
	40	/*
	41	* Note -- 16032, 16064 and 16128 usually -- but not always -- have the
	42	* same 128K sample depth.
	43	*/
	44	static const struct zp_model zeroplus_models[] = {
	45	{0x0c12, 0x7002, "LAP-16128U", 16, 128, 200},
	46	{0x0c12, 0x7009, "LAP-C(16064)", 16, 64, 100},
	47	{0x0c12, 0x700a, "LAP-C(16128)", 16, 128, 200},
	48	{0x0c12, 0x700b, "LAP-C(32128)", 32, 128, 200},
	49	{0x0c12, 0x700c, "LAP-C(321000)", 32, 1024, 200},
	50	{0x0c12, 0x700d, "LAP-C(322000)", 32, 2048, 200},
	51	{0x0c12, 0x700e, "LAP-C(16032)", 16, 32, 100},
	52	{0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
	53	{0x0c12, 0x7100, "AKIP-9101", 16, 256, 200},
	54	ALL_ZERO
	55	};
	56
	57	static const uint32_t drvopts[] = {
	58	SR_CONF_LOGIC_ANALYZER,
	59	};
	60
	61	static const uint32_t devopts[] = {
	62	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET \| SR_CONF_LIST,
	63	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	64	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	65	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
	66	SR_CONF_VOLTAGE_THRESHOLD \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	67	};
	68
	69	static const int32_t trigger_matches[] = {
	70	SR_TRIGGER_ZERO,
	71	SR_TRIGGER_ONE,
	72	};
	73
	74	/*
	75	* ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7.
	76	* We currently ignore other untested/unsupported devices here.
	77	*/
	78	static const char *channel_names[] = {
	79	"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
	80	"B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
	81	"C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7",
	82	"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
	83	};
	84
	85	/*
	86	* The hardware supports more samplerates than these, but these are the
	87	* options hardcoded into the vendor's Windows GUI.
	88	*/
	89
	90	static const uint64_t samplerates_100[] = {
	91	SR_HZ(100),
	92	SR_HZ(500),
	93	SR_KHZ(1),
	94	SR_KHZ(5),
	95	SR_KHZ(25),
	96	SR_KHZ(50),
	97	SR_KHZ(100),
	98	SR_KHZ(200),
	99	SR_KHZ(400),
	100	SR_KHZ(800),
	101	SR_MHZ(1),
	102	SR_MHZ(10),
	103	SR_MHZ(25),
	104	SR_MHZ(50),
	105	SR_MHZ(80),
	106	SR_MHZ(100),
	107	};
	108
	109	const uint64_t samplerates_200[] = {
	110	SR_HZ(100),
	111	SR_HZ(500),
	112	SR_KHZ(1),
	113	SR_KHZ(5),
	114	SR_KHZ(25),
	115	SR_KHZ(50),
	116	SR_KHZ(100),
	117	SR_KHZ(200),
	118	SR_KHZ(400),
	119	SR_KHZ(800),
	120	SR_MHZ(1),
	121	SR_MHZ(10),
	122	SR_MHZ(25),
	123	SR_MHZ(50),
	124	SR_MHZ(80),
	125	SR_MHZ(100),
	126	SR_MHZ(150),
	127	SR_MHZ(200),
	128	};
	129
	130	SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
	131	{
	132	int i;
	133
	134	for (i = 0; ARRAY_SIZE(samplerates_200); i++)
	135	if (samplerate == samplerates_200[i])
	136	break;
	137
	138	if (i == ARRAY_SIZE(samplerates_200) \|\| samplerate > devc->max_samplerate) {
	139	sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate);
	140	return SR_ERR_ARG;
	141	}
	142
	143	sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);
	144
	145	if (samplerate >= SR_MHZ(1))
	146	analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
	147	else if (samplerate >= SR_KHZ(1))
	148	analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
	149	else
	150	analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
	151
	152	devc->cur_samplerate = samplerate;
	153
	154	return SR_OK;
	155	}
	156
	157	static GSList scan(struct sr_dev_driver di, GSList *options)
	158	{
	159	struct sr_dev_inst *sdi;
	160	struct drv_context *drvc;
	161	struct dev_context *devc;
	162	const struct zp_model *prof;
