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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2016 George Hopkins <george-hopkins@null.net> | |
5 | * Copyright (C) 2016 Matthieu Guillaumin <matthieu@guillaum.in> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <string.h> | |
23 | #include "protocol.h" | |
24 | ||
25 | static int send_command(const struct sr_dev_inst *sdi, uint16_t command) | |
26 | { | |
27 | struct sr_serial_dev_inst *serial; | |
28 | uint8_t buffer[2]; | |
29 | ||
30 | buffer[0] = command >> 8; | |
31 | buffer[1] = command; | |
32 | ||
33 | if (!(serial = sdi->conn)) | |
34 | return SR_ERR; | |
35 | ||
36 | return serial_write_blocking(serial, (const void *)buffer, 2, 0); | |
37 | } | |
38 | ||
39 | static int send_long_command(const struct sr_dev_inst *sdi, uint32_t command) | |
40 | { | |
41 | struct sr_serial_dev_inst *serial; | |
42 | uint8_t buffer[4]; | |
43 | ||
44 | buffer[0] = command >> 24; | |
45 | buffer[1] = command >> 16; | |
46 | buffer[2] = command >> 8; | |
47 | buffer[3] = command; | |
48 | ||
49 | if (!(serial = sdi->conn)) | |
50 | return SR_ERR; | |
51 | ||
52 | return serial_write_blocking(serial, (const void *)buffer, 4, 0); | |
53 | } | |
54 | ||
55 | static void send_data(const struct sr_dev_inst *sdi, float sample) | |
56 | { | |
57 | struct dev_context *devc; | |
58 | struct sr_datafeed_packet packet; | |
59 | struct sr_datafeed_analog analog; | |
60 | struct sr_analog_encoding encoding; | |
61 | struct sr_analog_meaning meaning; | |
62 | struct sr_analog_spec spec; | |
63 | ||
64 | devc = sdi->priv; | |
65 | ||
66 | sr_analog_init(&analog, &encoding, &meaning, &spec, 1); | |
67 | meaning.mq = SR_MQ_SOUND_PRESSURE_LEVEL; | |
68 | meaning.mqflags = devc->cur_mqflags; | |
69 | meaning.unit = SR_UNIT_DECIBEL_SPL; | |
70 | meaning.channels = sdi->channels; | |
71 | analog.num_samples = 1; | |
72 | analog.data = &sample; | |
73 | packet.type = SR_DF_ANALOG; | |
74 | packet.payload = &analog; | |
75 | sr_session_send(sdi, &packet); | |
76 | ||
77 | devc->num_samples++; | |
78 | /* Limiting number of samples is only supported for live data. */ | |
79 | if (devc->cur_data_source == DATA_SOURCE_LIVE && devc->limit_samples && devc->num_samples >= devc->limit_samples) | |
80 | sr_dev_acquisition_stop((struct sr_dev_inst *)sdi); | |
81 | } | |
82 | ||
83 | static void process_measurement(const struct sr_dev_inst *sdi) | |
84 | { | |
85 | struct dev_context *devc; | |
86 | unsigned short value; | |
87 | ||
88 | devc = sdi->priv; | |
89 | ||
90 | if (devc->buffer[3] & (1 << 0)) { | |
91 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
92 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
93 | } else { | |
94 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
95 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
96 | } | |
97 | ||
98 | if (devc->buffer[3] & (1 << 1)) { | |
99 | devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
100 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
101 | } else { | |
102 | devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
103 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
104 | } | |
105 | ||
106 | devc->cur_meas_range = devc->buffer[4] & 3; | |
107 | ||
108 | if (devc->buffer[4] & (1 << 2)) { | |
109 | devc->cur_mqflags |= SR_MQFLAG_MAX; | |
110 | devc->cur_mqflags &= ~SR_MQFLAG_MIN; | |
111 | } else if (devc->buffer[4] & (1 << 3)) { | |
112 | devc->cur_mqflags |= SR_MQFLAG_MIN; | |
113 | devc->cur_mqflags &= ~SR_MQFLAG_MAX; | |
114 | } else { | |
115 | devc->cur_mqflags &= ~SR_MQFLAG_MIN; | |
116 | devc->cur_mqflags &= ~SR_MQFLAG_MAX; | |
117 | } | |
118 | ||
119 | value = devc->buffer[1] << 8 | devc->buffer[2]; | |
120 | send_data(sdi, value / 10.0); | |
121 | } | |
122 | ||
