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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" |
ca314e06 | 23 | |
df035528 BV |
24 | extern const uint64_t kecheng_kc_330b_sample_intervals[][2]; |
25 | ||
bc7be4a9 | 26 | SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data) |
ed759a08 | 27 | { |
4f840ce9 | 28 | struct sr_dev_driver *di; |
df035528 | 29 | struct drv_context *drvc; |
bc7be4a9 | 30 | struct dev_context *devc; |
df035528 BV |
31 | struct sr_dev_inst *sdi; |
32 | struct sr_usb_dev_inst *usb; | |
bc7be4a9 | 33 | struct timeval tv; |
df035528 BV |
34 | const uint64_t *intv_entry; |
35 | gint64 now, interval; | |
6c60facc | 36 | int offset, len, ret; |
85ed4ab3 | 37 | unsigned char buf[4]; |
bc7be4a9 | 38 | |
ed759a08 | 39 | (void)fd; |
bc7be4a9 | 40 | (void)revents; |
ed759a08 | 41 | |
bc7be4a9 BV |
42 | sdi = cb_data; |
43 | devc = sdi->priv; | |
df035528 | 44 | usb = sdi->conn; |
4f840ce9 | 45 | di = sdi->driver; |
41812aca | 46 | drvc = di->context; |
bc7be4a9 | 47 | |
df035528 BV |
48 | memset(&tv, 0, sizeof(struct timeval)); |
49 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
50 | NULL); | |
51 | ||
52 | if (sdi->status == SR_ST_STOPPING) { | |
53 | libusb_free_transfer(devc->xfer); | |
102f1239 | 54 | usb_source_remove(sdi->session, drvc->sr_ctx); |
bee2b016 | 55 | std_session_send_df_end(sdi); |
df035528 BV |
56 | sdi->status = SR_ST_ACTIVE; |
57 | return TRUE; | |
58 | } | |
59 | ||
60 | if (devc->state == LIVE_SPL_IDLE) { | |
85ed4ab3 | 61 | /* Request samples at the interval rate. */ |
df035528 BV |
62 | now = g_get_monotonic_time() / 1000; |
63 | intv_entry = kecheng_kc_330b_sample_intervals[devc->sample_interval]; | |
64 | interval = intv_entry[0] * 1000 / intv_entry[1]; | |
65 | if (now - devc->last_live_request > interval) { | |
85ed4ab3 BV |
66 | buf[0] = CMD_GET_LIVE_SPL; |
67 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5); | |
df035528 BV |
68 | if (ret != 0 || len != 1) { |
69 | sr_dbg("Failed to request new acquisition: %s", | |
70 | libusb_error_name(ret)); | |
d2f7c417 | 71 | sr_dev_acquisition_stop(sdi); |
df035528 BV |
72 | return TRUE; |
73 | } | |
74 | libusb_submit_transfer(devc->xfer); | |
75 | devc->last_live_request = now; | |
76 | devc->state = LIVE_SPL_WAIT; | |
77 | } | |
85ed4ab3 BV |
78 | } else if (devc->state == LIVE_SPL_IDLE) { |
79 | buf[0] = CMD_GET_LOG_DATA; | |
80 | offset = devc->num_samples / 63; | |
81 | buf[1] = (offset >> 8) & 0xff; | |
82 | buf[2] = offset & 0xff; | |
83 | if (devc->stored_samples - devc->num_samples > 63) | |
84 | buf[3] = 63; | |
85 | else | |
86 | /* Last chunk. */ | |
87 | buf[3] = devc->stored_samples - devc->num_samples; | |
88 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 4, &len, 5); | |
89 | if (ret != 0 || len != 4) { | |
90 | sr_dbg("Failed to request next chunk: %s", | |
91 | libusb_error_name(ret)); | |
d2f7c417 | 92 | sr_dev_acquisition_stop(sdi); |
85ed4ab3 BV |
93 | return TRUE; |
94 | } | |
95 | libusb_submit_transfer(devc->xfer); | |
96 | devc->state = LIVE_SPL_WAIT; | |
df035528 | 97 | } |
bc7be4a9 BV |
98 | |
99 | return TRUE; | |
100 | } | |
101 | ||
df035528 BV |
102 | static void send_data(const struct sr_dev_inst *sdi, void *buf, unsigned int buf_len) |
103 | { | |
104 | struct dev_context *devc; | |
105 | struct sr_datafeed_packet packet; | |
2c911182 UH |
106 | struct sr_datafeed_analog analog; |
107 | struct sr_analog_encoding encoding; | |
108 | struct sr_analog_meaning meaning; | |
109 | struct sr_analog_spec spec; | |
df035528 BV |
110 | |
111 | devc = sdi->priv; | |
112 | ||
53b4ea39 | 113 | sr_analog_init(&analog, &encoding, &meaning, &spec, 1); |
2c911182 UH |
114 | analog.meaning->mq = SR_MQ_SOUND_PRESSURE_LEVEL; |
115 | analog.meaning->mqflags = devc->mqflags; | |
116 | analog.meaning->unit = SR_UNIT_DECIBEL_SPL; | |
117 | analog.meaning->channels = sdi->channels; | |
df035528 BV |