	163	struct libusb_device_descriptor des;
	164	struct libusb_device_handle *hdl;
	165	libusb_device **devlist;
	166	GSList *devices;
	167	int ret, i, j;
	168	char serial_num[64], connection_id[64];
	169
	170	(void)options;
	171
	172	drvc = di->context;
	173
	174	devices = NULL;
	175
	176	/* Find all ZEROPLUS analyzers and add them to device list. */
	177	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
	178
	179	for (i = 0; devlist[i]; i++) {
	180	libusb_get_device_descriptor(devlist[i], &des);
	181
	182	if ((ret = libusb_open(devlist[i], &hdl)) < 0)
	183	continue;
	184
	185	if (des.iSerialNumber == 0) {
	186	serial_num[0] = '\0';
	187	} else if ((ret = libusb_get_string_descriptor_ascii(hdl,
	188	des.iSerialNumber, (unsigned char *) serial_num,
	189	sizeof(serial_num))) < 0) {
	190	sr_warn("Failed to get serial number string descriptor: %s.",
	191	libusb_error_name(ret));
	192	continue;
	193	}
	194
	195	libusb_close(hdl);
	196
	197	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	198
	199	prof = NULL;
	200	for (j = 0; j < zeroplus_models[j].vid; j++) {
	201	if (des.idVendor == zeroplus_models[j].vid &&
	202	des.idProduct == zeroplus_models[j].pid) {
	203	prof = &zeroplus_models[j];
	204	}
	205	}
	206
	207	if (!prof)
	208	continue;
	209	sr_info("Found ZEROPLUS %s.", prof->model_name);
	210
	211	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	212	sdi->status = SR_ST_INACTIVE;
	213	sdi->vendor = g_strdup(VENDOR_NAME);
	214	sdi->model = g_strdup(prof->model_name);
	215	sdi->serial_num = g_strdup(serial_num);
	216	sdi->connection_id = g_strdup(connection_id);
	217
	218	devc = g_malloc0(sizeof(struct dev_context));
	219	sdi->priv = devc;
	220	devc->prof = prof;
	221	devc->num_channels = prof->channels;
	222	#ifdef ZP_EXPERIMENTAL
	223	devc->max_sample_depth = 128 * 1024;
	224	devc->max_samplerate = 200;
	225	#else
	226	devc->max_sample_depth = prof->sample_depth * 1024;
	227	devc->max_samplerate = prof->max_sampling_freq;
	228	#endif
	229	devc->max_samplerate *= SR_MHZ(1);
	230	devc->memory_size = MEMORY_SIZE_8K;
	231	// memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
	232
	233	for (j = 0; j < devc->num_channels; j++)
	234	sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
	235	channel_names[j]);
	236
	237	devices = g_slist_append(devices, sdi);
	238	sdi->inst_type = SR_INST_USB;
	239	sdi->conn = sr_usb_dev_inst_new(
	240	libusb_get_bus_number(devlist[i]),
	241	libusb_get_device_address(devlist[i]), NULL);
	242	}
	243	libusb_free_device_list(devlist, 1);
	244
	245	return std_scan_complete(di, devices);
	246	}
	247
	248	static int dev_open(struct sr_dev_inst *sdi)
	249	{
	250	struct sr_dev_driver *di = sdi->driver;
	251	struct dev_context *devc;
	252	struct drv_context *drvc;
	253	struct sr_usb_dev_inst *usb;
	254	int ret;
	255
	256	drvc = di->context;
	257	usb = sdi->conn;
	258	devc = sdi->priv;
	259
	260	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	261	if (ret != SR_OK)
	262	return ret;
	263
	264	ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION);
	265	if (ret < 0) {
	266	sr_err("Unable to set USB configuration %d: %s.",
	267	USB_CONFIGURATION, libusb_error_name(ret));
	268	return SR_ERR;
	269	}
	270
	271	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	272	if (ret != 0) {
	273	sr_err("Unable to claim interface: %s.",
	274	libusb_error_name(ret));
	275	return SR_ERR;
	276	}
	277
	278	/* Set default configuration after power on. */
	279	if (analyzer_read_status(usb->devhdl) == 0)
	280	analyzer_configure(usb->devhdl);
