[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 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);
		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	22	#include "protocol.h"
df035528 BV	23	extern const uint64_t kecheng_kc_330b_sample_intervals[][2];
df035528 BV	24
bc7be4a9	25	SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data)
ed759a08	26	{
4f840ce9	27	struct sr_dev_driver *di;
df035528	28	struct drv_context *drvc;
bc7be4a9	29	struct dev_context *devc;
df035528 BV	30	struct sr_dev_inst *sdi;
df035528 BV	31	struct sr_usb_dev_inst *usb;
bc7be4a9	32	struct timeval tv;
df035528 BV	33	const uint64_t *intv_entry;
df035528 BV	34	gint64 now, interval;
6c60facc	35	int offset, len, ret;
85ed4ab3	36	unsigned char buf[4];
bc7be4a9	37
ed759a08	38	(void)fd;
bc7be4a9	39	(void)revents;
ed759a08	40
bc7be4a9 BV	41	sdi = cb_data;
bc7be4a9 BV	42	devc = sdi->priv;
df035528	43	usb = sdi->conn;
4f840ce9	44	di = sdi->driver;
41812aca	45	drvc = di->context;
bc7be4a9	46
df035528 BV	47	memset(&tv, 0, sizeof(struct timeval));
	48	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
	49	NULL);
	50
	51	if (sdi->status == SR_ST_STOPPING) {
	52	libusb_free_transfer(devc->xfer);
102f1239	53	usb_source_remove(sdi->session, drvc->sr_ctx);
bee2b016	54	std_session_send_df_end(sdi);
df035528 BV	55	sdi->status = SR_ST_ACTIVE;
	56	return TRUE;
	57	}
	58
	59	if (devc->state == LIVE_SPL_IDLE) {
85ed4ab3	60	/* Request samples at the interval rate. */
df035528 BV	61	now = g_get_monotonic_time() / 1000;
	62	intv_entry = kecheng_kc_330b_sample_intervals[devc->sample_interval];
	63	interval = intv_entry[0] * 1000 / intv_entry[1];
	64	if (now - devc->last_live_request > interval) {
85ed4ab3 BV	65	buf[0] = CMD_GET_LIVE_SPL;
85ed4ab3 BV	66	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
df035528 BV	67	if (ret != 0 \|\| len != 1) {
	68	sr_dbg("Failed to request new acquisition: %s",
	69	libusb_error_name(ret));
695dc859	70	sdi->driver->dev_acquisition_stop(sdi);
df035528 BV	71	return TRUE;
	72	}
	73	libusb_submit_transfer(devc->xfer);
	74	devc->last_live_request = now;
	75	devc->state = LIVE_SPL_WAIT;
	76	}
85ed4ab3 BV	77	} else if (devc->state == LIVE_SPL_IDLE) {
	78	buf[0] = CMD_GET_LOG_DATA;
	79	offset = devc->num_samples / 63;
	80	buf[1] = (offset >> 8) & 0xff;
	81	buf[2] = offset & 0xff;
	82	if (devc->stored_samples - devc->num_samples > 63)
	83	buf[3] = 63;
	84	else
	85	/* Last chunk. */
	86	buf[3] = devc->stored_samples - devc->num_samples;
	87	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 4, &len, 5);
	88	if (ret != 0 \|\| len != 4) {
	89	sr_dbg("Failed to request next chunk: %s",
	90	libusb_error_name(ret));
695dc859	91	sdi->driver->dev_acquisition_stop(sdi);
85ed4ab3 BV	92	return TRUE;
	93	}
	94	libusb_submit_transfer(devc->xfer);
	95	devc->state = LIVE_SPL_WAIT;
df035528	96	}
bc7be4a9 BV	97
	98	return TRUE;
	99	}
	100
df035528 BV	101	static void send_data(const struct sr_dev_inst sdi, void buf, unsigned int buf_len)
	102	{
	103	struct dev_context *devc;
	104	struct sr_datafeed_packet packet;
5faebab2	105	struct sr_datafeed_analog_old analog;
df035528 BV	106
	107	devc = sdi->priv;
	108
5faebab2	109	memset(&analog, 0, sizeof(struct sr_datafeed_analog_old));
df035528 BV	110	analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
	111	analog.mqflags = devc->mqflags;
	112	analog.unit = SR_UNIT_DECIBEL_SPL;
ba7dd8bb	113	analog.channels = sdi->channels;
