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8fa9368e 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 | ||
e37c4b39 | 20 | #include <string.h> |
8fa9368e BV |
21 | #include "protocol.h" |
22 | ||
e37c4b39 BV |
23 | /* Length of expected payload for each token. */ |
24 | static int token_payloads[][2] = { | |
25 | { TOKEN_WEIGHT_TIME_FAST, 0 }, | |
26 | { TOKEN_WEIGHT_TIME_SLOW, 0 }, | |
27 | { TOKEN_HOLD_MAX, 0 }, | |
28 | { TOKEN_HOLD_MIN, 0 }, | |
29 | { TOKEN_TIME, 3 }, | |
30 | { TOKEN_MEAS_RANGE_OVER, 0 }, | |
31 | { TOKEN_MEAS_RANGE_UNDER, 0 }, | |
32 | { TOKEN_STORE_FULL, 0 }, | |
33 | { TOKEN_RECORDING_ON, 0 }, | |
34 | { TOKEN_MEAS_WAS_READOUT, 1 }, | |
35 | { TOKEN_MEAS_WAS_BARGRAPH, 0 }, | |
36 | { TOKEN_MEASUREMENT, 2 }, | |
37 | { TOKEN_HOLD_NONE, 0 }, | |
38 | { TOKEN_BATTERY_LOW, 0 }, | |
39 | { TOKEN_MEAS_RANGE_OK, 0 }, | |
40 | { TOKEN_STORE_OK, 0 }, | |
41 | { TOKEN_RECORDING_OFF, 0 }, | |
42 | { TOKEN_WEIGHT_FREQ_A, 1 }, | |
43 | { TOKEN_WEIGHT_FREQ_C, 1 }, | |
44 | { TOKEN_BATTERY_OK, 0 }, | |
45 | { TOKEN_MEAS_RANGE_30_80, 0 }, | |
46 | { TOKEN_MEAS_RANGE_30_130, 0 }, | |
47 | { TOKEN_MEAS_RANGE_50_100, 0 }, | |
48 | { TOKEN_MEAS_RANGE_80_130, 0 }, | |
49 | }; | |
50 | ||
51 | static int find_token_payload_len(unsigned char c) | |
8fa9368e | 52 | { |
e37c4b39 | 53 | unsigned int i; |
8fa9368e | 54 | |
e37c4b39 BV |
55 | for (i = 0; i < ARRAY_SIZE(token_payloads); i++) { |
56 | if (token_payloads[i][0] == c) | |
57 | return token_payloads[i][1]; | |
58 | } | |
59 | ||
60 | return -1; | |
61 | } | |
62 | ||
63 | /* Process measurement or setting (0xa5 command). */ | |
64 | static void process_mset(const struct sr_dev_inst *sdi) | |
65 | { | |
8fa9368e | 66 | struct dev_context *devc; |
e37c4b39 BV |
67 | struct sr_datafeed_packet packet; |
68 | struct sr_datafeed_analog analog; | |
69 | GString *dbg; | |
70 | float fvalue; | |
71 | int i; | |
8fa9368e | 72 | |
e37c4b39 BV |
73 | devc = sdi->priv; |
74 | if (sr_log_loglevel_get() >= SR_LOG_SPEW) { | |
75 | dbg = g_string_sized_new(128); | |
76 | g_string_printf(dbg, "got command 0x%.2x token 0x%.2x", | |
77 | devc->cmd, devc->token); | |
78 | if (devc->buf_len) { | |
79 | g_string_append_printf(dbg, " payload"); | |
80 | for (i = 0; i < devc->buf_len; i++) | |
81 | g_string_append_printf(dbg, " %.2x", devc->buf[i]); | |
82 | } | |
83 | sr_spew("%s", dbg->str); | |
84 | g_string_free(dbg, TRUE); | |
85 | } | |
86 | ||
87 | switch(devc->token) { | |
88 | case TOKEN_WEIGHT_TIME_FAST: | |
89 | devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
90 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
91 | break; | |
92 | case TOKEN_WEIGHT_TIME_SLOW: | |
93 | devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
94 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
95 | break; | |
96 | case TOKEN_WEIGHT_FREQ_A: | |
97 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