	281
	282	analyzer_reset(usb->devhdl);
	283	analyzer_initialize(usb->devhdl);
	284
	285	//analyzer_set_memory_size(MEMORY_SIZE_512K);
	286	// analyzer_set_freq(g_freq, g_freq_scale);
	287	analyzer_set_trigger_count(1);
	288	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	289	// * get_memory_size(g_memory_size)) / 100) >> 2);
	290
	291	#if 0
	292	if (g_double_mode == 1)
	293	analyzer_set_compression(COMPRESSION_DOUBLE);
	294	else if (g_compression == 1)
	295	analyzer_set_compression(COMPRESSION_ENABLE);
	296	else
	297	#endif
	298	analyzer_set_compression(COMPRESSION_NONE);
	299
	300	if (devc->cur_samplerate == 0) {
	301	/* Samplerate hasn't been set. Default to 1MHz. */
	302	analyzer_set_freq(1, FREQ_SCALE_MHZ);
	303	devc->cur_samplerate = SR_MHZ(1);
	304	}
	305
	306	if (devc->cur_threshold == 0)
	307	set_voltage_threshold(devc, 1.5);
	308
	309	return SR_OK;
	310	}
	311
	312	static int dev_close(struct sr_dev_inst *sdi)
	313	{
	314	struct sr_usb_dev_inst *usb;
	315
	316	usb = sdi->conn;
	317
	318	if (!usb->devhdl)
	319	return SR_ERR_BUG;
	320
	321	sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
	322	usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
	323	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	324	libusb_reset_device(usb->devhdl);
	325	libusb_close(usb->devhdl);
	326	usb->devhdl = NULL;
	327
	328	return SR_OK;
	329	}
	330
	331	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	332	const struct sr_channel_group *cg)
	333	{
	334	struct dev_context *devc;
	335	GVariant *range[2];
	336
	337	(void)cg;
	338
	339	if (!sdi)
	340	return SR_ERR_ARG;
	341
	342	devc = sdi->priv;
	343
	344	switch (key) {
	345	case SR_CONF_SAMPLERATE:
	346	*data = g_variant_new_uint64(devc->cur_samplerate);
	347	break;
	348	case SR_CONF_CAPTURE_RATIO:
	349	*data = g_variant_new_uint64(devc->capture_ratio);
	350	break;
	351	case SR_CONF_VOLTAGE_THRESHOLD:
	352	range[0] = g_variant_new_double(devc->cur_threshold);
	353	range[1] = g_variant_new_double(devc->cur_threshold);
	354	*data = g_variant_new_tuple(range, 2);
	355	break;
	356	default:
	357	return SR_ERR_NA;
	358	}
	359
	360	return SR_OK;
	361	}
	362
	363	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	364	const struct sr_channel_group *cg)
	365	{
	366	struct dev_context *devc;
	367	gdouble low, high;
	368
	369	(void)cg;
	370
	371	devc = sdi->priv;
	372
	373	switch (key) {
	374	case SR_CONF_SAMPLERATE:
	375	return zp_set_samplerate(devc, g_variant_get_uint64(data));
	376	case SR_CONF_LIMIT_SAMPLES:
	377	return set_limit_samples(devc, g_variant_get_uint64(data));
	378	case SR_CONF_CAPTURE_RATIO:
	379	return set_capture_ratio(devc, g_variant_get_uint64(data));
	380	case SR_CONF_VOLTAGE_THRESHOLD:
	381	g_variant_get(data, "(dd)", &low, &high);
	382	return set_voltage_threshold(devc, (low + high) / 2.0);
	383	default:
	384	return SR_ERR_NA;
	385	}
	386
	387	return SR_OK;
	388	}
	389
	390	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	391	const struct sr_channel_group *cg)
	392	{
	393	struct dev_context *devc;
	394	GVariant *grange[2];
	395
	396	switch (key) {
	397	case SR_CONF_DEVICE_OPTIONS:
	398	return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	399	case SR_CONF_SAMPLERATE:
	400	devc = sdi->priv;
	401	if (devc->prof->max_sampling_freq == 100)
	402	*data = std_gvar_samplerates(samplerates_100, ARRAY_SIZE(samplerates_100));
	403	else if (devc->prof->max_sampling_freq == 200)
	404	*data = std_gvar_samplerates(samplerates_200, ARRAY_SIZE(samplerates_200));
	405	else {
