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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 | ||
20 | #include <config.h> | |
21 | #include <string.h> | |
22 | #include "protocol.h" | |
23 | ||
24 | /* Length of expected payload for each token. */ | |
25 | static const int token_payloads[][2] = { | |
26 | { TOKEN_WEIGHT_TIME_FAST, 0 }, | |
27 | { TOKEN_WEIGHT_TIME_SLOW, 0 }, | |
28 | { TOKEN_HOLD_MAX, 0 }, | |
29 | { TOKEN_HOLD_MIN, 0 }, | |
30 | { TOKEN_TIME, 3 }, | |
31 | { TOKEN_MEAS_RANGE_OVER, 0 }, | |
32 | { TOKEN_MEAS_RANGE_UNDER, 0 }, | |
33 | { TOKEN_STORE_FULL, 0 }, | |
34 | { TOKEN_RECORDING_ON, 0 }, | |
35 | { TOKEN_MEAS_WAS_READOUT, 1 }, | |
36 | { TOKEN_MEAS_WAS_BARGRAPH, 0 }, | |
37 | { TOKEN_MEASUREMENT, 2 }, | |
38 | { TOKEN_HOLD_NONE, 0 }, | |
39 | { TOKEN_BATTERY_LOW, 0 }, | |
40 | { TOKEN_MEAS_RANGE_OK, 0 }, | |
41 | { TOKEN_STORE_OK, 0 }, | |
42 | { TOKEN_RECORDING_OFF, 0 }, | |
43 | { TOKEN_WEIGHT_FREQ_A, 1 }, | |
44 | { TOKEN_WEIGHT_FREQ_C, 1 }, | |
45 | { TOKEN_BATTERY_OK, 0 }, | |
46 | { TOKEN_MEAS_RANGE_30_80, 0 }, | |
47 | { TOKEN_MEAS_RANGE_30_130, 0 }, | |
48 | { TOKEN_MEAS_RANGE_50_100, 0 }, | |
49 | { TOKEN_MEAS_RANGE_80_130, 0 }, | |
50 | }; | |
51 | ||
52 | static int find_token_payload_len(unsigned char c) | |
53 | { | |
54 | unsigned int i; | |
55 | ||
56 | for (i = 0; i < ARRAY_SIZE(token_payloads); i++) { | |
57 | if (token_payloads[i][0] == c) | |
58 | return token_payloads[i][1]; | |
59 | } | |
60 | ||
61 | return -1; | |
62 | } | |
63 | ||
64 | /* Process measurement or setting (0xa5 command). */ | |
65 | static void process_mset(const struct sr_dev_inst *sdi) | |
66 | { | |
67 | struct dev_context *devc; | |
68 | struct sr_datafeed_packet packet; | |
69 | struct sr_datafeed_analog analog; | |
70 | struct sr_analog_encoding encoding; | |
71 | struct sr_analog_meaning meaning; | |
72 | struct sr_analog_spec spec; | |
73 | GString *dbg; | |
74 | float fvalue; | |
75 | int i; | |
76 | ||
77 | devc = sdi->priv; | |
78 | if (sr_log_loglevel_get() >= SR_LOG_SPEW) { | |
79 | dbg = g_string_sized_new(128); | |
80 | g_string_printf(dbg, "got command 0x%.2x token 0x%.2x", | |
81 | devc->cmd, devc->token); | |
82 | if (devc->buf_len) { | |
83 | g_string_append_printf(dbg, " payload"); | |
84 | for (i = 0; i < devc->buf_len; i++) | |
85 | g_string_append_printf(dbg, " %.2x", devc->buf[i]); | |
86 | } | |
87 | sr_spew("%s", dbg->str); | |
88 | g_string_free(dbg, TRUE); | |
89 | } | |
90 | ||
91 | switch (devc->token) { | |
92 | case TOKEN_WEIGHT_TIME_FAST: | |
93 | devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
94 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
95 | break; | |
96 | case TOKEN_WEIGHT_TIME_SLOW: | |
97 | devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
98 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
99 | break; | |
100 | case TOKEN_WEIGHT_FREQ_A: | |
101 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
102 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
103 | break; | |
104 | case TOKEN_WEIGHT_FREQ_C: | |
105 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
106 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
107 | break; | |
108 | case TOKEN_HOLD_MAX: | |
109 | devc->cur_mqflags |= SR_MQFLAG_HOLD | SR_MQFLAG_MAX; | |
110 | devc->cur_mqflags &= ~SR_MQFLAG_MIN; | |
111 | break; | |
112 | case TOKEN_HOLD_MIN: | |
113 | devc->cur_mqflags |= SR_MQFLAG_HOLD | SR_MQFLAG_MIN; | |
114 | devc->cur_mqflags &= ~SR_MQFLAG_MAX; | |
115 | break; | |
116 | case TOKEN_HOLD_NONE: | |