98 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
99 | break; | |
100 | case TOKEN_WEIGHT_FREQ_C: | |
101 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
102 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
103 | break; | |
104 | case TOKEN_HOLD_MAX: | |
105 | devc->cur_mqflags |= SR_MQFLAG_HOLD | SR_MQFLAG_MAX; | |
106 | devc->cur_mqflags &= ~SR_MQFLAG_MIN; | |
107 | break; | |
108 | case TOKEN_HOLD_MIN: | |
109 | devc->cur_mqflags |= SR_MQFLAG_HOLD | SR_MQFLAG_MIN; | |
110 | devc->cur_mqflags &= ~SR_MQFLAG_MAX; | |
111 | break; | |
112 | case TOKEN_HOLD_NONE: | |
113 | devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN | SR_MQFLAG_HOLD); | |
114 | break; | |
115 | case TOKEN_MEASUREMENT: | |
116 | fvalue = ((devc->buf[0] & 0xf0) >> 4) * 100; | |
117 | fvalue += (devc->buf[0] & 0x0f) * 10; | |
118 | fvalue += ((devc->buf[1] & 0xf0) >> 4); | |
119 | fvalue += (devc->buf[1] & 0x0f) / 10.0; | |
bc114328 BV |
120 | devc->last_spl = fvalue; |
121 | break; | |
122 | case TOKEN_MEAS_WAS_READOUT: | |
123 | case TOKEN_MEAS_WAS_BARGRAPH: | |
124 | if (devc->cur_mqflags & (SR_MQFLAG_MAX | SR_MQFLAG_MIN)) { | |
125 | if (devc->token == TOKEN_MEAS_WAS_BARGRAPH) { | |
126 | /* The device still sends bargraph measurements even | |
127 | * when in max/min hold mode. Suppress them here, unless | |
128 | * they're readout values. This duplicates the behavior | |
129 | * of the device display exactly. */ | |
130 | break; | |
131 | } | |
132 | } | |
e37c4b39 BV |
133 | memset(&analog, 0, sizeof(struct sr_datafeed_analog)); |
134 | analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL; | |
135 | analog.mqflags = devc->cur_mqflags; | |
136 | analog.unit = SR_UNIT_DECIBEL_SPL; | |
137 | analog.probes = sdi->probes; | |
138 | analog.num_samples = 1; | |
bc114328 | 139 | analog.data = &devc->last_spl; |
e37c4b39 BV |
140 | packet.type = SR_DF_ANALOG; |
141 | packet.payload = &analog; | |
142 | sr_session_send(devc->cb_data, &packet); | |
143 | ||
144 | devc->num_samples++; | |
145 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) | |
146 | sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi, | |
147 | devc->cb_data); | |
148 | break; | |
e1af0e85 BV |
149 | case TOKEN_RECORDING_ON: |
150 | devc->recording = TRUE; | |
151 | break; | |
152 | case TOKEN_RECORDING_OFF: | |
153 | devc->recording = FALSE; | |
154 | break; | |
f157b2ee BV |
155 | case TOKEN_MEAS_RANGE_30_80: |
156 | case TOKEN_MEAS_RANGE_30_130: | |
157 | case TOKEN_MEAS_RANGE_50_100: | |
158 | case TOKEN_MEAS_RANGE_80_130: | |
159 | devc->cur_meas_range = devc->token; | |
160 | break; | |
e37c4b39 BV |
161 | case TOKEN_TIME: |
162 | case TOKEN_STORE_OK: | |
163 | case TOKEN_STORE_FULL: | |
e37c4b39 BV |
164 | case TOKEN_BATTERY_OK: |
165 | case TOKEN_BATTERY_LOW: | |
166 | case TOKEN_MEAS_RANGE_OK: | |
167 | case TOKEN_MEAS_RANGE_OVER: | |
168 | case TOKEN_MEAS_RANGE_UNDER: | |
e37c4b39 BV |
