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/>.
24 extern struct sr_dev_driver kecheng_kc_330b_driver_info;
25 extern const uint64_t kecheng_kc_330b_sample_intervals[][2];
27 SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data)
29 struct sr_dev_driver *di;
30 struct drv_context *drvc;
31 struct dev_context *devc;
32 struct sr_datafeed_packet packet;
33 struct sr_dev_inst *sdi;
34 struct sr_usb_dev_inst *usb;
36 const uint64_t *intv_entry;
50 memset(&tv, 0, sizeof(struct timeval));
51 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
54 if (sdi->status == SR_ST_STOPPING) {
55 libusb_free_transfer(devc->xfer);
56 usb_source_remove(sdi->session, drvc->sr_ctx);
57 packet.type = SR_DF_END;
58 sr_session_send(cb_data, &packet);
59 sdi->status = SR_ST_ACTIVE;
63 if (devc->state == LIVE_SPL_IDLE) {
64 /* Request samples at the interval rate. */
65 now = g_get_monotonic_time() / 1000;
66 intv_entry = kecheng_kc_330b_sample_intervals[devc->sample_interval];
67 interval = intv_entry[0] * 1000 / intv_entry[1];
68 if (now - devc->last_live_request > interval) {
69 buf[0] = CMD_GET_LIVE_SPL;
70 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
71 if (ret != 0 || len != 1) {
72 sr_dbg("Failed to request new acquisition: %s",
73 libusb_error_name(ret));
74 sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
78 libusb_submit_transfer(devc->xfer);
79 devc->last_live_request = now;
80 devc->state = LIVE_SPL_WAIT;
82 } else if (devc->state == LIVE_SPL_IDLE) {
83 buf[0] = CMD_GET_LOG_DATA;
84 offset = devc->num_samples / 63;
85 buf[1] = (offset >> 8) & 0xff;
86 buf[2] = offset & 0xff;
87 if (devc->stored_samples - devc->num_samples > 63)
91 buf[3] = devc->stored_samples - devc->num_samples;
92 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 4, &len, 5);
93 if (ret != 0 || len != 4) {
94 sr_dbg("Failed to request next chunk: %s",
95 libusb_error_name(ret));
96 sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
100 libusb_submit_transfer(devc->xfer);
101 devc->state = LIVE_SPL_WAIT;
107 static void send_data(const struct sr_dev_inst *sdi, void *buf, unsigned int buf_len)
109 struct dev_context *devc;
110 struct sr_datafeed_packet packet;
111 struct sr_datafeed_analog_old analog;
115 memset(&analog, 0, sizeof(struct sr_datafeed_analog_old));
116 analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
117 analog.mqflags = devc->mqflags;
118 analog.unit = SR_UNIT_DECIBEL_SPL;
119 analog.channels = sdi->channels;
120 analog.num_samples = buf_len;
122 packet.type = SR_DF_ANALOG_OLD;
123 packet.payload = &analog;
124 sr_session_send(devc->cb_data, &packet);
128 SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
130 struct dev_context *devc;
131 struct sr_dev_inst *sdi;
133 int packet_has_error, num_samples, i;
135 sdi = transfer->user_data;
138 packet_has_error = FALSE;
139 switch (transfer->status) {
140 case LIBUSB_TRANSFER_NO_DEVICE:
141 /* USB device was unplugged. */
142 sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
145 case LIBUSB_TRANSFER_COMPLETED:
146 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
149 packet_has_error = TRUE;
153 if (packet_has_error)
156 if (devc->state == LIVE_SPL_WAIT) {
157 if (transfer->actual_length != 3 || transfer->buffer[0] != 0x88) {
158 sr_dbg("Received invalid SPL packet.");
160 fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
161 send_data(sdi, fvalue, 1);
163 if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
164 sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
167 /* let USB event handler fire off another
168 * request when the time is right. */
169 devc->state = LIVE_SPL_IDLE;
172 } else if (devc->state == LOG_DATA_WAIT) {
173 if (transfer->actual_length < 1 || !(transfer->actual_length & 0x01)) {
