[libsigrok.git] / src / hardware / kecheng-kc-330b / protocol.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 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 <string.h>
#include "protocol.h"

extern struct sr_dev_driver kecheng_kc_330b_driver_info;
extern const uint64_t kecheng_kc_330b_sample_intervals[][2];

SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data)
{
	struct sr_dev_driver *di;
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_usb_dev_inst *usb;
	struct timeval tv;
	const uint64_t *intv_entry;
	gint64 now, interval;
	int offset, len, ret;
	unsigned char buf[4];

	(void)fd;
	(void)revents;

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

	memset(&tv, 0, sizeof(struct timeval));
	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
					       NULL);

	if (sdi->status == SR_ST_STOPPING) {
		libusb_free_transfer(devc->xfer);
		usb_source_remove(sdi->session, drvc->sr_ctx);
		std_session_send_df_end(sdi, LOG_PREFIX);
		sdi->status = SR_ST_ACTIVE;
		return TRUE;
	}

	if (devc->state == LIVE_SPL_IDLE) {
		/* Request samples at the interval rate. */
		now = g_get_monotonic_time() / 1000;
		intv_entry = kecheng_kc_330b_sample_intervals[devc->sample_interval];
		interval = intv_entry[0] * 1000 / intv_entry[1];
		if (now - devc->last_live_request > interval) {
			buf[0] = CMD_GET_LIVE_SPL;
			ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
			if (ret != 0 || len != 1) {
				sr_dbg("Failed to request new acquisition: %s",
						libusb_error_name(ret));
				sdi->driver->dev_acquisition_stop(sdi);
				return TRUE;
			}
			libusb_submit_transfer(devc->xfer);
			devc->last_live_request = now;
			devc->state = LIVE_SPL_WAIT;
		}
	} else if (devc->state == LIVE_SPL_IDLE) {
		buf[0] = CMD_GET_LOG_DATA;
		offset = devc->num_samples / 63;
		buf[1] = (offset >> 8) & 0xff;
		buf[2] = offset & 0xff;
		if (devc->stored_samples - devc->num_samples > 63)
			buf[3] = 63;
		else
			/* Last chunk. */
			buf[3] = devc->stored_samples - devc->num_samples;
		ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 4, &len, 5);
		if (ret != 0 || len != 4) {
			sr_dbg("Failed to request next chunk: %s",
					libusb_error_name(ret));
			sdi->driver->dev_acquisition_stop(sdi);
			return TRUE;
		}
		libusb_submit_transfer(devc->xfer);
		devc->state = LIVE_SPL_WAIT;
	}

	return TRUE;
}

static void send_data(const struct sr_dev_inst *sdi, void *buf, unsigned int buf_len)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog_old analog;

	devc = sdi->priv;

	memset(&analog, 0, sizeof(struct sr_datafeed_analog_old));
	analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
	analog.mqflags = devc->mqflags;
	analog.unit = SR_UNIT_DECIBEL_SPL;
	analog.channels = sdi->channels;
	analog.num_samples = buf_len;
	analog.data = buf;
	packet.type = SR_DF_ANALOG_OLD;
	packet.payload = &analog;
	sr_session_send(sdi, &packet);
}

SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
{
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	float fvalue[64];
	int packet_has_error, num_samples, i;

	sdi = transfer->user_data;
	devc = sdi->priv;

	packet_has_error = FALSE;
	switch (transfer->status) {
	case LIBUSB_TRANSFER_NO_DEVICE:
		/* USB device was unplugged. */
		sdi->driver->dev_acquisition_stop(sdi);
		return;
	case LIBUSB_TRANSFER_COMPLETED:
	case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
		break;
	default:
		packet_has_error = TRUE;
		break;
	}

	if (packet_has_error)
		return;