169 | /* Not useful, or not expressable in sigrok. */ |
170 | break; | |
171 | } | |
172 | ||
173 | } | |
174 | ||
e1af0e85 BV |
175 | static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c, |
176 | int handle_packets) | |
e37c4b39 BV |
177 | { |
178 | struct dev_context *devc; | |
14cf708f | 179 | gint64 cur_time; |
e37c4b39 | 180 | int len; |
8fa9368e BV |
181 | |
182 | if (!(devc = sdi->priv)) | |
e37c4b39 BV |
183 | return; |
184 | ||
185 | if (c == 0xff) { | |
186 | /* Device is in hold mode */ | |
187 | devc->cur_mqflags |= SR_MQFLAG_HOLD; | |
188 | ||
14cf708f BV |
189 | if (devc->hold_last_sent == 0) { |
190 | /* First hold notification. */ | |
191 | devc->hold_last_sent = g_get_monotonic_time(); | |
192 | /* When the device leaves hold mode, it starts from scratch. */ | |
193 | devc->state = ST_INIT; | |
194 | } else { | |
195 | cur_time = g_get_monotonic_time(); | |
196 | if (cur_time - devc->hold_last_sent > HOLD_REPEAT_INTERVAL) { | |
197 | /* Force the last measurement out again. */ | |
198 | devc->cmd = 0xa5; | |
199 | devc->token = TOKEN_MEAS_WAS_READOUT; | |
e1af0e85 BV |
200 | if (handle_packets) |
201 | process_mset(sdi); | |
14cf708f BV |
202 | devc->hold_last_sent = cur_time; |
203 | } | |
204 | } | |
e37c4b39 | 205 | |
e37c4b39 BV |
206 | return; |
207 | } | |
208 | devc->cur_mqflags &= ~SR_MQFLAG_HOLD; | |
14cf708f | 209 | devc->hold_last_sent = 0; |
e37c4b39 BV |
210 | |
211 | if (devc->state == ST_INIT) { | |
212 | if (c == 0xa5) { | |
213 | devc->cmd = c; | |
214 | devc->token = 0x00; | |
215 | devc->state = ST_GET_TOKEN; | |
216 | } else if (c == 0xbb) { | |
217 | devc->cmd = c; | |
218 | devc->buf_len = 0; | |
219 | devc->state = ST_GET_LOG; | |
220 | } | |
221 | } else if (devc->state == ST_GET_TOKEN) { | |
222 | devc->token = c; | |
223 | devc->buf_len = 0; | |
224 | len = find_token_payload_len(devc->token); | |
225 | if (len == -1 || len > 0) { | |
226 | devc->buf_len = 0; | |
227 | devc->state = ST_GET_DATA; | |
228 | } else { | |
e1af0e85 BV |
229 | if (handle_packets) |
230 | process_mset(sdi); | |
e37c4b39 BV |
231 | devc->state = ST_INIT; |
232 | } | |
233 | } else if (devc->state == ST_GET_DATA) { | |
234 | len = find_token_payload_len(devc->token); | |
235 | if (len == -1) { | |
236 | /* We don't know this token. */ | |
237 | sr_dbg("Unknown 0xa5 token 0x%.2x", devc->token); | |
238 | if (c == 0xa5 || c == 0xbb) { | |
239 | /* Looks like a new command however. */ | |
e1af0e85 BV |
240 | if (handle_packets) |
241 | process_mset(sdi); | |
e37c4b39 BV |
242 | devc->state = ST_INIT; |
243 | } else { | |
244 | devc->buf[devc->buf_len++] = c; | |
245 | if (devc->buf_len > BUF_SIZE) { | |
246 | /* Shouldn't happen, ignore. */ | |
247 | devc->state = ST_INIT; | |
248 | } | |
249 | } | |
250 | } else { | |
251 | devc->buf[devc->buf_len++] = c; | |
252 | if (devc->buf_len == len) { | |
e1af0e85 BV |
253 | if (handle_packets) |
254 | process_mset(sdi); | |
