2 * This file is part of the libsigrok project.
4 * Copyright (C) 2016 George Hopkins <george-hopkins@null.net>
5 * Copyright (C) 2016 Matthieu Guillaumin <matthieu@guillaum.in>
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.
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.
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/>.
24 static int send_command(const struct sr_dev_inst *sdi, uint16_t command)
26 struct sr_serial_dev_inst *serial;
29 buffer[0] = command >> 8;
32 if (!(serial = sdi->conn))
35 return serial_write_blocking(serial, (const void *)buffer, 2, 0);
38 static int send_long_command(const struct sr_dev_inst *sdi, uint32_t command)
40 struct sr_serial_dev_inst *serial;
43 buffer[0] = command >> 24;
44 buffer[1] = command >> 16;
45 buffer[2] = command >> 8;
48 if (!(serial = sdi->conn))
51 return serial_write_blocking(serial, (const void *)buffer, 4, 0);
54 static void send_data(const struct sr_dev_inst *sdi, float sample)
56 struct dev_context *devc;
57 struct sr_datafeed_packet packet;
58 struct sr_datafeed_analog analog;
59 struct sr_analog_encoding encoding;
60 struct sr_analog_meaning meaning;
61 struct sr_analog_spec spec;
65 sr_analog_init(&analog, &encoding, &meaning, &spec, 1);
66 meaning.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
67 meaning.mqflags = devc->cur_mqflags;
68 meaning.unit = SR_UNIT_DECIBEL_SPL;
69 meaning.channels = sdi->channels;
70 analog.num_samples = 1;
71 analog.data = &sample;
72 packet.type = SR_DF_ANALOG;
73 packet.payload = &analog;
74 sr_session_send(sdi, &packet);
77 /* Limiting number of samples is only supported for live data. */
78 if (devc->cur_data_source == DATA_SOURCE_LIVE && devc->limit_samples && devc->num_samples >= devc->limit_samples)
79 sr_dev_acquisition_stop((struct sr_dev_inst *)sdi);
82 static void process_measurement(const struct sr_dev_inst *sdi)
84 struct dev_context *devc;
89 if (devc->buffer[3] & (1 << 0)) {
90 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C;
91 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A;
93 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
94 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
97 if (devc->buffer[3] & (1 << 1)) {
98 devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S;
99 devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_F;
101 devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F;
102 devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_S;
105 devc->cur_meas_range = devc->buffer[4] & 3;
107 if (devc->buffer[4] & (1 << 2)) {
108 devc->cur_mqflags |= SR_MQFLAG_MAX;
109 devc->cur_mqflags &= ~SR_MQFLAG_MIN;
110 } else if (devc->buffer[4] & (1 << 3)) {
111 devc->cur_mqflags |= SR_MQFLAG_MIN;
112 devc->cur_mqflags &= ~SR_MQFLAG_MAX;
114 devc->cur_mqflags &= ~SR_MQFLAG_MIN;
115 devc->cur_mqflags &= ~SR_MQFLAG_MAX;
118 value = devc->buffer[1] << 8 | devc->buffer[2];
119 send_data(sdi, value / 10.0);
122 static void process_memory_measurement(const struct sr_dev_inst *sdi)
124 struct dev_context *devc;
128 value = devc->buffer[devc->buffer_len - 1] << 8;
129 value |= devc->buffer[devc->buffer_len - 2];
131 send_data(sdi, value / 10.0);
134 static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c)
136 struct dev_context *devc;
141 if (devc->buffer_len < BUFFER_SIZE) {
142 devc->buffer[devc->buffer_len++] = c;
144 for (i = 1; i < BUFFER_SIZE; i++)
145 devc->buffer[i - 1] = devc->buffer[i];
146 devc->buffer[BUFFER_SIZE - 1] = c;
149 if (devc->buffer_len == BUFFER_SIZE && devc->buffer[0] == 0x7f
150 && devc->buffer[BUFFER_SIZE - 1] == 0x00) {
151 process_measurement(sdi);
152 devc->buffer_len = 0;