	if (devc->state == LIVE_SPL_WAIT) {
		if (transfer->actual_length != 3 || transfer->buffer[0] != 0x88) {
			sr_dbg("Received invalid SPL packet.");
		} else {
			fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
			send_data(sdi, fvalue, 1);
			devc->num_samples++;
			if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
				sdi->driver->dev_acquisition_stop(sdi);
			} else {
				/* let USB event handler fire off another
				 * request when the time is right. */
				devc->state = LIVE_SPL_IDLE;
			}
		}
	} else if (devc->state == LOG_DATA_WAIT) {
		if (transfer->actual_length < 1 || !(transfer->actual_length & 0x01)) {
			sr_dbg("Received invalid stored SPL packet.");
		} else {
			num_samples = (transfer->actual_length - 1) / 2;
			for (i = 0; i < num_samples; i++) {
				fvalue[i] = transfer->buffer[1 + i * 2] << 8;
				fvalue[i] += transfer->buffer[1 + i * 2 + 1];
				fvalue[i] /= 10.0;
			}
			send_data(sdi, fvalue, 1);
			devc->num_samples += num_samples;
			if (devc->num_samples >= devc->stored_samples) {
				sdi->driver->dev_acquisition_stop(sdi);
			} else {
				/* let USB event handler fire off another
				 * request when the time is right. */
				devc->state = LOG_DATA_IDLE;
			}
		}
	}

}

SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	int len, ret;
	unsigned char buf[7];

	sr_dbg("Configuring device.");

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

	buf[0] = CMD_CONFIGURE;
	buf[1] = devc->sample_interval;
	buf[2] = devc->alarm_low;
	buf[3] = devc->alarm_high;
	buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1;
	buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1;
	buf[6] = devc->data_source;
	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
	if (ret != 0 || len != 7) {
		sr_dbg("Failed to configure device: %s", libusb_error_name(ret));
		return SR_ERR;
	}

	/* The configure command ack takes about 32ms to come in. */
	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40);
	if (ret != 0 || len != 1) {
		sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret));
		return SR_ERR;
	}
	if (buf[0] != (CMD_CONFIGURE | 0x80)) {
		sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
		return SR_ERR;
	}

	devc->config_dirty = FALSE;

	return SR_OK;
}

SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
{
	struct sr_usb_dev_inst *usb;
	GDateTime *dt;
	int len, ret;
	unsigned char buf[7];

	sr_dbg("Setting device date/time.");

	usb = sdi->conn;

	dt = g_date_time_new_now_local();
	buf[0] = CMD_SET_DATE_TIME;
	buf[1] = g_date_time_get_year(dt) - 2000;
	buf[2] = g_date_time_get_month(dt);
	buf[3] = g_date_time_get_day_of_month(dt);
	buf[4] = g_date_time_get_hour(dt);
	buf[5] = g_date_time_get_minute(dt);
	buf[6] = g_date_time_get_second(dt);
	g_date_time_unref(dt);
	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
	if (ret != 0 || len != 7) {
		sr_dbg("Failed to set date/time: %s", libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 10);
	if (ret != 0 || len != 1) {
		sr_dbg("Failed to set date/time (no ack): %s", libusb_error_name(ret));
		return SR_ERR;
	}
	if (buf[0] != (CMD_SET_DATE_TIME | 0x80)) {
		sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
		return SR_ERR;
	}

	return SR_OK;
}

SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
		int *status)
{
	struct sr_usb_dev_inst *usb;
	int len, ret;
	unsigned char buf;

	sr_dbg("Getting device status.");

	usb = sdi->conn;
	buf = CMD_GET_STATUS;
	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5);
	if (ret != 0 || len != 1) {
		sr_dbg("Failed to get status: %s", libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10);
	if (ret != 0 || len != 1) {
		sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
		return SR_ERR;
	}
	/* Need either 0x84 or 0xa4. */
	if (buf != (CMD_GET_STATUS | 0x80) && buf != (CMD_GET_STATUS | 0xa0)) {
		sr_dbg("Failed to get status: invalid response 0x%2.x", buf);
		return SR_ERR;
	}

	if (buf & 0x20)
		*status = DEVICE_INACTIVE;
	else
		*status = DEVICE_ACTIVE;

	return SR_OK;
}

SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
		unsigned char *buf)
{
	struct sr_usb_dev_inst *usb;
	int len, ret;

	sr_dbg("Getting logging info.");

	usb = sdi->conn;
	buf[0] = CMD_GET_LOG_INFO;
	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
	if (ret != 0 || len != 1) {
		sr_dbg("Failed to get status: %s", libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10);
	if (ret != 0 || len != 9) {
		sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
		return SR_ERR;
	}
	if (buf[0] != (CMD_GET_LOG_INFO | 0x80) || buf[1] > 6) {
		sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]);
		return SR_ERR;
	}