e37c4b39 BV |
255 | devc->state = ST_INIT; |
256 | } else if (devc->buf_len > BUF_SIZE) { | |
257 | /* Shouldn't happen, ignore. */ | |
258 | devc->state = ST_INIT; | |
259 | } | |
260 | } | |
261 | } else if (devc->state == ST_GET_LOG) { | |
262 | } | |
263 | ||
264 | } | |
265 | ||
266 | SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data) | |
267 | { | |
268 | const struct sr_dev_inst *sdi; | |
269 | struct sr_serial_dev_inst *serial; | |
270 | unsigned char c; | |
271 | ||
272 | (void)fd; | |
273 | ||
274 | if (!(sdi = cb_data)) | |
8fa9368e BV |
275 | return TRUE; |
276 | ||
e37c4b39 | 277 | serial = sdi->conn; |
8fa9368e | 278 | if (revents == G_IO_IN) { |
e37c4b39 BV |
279 | if (serial_read(serial, &c, 1) != 1) |
280 | return TRUE; | |
e1af0e85 | 281 | process_byte(sdi, c, TRUE); |
8fa9368e BV |
282 | } |
283 | ||
284 | return TRUE; | |
285 | } | |
e1af0e85 BV |
286 | |
287 | ||
288 | static int wait_for_token(const struct sr_dev_inst *sdi, char *tokens, int timeout) | |
289 | { | |
290 | struct dev_context *devc; | |
291 | struct sr_serial_dev_inst *serial; | |
292 | gint64 start_time; | |
293 | int i; | |
294 | unsigned char c; | |
295 | ||
296 | serial = sdi->conn; | |
297 | devc = sdi->priv; | |
298 | devc->state = ST_INIT; | |
299 | start_time = g_get_monotonic_time() / 1000; | |
300 | while (TRUE) { | |
301 | if (serial_read(serial, &c, 1) != 1) | |
302 | /* Device might have gone away. */ | |
303 | return SR_ERR; | |
304 | process_byte(sdi, c, FALSE); | |
305 | if (devc->state != ST_INIT) | |
306 | /* Wait for a whole packet to get processed. */ | |
307 | continue; | |
308 | for (i = 0; tokens[i] != -1; i++) { | |
309 | if (devc->token == tokens[i]) { | |
310 | sr_spew("wait_for_token: got token 0x%.2x", devc->token); | |
311 | return SR_OK; | |
312 | } | |
313 | } | |
314 | if (timeout && g_get_monotonic_time() / 1000 - start_time > timeout) | |
315 | return SR_ERR_TIMEOUT; | |
316 | } | |
317 | ||
318 | return SR_OK; | |
319 | } | |
320 | ||
321 | /* cmd is the command to send, tokens are the tokens that denote the state | |
322 | * which the command affects. The first token is the desired state. */ | |
be733919 BV |
323 | SR_PRIV int cem_dt_885x_toggle(const struct sr_dev_inst *sdi, uint8_t cmd, |
324 | char *tokens, int timeout) | |
e1af0e85 BV |
325 | { |
326 | struct dev_context *devc; | |
327 | struct sr_serial_dev_inst *serial; | |
328 | ||
329 | serial = sdi->conn; | |
330 | devc = sdi->priv; | |
331 | ||
332 | /* The device doesn't respond to commands very well. The | |
333 | * only thing to do is wait for the token that will confirm | |
334 | * whether the command worked or not, and resend if needed. */ | |
335 | while (TRUE) { | |
336 | if (serial_write(serial, (const void *)&cmd, 1) != 1) | |
337 | return SR_ERR; | |
be733919 | 338 | if (wait_for_token(sdi, tokens, timeout) == SR_ERR) |
e1af0e85 BV |
339 | return SR_ERR; |
