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/>.
25 static int send_command(const struct sr_dev_inst *sdi, uint16_t command)
27 struct sr_serial_dev_inst *serial;
31 buffer[0] = command >> 8;
34 if (!(serial = sdi->conn))
37 ret = serial_write_blocking(serial, buffer, sizeof(buffer), 0);
40 if ((size_t)ret != sizeof(buffer))
46 static int send_long_command(const struct sr_dev_inst *sdi, uint32_t command)
48 struct sr_serial_dev_inst *serial;
52 buffer[0] = command >> 24;
53 buffer[1] = command >> 16;
54 buffer[2] = command >> 8;
57 if (!(serial = sdi->conn))
60 ret = serial_write_blocking(serial, buffer, sizeof(buffer), 0);
63 if ((size_t)ret != sizeof(buffer))
69 static void send_data(const struct sr_dev_inst *sdi, float sample)
71 struct dev_context *devc;
72 struct sr_datafeed_packet packet;
73 struct sr_datafeed_analog analog;
74 struct sr_analog_encoding encoding;
75 struct sr_analog_meaning meaning;
76 struct sr_analog_spec spec;
80 sr_analog_init(&analog, &encoding, &meaning, &spec, 1);
81 meaning.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
82 meaning.mqflags = devc->cur_mqflags;
83 meaning.unit = SR_UNIT_DECIBEL_SPL;
84 meaning.channels = sdi->channels;
85 analog.num_samples = 1;
86 analog.data = &sample;
87 packet.type = SR_DF_ANALOG;
88 packet.payload = &analog;
89 sr_session_send(sdi, &packet);
92 /* Limiting number of samples is only supported for live data. */
93 if (devc->cur_data_source == DATA_SOURCE_LIVE && devc->limit_samples && devc->num_samples >= devc->limit_samples)
94 sr_dev_acquisition_stop((struct sr_dev_inst *)sdi);
97 static void process_measurement(const struct sr_dev_inst *sdi)
99 struct dev_context *devc;
100 unsigned short value;
104 if (devc->buffer[3] & (1 << 0)) {
105 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C;
106 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A;
108 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
109 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
112 if (devc->buffer[3] & (1 << 1)) {
113 devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S;
114 devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_F;
116 devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F;
117 devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_S;
120 devc->cur_meas_range = devc->buffer[4] & 3;
122 if (devc->buffer[4] & (1 << 2)) {
123 devc->cur_mqflags |= SR_MQFLAG_MAX;
124 devc->cur_mqflags &= ~SR_MQFLAG_MIN;
125 } else if (devc->buffer[4] & (1 << 3)) {
126 devc->cur_mqflags |= SR_MQFLAG_MIN;
127 devc->cur_mqflags &= ~SR_MQFLAG_MAX;
129 devc->cur_mqflags &= ~SR_MQFLAG_MIN;
130 devc->cur_mqflags &= ~SR_MQFLAG_MAX;
133 value = devc->buffer[1] << 8 | devc->buffer[2];
134 send_data(sdi, value / 10.0);
137 static void process_memory_measurement(const struct sr_dev_inst *sdi)
139 struct dev_context *devc;
143 value = devc->buffer[devc->buffer_len - 1] << 8;
144 value |= devc->buffer[devc->buffer_len - 2];
146 send_data(sdi, value / 10.0);
149 static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c)
151 struct dev_context *devc;
155 if (devc->buffer_len < BUFFER_SIZE) {
156 devc->buffer[devc->buffer_len++] = c;
158 memmove(devc->buffer, devc->buffer + 1, BUFFER_SIZE - 1);
159 devc->buffer[BUFFER_SIZE - 1] = c;
162 if (devc->buffer_len == BUFFER_SIZE && devc->buffer[0] == 0x7f
163 && devc->buffer[BUFFER_SIZE - 1] == 0x00) {
164 process_measurement(sdi);
165 devc->buffer_len = 0;