	return SR_OK;
}
Commit	Line	Data
ed759a08 BV	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 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
6ec6c43b	20	#include <config.h>
df035528	21	#include <string.h>
ed759a08 BV	22	#include "protocol.h"
ed759a08 BV	23
df035528	24	extern struct sr_dev_driver kecheng_kc_330b_driver_info;
df035528 BV	25	extern const uint64_t kecheng_kc_330b_sample_intervals[][2];
df035528 BV	26
bc7be4a9	27	SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data)
ed759a08	28	{
4f840ce9	29	struct sr_dev_driver *di;
df035528	30	struct drv_context *drvc;
bc7be4a9	31	struct dev_context *devc;
df035528 BV	32	struct sr_dev_inst *sdi;
df035528 BV	33	struct sr_usb_dev_inst *usb;
bc7be4a9	34	struct timeval tv;
df035528 BV	35	const uint64_t *intv_entry;
df035528 BV	36	gint64 now, interval;
6c60facc	37	int offset, len, ret;
85ed4ab3	38	unsigned char buf[4];
bc7be4a9	39
ed759a08	40	(void)fd;
bc7be4a9	41	(void)revents;
ed759a08	42
bc7be4a9 BV	43	sdi = cb_data;
bc7be4a9 BV	44	devc = sdi->priv;
df035528	45	usb = sdi->conn;
4f840ce9	46	di = sdi->driver;
41812aca	47	drvc = di->context;
bc7be4a9	48
df035528 BV	49	memset(&tv, 0, sizeof(struct timeval));
	50	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
	51	NULL);
	52
	53	if (sdi->status == SR_ST_STOPPING) {
	54	libusb_free_transfer(devc->xfer);
102f1239	55	usb_source_remove(sdi->session, drvc->sr_ctx);
695dc859	56	std_session_send_df_end(sdi, LOG_PREFIX);
df035528 BV	57	sdi->status = SR_ST_ACTIVE;
	58	return TRUE;
	59	}
	60
	61	if (devc->state == LIVE_SPL_IDLE) {
85ed4ab3	62	/* Request samples at the interval rate. */
df035528 BV	63	now = g_get_monotonic_time() / 1000;
	64	intv_entry = kecheng_kc_330b_sample_intervals[devc->sample_interval];
	65	interval = intv_entry[0] * 1000 / intv_entry[1];
	66	if (now - devc->last_live_request > interval) {
85ed4ab3 BV	67	buf[0] = CMD_GET_LIVE_SPL;
85ed4ab3 BV	68	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
df035528 BV	69	if (ret != 0 \|\| len != 1) {
	70	sr_dbg("Failed to request new acquisition: %s",
	71	libusb_error_name(ret));
695dc859	72	sdi->driver->dev_acquisition_stop(sdi);
df035528 BV	73	return TRUE;
	74	}
	75	libusb_submit_transfer(devc->xfer);
	76	devc->last_live_request = now;
	77	devc->state = LIVE_SPL_WAIT;
	78	}
85ed4ab3 BV	79	} else if (devc->state == LIVE_SPL_IDLE) {
	80	buf[0] = CMD_GET_LOG_DATA;
	81	offset = devc->num_samples / 63;
	82	buf[1] = (offset >> 8) & 0xff;
	83	buf[2] = offset & 0xff;
	84	if (devc->stored_samples - devc->num_samples > 63)
	85	buf[3] = 63;
	86	else
	87	/* Last chunk. */
	88	buf[3] = devc->stored_samples - devc->num_samples;
	89	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 4, &len, 5);
	90	if (ret != 0 \|\| len != 4) {
	91	sr_dbg("Failed to request next chunk: %s",
	92	libusb_error_name(ret));
695dc859	93	sdi->driver->dev_acquisition_stop(sdi);
85ed4ab3 BV	94	return TRUE;
	95	}
	96	libusb_submit_transfer(devc->xfer);
	97	devc->state = LIVE_SPL_WAIT;
df035528	98	}
bc7be4a9 BV	99
	100	return TRUE;
	101	}
	102
df035528 BV	103	static void send_data(const struct sr_dev_inst sdi, void buf, unsigned int buf_len)
	104	{
	105	struct dev_context *devc;
	106	struct sr_datafeed_packet packet;
5faebab2	107	struct sr_datafeed_analog_old analog;
df035528 BV	108
	109	devc = sdi->priv;
	110
5faebab2	111	memset(&analog, 0, sizeof(struct sr_datafeed_analog_old));
df035528 BV	112	analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
	113	analog.mqflags = devc->mqflags;