340 | if (devc->token == tokens[0]) | |
341 | /* It worked. */ | |
342 | break; | |
343 | } | |
344 | ||
345 | return SR_OK; | |
346 | } | |
347 | ||
0cd9107d BV |
348 | SR_PRIV gboolean cem_dt_885x_recording_get(const struct sr_dev_inst *sdi, |
349 | int *state) | |
e1af0e85 BV |
350 | { |
351 | struct dev_context *devc; | |
352 | char tokens[5]; | |
353 | ||
354 | devc = sdi->priv; | |
e1af0e85 BV |
355 | if (devc->recording == -1) { |
356 | /* Didn't pick up device state yet. */ | |
357 | tokens[0] = TOKEN_RECORDING_ON; | |
358 | tokens[1] = TOKEN_RECORDING_OFF; | |
359 | tokens[2] = -1; | |
0cd9107d | 360 | if (wait_for_token(sdi, tokens, 510) != SR_OK) |
e1af0e85 BV |
361 | return SR_ERR; |
362 | } | |
0cd9107d | 363 | *state = devc->token == TOKEN_RECORDING_ON; |
e1af0e85 | 364 | |
0cd9107d | 365 | return SR_OK; |
e1af0e85 BV |
366 | } |
367 | ||
0cd9107d BV |
368 | SR_PRIV int cem_dt_885x_recording_set(const struct sr_dev_inst *sdi, |
369 | gboolean state) | |
e1af0e85 BV |
370 | { |
371 | struct dev_context *devc; | |
372 | int ret; | |
373 | char tokens[5]; | |
374 | ||
375 | devc = sdi->priv; | |
376 | ||
377 | /* The toggle below needs the desired state in first position. */ | |
0cd9107d | 378 | if (state) { |
e1af0e85 BV |
379 | tokens[0] = TOKEN_RECORDING_ON; |
380 | tokens[1] = TOKEN_RECORDING_OFF; | |
381 | } else { | |
382 | tokens[0] = TOKEN_RECORDING_OFF; | |
383 | tokens[1] = TOKEN_RECORDING_ON; | |
384 | } | |
385 | tokens[2] = -1; | |
386 | ||
387 | if (devc->recording == -1) { | |
388 | /* Didn't pick up device state yet. */ | |
389 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
390 | return SR_ERR; | |
391 | if (devc->token == tokens[0]) | |
392 | /* Nothing to do. */ | |
393 | return SR_OK; | |
0cd9107d | 394 | } else if (devc->recording == state) |
e1af0e85 BV |
395 | /* Nothing to do. */ |
396 | return SR_OK; | |
397 | ||
be733919 BV |
398 | /* Recording state notifications are sent at 2Hz, so allow just over |
399 | * that, 510ms, for the state to come in. */ | |
400 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_RECORDING, tokens, 510); | |
401 | ||
402 | return ret; | |
403 | } | |
404 | ||
405 | SR_PRIV int cem_dt_885x_weight_freq_get(const struct sr_dev_inst *sdi) | |
406 | { | |
407 | struct dev_context *devc; | |
408 | int cur_setting; | |
409 | char tokens[5]; | |
410 | ||
411 | devc = sdi->priv; | |
412 | ||
413 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
414 | if (cur_setting == 0) { | |
415 | /* Didn't pick up device state yet. */ | |
416 | tokens[0] = TOKEN_WEIGHT_FREQ_A; | |
417 | tokens[1] = TOKEN_WEIGHT_FREQ_C; | |
418 | tokens[2] = -1; | |
419 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
420 | return SR_ERR; | |
421 | if (devc->token == TOKEN_WEIGHT_FREQ_A) | |
422 | return SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
423 | else | |
424 | return SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