117 | devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN | SR_MQFLAG_HOLD); | |
118 | break; | |
119 | case TOKEN_MEASUREMENT: | |
120 | fvalue = ((devc->buf[0] & 0xf0) >> 4) * 100; | |
121 | fvalue += (devc->buf[0] & 0x0f) * 10; | |
122 | fvalue += ((devc->buf[1] & 0xf0) >> 4); | |
123 | fvalue += (devc->buf[1] & 0x0f) / 10.0; | |
124 | devc->last_spl = fvalue; | |
125 | break; | |
126 | case TOKEN_MEAS_WAS_READOUT: | |
127 | case TOKEN_MEAS_WAS_BARGRAPH: | |
128 | if (devc->cur_mqflags & (SR_MQFLAG_MAX | SR_MQFLAG_MIN)) { | |
129 | if (devc->token == TOKEN_MEAS_WAS_BARGRAPH) { | |
130 | /* The device still sends bargraph measurements even | |
131 | * when in max/min hold mode. Suppress them here, unless | |
132 | * they're readout values. This duplicates the behavior | |
133 | * of the device display exactly. */ | |
134 | break; | |
135 | } | |
136 | } | |
137 | sr_analog_init(&analog, &encoding, &meaning, &spec, 1); | |
138 | analog.meaning->mq = SR_MQ_SOUND_PRESSURE_LEVEL; | |
139 | analog.meaning->mqflags = devc->cur_mqflags; | |
140 | analog.meaning->unit = SR_UNIT_DECIBEL_SPL; | |
141 | analog.meaning->channels = sdi->channels; | |
142 | analog.num_samples = 1; | |
143 | analog.data = &devc->last_spl; | |
144 | packet.type = SR_DF_ANALOG; | |
145 | packet.payload = &analog; | |
146 | sr_session_send(sdi, &packet); | |
147 | ||
148 | devc->num_samples++; | |
149 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) | |
150 | sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi); | |
151 | break; | |
152 | case TOKEN_RECORDING_ON: | |
153 | devc->recording = TRUE; | |
154 | break; | |
155 | case TOKEN_RECORDING_OFF: | |
156 | devc->recording = FALSE; | |
157 | break; | |
158 | case TOKEN_MEAS_RANGE_30_80: | |
159 | case TOKEN_MEAS_RANGE_30_130: | |
160 | case TOKEN_MEAS_RANGE_50_100: | |
161 | case TOKEN_MEAS_RANGE_80_130: | |
162 | devc->cur_meas_range = devc->token; | |
163 | break; | |
164 | case TOKEN_TIME: | |
165 | case TOKEN_STORE_OK: | |
166 | case TOKEN_STORE_FULL: | |
167 | case TOKEN_BATTERY_OK: | |
168 | case TOKEN_BATTERY_LOW: | |
169 | case TOKEN_MEAS_RANGE_OK: | |
170 | case TOKEN_MEAS_RANGE_OVER: | |
171 | case TOKEN_MEAS_RANGE_UNDER: | |
172 | /* Not useful, or not expressible in sigrok. */ | |
173 | break; | |
174 | } | |
175 | ||
176 | } | |
177 | ||
178 | static void send_data(const struct sr_dev_inst *sdi, unsigned char *data, | |
179 | uint64_t num_samples) | |
180 | { | |
181 | struct dev_context *devc; | |
182 | struct sr_datafeed_packet packet; | |
183 | struct sr_datafeed_analog analog; | |
184 | struct sr_analog_encoding encoding; | |
185 | struct sr_analog_meaning meaning; | |
186 | struct sr_analog_spec spec; | |
187 | float fbuf[SAMPLES_PER_PACKET]; | |
188 | unsigned int i; | |
189 | ||
190 | devc = sdi->priv; | |
191 | ||
192 | for (i = 0; i < num_samples; i++) { | |
193 | fbuf[i] = ((data[i * 2] & 0xf0) >> 4) * 100; | |
194 | fbuf[i] += (data[i * 2] & 0x0f) * 10; | |
195 | fbuf[i] += ((data[i * 2 + 1] & 0xf0) >> 4); | |
196 | fbuf[i] += (data[i * 2 + 1] & 0x0f) / 10.0; | |
197 | } | |
198 | sr_analog_init(&analog, &encoding, &meaning, &spec, 1); | |
199 | analog.meaning->mq = SR_MQ_SOUND_PRESSURE_LEVEL; | |
200 | analog.meaning->mqflags = devc->cur_mqflags; | |
201 | analog.meaning->unit = SR_UNIT_DECIBEL_SPL; | |
202 | analog.meaning->channels = sdi->channels; | |
203 | analog.num_samples = num_samples; | |
204 | analog.data = fbuf; | |
205 | packet.type = SR_DF_ANALOG; | |
206 | packet.payload = &analog; | |
207 | sr_session_send(sdi, &packet); | |
208 | ||
209 | devc->num_samples += analog.num_samples; | |