	114	analog.unit = SR_UNIT_DECIBEL_SPL;
ba7dd8bb	115	analog.channels = sdi->channels;
df035528 BV	116	analog.num_samples = buf_len;
df035528 BV	117	analog.data = buf;
5faebab2	118	packet.type = SR_DF_ANALOG_OLD;
df035528	119	packet.payload = &analog;
695dc859	120	sr_session_send(sdi, &packet);
df035528 BV	121	}
df035528 BV	122
55462b8b	123	SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
df035528 BV	124	{
	125	struct dev_context *devc;
	126	struct sr_dev_inst *sdi;
85ed4ab3 BV	127	float fvalue[64];
85ed4ab3 BV	128	int packet_has_error, num_samples, i;
df035528 BV	129
	130	sdi = transfer->user_data;
	131	devc = sdi->priv;
	132
	133	packet_has_error = FALSE;
	134	switch (transfer->status) {
	135	case LIBUSB_TRANSFER_NO_DEVICE:
	136	/* USB device was unplugged. */
695dc859	137	sdi->driver->dev_acquisition_stop(sdi);
df035528 BV	138	return;
	139	case LIBUSB_TRANSFER_COMPLETED:
	140	case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
	141	break;
	142	default:
	143	packet_has_error = TRUE;
	144	break;
	145	}
	146
85ed4ab3 BV	147	if (packet_has_error)
85ed4ab3 BV	148	return;
df035528	149
85ed4ab3 BV	150	if (devc->state == LIVE_SPL_WAIT) {
	151	if (transfer->actual_length != 3 \|\| transfer->buffer[0] != 0x88) {
	152	sr_dbg("Received invalid SPL packet.");
	153	} else {
	154	fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
	155	send_data(sdi, fvalue, 1);
	156	devc->num_samples++;
	157	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
695dc859	158	sdi->driver->dev_acquisition_stop(sdi);
85ed4ab3	159	} else {
df035528 BV	160	/* let USB event handler fire off another
	161	* request when the time is right. */
	162	devc->state = LIVE_SPL_IDLE;
	163	}
	164	}
85ed4ab3 BV	165	} else if (devc->state == LOG_DATA_WAIT) {
	166	if (transfer->actual_length < 1 \|\| !(transfer->actual_length & 0x01)) {
	167	sr_dbg("Received invalid stored SPL packet.");
	168	} else {
	169	num_samples = (transfer->actual_length - 1) / 2;
	170	for (i = 0; i < num_samples; i++) {
	171	fvalue[i] = transfer->buffer[1 + i * 2] << 8;
	172	fvalue[i] += transfer->buffer[1 + i * 2 + 1];
	173	fvalue[i] /= 10.0;
	174	}
	175	send_data(sdi, fvalue, 1);
	176	devc->num_samples += num_samples;
	177	if (devc->num_samples >= devc->stored_samples) {
695dc859	178	sdi->driver->dev_acquisition_stop(sdi);
85ed4ab3 BV	179	} else {
	180	/* let USB event handler fire off another
	181	* request when the time is right. */
	182	devc->state = LOG_DATA_IDLE;
	183	}
	184	}
df035528 BV	185	}
df035528 BV	186
df035528 BV	187	}
df035528 BV	188
bc7be4a9 BV	189	SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
bc7be4a9 BV	190	{
ed759a08	191	struct dev_context *devc;
bc7be4a9 BV	192	struct sr_usb_dev_inst *usb;
	193	int len, ret;
	194	unsigned char buf[7];
ed759a08	195
bc7be4a9	196	sr_dbg("Configuring device.");
ed759a08	197
bc7be4a9 BV	198	usb = sdi->conn;
bc7be4a9 BV	199	devc = sdi->priv;
ed759a08	200
bc7be4a9 BV	201	buf[0] = CMD_CONFIGURE;
	202	buf[1] = devc->sample_interval;
	203	buf[2] = devc->alarm_low;
	204	buf[3] = devc->alarm_high;
	205	buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1;
	206	buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1;
	207	buf[6] = devc->data_source;
	208	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
	209	if (ret != 0 \|\| len != 7) {
	210	sr_dbg("Failed to configure device: %s", libusb_error_name(ret));
	211	return SR_ERR;
ed759a08 BV	212	}
ed759a08 BV	213
bc7be4a9 BV	214	/* The configure command ack takes about 32ms to come in. */