df035528 BV	114	analog.num_samples = buf_len;
df035528 BV	115	analog.data = buf;
5faebab2	116	packet.type = SR_DF_ANALOG_OLD;
df035528	117	packet.payload = &analog;
695dc859	118	sr_session_send(sdi, &packet);
df035528 BV	119	}
df035528 BV	120
55462b8b	121	SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
df035528 BV	122	{
	123	struct dev_context *devc;
	124	struct sr_dev_inst *sdi;
85ed4ab3 BV	125	float fvalue[64];
85ed4ab3 BV	126	int packet_has_error, num_samples, i;
df035528 BV	127
	128	sdi = transfer->user_data;
	129	devc = sdi->priv;
	130
	131	packet_has_error = FALSE;
	132	switch (transfer->status) {
	133	case LIBUSB_TRANSFER_NO_DEVICE:
	134	/* USB device was unplugged. */
695dc859	135	sdi->driver->dev_acquisition_stop(sdi);
df035528 BV	136	return;
	137	case LIBUSB_TRANSFER_COMPLETED:
	138	case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
	139	break;
	140	default:
	141	packet_has_error = TRUE;
	142	break;
	143	}
	144
85ed4ab3 BV	145	if (packet_has_error)
85ed4ab3 BV	146	return;
df035528	147
85ed4ab3 BV	148	if (devc->state == LIVE_SPL_WAIT) {
	149	if (transfer->actual_length != 3 \|\| transfer->buffer[0] != 0x88) {
	150	sr_dbg("Received invalid SPL packet.");
	151	} else {
	152	fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
	153	send_data(sdi, fvalue, 1);
	154	devc->num_samples++;
	155	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
695dc859	156	sdi->driver->dev_acquisition_stop(sdi);
85ed4ab3	157	} else {
df035528 BV	158	/* let USB event handler fire off another
	159	* request when the time is right. */
	160	devc->state = LIVE_SPL_IDLE;
	161	}
	162	}
85ed4ab3 BV	163	} else if (devc->state == LOG_DATA_WAIT) {
	164	if (transfer->actual_length < 1 \|\| !(transfer->actual_length & 0x01)) {
	165	sr_dbg("Received invalid stored SPL packet.");
	166	} else {
	167	num_samples = (transfer->actual_length - 1) / 2;
	168	for (i = 0; i < num_samples; i++) {
	169	fvalue[i] = transfer->buffer[1 + i * 2] << 8;
	170	fvalue[i] += transfer->buffer[1 + i * 2 + 1];
	171	fvalue[i] /= 10.0;
	172	}
	173	send_data(sdi, fvalue, 1);
	174	devc->num_samples += num_samples;
	175	if (devc->num_samples >= devc->stored_samples) {
695dc859	176	sdi->driver->dev_acquisition_stop(sdi);
85ed4ab3 BV	177	} else {
	178	/* let USB event handler fire off another
	179	* request when the time is right. */
	180	devc->state = LOG_DATA_IDLE;
	181	}
	182	}
df035528 BV	183	}
df035528 BV	184
df035528 BV	185	}
df035528 BV	186
bc7be4a9 BV	187	SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
bc7be4a9 BV	188	{
ed759a08	189	struct dev_context *devc;
bc7be4a9 BV	190	struct sr_usb_dev_inst *usb;
	191	int len, ret;
	192	unsigned char buf[7];
ed759a08	193
bc7be4a9	194	sr_dbg("Configuring device.");
ed759a08	195
bc7be4a9 BV	196	usb = sdi->conn;
bc7be4a9 BV	197	devc = sdi->priv;
ed759a08	198
bc7be4a9 BV	199	buf[0] = CMD_CONFIGURE;
	200	buf[1] = devc->sample_interval;
	201	buf[2] = devc->alarm_low;
	202	buf[3] = devc->alarm_high;
	203	buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1;
	204	buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1;
	205	buf[6] = devc->data_source;
	206	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
	207	if (ret != 0 \|\| len != 7) {
	208	sr_dbg("Failed to configure device: %s", libusb_error_name(ret));
	209	return SR_ERR;
ed759a08 BV	210	}
ed759a08 BV	211
bc7be4a9 BV	212	/* The configure command ack takes about 32ms to come in. */