425 | } else | |
426 | return cur_setting; | |
427 | ||
428 | } | |
429 | ||
430 | SR_PRIV int cem_dt_885x_weight_freq_set(const struct sr_dev_inst *sdi, int freqw) | |
431 | { | |
432 | struct dev_context *devc; | |
433 | int cur_setting, ret; | |
434 | char tokens[5]; | |
435 | ||
436 | devc = sdi->priv; | |
437 | ||
438 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
439 | if (cur_setting == freqw) | |
440 | /* Already set to this frequency weighting. */ | |
441 | return SR_OK; | |
442 | ||
443 | /* The toggle below needs the desired state in first position. */ | |
444 | if (freqw == SR_MQFLAG_SPL_FREQ_WEIGHT_A) { | |
445 | tokens[0] = TOKEN_WEIGHT_FREQ_A; | |
446 | tokens[1] = TOKEN_WEIGHT_FREQ_C; | |
447 | } else { | |
448 | tokens[0] = TOKEN_WEIGHT_FREQ_C; | |
449 | tokens[1] = TOKEN_WEIGHT_FREQ_A; | |
450 | } | |
451 | tokens[2] = -1; | |
452 | ||
453 | if (cur_setting == 0) { | |
454 | /* Didn't pick up device state yet. */ | |
455 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
456 | return SR_ERR; | |
457 | if (devc->token == tokens[0]) | |
458 | /* Nothing to do. */ | |
459 | return SR_OK; | |
460 | } | |
461 | ||
462 | /* 10ms timeout seems to work best for this. */ | |
463 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_WEIGHT_FREQ, tokens, 10); | |
e1af0e85 BV |
464 | |
465 | return ret; | |
466 | } | |
1487ce4f BV |
467 | |
468 | SR_PRIV int cem_dt_885x_weight_time_get(const struct sr_dev_inst *sdi) | |
469 | { | |
470 | struct dev_context *devc; | |
471 | int cur_setting; | |
472 | char tokens[5]; | |
473 | ||
474 | devc = sdi->priv; | |
475 | ||
476 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
477 | if (cur_setting == 0) { | |
478 | /* Didn't pick up device state yet. */ | |
479 | tokens[0] = TOKEN_WEIGHT_TIME_FAST; | |
480 | tokens[1] = TOKEN_WEIGHT_TIME_SLOW; | |
481 | tokens[2] = -1; | |
482 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
483 | return SR_ERR; | |
484 | if (devc->token == TOKEN_WEIGHT_TIME_FAST) | |
485 | return SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
486 | else | |
487 | return SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
488 | } else | |
489 | return cur_setting; | |
490 | ||
491 | } | |
492 | ||
493 | SR_PRIV int cem_dt_885x_weight_time_set(const struct sr_dev_inst *sdi, int timew) | |
494 | { | |
495 | struct dev_context *devc; | |
496 | int cur_setting, ret; | |
497 | char tokens[5]; | |
498 | ||
499 | devc = sdi->priv; | |
500 | ||
501 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
502 | if (cur_setting == timew) | |
503 | /* Already set to this time weighting. */ | |
504 | return SR_OK; | |
505 | ||
506 | /* The toggle below needs the desired state in first position. */ | |
507 | if (timew == SR_MQFLAG_SPL_TIME_WEIGHT_F) { | |
508 | tokens[0] = TOKEN_WEIGHT_TIME_FAST; | |
509 | tokens[1] = TOKEN_WEIGHT_TIME_SLOW; | |
510 | } else { | |
