2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
23 extern const uint64_t kecheng_kc_330b_sample_intervals[][2];
25 SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data)
27 struct sr_dev_driver *di;
28 struct drv_context *drvc;
29 struct dev_context *devc;
30 struct sr_dev_inst *sdi;
31 struct sr_usb_dev_inst *usb;
33 const uint64_t *intv_entry;
47 memset(&tv, 0, sizeof(struct timeval));
48 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
51 if (sdi->status == SR_ST_STOPPING) {
52 libusb_free_transfer(devc->xfer);
53 usb_source_remove(sdi->session, drvc->sr_ctx);
54 std_session_send_df_end(sdi);
55 sdi->status = SR_ST_ACTIVE;
59 if (devc->state == LIVE_SPL_IDLE) {
60 /* Request samples at the interval rate. */
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) {
65 buf[0] = CMD_GET_LIVE_SPL;
66 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
67 if (ret != 0 || len != 1) {
68 sr_dbg("Failed to request new acquisition: %s",
69 libusb_error_name(ret));
70 sdi->driver->dev_acquisition_stop(sdi);
73 libusb_submit_transfer(devc->xfer);
74 devc->last_live_request = now;
75 devc->state = LIVE_SPL_WAIT;
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)
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));
91 sdi->driver->dev_acquisition_stop(sdi);
94 libusb_submit_transfer(devc->xfer);
95 devc->state = LIVE_SPL_WAIT;
101 static void send_data(const struct sr_dev_inst *sdi, void *buf, unsigned int buf_len)
103 struct dev_context *devc;
104 struct sr_datafeed_packet packet;
105 struct sr_datafeed_analog analog;
106 struct sr_analog_encoding encoding;
107 struct sr_analog_meaning meaning;
108 struct sr_analog_spec spec;
112 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
113 analog.meaning->mq = SR_MQ_SOUND_PRESSURE_LEVEL;
114 analog.meaning->mqflags = devc->mqflags;
115 analog.meaning->unit = SR_UNIT_DECIBEL_SPL;
116 analog.meaning->channels = sdi->channels;
117 analog.num_samples = buf_len;
119 packet.type = SR_DF_ANALOG;
120 packet.payload = &analog;
121 sr_session_send(sdi, &packet);
124 SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
126 struct dev_context *devc;
127 struct sr_dev_inst *sdi;
129 int packet_has_error, num_samples, i;
131 sdi = transfer->user_data;
134 packet_has_error = FALSE;
135 switch (transfer->status) {
136 case LIBUSB_TRANSFER_NO_DEVICE:
137 /* USB device was unplugged. */
138 sdi->driver->dev_acquisition_stop(sdi);
140 case LIBUSB_TRANSFER_COMPLETED:
141 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
144 packet_has_error = TRUE;
148 if (packet_has_error)
151 if (devc->state == LIVE_SPL_WAIT) {
152 if (transfer->actual_length != 3 || transfer->buffer[0] != 0x88) {
153 sr_dbg("Received invalid SPL packet.");
155 fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
156 send_data(sdi, fvalue, 1);
158 if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
159 sdi->driver->dev_acquisition_stop(sdi);
161 /* let USB event handler fire off another
162 * request when the time is right. */
163 devc->state = LIVE_SPL_IDLE;
166 } else if (devc->state == LOG_DATA_WAIT) {
167 if (transfer->actual_length < 1 || !(transfer->actual_length & 0x01)) {
168 sr_dbg("Received invalid stored SPL packet.");
170 num_samples = (transfer->actual_length - 1) / 2;
171 for (i = 0; i < num_samples; i++) {
172 fvalue[i] = transfer->buffer[1 + i * 2] << 8;
173 fvalue[i] += transfer->buffer[1 + i * 2 + 1];
176 send_data(sdi, fvalue, 1);
177 devc->num_samples += num_samples;
178 if (devc->num_samples >= devc->stored_samples) {
179 sdi->driver->dev_acquisition_stop(sdi);
181 /* let USB event handler fire off another
182 * request when the time is right. */
183 devc->state = LOG_DATA_IDLE;
190 SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
192 struct dev_context *devc;
193 struct sr_usb_dev_inst *usb;
195 unsigned char buf[7];
197 sr_dbg("Configuring device.");
202 buf[0] = CMD_CONFIGURE;
203 buf[1] = devc->sample_interval;
204 buf[2] = devc->alarm_low;
205 buf[3] = devc->alarm_high;
206 buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1;
207 buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1;
208 buf[6] = devc->data_source;
209 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
210 if (ret != 0 || len != 7) {
211 sr_dbg("Failed to configure device: %s", libusb_error_name(ret));
215 /* The configure command ack takes about 32ms to come in. */
216 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40);
217 if (ret != 0 || len != 1) {
218 sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret));
221 if (buf[0] != (CMD_CONFIGURE | 0x80)) {
222 sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
226 devc->config_dirty = FALSE;
231 SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
233 struct sr_usb_dev_inst *usb;
236 unsigned char buf[7];
238 sr_dbg("Setting device date/time.");
242 dt = g_date_time_new_now_local();
243 buf[0] = CMD_SET_DATE_TIME;
244 buf[1] = g_date_time_get_year(dt) - 2000;
245 buf[2] = g_date_time_get_month(dt);
246 buf[3] = g_date_time_get_day_of_month(dt);
247 buf[4] = g_date_time_get_hour(dt);
248 buf[5] = g_date_time_get_minute(dt);
249 buf[6] = g_date_time_get_second(dt);
250 g_date_time_unref(dt);
251 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
252 if (ret != 0 || len != 7) {
253 sr_dbg("Failed to set date/time: %s", libusb_error_name(ret));
257 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 10);
258 if (ret != 0 || len != 1) {
259 sr_dbg("Failed to set date/time (no ack): %s", libusb_error_name(ret));
262 if (buf[0] != (CMD_SET_DATE_TIME | 0x80)) {
263 sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
270 SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
273 struct sr_usb_dev_inst *usb;
277 sr_dbg("Getting device status.");
280 buf = CMD_GET_STATUS;
281 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5);
282 if (ret != 0 || len != 1) {
283 sr_dbg("Failed to get status: %s", libusb_error_name(ret));
287 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10);
288 if (ret != 0 || len != 1) {
289 sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
292 /* Need either 0x84 or 0xa4. */
293 if (buf != (CMD_GET_STATUS | 0x80) && buf != (CMD_GET_STATUS | 0xa0)) {
294 sr_dbg("Failed to get status: invalid response 0x%2.x", buf);
299 *status = DEVICE_INACTIVE;
301 *status = DEVICE_ACTIVE;
306 SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
309 struct sr_usb_dev_inst *usb;
312 sr_dbg("Getting logging info.");
315 buf[0] = CMD_GET_LOG_INFO;
316 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
317 if (ret != 0 || len != 1) {
318 sr_dbg("Failed to get status: %s", libusb_error_name(ret));
322 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10);
323 if (ret != 0 || len != 9) {
324 sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
327 if (buf[0] != (CMD_GET_LOG_INFO | 0x80) || buf[1] > 6) {
328 sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]);