	406	sr_err("Internal error: Unknown max. samplerate: %d.",
	407	devc->prof->max_sampling_freq);
	408	return SR_ERR_ARG;
	409	}
	410	break;
	411	case SR_CONF_TRIGGER_MATCH:
	412	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	413	trigger_matches, ARRAY_SIZE(trigger_matches),
	414	sizeof(int32_t));
	415	break;
	416	case SR_CONF_VOLTAGE_THRESHOLD:
	417	*data = std_gvar_min_max_step_thresholds(-6.0, 6.0, 0.1);
	418	break;
	419	case SR_CONF_LIMIT_SAMPLES:
	420	if (!sdi)
	421	return SR_ERR_ARG;
	422	devc = sdi->priv;
	423	grange[0] = g_variant_new_uint64(0);
	424	grange[1] = g_variant_new_uint64(devc->max_sample_depth);
	425	*data = g_variant_new_tuple(grange, 2);
	426	break;
	427	default:
	428	return SR_ERR_NA;
	429	}
	430
	431	return SR_OK;
	432	}
	433
	434	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	435	{
	436	struct dev_context *devc;
	437	struct sr_usb_dev_inst *usb;
	438	struct sr_datafeed_packet packet;
	439	struct sr_datafeed_logic logic;
	440	unsigned int samples_read;
	441	int res;
	442	unsigned int packet_num, n;
	443	unsigned char *buf;
	444	unsigned int status;
	445	unsigned int stop_address;
	446	unsigned int now_address;
	447	unsigned int trigger_address;
	448	unsigned int trigger_offset;
	449	unsigned int triggerbar;
	450	unsigned int ramsize_trigger;
	451	unsigned int memory_size;
	452	unsigned int valid_samples;
	453	unsigned int discard;
	454	int trigger_now;
	455
	456	devc = sdi->priv;
	457
	458	if (analyzer_add_triggers(sdi) != SR_OK) {
	459	sr_err("Failed to configure triggers.");
	460	return SR_ERR;
	461	}
	462
	463	usb = sdi->conn;
	464
	465	set_triggerbar(devc);
	466
	467	/* Push configured settings to device. */
	468	analyzer_configure(usb->devhdl);
	469
	470	analyzer_start(usb->devhdl);
	471	sr_info("Waiting for data.");
	472	analyzer_wait_data(usb->devhdl);
	473
	474	status = analyzer_read_status(usb->devhdl);
	475	stop_address = analyzer_get_stop_address(usb->devhdl);
	476	now_address = analyzer_get_now_address(usb->devhdl);
	477	trigger_address = analyzer_get_trigger_address(usb->devhdl);
	478
	479	triggerbar = analyzer_get_triggerbar_address();
	480	ramsize_trigger = analyzer_get_ramsize_trigger_address();
	481
	482	n = get_memory_size(devc->memory_size);
	483	memory_size = n / 4;
	484
	485	sr_info("Status = 0x%x.", status);
	486	sr_info("Stop address = 0x%x.", stop_address);
	487	sr_info("Now address = 0x%x.", now_address);
	488	sr_info("Trigger address = 0x%x.", trigger_address);
	489	sr_info("Triggerbar address = 0x%x.", triggerbar);
	490	sr_info("Ramsize trigger = 0x%x.", ramsize_trigger);
	491	sr_info("Memory size = 0x%x.", memory_size);
	492
	493	std_session_send_df_header(sdi);
	494
	495	/* Check for empty capture */
	496	if ((status & STATUS_READY) && !stop_address) {
	497	std_session_send_df_end(sdi);
	498	return SR_OK;
	499	}
	500
	501	buf = g_malloc(PACKET_SIZE);
	502
	503	/* Check if the trigger is in the samples we are throwing away */
	504	trigger_now = now_address == trigger_address \|\|
	505	((now_address + 1) % memory_size) == trigger_address;
	506
	507	/*
	508	* STATUS_READY doesn't clear until now_address advances past
	509	* addr 0, but for our logic, clear it in that case
	510	*/
	511	if (!now_address)
	512	status &= ~STATUS_READY;
	513
	514	analyzer_read_start(usb->devhdl);
	515
	516	/* Calculate how much data to discard */
	517	discard = 0;
	518	if (status & STATUS_READY) {
	519	/*
	520	* We haven't wrapped around, we need to throw away data from
	521	* our current position to the end of the buffer.