511 | tokens[0] = TOKEN_WEIGHT_TIME_SLOW; | |
512 | tokens[1] = TOKEN_WEIGHT_TIME_FAST; | |
513 | } | |
514 | tokens[2] = -1; | |
515 | ||
516 | if (cur_setting == 0) { | |
517 | /* Didn't pick up device state yet. */ | |
518 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
519 | return SR_ERR; | |
520 | if (devc->token == tokens[0]) | |
521 | /* Nothing to do. */ | |
522 | return SR_OK; | |
523 | } | |
524 | ||
525 | /* 51ms timeout seems to work best for this. */ | |
526 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_WEIGHT_TIME, tokens, 51); | |
527 | ||
528 | return ret; | |
529 | } | |
a90e480c BV |
530 | |
531 | SR_PRIV int cem_dt_885x_holdmode_get(const struct sr_dev_inst *sdi, | |
532 | gboolean *holdmode) | |
533 | { | |
534 | struct dev_context *devc; | |
535 | char tokens[5]; | |
536 | ||
537 | devc = sdi->priv; | |
538 | ||
539 | if (devc->cur_mqflags == 0) { | |
540 | tokens[0] = TOKEN_HOLD_MAX; | |
541 | tokens[1] = TOKEN_HOLD_MIN; | |
542 | tokens[2] = TOKEN_HOLD_NONE; | |
543 | tokens[3] = -1; | |
544 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
545 | return SR_ERR; | |
546 | if (devc->token == TOKEN_HOLD_MAX) | |
547 | devc->cur_mqflags = SR_MQFLAG_MAX; | |
548 | else if (devc->token == TOKEN_HOLD_MIN) | |
549 | devc->cur_mqflags = SR_MQFLAG_MIN; | |
550 | } | |
551 | *holdmode = devc->cur_mqflags & (SR_MQFLAG_MAX | SR_MQFLAG_MIN); | |
552 | ||
553 | return SR_OK; | |
554 | } | |
555 | ||
556 | SR_PRIV int cem_dt_885x_holdmode_set(const struct sr_dev_inst *sdi, int holdmode) | |
557 | { | |
558 | struct dev_context *devc; | |
559 | int cur_setting, ret; | |
560 | char tokens[5]; | |
561 | ||
562 | devc = sdi->priv; | |
563 | ||
564 | /* The toggle below needs the desired state in first position. */ | |
565 | if (holdmode == SR_MQFLAG_MAX) { | |
566 | tokens[0] = TOKEN_HOLD_MAX; | |
567 | tokens[1] = TOKEN_HOLD_MIN; | |
568 | tokens[2] = TOKEN_HOLD_NONE; | |
569 | } else if (holdmode == SR_MQFLAG_MIN) { | |
570 | tokens[0] = TOKEN_HOLD_MIN; | |
571 | tokens[1] = TOKEN_HOLD_MAX; | |
572 | tokens[2] = TOKEN_HOLD_NONE; | |
573 | } else { | |
574 | tokens[0] = TOKEN_HOLD_NONE; | |
575 | tokens[1] = TOKEN_HOLD_MAX; | |
576 | tokens[2] = TOKEN_HOLD_MIN; | |
577 | } | |
578 | tokens[3] = -1; | |
579 | ||
580 | if (devc->cur_mqflags == 0) { | |
581 | /* Didn't pick up device state yet. */ | |
582 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
583 | return SR_ERR; | |
584 | if (devc->token == tokens[0]) | |
585 | /* Nothing to do. */ | |
586 | return SR_OK; | |
587 | } else { | |
588 | cur_setting = devc->cur_mqflags & (SR_MQFLAG_MAX | SR_MQFLAG_MIN); | |
589 | if (cur_setting == holdmode) | |
590 | /* Already set correctly. */ | |
591 | return SR_OK; | |
592 | } | |
593 | ||
594 | /* 51ms timeout seems to work best for this. */ | |
595 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_HOLD_MAX_MIN, tokens, 51); | |
596 | ||
597 | return ret; | |