123 | static void process_memory_measurement(const struct sr_dev_inst *sdi) | |
124 | { | |
125 | struct dev_context *devc; | |
126 | uint16_t value; | |
127 | ||
128 | devc = sdi->priv; | |
129 | value = devc->buffer[devc->buffer_len - 1] << 8; | |
130 | value |= devc->buffer[devc->buffer_len - 2]; | |
131 | ||
132 | send_data(sdi, value / 10.0); | |
133 | } | |
134 | ||
135 | static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c) | |
136 | { | |
137 | struct dev_context *devc; | |
138 | ||
139 | devc = sdi->priv; | |
140 | ||
141 | if (devc->buffer_len < BUFFER_SIZE) { | |
142 | devc->buffer[devc->buffer_len++] = c; | |
143 | } else { | |
144 | memmove(devc->buffer, devc->buffer + 1, BUFFER_SIZE - 1); | |
145 | devc->buffer[BUFFER_SIZE - 1] = c; | |
146 | } | |
147 | ||
148 | if (devc->buffer_len == BUFFER_SIZE && devc->buffer[0] == 0x7f | |
149 | && devc->buffer[BUFFER_SIZE - 1] == 0x00) { | |
150 | process_measurement(sdi); | |
151 | devc->buffer_len = 0; | |
152 | } | |
153 | } | |
154 | ||
155 | static void process_usage_byte(const struct sr_dev_inst *sdi, uint8_t c) | |
156 | { | |
157 | struct dev_context *devc; | |
158 | ||
159 | devc = sdi->priv; | |
160 | ||
161 | if (devc->buffer_len < MEM_USAGE_BUFFER_SIZE) { | |
162 | devc->buffer[devc->buffer_len++] = c; | |
163 | } else { | |
164 | memmove(devc->buffer, devc->buffer + 1, MEM_USAGE_BUFFER_SIZE - 1); | |
165 | devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] = c; | |
166 | } | |
167 | ||
168 | if (devc->buffer_len == MEM_USAGE_BUFFER_SIZE && devc->buffer[0] == 0xd1 | |
169 | && devc->buffer[1] == 0x05 && devc->buffer[2] == 0x00 | |
170 | && devc->buffer[3] == 0x01 && devc->buffer[4] == 0xd2 | |
171 | && devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] == 0x20) { | |
172 | devc->memory_block_usage = devc->buffer[5] << 8 | devc->buffer[6]; | |
173 | devc->memory_last_block_usage = devc->buffer[7]; | |
174 | sr_warn("Memory usage: %d blocks of 256 bytes, 1 block of %d bytes", | |
175 | devc->memory_block_usage - 1, devc->memory_last_block_usage); | |
176 | devc->buffer_len = 0; | |
177 | devc->buffer_skip = 1; | |
178 | devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK; | |
179 | devc->memory_block_cursor = 0; | |
180 | devc->memory_block_counter = 0; | |
181 | } | |
182 | } | |
183 | ||
184 | static void process_memory_byte(const struct sr_dev_inst *sdi, uint8_t c) | |
185 | { | |
186 | struct dev_context *devc; | |
187 | ||
188 | devc = sdi->priv; | |
189 | ||
190 | if (devc->buffer_len < MEM_DATA_BUFFER_SIZE) { | |
191 | devc->buffer[devc->buffer_len++] = c; | |
192 | } else { | |
193 | memmove(devc->buffer, devc->buffer + 1, MEM_DATA_BUFFER_SIZE - 1); | |
194 | devc->buffer[MEM_DATA_BUFFER_SIZE - 1] = c; | |
195 | } | |
196 | ||
197 | if (devc->buffer_skip == 0 \ | |
198 | && (devc->buffer[devc->buffer_len-2] & 0x7f) == 0x7f | |
199 | && (devc->buffer[devc->buffer_len-1] & 0xf7) == 0xf7) { | |
200 | /* Recording session header bytes found, load next 7 bytes. */ | |
201 | devc->buffer_skip = MEM_DATA_BUFFER_SIZE - 2; | |
202 | } | |
203 | ||
204 | if (devc->buffer_skip == 0 && devc->buffer_len == MEM_DATA_BUFFER_SIZE | |
205 | && (devc->buffer[0] & 0x7f) == 0x7f && (devc->buffer[1] & 0xf7) == 0xf7 | |
206 | && devc->buffer[2] == 0x01 && devc->buffer[3] == 0x00) { | |
207 | /* Print information about recording. */ | |
208 | sr_err("Recording dB(%X) %02x/%02x/%02x %02x:%02x:%02x ", | |
209 | devc->buffer[4], devc->buffer[5], devc->buffer[6], devc->buffer[7], | |
210 | devc->buffer[8] & 0x3f, devc->buffer[9], devc->buffer[10]); | |
211 | /* Set dBA/dBC flag for recording. */ | |
212 | if (devc->buffer[4] == 0x0c) { | |
213 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
214 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