210 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) | |
211 | sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi); | |
212 | ||
213 | return; | |
214 | } | |
215 | ||
216 | static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c, | |
217 | int handle_packets) | |
218 | { | |
219 | struct dev_context *devc; | |
220 | struct sr_datafeed_packet packet; | |
221 | struct sr_datafeed_meta meta; | |
222 | struct sr_config *src; | |
223 | gint64 cur_time; | |
224 | int len; | |
225 | ||
226 | if (!(devc = sdi->priv)) | |
227 | return; | |
228 | ||
229 | if (c == 0xff) { | |
230 | /* Device is in hold mode */ | |
231 | devc->cur_mqflags |= SR_MQFLAG_HOLD; | |
232 | ||
233 | if (devc->hold_last_sent == 0) { | |
234 | /* First hold notification. */ | |
235 | devc->hold_last_sent = g_get_monotonic_time(); | |
236 | /* When the device leaves hold mode, it starts from scratch. */ | |
237 | devc->state = ST_INIT; | |
238 | } else { | |
239 | cur_time = g_get_monotonic_time(); | |
240 | if (cur_time - devc->hold_last_sent > HOLD_REPEAT_INTERVAL) { | |
241 | /* Force the last measurement out again. */ | |
242 | devc->cmd = 0xa5; | |
243 | devc->token = TOKEN_MEAS_WAS_READOUT; | |
244 | if (handle_packets) | |
245 | process_mset(sdi); | |
246 | devc->hold_last_sent = cur_time; | |
247 | } | |
248 | } | |
249 | ||
250 | return; | |
251 | } | |
252 | devc->cur_mqflags &= ~SR_MQFLAG_HOLD; | |
253 | devc->hold_last_sent = 0; | |
254 | ||
255 | if (devc->state == ST_INIT) { | |
256 | if (c == 0xa5) { | |
257 | devc->cmd = c; | |
258 | devc->token = 0x00; | |
259 | devc->state = ST_GET_TOKEN; | |
260 | } else if (c == 0xbb) { | |
261 | devc->cmd = c; | |
262 | devc->buf_len = 0; | |
263 | devc->state = ST_GET_LOG_HEADER; | |
264 | sr_dbg("got command 0xbb"); | |
265 | } | |
266 | } else if (devc->state == ST_GET_TOKEN) { | |
267 | devc->token = c; | |
268 | devc->buf_len = 0; | |
269 | len = find_token_payload_len(devc->token); | |
270 | if (len == -1 || len > 0) { | |
271 | devc->buf_len = 0; | |
272 | devc->state = ST_GET_DATA; | |
273 | } else { | |
274 | if (handle_packets) | |
275 | process_mset(sdi); | |
276 | devc->state = ST_INIT; | |
277 | } | |
278 | } else if (devc->state == ST_GET_DATA) { | |
279 | len = find_token_payload_len(devc->token); | |
280 | if (len == -1) { | |
281 | /* We don't know this token. */ | |
282 | sr_dbg("Unknown 0xa5 token 0x%.2x", devc->token); | |
283 | if (c == 0xa5 || c == 0xbb) { | |
284 | /* Looks like a new command however. */ | |
285 | if (handle_packets) | |
286 | process_mset(sdi); | |
287 | devc->state = ST_INIT; | |
288 | } else { | |
289 | devc->buf[devc->buf_len++] = c; | |
290 | if (devc->buf_len > BUF_SIZE) { | |
291 | /* Shouldn't happen, ignore. */ | |
292 | devc->state = ST_INIT; | |
293 | } | |
294 | } | |
295 | } else { | |
296 | devc->buf[devc->buf_len++] = c; | |
297 | if (devc->buf_len == len) { | |
298 | if (handle_packets) | |
299 | process_mset(sdi); | |
300 | devc->state = ST_INIT; | |
301 | } else if (devc->buf_len > BUF_SIZE) { | |
302 | /* Shouldn't happen, ignore. */ | |
303 | devc->state = ST_INIT; | |
304 | } | |
305 | } | |
306 | } else if (devc->state == ST_GET_LOG_HEADER) { | |
307 | sr_dbg("log header: 0x%.2x", c); | |
308 | if (devc->buf_len < 2) | |
309 | devc->buf[devc->buf_len++] = c; | |
310 | if (devc->buf_len == 2) { | |
311 | sr_dbg("Device says it has %d bytes stored.", | |
312 | ((devc->buf[0] << 8) + devc->buf[1]) - 100); | |
313 | devc->buf_len = 0; | |
314 | devc->state = ST_GET_LOG_RECORD_META; | |