598 | } | |
f157b2ee BV |
599 | |
600 | SR_PRIV int cem_dt_885x_meas_range_get(const struct sr_dev_inst *sdi, | |
601 | uint64_t *low, uint64_t *high) | |
602 | { | |
603 | struct dev_context *devc; | |
604 | char tokens[5]; | |
605 | ||
606 | devc = sdi->priv; | |
607 | if (devc->cur_meas_range == 0) { | |
608 | tokens[0] = TOKEN_MEAS_RANGE_30_130; | |
609 | tokens[1] = TOKEN_MEAS_RANGE_30_80; | |
610 | tokens[2] = TOKEN_MEAS_RANGE_50_100; | |
611 | tokens[3] = TOKEN_MEAS_RANGE_80_130; | |
612 | tokens[4] = -1; | |
613 | if (wait_for_token(sdi, tokens, 0) != SR_OK) | |
614 | return SR_ERR; | |
615 | devc->cur_meas_range = devc->token; | |
616 | } | |
617 | ||
618 | switch (devc->cur_meas_range) { | |
619 | case TOKEN_MEAS_RANGE_30_130: | |
620 | *low = 30; | |
621 | *high = 130; | |
622 | break; | |
623 | case TOKEN_MEAS_RANGE_30_80: | |
624 | *low = 30; | |
625 | *high = 80; | |
626 | break; | |
627 | case TOKEN_MEAS_RANGE_50_100: | |
628 | *low = 50; | |
629 | *high = 100; | |
630 | break; | |
631 | case TOKEN_MEAS_RANGE_80_130: | |
632 | *low = 80; | |
633 | *high = 130; | |
634 | break; | |
635 | default: | |
636 | return SR_ERR; | |
637 | } | |
638 | ||
639 | return SR_OK; | |
640 | } | |
641 | ||
642 | SR_PRIV int cem_dt_885x_meas_range_set(const struct sr_dev_inst *sdi, | |
643 | uint64_t low, uint64_t high) | |
644 | { | |
645 | struct dev_context *devc; | |
646 | int ret; | |
647 | char token, tokens[6]; | |
648 | ||
649 | devc = sdi->priv; | |
650 | if (low == 30 && high == 130) | |
651 | token = TOKEN_MEAS_RANGE_30_130; | |
652 | else if (low == 30 && high == 80) | |
653 | token = TOKEN_MEAS_RANGE_30_80; | |
654 | else if (low == 50 && high == 100) | |
655 | token = TOKEN_MEAS_RANGE_50_100; | |
656 | else if (low == 80 && high == 130) | |
657 | token = TOKEN_MEAS_RANGE_80_130; | |
658 | else | |
659 | return SR_ERR; | |
660 | ||
661 | sr_dbg("want 0x%.2x", token); | |
662 | /* The toggle below needs the desired state in first position. */ | |
663 | tokens[0] = token; | |
664 | tokens[1] = TOKEN_MEAS_RANGE_30_130; | |
665 | tokens[2] = TOKEN_MEAS_RANGE_30_80; | |
666 | tokens[3] = TOKEN_MEAS_RANGE_50_100; | |
667 | tokens[4] = TOKEN_MEAS_RANGE_80_130; | |
668 | tokens[5] = -1; | |
669 | ||
670 | if (devc->cur_meas_range == 0) { | |
671 | /* 110ms should be enough for two of these announcements */ | |
672 | if (wait_for_token(sdi, tokens, 110) != SR_OK) | |
673 | return SR_ERR; | |
674 | devc->cur_meas_range = devc->token; | |
675 | } | |
676 | ||
677 | if (devc->cur_meas_range == token) | |
678 | /* Already set to this range. */ | |
679 | return SR_OK; | |
680 | ||
681 | /* For measurement range, it works best to ignore announcements of the | |
682 | * current setting and keep resending the toggle quickly. */ | |
683 | tokens[1] = -1; | |
684 | ret = cem_dt_885x_toggle(sdi, CMD_TOGGLE_MEAS_RANGE, tokens, 11); | |
685 | ||
686 | return ret; | |
687 | } |