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_old analog;
109 memset(&analog, 0, sizeof(struct sr_datafeed_analog_old));
110 analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
111 analog.mqflags = devc->mqflags;
112 analog.unit = SR_UNIT_DECIBEL_SPL;
113 analog.channels = sdi->channels;
114 analog.num_samples = buf_len;
116 packet.type = SR_DF_ANALOG_OLD;
117 packet.payload = &analog;
118 sr_session_send(sdi, &packet);
121 SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
123 struct dev_context *devc;
124 struct sr_dev_inst *sdi;
126 int packet_has_error, num_samples, i;
128 sdi = transfer->user_data;
131 packet_has_error = FALSE;
132 switch (transfer->status) {
133 case LIBUSB_TRANSFER_NO_DEVICE:
134 /* USB device was unplugged. */
135 sdi->driver->dev_acquisition_stop(sdi);
137 case LIBUSB_TRANSFER_COMPLETED:
138 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
141 packet_has_error = TRUE;
145 if (packet_has_error)
148 if (devc->state == LIVE_SPL_WAIT) {
149 if (transfer->actual_length != 3 || transfer->buffer[0] != 0x88) {
150 sr_dbg("Received invalid SPL packet.");
152 fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
153 send_data(sdi, fvalue, 1);
155 if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
156 sdi->driver->dev_acquisition_stop(sdi);
158 /* let USB event handler fire off another
159 * request when the time is right. */
160 devc->state = LIVE_SPL_IDLE;
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.");
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];
173 send_data(sdi, fvalue, 1);
174 devc->num_samples += num_samples;
175 if (devc->num_samples >= devc->stored_samples) {
176 sdi->driver->dev_acquisition_stop(sdi);
178 /* let USB event handler fire off another
179 * request when the time is right. */
180 devc->state = LOG_DATA_IDLE;
187 SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
189 struct dev_context *devc;
190 struct sr_usb_dev_inst *usb;
192 unsigned char buf[7];
194 sr_dbg("Configuring device.");
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));
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));
218 if (buf[0] != (CMD_CONFIGURE | 0x80)) {
219 sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
223 devc->config_dirty = FALSE;
228 SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
230 struct sr_usb_dev_inst *usb;
233 unsigned char buf[7];
235 sr_dbg("Setting device date/time.");
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));
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));
259 if (buf[0] != (CMD_SET_DATE_TIME | 0x80)) {
260 sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
267 SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
270 struct sr_usb_dev_inst *usb;
274 sr_dbg("Getting device status.");
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));
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));
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);
296 *status = DEVICE_INACTIVE;
298 *status = DEVICE_ACTIVE;
303 SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
306 struct sr_usb_dev_inst *usb;
309 sr_dbg("Getting logging info.");
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));
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));
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]);