315 | } | |
316 | } else if (devc->state == ST_GET_LOG_RECORD_META) { | |
317 | sr_dbg("log meta: 0x%.2x", c); | |
318 | if (c == RECORD_END) { | |
319 | devc->state = ST_INIT; | |
320 | /* Stop acquisition after transferring all stored | |
321 | * records. Otherwise the frontend would have no | |
322 | * way to tell where stored data ends and live | |
323 | * measurements begin. */ | |
324 | sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi); | |
325 | } else if (c == RECORD_DATA) { | |
326 | devc->buf_len = 0; | |
327 | devc->state = ST_GET_LOG_RECORD_DATA; | |
328 | } else { | |
329 | /* RECORD_DBA/RECORD_DBC + 7 bytes of metadata */ | |
330 | devc->buf[devc->buf_len++] = c; | |
331 | if (devc->buf_len < 8) | |
332 | /* Keep filling up the record header. */ | |
333 | return; | |
334 | if (devc->buf[0] == RECORD_DBA) | |
335 | devc->cur_mqflags = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
336 | else if (devc->buf[0] == RECORD_DBC) | |
337 | devc->cur_mqflags = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
338 | else { | |
339 | /* Shouldn't happen. */ | |
340 | sr_dbg("Unknown record token 0x%.2x", c); | |
341 | return; | |
342 | } | |
343 | packet.type = SR_DF_META; | |
344 | packet.payload = &meta; | |
345 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, | |
346 | g_variant_new_uint64(devc->buf[7] * 1000)); | |
347 | meta.config = g_slist_append(NULL, src); | |
348 | sr_session_send(sdi, &packet); | |
349 | g_free(src); | |
350 | devc->buf_len = 0; | |
351 | } | |
352 | } else if (devc->state == ST_GET_LOG_RECORD_DATA) { | |
353 | sr_dbg("log data: 0x%.2x", c); | |
354 | if (c == RECORD_DBA || c == RECORD_DBC || c == RECORD_DATA || c == RECORD_END) { | |
355 | /* Work around off-by-one bug in device firmware. This | |
356 | * happens only on the last record, i.e. before RECORD_END */ | |
357 | if (devc->buf_len & 1) | |
358 | devc->buf_len--; | |
359 | /* Done with this set of samples */ | |
360 | send_data(sdi, devc->buf, devc->buf_len / 2); | |
361 | devc->buf_len = 0; | |
362 | ||
363 | /* Process this meta marker in the right state. */ | |
364 | devc->state = ST_GET_LOG_RECORD_META; | |
365 | process_byte(sdi, c, handle_packets); | |
366 | } else { | |
367 | devc->buf[devc->buf_len++] = c; | |
368 | if (devc->buf_len == SAMPLES_PER_PACKET * 2) { | |
369 | send_data(sdi, devc->buf, devc->buf_len / 2); | |
370 | devc->buf_len = 0; | |
371 | } | |
372 | } | |
373 | } | |
374 | ||
375 | } | |
376 | ||
377 | SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data) | |
378 | { | |
379 | const struct sr_dev_inst *sdi; | |
380 | struct dev_context *devc; | |
381 | struct sr_serial_dev_inst *serial; | |
382 | unsigned char c, cmd; | |
383 | ||
384 | (void)fd; | |
385 | ||
386 | if (!(sdi = cb_data)) | |
387 | return TRUE; | |
388 | ||
389 | devc = sdi->priv; | |
390 | serial = sdi->conn; | |
391 | if (revents == G_IO_IN) { | |
392 | if (serial_read_nonblocking(serial, &c, 1) != 1) | |
393 | return TRUE; | |
394 | process_byte(sdi, c, TRUE); | |
395 | ||
396 | if (devc->enable_data_source_memory) { | |
397 | if (devc->state == ST_GET_LOG_HEADER) { | |
398 | /* Memory transfer started. */ | |
399 | devc->enable_data_source_memory = FALSE; | |
400 | } else { | |
401 | /* Tell device to start transferring from memory. */ | |
402 | cmd = CMD_TRANSFER_MEMORY; | |
403 | serial_write_nonblocking(serial, &cmd, 1); | |
404 | } | |
405 | } | |
406 | } | |
407 | ||
408 | return TRUE; | |
409 | } | |
410 | ||
411 | static int wait_for_token(const struct sr_dev_inst *sdi, int8_t *tokens, int timeout) | |