	215	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40);
	216	if (ret != 0 \|\| len != 1) {
	217	sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret));
	218	return SR_ERR;
	219	}
	220	if (buf[0] != (CMD_CONFIGURE \| 0x80)) {
	221	sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
	222	return SR_ERR;
	223	}
	224
85ed4ab3 BV	225	devc->config_dirty = FALSE;
85ed4ab3 BV	226
bc7be4a9 BV	227	return SR_OK;
	228	}
	229
	230	SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
	231	{
	232	struct sr_usb_dev_inst *usb;
	233	GDateTime *dt;
	234	int len, ret;
	235	unsigned char buf[7];
	236
	237	sr_dbg("Setting device date/time.");
	238
	239	usb = sdi->conn;
	240
	241	dt = g_date_time_new_now_local();
	242	buf[0] = CMD_SET_DATE_TIME;
	243	buf[1] = g_date_time_get_year(dt) - 2000;
	244	buf[2] = g_date_time_get_month(dt);
	245	buf[3] = g_date_time_get_day_of_month(dt);
	246	buf[4] = g_date_time_get_hour(dt);
	247	buf[5] = g_date_time_get_minute(dt);
	248	buf[6] = g_date_time_get_second(dt);
	249	g_date_time_unref(dt);
	250	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
	251	if (ret != 0 \|\| len != 7) {
	252	sr_dbg("Failed to set date/time: %s", libusb_error_name(ret));
	253	return SR_ERR;
	254	}
	255
	256	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 10);
	257	if (ret != 0 \|\| len != 1) {
	258	sr_dbg("Failed to set date/time (no ack): %s", libusb_error_name(ret));
	259	return SR_ERR;
	260	}
	261	if (buf[0] != (CMD_SET_DATE_TIME \| 0x80)) {
	262	sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
	263	return SR_ERR;
	264	}
	265
f336618c BV	266	return SR_OK;
	267	}
	268
	269	SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
	270	int *status)
	271	{
	272	struct sr_usb_dev_inst *usb;
	273	int len, ret;
	274	unsigned char buf;
	275
	276	sr_dbg("Getting device status.");
	277
	278	usb = sdi->conn;
	279	buf = CMD_GET_STATUS;
	280	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5);
	281	if (ret != 0 \|\| len != 1) {
	282	sr_dbg("Failed to get status: %s", libusb_error_name(ret));
	283	return SR_ERR;
	284	}
	285
	286	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10);
	287	if (ret != 0 \|\| len != 1) {
	288	sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
	289	return SR_ERR;
	290	}
	291	/* Need either 0x84 or 0xa4. */
	292	if (buf != (CMD_GET_STATUS \| 0x80) && buf != (CMD_GET_STATUS \| 0xa0)) {
	293	sr_dbg("Failed to get status: invalid response 0x%2.x", buf);
	294	return SR_ERR;
	295	}
bc7be4a9	296
f336618c BV	297	if (buf & 0x20)
	298	*status = DEVICE_INACTIVE;
	299	else
	300	*status = DEVICE_ACTIVE;
bc7be4a9 BV	301
	302	return SR_OK;
	303	}
	304
85ed4ab3 BV	305	SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
	306	unsigned char *buf)
	307	{
	308	struct sr_usb_dev_inst *usb;
	309	int len, ret;
	310
	311	sr_dbg("Getting logging info.");
	312
	313	usb = sdi->conn;
	314	buf[0] = CMD_GET_LOG_INFO;
	315	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
	316	if (ret != 0 \|\| len != 1) {
	317	sr_dbg("Failed to get status: %s", libusb_error_name(ret));
	318	return SR_ERR;
	319	}
	320
	321	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10);
	322	if (ret != 0 \|\| len != 9) {
	323	sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
	324	return SR_ERR;
	325	}
	326	if (buf[0] != (CMD_GET_LOG_INFO \| 0x80) \|\| buf[1] > 6) {
	327	sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]);
	328	return SR_ERR;
	329	}
	330
	331	return SR_OK;
	332	}