174 sr_dbg("Received invalid stored SPL packet.");
176 num_samples = (transfer->actual_length - 1) / 2;
177 for (i = 0; i < num_samples; i++) {
178 fvalue[i] = transfer->buffer[1 + i * 2] << 8;
179 fvalue[i] += transfer->buffer[1 + i * 2 + 1];
182 send_data(sdi, fvalue, 1);
183 devc->num_samples += num_samples;
184 if (devc->num_samples >= devc->stored_samples) {
185 sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
188 /* let USB event handler fire off another
189 * request when the time is right. */
190 devc->state = LOG_DATA_IDLE;
197 SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
199 struct dev_context *devc;
200 struct sr_usb_dev_inst *usb;
202 unsigned char buf[7];
204 sr_dbg("Configuring device.");
209 buf[0] = CMD_CONFIGURE;
210 buf[1] = devc->sample_interval;
211 buf[2] = devc->alarm_low;
212 buf[3] = devc->alarm_high;
213 buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1;
214 buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1;
215 buf[6] = devc->data_source;
216 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
217 if (ret != 0 || len != 7) {
218 sr_dbg("Failed to configure device: %s", libusb_error_name(ret));
222 /* The configure command ack takes about 32ms to come in. */
223 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40);
224 if (ret != 0 || len != 1) {
225 sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret));
228 if (buf[0] != (CMD_CONFIGURE | 0x80)) {
229 sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
233 devc->config_dirty = FALSE;
238 SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
240 struct sr_usb_dev_inst *usb;
243 unsigned char buf[7];
245 sr_dbg("Setting device date/time.");
249 dt = g_date_time_new_now_local();
250 buf[0] = CMD_SET_DATE_TIME;
251 buf[1] = g_date_time_get_year(dt) - 2000;
252 buf[2] = g_date_time_get_month(dt);
253 buf[3] = g_date_time_get_day_of_month(dt);
254 buf[4] = g_date_time_get_hour(dt);
255 buf[5] = g_date_time_get_minute(dt);
256 buf[6] = g_date_time_get_second(dt);
257 g_date_time_unref(dt);
258 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
259 if (ret != 0 || len != 7) {
260 sr_dbg("Failed to set date/time: %s", libusb_error_name(ret));
264 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 10);
265 if (ret != 0 || len != 1) {
266 sr_dbg("Failed to set date/time (no ack): %s", libusb_error_name(ret));
269 if (buf[0] != (CMD_SET_DATE_TIME | 0x80)) {
270 sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
277 SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
280 struct sr_usb_dev_inst *usb;
284 sr_dbg("Getting device status.");
287 buf = CMD_GET_STATUS;
288 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5);
289 if (ret != 0 || len != 1) {
290 sr_dbg("Failed to get status: %s", libusb_error_name(ret));
294 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10);
295 if (ret != 0 || len != 1) {
296 sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
299 /* Need either 0x84 or 0xa4. */
300 if (buf != (CMD_GET_STATUS | 0x80) && buf != (CMD_GET_STATUS | 0xa0)) {
301 sr_dbg("Failed to get status: invalid response 0x%2.x", buf);
306 *status = DEVICE_INACTIVE;
308 *status = DEVICE_ACTIVE;
313 SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
316 struct sr_usb_dev_inst *usb;
319 sr_dbg("Getting logging info.");
322 buf[0] = CMD_GET_LOG_INFO;
323 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
324 if (ret != 0 || len != 1) {
325 sr_dbg("Failed to get status: %s", libusb_error_name(ret));
329 ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10);
330 if (ret != 0 || len != 9) {
331 sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
334 if (buf[0] != (CMD_GET_LOG_INFO | 0x80) || buf[1] > 6) {
335 sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]);