156 static void process_usage_byte(const struct sr_dev_inst *sdi, uint8_t c)
158 struct dev_context *devc;
163 if (devc->buffer_len < MEM_USAGE_BUFFER_SIZE) {
164 devc->buffer[devc->buffer_len++] = c;
166 for (i = 1; i < MEM_USAGE_BUFFER_SIZE; i++)
167 devc->buffer[i - 1] = devc->buffer[i];
168 devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] = c;
171 if (devc->buffer_len == MEM_USAGE_BUFFER_SIZE && devc->buffer[0] == 0xd1
172 && devc->buffer[1] == 0x05 && devc->buffer[2] == 0x00
173 && devc->buffer[3] == 0x01 && devc->buffer[4] == 0xd2
174 && devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] == 0x20) {
175 devc->memory_block_usage = devc->buffer[5] << 8 | devc->buffer[6];
176 devc->memory_last_block_usage = devc->buffer[7];
177 sr_warn("Memory usage: %d blocks of 256 bytes, 1 block of %d bytes",
178 devc->memory_block_usage - 1, devc->memory_last_block_usage);
179 devc->buffer_len = 0;
180 devc->buffer_skip = 1;
181 devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK;
182 devc->memory_block_cursor = 0;
183 devc->memory_block_counter = 0;
187 static void process_memory_byte(const struct sr_dev_inst *sdi, uint8_t c)
189 struct dev_context *devc;
194 if (devc->buffer_len < MEM_DATA_BUFFER_SIZE) {
195 devc->buffer[devc->buffer_len++] = c;
197 for (i = 1; i < MEM_DATA_BUFFER_SIZE; i++)
198 devc->buffer[i - 1] = devc->buffer[i];
199 devc->buffer[MEM_DATA_BUFFER_SIZE - 1] = c;
202 if (devc->buffer_skip == 0 \
203 && (devc->buffer[devc->buffer_len-2] & 0x7f) == 0x7f
204 && (devc->buffer[devc->buffer_len-1] & 0xf7) == 0xf7) {
205 /* Recording session header bytes found, load next 7 bytes. */
206 devc->buffer_skip = MEM_DATA_BUFFER_SIZE - 2;
209 if (devc->buffer_skip == 0 && devc->buffer_len == MEM_DATA_BUFFER_SIZE
210 && (devc->buffer[0] & 0x7f) == 0x7f && (devc->buffer[1] & 0xf7) == 0xf7
211 && devc->buffer[2] == 0x01 && devc->buffer[3] == 0x00) {
212 /* Print information about recording. */
213 sr_err("Recording dB(%X) %02x/%02x/%02x %02x:%02x:%02x ",
214 devc->buffer[4], devc->buffer[5], devc->buffer[6], devc->buffer[7],
215 devc->buffer[8] & 0x3f, devc->buffer[9], devc->buffer[10]);
216 /* Set dBA/dBC flag for recording. */
217 if (devc->buffer[4] == 0x0c) {
218 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C;
219 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A;
221 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
222 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
224 send_data(sdi, -1.0); /* Signal switch of recording. */
225 devc->buffer_skip = 2;
228 if (devc->buffer_skip == 0) {
229 process_memory_measurement(sdi);
230 devc->buffer_skip = 1;
232 devc->buffer_skip -= 1;
235 devc->memory_block_cursor++; /* uint8_t goes back to 0 after 255. */
236 if (devc->memory_block_cursor == 0) {
237 /* Current block is completed. */
238 devc->memory_block_counter++;
239 devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK;
243 SR_PRIV int pce_322a_receive_data(int fd, int revents, void *cb_data)
245 const struct sr_dev_inst *sdi;
246 struct dev_context *devc;
247 struct sr_serial_dev_inst *serial;
252 if (!(sdi = cb_data))
255 if (!(devc = sdi->priv))
258 if (!(serial = sdi->conn))
261 if (devc->cur_data_source == DATA_SOURCE_MEMORY) {
262 switch (devc->memory_state) {
263 case MEM_STATE_REQUEST_MEMORY_USAGE:
264 /* At init, disconnect and request the memory status. */
265 sr_warn("Requesting memory usage.");
266 pce_322a_disconnect(sdi);
267 devc->memory_state = MEM_STATE_GET_MEMORY_USAGE;
268 devc->memory_block_usage = 0;
269 devc->memory_last_block_usage = 0;
270 devc->memory_block_counter = 0;
271 devc->memory_block_cursor = 0;
272 pce_322a_memory_status(sdi);