118 | analog.num_samples = buf_len; |
119 | analog.data = buf; | |
2c911182 | 120 | packet.type = SR_DF_ANALOG; |
df035528 | 121 | packet.payload = &analog; |
695dc859 | 122 | sr_session_send(sdi, &packet); |
df035528 BV |
123 | } |
124 | ||
55462b8b | 125 | SR_PRIV void LIBUSB_CALL kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer) |
df035528 BV |
126 | { |
127 | struct dev_context *devc; | |
128 | struct sr_dev_inst *sdi; | |
85ed4ab3 BV |
129 | float fvalue[64]; |
130 | int packet_has_error, num_samples, i; | |
df035528 BV |
131 | |
132 | sdi = transfer->user_data; | |
133 | devc = sdi->priv; | |
134 | ||
135 | packet_has_error = FALSE; | |
136 | switch (transfer->status) { | |
137 | case LIBUSB_TRANSFER_NO_DEVICE: | |
138 | /* USB device was unplugged. */ | |
d2f7c417 | 139 | sr_dev_acquisition_stop(sdi); |
df035528 BV |
140 | return; |
141 | case LIBUSB_TRANSFER_COMPLETED: | |
142 | case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */ | |
143 | break; | |
144 | default: | |
145 | packet_has_error = TRUE; | |
146 | break; | |
147 | } | |
148 | ||
85ed4ab3 BV |
149 | if (packet_has_error) |
150 | return; | |
df035528 | 151 | |
85ed4ab3 BV |
152 | if (devc->state == LIVE_SPL_WAIT) { |
153 | if (transfer->actual_length != 3 || transfer->buffer[0] != 0x88) { | |
154 | sr_dbg("Received invalid SPL packet."); | |
155 | } else { | |
156 | fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0; | |
157 | send_data(sdi, fvalue, 1); | |
158 | devc->num_samples++; | |
159 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) { | |
d2f7c417 | 160 | sr_dev_acquisition_stop(sdi); |
85ed4ab3 | 161 | } else { |
df035528 BV |
162 | /* let USB event handler fire off another |
163 | * request when the time is right. */ | |
164 | devc->state = LIVE_SPL_IDLE; | |
165 | } | |
166 | } | |
85ed4ab3 BV |
167 | } else if (devc->state == LOG_DATA_WAIT) { |
168 | if (transfer->actual_length < 1 || !(transfer->actual_length & 0x01)) { | |
169 | sr_dbg("Received invalid stored SPL packet."); | |
170 | } else { | |
171 | num_samples = (transfer->actual_length - 1) / 2; | |
172 | for (i = 0; i < num_samples; i++) { | |
173 | fvalue[i] = transfer->buffer[1 + i * 2] << 8; | |
174 | fvalue[i] += transfer->buffer[1 + i * 2 + 1]; | |
175 | fvalue[i] /= 10.0; | |
176 | } | |
177 | send_data(sdi, fvalue, 1); | |
178 | devc->num_samples += num_samples; | |
179 | if (devc->num_samples >= devc->stored_samples) { | |
d2f7c417 | 180 | sr_dev_acquisition_stop(sdi); |
85ed4ab3 BV |
181 | } else { |
182 | /* let USB event handler fire off another | |
183 | * request when the time is right. */ | |
184 | devc->state = LOG_DATA_IDLE; | |
185 | } | |
186 | } | |
df035528 BV |
187 | } |
188 | ||
df035528 BV |
189 | } |
190 | ||
bc7be4a9 BV |
191 | SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi) |
192 | { | |
ed759a08 | 193 | struct dev_context *devc; |
bc7be4a9 BV |
194 | struct sr_usb_dev_inst *usb; |
195 | int len, ret; | |
196 | unsigned char buf[7]; | |
ed759a08 | 197 | |
bc7be4a9 | 198 | sr_dbg("Configuring device."); |
ed759a08 | 199 | |
bc7be4a9 BV |
200 | usb = sdi->conn; |
201 | devc = sdi->priv; | |
ed759a08 | 202 | |
bc7be4a9 BV |
203 | buf[0] = CMD_CONFIGURE; |
204 | buf[1] = devc->sample_interval; | |
205 | buf[2] = devc->alarm_low; | |
206 | buf[3] = devc->alarm_high; | |
207 | buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1; | |
208 | buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1; | |
209 | buf[6] = devc->data_source; | |
210 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5); | |
211 | if (ret != 0 || len != 7) { | |
212 | sr_dbg("Failed to configure device: %s", libusb_error_name(ret)); | |
213 | return SR_ERR; | |
ed759a08 BV |
214 | } |
215 | ||
bc7be4a9 BV |
216 | /* The configure command ack takes about 32ms to come in. */ |
217 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40); | |
218 | if (ret != 0 || len != 1) { | |