215 | } else { | |
216 | devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
217 | devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
218 | } | |
219 | send_data(sdi, -1.0); /* Signal switch of recording. */ | |
220 | devc->buffer_skip = 2; | |
221 | } | |
222 | ||
223 | if (devc->buffer_skip == 0) { | |
224 | process_memory_measurement(sdi); | |
225 | devc->buffer_skip = 1; | |
226 | } else { | |
227 | devc->buffer_skip -= 1; | |
228 | } | |
229 | ||
230 | devc->memory_block_cursor++; /* uint8_t goes back to 0 after 255. */ | |
231 | if (devc->memory_block_cursor == 0) { | |
232 | /* Current block is completed. */ | |
233 | devc->memory_block_counter++; | |
234 | devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK; | |
235 | } | |
236 | } | |
237 | ||
238 | SR_PRIV int pce_322a_receive_data(int fd, int revents, void *cb_data) | |
239 | { | |
240 | const struct sr_dev_inst *sdi; | |
241 | struct dev_context *devc; | |
242 | struct sr_serial_dev_inst *serial; | |
243 | unsigned char c; | |
244 | ||
245 | (void)fd; | |
246 | ||
247 | if (!(sdi = cb_data)) | |
248 | return TRUE; | |
249 | ||
250 | if (!(devc = sdi->priv)) | |
251 | return TRUE; | |
252 | ||
253 | if (!(serial = sdi->conn)) | |
254 | return TRUE; | |
255 | ||
256 | if (devc->cur_data_source == DATA_SOURCE_MEMORY) { | |
257 | switch (devc->memory_state) { | |
258 | case MEM_STATE_REQUEST_MEMORY_USAGE: | |
259 | /* At init, disconnect and request the memory status. */ | |
260 | sr_warn("Requesting memory usage."); | |
261 | pce_322a_disconnect(sdi); | |
262 | devc->memory_state = MEM_STATE_GET_MEMORY_USAGE; | |
263 | devc->memory_block_usage = 0; | |
264 | devc->memory_last_block_usage = 0; | |
265 | devc->memory_block_counter = 0; | |
266 | devc->memory_block_cursor = 0; | |
267 | pce_322a_memory_status(sdi); | |
268 | break; | |
269 | case MEM_STATE_GET_MEMORY_USAGE: | |
270 | /* Listen for memory usage answer. */ | |
271 | if (revents == G_IO_IN) { | |
272 | if (serial_read_nonblocking(serial, &c, 1) != 1) | |
273 | return TRUE; | |
274 | process_usage_byte(sdi, c); | |
275 | } | |
276 | break; | |
277 | case MEM_STATE_REQUEST_MEMORY_BLOCK: | |
278 | /* When cursor is 0, request next memory block. */ | |
279 | if (devc->memory_block_counter <= devc->memory_block_usage) { | |
280 | sr_warn("Requesting memory block %d.", devc->memory_block_counter); | |
281 | pce_322a_memory_block(sdi, devc->memory_block_counter); | |
282 | devc->memory_state = MEM_STATE_GET_MEMORY_BLOCK; | |
283 | } else { | |
284 | sr_warn("Exhausted memory blocks."); | |
285 | return FALSE; | |
286 | } | |
287 | break; | |
288 | case MEM_STATE_GET_MEMORY_BLOCK: | |
289 | /* Stop after reading last byte of last block. */ | |
290 | if (devc->memory_block_counter >= devc->memory_block_usage | |
291 | && devc->memory_block_cursor >= devc->memory_last_block_usage) { | |
292 | sr_warn("Done reading memory (%d bytes).", | |
293 | 256 * (devc->memory_block_counter - 1) | |
294 | + devc->memory_block_cursor); | |
295 | return FALSE; | |
296 | } | |
297 | /* Listen for memory data. */ | |
298 | if (revents == G_IO_IN) { | |
299 | if (serial_read_nonblocking(serial, &c, 1) != 1) | |
300 | return TRUE; | |
301 | process_memory_byte(sdi, c); | |
302 | } | |
303 | break; | |
304 | } | |
305 | } else { | |
306 | /* Listen for live data. */ | |
307 | if (revents == G_IO_IN) { | |
308 | if (serial_read_nonblocking(serial, &c, 1) != 1) | |
309 | return TRUE; | |
310 | process_byte(sdi, c); | |
311 | } | |
312 | } | |
313 | ||
314 | return TRUE; | |
315 | } | |
316 | ||
317 | SR_PRIV int pce_322a_connect(const struct sr_dev_inst *sdi) | |
318 | { | |
319 | return send_command(sdi, CMD_CONNECT); | |
320 | } | |
321 | ||