274 case MEM_STATE_GET_MEMORY_USAGE:
275 /* Listen for memory usage answer. */
276 if (revents == G_IO_IN) {
277 if (serial_read_nonblocking(serial, &c, 1) != 1)
279 process_usage_byte(sdi, c);
282 case MEM_STATE_REQUEST_MEMORY_BLOCK:
283 /* When cursor is 0, request next memory block. */
284 if (devc->memory_block_counter <= devc->memory_block_usage) {
285 sr_warn("Requesting memory block %d.", devc->memory_block_counter);
286 pce_322a_memory_block(sdi, devc->memory_block_counter);
287 devc->memory_state = MEM_STATE_GET_MEMORY_BLOCK;
289 sr_warn("Exhausted memory blocks.");
293 case MEM_STATE_GET_MEMORY_BLOCK:
294 /* Stop after reading last byte of last block. */
295 if (devc->memory_block_counter >= devc->memory_block_usage
296 && devc->memory_block_cursor >= devc->memory_last_block_usage) {
297 sr_warn("Done reading memory (%d bytes).",
298 256 * (devc->memory_block_counter - 1)
299 + devc->memory_block_cursor);
302 /* Listen for memory data. */
303 if (revents == G_IO_IN) {
304 if (serial_read_nonblocking(serial, &c, 1) != 1)
306 process_memory_byte(sdi, c);
311 /* Listen for live data. */
312 if (revents == G_IO_IN) {
313 if (serial_read_nonblocking(serial, &c, 1) != 1)
315 process_byte(sdi, c);
322 SR_PRIV int pce_322a_connect(const struct sr_dev_inst *sdi)
324 return send_command(sdi, CMD_CONNECT);
327 SR_PRIV int pce_322a_disconnect(const struct sr_dev_inst *sdi)
329 return send_command(sdi, CMD_DISCONNECT);
332 SR_PRIV int pce_322a_memory_status(const struct sr_dev_inst *sdi)
334 return send_command(sdi, CMD_MEMORY_STATUS);
337 SR_PRIV int pce_322a_memory_clear(const struct sr_dev_inst *sdi)
339 return send_command(sdi, CMD_MEMORY_CLEAR);
342 SR_PRIV int pce_322a_memory_block(const struct sr_dev_inst *sdi, uint16_t memblk)
344 uint8_t buf0 = memblk;
345 uint8_t buf1 = memblk >> 8;
346 uint32_t command = CMD_MEMORY_TRANSFER << 16 | buf0 << 8 | buf1;
347 return send_long_command(sdi, command);
350 SR_PRIV uint64_t pce_322a_weight_freq_get(const struct sr_dev_inst *sdi)
352 struct dev_context *devc;
356 return devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C);
359 SR_PRIV int pce_322a_weight_freq_set(const struct sr_dev_inst *sdi, uint64_t freqw)
361 struct dev_context *devc;
365 if (devc->cur_mqflags & freqw)
368 return send_command(sdi, CMD_TOGGLE_WEIGHT_FREQ);
371 SR_PRIV uint64_t pce_322a_weight_time_get(const struct sr_dev_inst *sdi)
373 struct dev_context *devc;
377 return devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S);
380 SR_PRIV int pce_322a_weight_time_set(const struct sr_dev_inst *sdi, uint64_t timew)
382 struct dev_context *devc;
386 if (devc->cur_mqflags & timew)
389 return send_command(sdi, CMD_TOGGLE_WEIGHT_TIME);
392 SR_PRIV int pce_322a_meas_range_get(const struct sr_dev_inst *sdi,
393 uint64_t *low, uint64_t *high)
395 struct dev_context *devc;
399 switch (devc->cur_meas_range) {
400 case MEAS_RANGE_30_130:
404 case MEAS_RANGE_30_80:
408 case MEAS_RANGE_50_100:
412 case MEAS_RANGE_80_130:
423 SR_PRIV int pce_322a_meas_range_set(const struct sr_dev_inst *sdi,
424 uint64_t low, uint64_t high)
426 struct dev_context *devc;
432 if (low == 30 && high == 130)
433 range = MEAS_RANGE_30_130;
434 else if (low == 30 && high == 80)
435 range = MEAS_RANGE_30_80;
436 else if (low == 50 && high == 100)
437 range = MEAS_RANGE_50_100;
438 else if (low == 80 && high == 130)
439 range = MEAS_RANGE_80_130;
443 while (range != devc->cur_meas_range) {
444 ret = send_command(sdi, CMD_TOGGLE_MEAS_RANGE);
447 range = (range - 1) & 3;
453 SR_PRIV int pce_322a_power_off(const struct sr_dev_inst *sdi)
455 return send_command(sdi, CMD_POWER_OFF);