	522	* Additionally, the first two samples captured are always
	523	* bogus.
	524	*/
	525	discard += memory_size - now_address + 2;
	526	now_address = 2;
	527	}
	528
	529	/* If we have more samples than we need, discard them */
	530	valid_samples = (stop_address - now_address) % memory_size;
	531	if (valid_samples > ramsize_trigger + triggerbar) {
	532	discard += valid_samples - (ramsize_trigger + triggerbar);
	533	now_address += valid_samples - (ramsize_trigger + triggerbar);
	534	}
	535
	536	sr_info("Need to discard %d samples.", discard);
	537
	538	/* Calculate how far in the trigger is */
	539	if (trigger_now)
	540	trigger_offset = 0;
	541	else
	542	trigger_offset = (trigger_address - now_address) % memory_size;
	543
	544	/* Recalculate the number of samples available */
	545	valid_samples = (stop_address - now_address) % memory_size;
	546
	547	/* Send the incoming transfer to the session bus. */
	548	samples_read = 0;
	549	for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
	550	unsigned int len;
	551	unsigned int buf_offset;
	552
	553	res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE);
	554	sr_info("Tried to read %d bytes, actually read %d bytes.",
	555	PACKET_SIZE, res);
	556
	557	if (discard >= PACKET_SIZE / 4) {
	558	discard -= PACKET_SIZE / 4;
	559	continue;
	560	}
	561
	562	len = PACKET_SIZE - discard * 4;
	563	buf_offset = discard * 4;
	564	discard = 0;
	565
	566	/* Check if we've read all the samples */
	567	if (samples_read + len / 4 >= valid_samples)
	568	len = (valid_samples - samples_read) * 4;
	569	if (!len)
	570	break;
	571
	572	if (samples_read < trigger_offset &&
	573	samples_read + len / 4 > trigger_offset) {
	574	/* Send out samples remaining before trigger */
	575	packet.type = SR_DF_LOGIC;
	576	packet.payload = &logic;
	577	logic.length = (trigger_offset - samples_read) * 4;
	578	logic.unitsize = 4;
	579	logic.data = buf + buf_offset;
	580	sr_session_send(sdi, &packet);
	581	len -= logic.length;
	582	samples_read += logic.length / 4;
	583	buf_offset += logic.length;
	584	}
	585
	586	if (samples_read == trigger_offset) {
	587	/* Send out trigger */
	588	packet.type = SR_DF_TRIGGER;
	589	packet.payload = NULL;
	590	sr_session_send(sdi, &packet);
	591	}
	592
	593	/* Send out data (or data after trigger) */
	594	packet.type = SR_DF_LOGIC;
	595	packet.payload = &logic;
	596	logic.length = len;
	597	logic.unitsize = 4;
	598	logic.data = buf + buf_offset;
	599	sr_session_send(sdi, &packet);
	600	samples_read += len / 4;
	601	}
	602	analyzer_read_stop(usb->devhdl);
	603	g_free(buf);
	604
	605	std_session_send_df_end(sdi);
	606
	607	return SR_OK;
	608	}
	609
	610	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	611	{
	612	struct sr_usb_dev_inst *usb;
	613
	614	std_session_send_df_end(sdi);
	615
	616	usb = sdi->conn;
	617	analyzer_reset(usb->devhdl);
	618	/* TODO: Need to cancel and free any queued up transfers. */
	619
	620	return SR_OK;
	621	}
	622
	623	static struct sr_dev_driver zeroplus_logic_cube_driver_info = {
	624	.name = "zeroplus-logic-cube",
	625	.longname = "ZEROPLUS Logic Cube LAP-C series",
	626	.api_version = 1,
	627	.init = std_init,
	628	.cleanup = std_cleanup,
	629	.scan = scan,
	630	.dev_list = std_dev_list,
	631	.dev_clear = std_dev_clear,
	632	.config_get = config_get,
	633	.config_set = config_set,
	634	.config_list = config_list,
	635	.dev_open = dev_open,
	636	.dev_close = dev_close,
	637	.dev_acquisition_start = dev_acquisition_start,
	638	.dev_acquisition_stop = dev_acquisition_stop,
	639	.context = NULL,
	640	};
	641	SR_REGISTER_DEV_DRIVER(zeroplus_logic_cube_driver_info);