	213	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40);
	214	if (ret != 0 \|\| len != 1) {
	215	sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret));
	216	return SR_ERR;
	217	}
	218	if (buf[0] != (CMD_CONFIGURE \| 0x80)) {
	219	sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
	220	return SR_ERR;
	221	}
	222
85ed4ab3 BV	223	devc->config_dirty = FALSE;
85ed4ab3 BV	224
bc7be4a9 BV	225	return SR_OK;
	226	}
	227
	228	SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
	229	{
	230	struct sr_usb_dev_inst *usb;
	231	GDateTime *dt;
	232	int len, ret;
	233	unsigned char buf[7];
	234
	235	sr_dbg("Setting device date/time.");
	236
	237	usb = sdi->conn;
	238
	239	dt = g_date_time_new_now_local();
	240	buf[0] = CMD_SET_DATE_TIME;
	241	buf[1] = g_date_time_get_year(dt) - 2000;
	242	buf[2] = g_date_time_get_month(dt);
	243	buf[3] = g_date_time_get_day_of_month(dt);
	244	buf[4] = g_date_time_get_hour(dt);
	245	buf[5] = g_date_time_get_minute(dt);
	246	buf[6] = g_date_time_get_second(dt);
	247	g_date_time_unref(dt);
	248	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
	249	if (ret != 0 \|\| len != 7) {
	250	sr_dbg("Failed to set date/time: %s", libusb_error_name(ret));
	251	return SR_ERR;
	252	}
	253
	254	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 10);
	255	if (ret != 0 \|\| len != 1) {
	256	sr_dbg("Failed to set date/time (no ack): %s", libusb_error_name(ret));
	257	return SR_ERR;
	258	}
	259	if (buf[0] != (CMD_SET_DATE_TIME \| 0x80)) {
	260	sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
	261	return SR_ERR;
	262	}
	263
f336618c BV	264	return SR_OK;
	265	}
	266
	267	SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
	268	int *status)
	269	{
	270	struct sr_usb_dev_inst *usb;
	271	int len, ret;
	272	unsigned char buf;
	273
	274	sr_dbg("Getting device status.");
	275
	276	usb = sdi->conn;
	277	buf = CMD_GET_STATUS;
	278	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5);
	279	if (ret != 0 \|\| len != 1) {
	280	sr_dbg("Failed to get status: %s", libusb_error_name(ret));
	281	return SR_ERR;
	282	}
	283
	284	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10);
	285	if (ret != 0 \|\| len != 1) {
	286	sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
	287	return SR_ERR;
	288	}
	289	/* Need either 0x84 or 0xa4. */
	290	if (buf != (CMD_GET_STATUS \| 0x80) && buf != (CMD_GET_STATUS \| 0xa0)) {
	291	sr_dbg("Failed to get status: invalid response 0x%2.x", buf);
	292	return SR_ERR;
	293	}
bc7be4a9	294
f336618c BV	295	if (buf & 0x20)
	296	*status = DEVICE_INACTIVE;
	297	else
	298	*status = DEVICE_ACTIVE;
bc7be4a9 BV	299
	300	return SR_OK;
	301	}
	302
85ed4ab3 BV	303	SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
	304	unsigned char *buf)
	305	{
	306	struct sr_usb_dev_inst *usb;
	307	int len, ret;
	308
	309	sr_dbg("Getting logging info.");
	310
	311	usb = sdi->conn;
	312	buf[0] = CMD_GET_LOG_INFO;
	313	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
	314	if (ret != 0 \|\| len != 1) {
	315	sr_dbg("Failed to get status: %s", libusb_error_name(ret));
	316	return SR_ERR;
	317	}
	318
	319	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10);
	320	if (ret != 0 \|\| len != 9) {
	321	sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
	322	return SR_ERR;
	323	}
	324	if (buf[0] != (CMD_GET_LOG_INFO \| 0x80) \|\| buf[1] > 6) {
	325	sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]);
	326	return SR_ERR;
	327	}
	328
	329	return SR_OK;
	330	}