219 | sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret)); | |
220 | return SR_ERR; | |
221 | } | |
222 | if (buf[0] != (CMD_CONFIGURE | 0x80)) { | |
223 | sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]); | |
224 | return SR_ERR; | |
225 | } | |
226 | ||
85ed4ab3 BV |
227 | devc->config_dirty = FALSE; |
228 | ||
bc7be4a9 BV |
229 | return SR_OK; |
230 | } | |
231 | ||
232 | SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi) | |
233 | { | |
234 | struct sr_usb_dev_inst *usb; | |
235 | GDateTime *dt; | |
236 | int len, ret; | |
237 | unsigned char buf[7]; | |
238 | ||
239 | sr_dbg("Setting device date/time."); | |
240 | ||
241 | usb = sdi->conn; | |
242 | ||
243 | dt = g_date_time_new_now_local(); | |
244 | buf[0] = CMD_SET_DATE_TIME; | |
245 | buf[1] = g_date_time_get_year(dt) - 2000; | |
246 | buf[2] = g_date_time_get_month(dt); | |
247 | buf[3] = g_date_time_get_day_of_month(dt); | |
248 | buf[4] = g_date_time_get_hour(dt); | |
249 | buf[5] = g_date_time_get_minute(dt); | |
250 | buf[6] = g_date_time_get_second(dt); | |
251 | g_date_time_unref(dt); | |
252 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5); | |
253 | if (ret != 0 || len != 7) { | |
254 | sr_dbg("Failed to set date/time: %s", libusb_error_name(ret)); | |
255 | return SR_ERR; | |
256 | } | |
257 | ||
258 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 10); | |
259 | if (ret != 0 || len != 1) { | |
260 | sr_dbg("Failed to set date/time (no ack): %s", libusb_error_name(ret)); | |
261 | return SR_ERR; | |
262 | } | |
263 | if (buf[0] != (CMD_SET_DATE_TIME | 0x80)) { | |
264 | sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]); | |
265 | return SR_ERR; | |
266 | } | |
267 | ||
f336618c BV |
268 | return SR_OK; |
269 | } | |
270 | ||
271 | SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi, | |
272 | int *status) | |
273 | { | |
274 | struct sr_usb_dev_inst *usb; | |
275 | int len, ret; | |
276 | unsigned char buf; | |
277 | ||
278 | sr_dbg("Getting device status."); | |
279 | ||
280 | usb = sdi->conn; | |
281 | buf = CMD_GET_STATUS; | |
282 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5); | |
283 | if (ret != 0 || len != 1) { | |
284 | sr_dbg("Failed to get status: %s", libusb_error_name(ret)); | |
285 | return SR_ERR; | |
286 | } | |
287 | ||
288 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10); | |
289 | if (ret != 0 || len != 1) { | |
290 | sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret)); | |
291 | return SR_ERR; | |
292 | } | |
293 | /* Need either 0x84 or 0xa4. */ | |
294 | if (buf != (CMD_GET_STATUS | 0x80) && buf != (CMD_GET_STATUS | 0xa0)) { | |
295 | sr_dbg("Failed to get status: invalid response 0x%2.x", buf); | |
296 | return SR_ERR; | |
297 | } | |
bc7be4a9 | 298 | |
f336618c BV |
299 | if (buf & 0x20) |
300 | *status = DEVICE_INACTIVE; | |
301 | else | |
302 | *status = DEVICE_ACTIVE; | |
bc7be4a9 BV |
303 | |
304 | return SR_OK; | |
305 | } | |
306 | ||
85ed4ab3 BV |
307 | SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi, |
308 | unsigned char *buf) | |
309 | { | |
310 | struct sr_usb_dev_inst *usb; | |
311 | int len, ret; | |
312 | ||
313 | sr_dbg("Getting logging info."); | |
314 | ||
315 | usb = sdi->conn; | |
316 | buf[0] = CMD_GET_LOG_INFO; | |
317 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5); | |
318 | if (ret != 0 || len != 1) { | |
319 | sr_dbg("Failed to get status: %s", libusb_error_name(ret)); | |
320 | return SR_ERR; | |
321 | } | |
322 | ||
323 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10); | |
324 | if (ret != 0 || len != 9) { | |
325 | sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret)); | |
326 | return SR_ERR; | |
327 | } | |
328 | if (buf[0] != (CMD_GET_LOG_INFO | 0x80) || buf[1] > 6) { | |
329 | sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]); | |
330 | return SR_ERR; | |
331 | } | |
332 | ||
333 | return SR_OK; | |
334 | } |