322 | SR_PRIV int pce_322a_disconnect(const struct sr_dev_inst *sdi) | |
323 | { | |
324 | return send_command(sdi, CMD_DISCONNECT); | |
325 | } | |
326 | ||
327 | SR_PRIV int pce_322a_memory_status(const struct sr_dev_inst *sdi) | |
328 | { | |
329 | return send_command(sdi, CMD_MEMORY_STATUS); | |
330 | } | |
331 | ||
332 | SR_PRIV int pce_322a_memory_clear(const struct sr_dev_inst *sdi) | |
333 | { | |
334 | return send_command(sdi, CMD_MEMORY_CLEAR); | |
335 | } | |
336 | ||
337 | SR_PRIV int pce_322a_memory_block(const struct sr_dev_inst *sdi, uint16_t memblk) | |
338 | { | |
339 | uint8_t buf0 = memblk; | |
340 | uint8_t buf1 = memblk >> 8; | |
341 | uint32_t command = CMD_MEMORY_TRANSFER << 16 | buf0 << 8 | buf1; | |
342 | return send_long_command(sdi, command); | |
343 | } | |
344 | ||
345 | SR_PRIV uint64_t pce_322a_weight_freq_get(const struct sr_dev_inst *sdi) | |
346 | { | |
347 | struct dev_context *devc; | |
348 | ||
349 | devc = sdi->priv; | |
350 | ||
351 | return devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
352 | } | |
353 | ||
354 | SR_PRIV int pce_322a_weight_freq_set(const struct sr_dev_inst *sdi, uint64_t freqw) | |
355 | { | |
356 | struct dev_context *devc; | |
357 | ||
358 | devc = sdi->priv; | |
359 | ||
360 | if (devc->cur_mqflags & freqw) | |
361 | return SR_OK; | |
362 | ||
363 | return send_command(sdi, CMD_TOGGLE_WEIGHT_FREQ); | |
364 | } | |
365 | ||
366 | SR_PRIV uint64_t pce_322a_weight_time_get(const struct sr_dev_inst *sdi) | |
367 | { | |
368 | struct dev_context *devc; | |
369 | ||
370 | devc = sdi->priv; | |
371 | ||
372 | return devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
373 | } | |
374 | ||
375 | SR_PRIV int pce_322a_weight_time_set(const struct sr_dev_inst *sdi, uint64_t timew) | |
376 | { | |
377 | struct dev_context *devc; | |
378 | ||
379 | devc = sdi->priv; | |
380 | ||
381 | if (devc->cur_mqflags & timew) | |
382 | return SR_OK; | |
383 | ||
384 | return send_command(sdi, CMD_TOGGLE_WEIGHT_TIME); | |
385 | } | |
386 | ||
387 | SR_PRIV int pce_322a_meas_range_get(const struct sr_dev_inst *sdi, | |
388 | uint64_t *low, uint64_t *high) | |
389 | { | |
390 | struct dev_context *devc; | |
391 | ||
392 | devc = sdi->priv; | |
393 | ||
394 | switch (devc->cur_meas_range) { | |
395 | case MEAS_RANGE_30_130: | |
396 | *low = 30; | |
397 | *high = 130; | |
398 | break; | |
399 | case MEAS_RANGE_30_80: | |
400 | *low = 30; | |
401 | *high = 80; | |
402 | break; | |
403 | case MEAS_RANGE_50_100: | |
404 | *low = 50; | |
405 | *high = 100; | |
406 | break; | |
407 | case MEAS_RANGE_80_130: | |
408 | *low = 80; | |
409 | *high = 130; | |
410 | break; | |
411 | default: | |
412 | return SR_ERR; | |
413 | } | |
414 | ||
415 | return SR_OK; | |
416 | } | |
417 | ||
418 | SR_PRIV int pce_322a_meas_range_set(const struct sr_dev_inst *sdi, | |
419 | uint64_t low, uint64_t high) | |
420 | { | |
421 | struct dev_context *devc; | |
422 | uint8_t range; | |
423 | int ret = SR_OK; | |
424 | ||
425 | devc = sdi->priv; | |
426 | ||
427 | if (low == 30 && high == 130) | |
428 | range = MEAS_RANGE_30_130; | |
429 | else if (low == 30 && high == 80) | |
430 | range = MEAS_RANGE_30_80; | |
431 | else if (low == 50 && high == 100) | |
432 | range = MEAS_RANGE_50_100; | |
433 | else if (low == 80 && high == 130) | |
434 | range = MEAS_RANGE_80_130; | |
435 | else | |
436 | return SR_ERR; | |
437 | ||
438 | while (range != devc->cur_meas_range) { | |
439 | ret = send_command(sdi, CMD_TOGGLE_MEAS_RANGE); | |
440 | if (ret != SR_OK) | |
441 | break; | |
442 | range = (range - 1) & 3; | |
443 | } | |
444 | ||
445 | return ret; | |
446 | } | |
447 | ||
448 | SR_PRIV int pce_322a_power_off(const struct sr_dev_inst *sdi) | |
449 | { | |
450 | return send_command(sdi, CMD_POWER_OFF); | |
451 | } |