412 | { | |
413 | struct dev_context *devc; | |
414 | struct sr_serial_dev_inst *serial; | |
415 | gint64 start_time; | |
416 | int i; | |
417 | unsigned char c; | |
418 | ||
419 | serial = sdi->conn; | |
420 | devc = sdi->priv; | |
421 | devc->state = ST_INIT; | |
422 | start_time = g_get_monotonic_time() / 1000; | |
423 | while (TRUE) { | |
424 | if (serial_read_nonblocking(serial, &c, 1) != 1) | |
425 | /* Device might have gone away. */ | |
426 | return SR_ERR; | |
427 | process_byte(sdi, c, FALSE); | |
428 | if (devc->state != ST_INIT) | |
429 | /* Wait for a whole packet to get processed. */ | |
430 | continue; | |
431 | for (i = 0; tokens[i] != -1; i++) { | |
432 | if (devc->token == tokens[i]) { | |
433 | sr_spew("wait_for_token: got token 0x%.2x", devc->token); | |
434 | return SR_OK; | |
435 | } | |
436 | } | |
437 | if (timeout && g_get_monotonic_time() / 1000 - start_time > timeout) | |
438 | return SR_ERR_TIMEOUT; | |
439 | } | |
440 | ||
441 | return SR_OK; | |
442 | } | |
443 | ||
444 | /* cmd is the command to send, tokens are the tokens that denote the state | |
445 | * which the command affects. The first token is the desired state. */ | |
446 | static int cem_dt_885x_toggle(const struct sr_dev_inst *sdi, uint8_t cmd, | |
447 | int8_t *tokens, int timeout) | |
448 | { | |
449 | struct dev_context *devc; | |
450 | struct sr_serial_dev_inst *serial; | |
451 | ||
452 | serial = sdi->conn; | |
453 | devc = sdi->priv; | |
454 | ||
455 | /* The device doesn't respond to commands very well. The | |
456 | * only thing to do is wait for the token that will confirm | |
457 | * whether the command worked or not, and resend if needed. */ | |
458 | while (TRUE) { | |
459 | if (serial_write_nonblocking(serial, (const void *)&cmd, 1) != 1) | |
460 | return SR_ERR; | |
461 | if (wait_for_token(sdi, tokens, timeout) == SR_ERR) | |
462 | return SR_ERR; | |
463 | if (devc->token == tokens[0]) | |
464 | /* It worked. */ | |
465 | break; | |
466 | } | |
467 | ||
468 | return SR_OK; | |
469 | } | |
470 | ||
471 | SR_PRIV gboolean cem_dt_885x_recording_get(const struct sr_dev_inst *sdi, | |
472 | int *state) | |
473 | { | |
474 | struct dev_context *devc; | |
475 | int8_t tokens[5]; | |
476 | ||
477 | devc = sdi->priv; | |
478 | if (devc->recording == -1) { | |
479 | /* Didn't pick up device state yet. */ | |
480 | tokens[0] = TOKEN_RECORDING_ON; | |
481 | tokens[1] = TOKEN_RECORDING_OFF; | |
482 | tokens[2] = -1; | |
483 | if (wait_for_token(sdi, tokens, 510) != SR_OK) | |
484 | return SR_ERR; | |
485 | } | |
486 | *state = devc->token == TOKEN_RECORDING_ON; | |
487 | ||
488 | return SR_OK; | |
489 | } | |
490 | ||
491 | SR_PRIV int cem_dt_885x_recording_set(const struct sr_dev_inst *sdi, | |
492 | gboolean state) | |
493 | { | |
494 | struct dev_context *devc; | |
495 | int ret; | |
496 | int8_t tokens[5]; | |
497 | ||
498 | devc = sdi->priv; | |
499 | ||
500 | /* The toggle below needs the desired state in first position. */ | |
501 | if (state) { | |
502 | tokens[0] = TOKEN_RECORDING_ON; | |
503 | tokens[1] = TOKEN_RECORDING_OFF; | |
504 | } else { | |
505 | tokens[0] = TOKEN_RECORDING_OFF; | |
506 | tokens[1] = TOKEN_RECORDING_ON; | |
507 | } | |
508 | tokens[2] = -1; | |
509 | ||
510 | if (devc->recording == -1) { | |
511 | /* Didn't pick up device state yet. */ | |
512 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
513 | return SR_ERR; | |
514 | if (devc->token == tokens[0]) | |
515 | /* Nothing to do. */ | |
516 | return SR_OK; | |
517 | } else if (devc->recording == state) | |
518 | /* Nothing to do. */ | |
519 | return SR_OK; | |
520 | ||
521 | /* Recording state notifications are sent at 2Hz, so allow just over | |
522 | * that, 510ms, for the state to come in. */ | |
523 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_RECORDING, tokens, 510); | |
524 | ||
525 | return ret; | |
526 | } | |
527 | ||
528 | SR_PRIV int cem_dt_885x_weight_freq_get(const struct sr_dev_inst *sdi) | |
529 | { | |
530 | struct dev_context *devc; | |
531 | int cur_setting; | |
532 | int8_t tokens[5]; | |
533 | ||
534 | devc = sdi->priv; | |
535 | ||
536 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
537 | if (cur_setting == 0) { | |
538 | /* Didn't pick up device state yet. */ | |
539 | tokens[0] = TOKEN_WEIGHT_FREQ_A; | |
540 | tokens[1] = TOKEN_WEIGHT_FREQ_C; | |
541 | tokens[2] = -1; | |
542 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
543 | return SR_ERR; | |
544 | if (devc->token == TOKEN_WEIGHT_FREQ_A) | |
545 | return SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
546 | else | |
547 | return SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
548 | } else | |
549 | return cur_setting; | |
550 | } | |
551 | ||
552 | SR_PRIV int cem_dt_885x_weight_freq_set(const struct sr_dev_inst *sdi, int freqw) | |
553 | { | |
554 | struct dev_context *devc; | |
555 | int cur_setting, ret; | |
556 | int8_t tokens[5]; | |
557 | ||
558 | devc = sdi->priv; | |
559 | ||
560 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
561 | if (cur_setting == freqw) | |
562 | /* Already set to this frequency weighting. */ | |
563 | return SR_OK; | |
564 | ||
565 | /* The toggle below needs the desired state in first position. */ | |
566 | if (freqw == SR_MQFLAG_SPL_FREQ_WEIGHT_A) { | |
567 | tokens[0] = TOKEN_WEIGHT_FREQ_A; | |
568 | tokens[1] = TOKEN_WEIGHT_FREQ_C; | |
569 | } else { | |
570 | tokens[0] = TOKEN_WEIGHT_FREQ_C; | |
571 | tokens[1] = TOKEN_WEIGHT_FREQ_A; | |
572 | } | |
573 | tokens[2] = -1; | |
574 | ||
575 | if (cur_setting == 0) { | |
576 | /* Didn't pick up device state yet. */ | |
577 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
578 | return SR_ERR; | |
579 | if (devc->token == tokens[0]) | |
580 | /* Nothing to do. */ | |
581 | return SR_OK; | |
582 | } | |
583 | ||
584 | /* 10ms timeout seems to work best for this. */ | |
585 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_WEIGHT_FREQ, tokens, 10); | |
586 | ||
587 | return ret; | |
588 | } | |
589 | ||
590 | SR_PRIV int cem_dt_885x_weight_time_get(const struct sr_dev_inst *sdi) | |
591 | { | |
592 | struct dev_context *devc; | |
593 | int cur_setting; | |
594 | int8_t tokens[5]; | |
595 | ||
596 | devc = sdi->priv; | |
597 | ||
598 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
599 | if (cur_setting == 0) { | |
600 | /* Didn't pick up device state yet. */ | |
601 | tokens[0] = TOKEN_WEIGHT_TIME_FAST; | |
602 | tokens[1] = TOKEN_WEIGHT_TIME_SLOW; | |
603 | tokens[2] = -1; | |
604 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
605 | return SR_ERR; | |
606 | if (devc->token == TOKEN_WEIGHT_TIME_FAST) | |
607 | return SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
608 | else | |
609 | return SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
610 | } else | |
611 | return cur_setting; | |
612 | } | |
613 | ||
614 | SR_PRIV int cem_dt_885x_weight_time_set(const struct sr_dev_inst *sdi, int timew) | |
615 | { | |
616 | struct dev_context *devc; | |
617 | int cur_setting, ret; | |
618 | int8_t tokens[5]; | |
619 | ||
620 | devc = sdi->priv; | |
621 | ||
622 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
623 | if (cur_setting == timew) | |
624 | /* Already set to this time weighting. */ | |
625 | return SR_OK; | |
626 | ||
627 | /* The toggle below needs the desired state in first position. */ | |
628 | if (timew == SR_MQFLAG_SPL_TIME_WEIGHT_F) { | |
629 | tokens[0] = TOKEN_WEIGHT_TIME_FAST; | |
630 | tokens[1] = TOKEN_WEIGHT_TIME_SLOW; | |
631 | } else { | |
632 | tokens[0] = TOKEN_WEIGHT_TIME_SLOW; | |
633 | tokens[1] = TOKEN_WEIGHT_TIME_FAST; | |
634 | } | |
635 | tokens[2] = -1; | |
636 | ||
637 | if (cur_setting == 0) { | |
638 | /* Didn't pick up device state yet. */ | |
639 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
640 | return SR_ERR; | |
641 | if (devc->token == tokens[0]) | |
642 | /* Nothing to do. */ | |
643 | return SR_OK; | |
644 | } | |
645 | ||
646 | /* 51ms timeout seems to work best for this. */ | |
647 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_WEIGHT_TIME, tokens, 51); | |
648 | ||
649 | return ret; | |
650 | } | |
651 | ||
652 | SR_PRIV int cem_dt_885x_holdmode_get(const struct sr_dev_inst *sdi, | |
653 | gboolean *holdmode) | |
654 | { | |
655 | struct dev_context *devc; | |
656 | int8_t tokens[5]; | |
657 | ||
658 | devc = sdi->priv; | |
659 | ||
660 | if (devc->cur_mqflags == 0) { | |
661 | tokens[0] = TOKEN_HOLD_MAX; | |
662 | tokens[1] = TOKEN_HOLD_MIN; | |
663 | tokens[2] = TOKEN_HOLD_NONE; | |
664 | tokens[3] = -1; | |
665 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
666 | return SR_ERR; | |
667 | if (devc->token == TOKEN_HOLD_MAX) | |
668 | devc->cur_mqflags = SR_MQFLAG_MAX; | |
669 | else if (devc->token == TOKEN_HOLD_MIN) | |
670 | devc->cur_mqflags = SR_MQFLAG_MIN; | |
671 | } | |
672 | *holdmode = devc->cur_mqflags & (SR_MQFLAG_MAX | SR_MQFLAG_MIN); | |
673 | ||
674 | return SR_OK; | |
675 | } | |
676 | ||
677 | SR_PRIV int cem_dt_885x_holdmode_set(const struct sr_dev_inst *sdi, int holdmode) | |
678 | { | |
679 | struct dev_context *devc; | |
680 | int cur_setting, ret; | |
681 | int8_t tokens[5]; | |
682 | ||
683 | devc = sdi->priv; | |
684 | ||
685 | /* The toggle below needs the desired state in first position. */ | |
686 | if (holdmode == SR_MQFLAG_MAX) { | |
687 | tokens[0] = TOKEN_HOLD_MAX; | |
688 | tokens[1] = TOKEN_HOLD_MIN; | |
689 | tokens[2] = TOKEN_HOLD_NONE; | |
690 | } else if (holdmode == SR_MQFLAG_MIN) { | |
691 | tokens[0] = TOKEN_HOLD_MIN; | |
692 | tokens[1] = TOKEN_HOLD_MAX; | |
693 | tokens[2] = TOKEN_HOLD_NONE; | |
694 | } else { | |
695 | tokens[0] = TOKEN_HOLD_NONE; | |
696 | tokens[1] = TOKEN_HOLD_MAX; | |
697 | tokens[2] = TOKEN_HOLD_MIN; | |
698 | } | |
699 | tokens[3] = -1; | |
700 | ||
701 | if (devc->cur_mqflags == 0) { | |
702 | /* Didn't pick up device state yet. */ | |
703 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
704 | return SR_ERR; | |
705 | if (devc->token == tokens[0]) | |
706 | /* Nothing to do. */ | |
707 | return SR_OK; | |
708 | } else { | |
709 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_MAX | SR_MQFLAG_MIN); | |
710 | if (cur_setting == holdmode) | |
711 | /* Already set correctly. */ | |
712 | return SR_OK; | |
713 | } | |
714 | ||
715 | /* 51ms timeout seems to work best for this. */ | |
716 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_HOLD_MAX_MIN, tokens, 51); | |
717 | ||
718 | return ret; | |
719 | } | |
720 | ||
721 | SR_PRIV int cem_dt_885x_meas_range_get(const struct sr_dev_inst *sdi, | |
722 | uint64_t *low, uint64_t *high) | |
723 | { | |
724 | struct dev_context *devc; | |
725 | int8_t tokens[5]; | |
726 | ||
727 | devc = sdi->priv; | |
728 | if (devc->cur_meas_range == 0) { | |
729 | tokens[0] = TOKEN_MEAS_RANGE_30_130; | |
730 | tokens[1] = TOKEN_MEAS_RANGE_30_80; | |
731 | tokens[2] = TOKEN_MEAS_RANGE_50_100; | |
732 | tokens[3] = TOKEN_MEAS_RANGE_80_130; | |
733 | tokens[4] = -1; | |
734 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
735 | return SR_ERR; | |
736 | devc->cur_meas_range = devc->token; | |
737 | } | |
738 | ||
739 | switch (devc->cur_meas_range) { | |
740 | case TOKEN_MEAS_RANGE_30_130: | |
741 | *low = 30; | |
742 | *high = 130; | |
743 | break; | |
744 | case TOKEN_MEAS_RANGE_30_80: | |
745 | *low = 30; | |
746 | *high = 80; | |
747 | break; | |
748 | case TOKEN_MEAS_RANGE_50_100: | |
749 | *low = 50; | |
750 | *high = 100; | |
751 | break; | |
752 | case TOKEN_MEAS_RANGE_80_130: | |
753 | *low = 80; | |
754 | *high = 130; | |
755 | break; | |
756 | default: | |
757 | return SR_ERR; | |
758 | } | |
759 | ||
760 | return SR_OK; | |
761 | } | |
762 | ||
763 | SR_PRIV int cem_dt_885x_meas_range_set(const struct sr_dev_inst *sdi, | |
764 | uint64_t low, uint64_t high) | |
765 | { | |
766 | struct dev_context *devc; | |
767 | int ret; | |
768 | int8_t token, tokens[6]; | |
769 | ||
770 | devc = sdi->priv; | |
771 | if (low == 30 && high == 130) | |
772 | token = TOKEN_MEAS_RANGE_30_130; | |
773 | else if (low == 30 && high == 80) | |
774 | token = TOKEN_MEAS_RANGE_30_80; | |
775 | else if (low == 50 && high == 100) | |
776 | token = TOKEN_MEAS_RANGE_50_100; | |
777 | else if (low == 80 && high == 130) | |
778 | token = TOKEN_MEAS_RANGE_80_130; | |
779 | else | |
780 | return SR_ERR; | |
781 | ||
782 | sr_dbg("want 0x%.2x", token); | |
783 | /* The toggle below needs the desired state in first position. */ | |
784 | tokens[0] = token; | |
785 | tokens[1] = TOKEN_MEAS_RANGE_30_130; | |
786 | tokens[2] = TOKEN_MEAS_RANGE_30_80; | |
787 | tokens[3] = TOKEN_MEAS_RANGE_50_100; | |
788 | tokens[4] = TOKEN_MEAS_RANGE_80_130; | |
789 | tokens[5] = -1; | |
790 | ||
791 | if (devc->cur_meas_range == 0) { | |
792 | /* 110ms should be enough for two of these announcements */ | |
793 | if (wait_for_token(sdi, tokens, 110) != SR_OK) | |
794 | return SR_ERR; | |
795 | devc->cur_meas_range = devc->token; | |
796 | } | |
797 | ||
798 | if (devc->cur_meas_range == token) | |
799 | /* Already set to this range. */ | |
800 | return SR_OK; | |
801 | ||
802 | /* For measurement range, it works best to ignore announcements of the | |
803 | * current setting and keep resending the toggle quickly. */ | |
804 | tokens[1] = -1; | |
805 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_MEAS_RANGE, tokens, 11); | |
806 | ||
807 | return ret; | |
808 | } | |
809 | ||
810 | SR_PRIV int cem_dt_885x_power_off(const struct sr_dev_inst *sdi) | |
811 | { | |
812 | struct sr_serial_dev_inst *serial; | |
813 | char c, cmd; | |
814 | ||
815 | serial = sdi->conn; | |
816 | ||
817 | cmd = CMD_TOGGLE_POWER_OFF; | |
818 | while (TRUE) { | |
819 | serial_flush(serial); | |
820 | if (serial_write_nonblocking(serial, (const void *)&cmd, 1) != 1) | |
821 | return SR_ERR; | |
822 | /* It never takes more than 23ms for the next token to arrive. */ | |
823 | g_usleep(25 * 1000); | |
824 | if (serial_read_nonblocking(serial, &c, 1) != 1) | |
825 | /* Device is no longer responding. Good! */ | |
826 | break; | |
827 | } | |
828 | ||
829 | /* In case the user manually turns on the device again, reset | |
830 | * the port back to blocking. */ | |
831 | serial_close(serial); | |
832 | serial_open(serial, SERIAL_RDWR); | |
833 | ||
834 | return SR_OK; | |
835 | } |