169 static void process_usage_byte(const struct sr_dev_inst *sdi, uint8_t c)
171 struct dev_context *devc;
175 if (devc->buffer_len < MEM_USAGE_BUFFER_SIZE) {
176 devc->buffer[devc->buffer_len++] = c;
178 memmove(devc->buffer, devc->buffer + 1, MEM_USAGE_BUFFER_SIZE - 1);
179 devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] = c;
182 if (devc->buffer_len == MEM_USAGE_BUFFER_SIZE && devc->buffer[0] == 0xd1
183 && devc->buffer[1] == 0x05 && devc->buffer[2] == 0x00
184 && devc->buffer[3] == 0x01 && devc->buffer[4] == 0xd2
185 && devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] == 0x20) {
186 devc->memory_block_usage = devc->buffer[5] << 8 | devc->buffer[6];
187 devc->memory_last_block_usage = devc->buffer[7];
188 sr_warn("Memory usage: %d blocks of 256 bytes, 1 block of %d bytes",
189 devc->memory_block_usage - 1, devc->memory_last_block_usage);
190 devc->buffer_len = 0;
191 devc->buffer_skip = 1;
192 devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK;
193 devc->memory_block_cursor = 0;
194 devc->memory_block_counter = 0;
198 static void process_memory_byte(const struct sr_dev_inst *sdi, uint8_t c)
200 struct dev_context *devc;
204 if (devc->buffer_len < MEM_DATA_BUFFER_SIZE) {
205 devc->buffer[devc->buffer_len++] = c;
207 memmove(devc->buffer, devc->buffer + 1, MEM_DATA_BUFFER_SIZE - 1);
208 devc->buffer[MEM_DATA_BUFFER_SIZE - 1] = c;
211 if (devc->buffer_skip == 0 \
212 && (devc->buffer[devc->buffer_len-2] & 0x7f) == 0x7f
213 && (devc->buffer[devc->buffer_len-1] & 0xf7) == 0xf7) {
214 /* Recording session header bytes found, load next 7 bytes. */
215 devc->buffer_skip = MEM_DATA_BUFFER_SIZE - 2;
218 if (devc->buffer_skip == 0 && devc->buffer_len == MEM_DATA_BUFFER_SIZE
219 && (devc->buffer[0] & 0x7f) == 0x7f && (devc->buffer[1] & 0xf7) == 0xf7
220 && devc->buffer[2] == 0x01 && devc->buffer[3] == 0x00) {
221 /* Print information about recording. */
222 sr_err("Recording dB(%X) %02x/%02x/%02x %02x:%02x:%02x ",
223 devc->buffer[4], devc->buffer[5], devc->buffer[6], devc->buffer[7],
224 devc->buffer[8] & 0x3f, devc->buffer[9], devc->buffer[10]);
225 /* Set dBA/dBC flag for recording. */
226 if (devc->buffer[4] == 0x0c) {
227 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C;
228 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A;
230 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
231 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
233 send_data(sdi, -1.0); /* Signal switch of recording. */
234 devc->buffer_skip = 2;
237 if (devc->buffer_skip == 0) {
238 process_memory_measurement(sdi);
239 devc->buffer_skip = 1;
241 devc->buffer_skip -= 1;
244 devc->memory_block_cursor++; /* uint8_t goes back to 0 after 255. */
245 if (devc->memory_block_cursor == 0) {
246 /* Current block is completed. */
247 devc->memory_block_counter++;
248 devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK;
252 SR_PRIV int pce_322a_receive_data(int fd, int revents, void *cb_data)
254 const struct sr_dev_inst *sdi;
255 struct dev_context *devc;
256 struct sr_serial_dev_inst *serial;
261 if (!(sdi = cb_data))
264 if (!(devc = sdi->priv))
267 if (!(serial = sdi->conn))
270 if (devc->cur_data_source == DATA_SOURCE_MEMORY) {
271 switch (devc->memory_state) {
272 case MEM_STATE_REQUEST_MEMORY_USAGE:
273 /* At init, disconnect and request the memory status. */
274 sr_warn("Requesting memory usage.");
275 pce_322a_disconnect(sdi);
276 devc->memory_state = MEM_STATE_GET_MEMORY_USAGE;
277 devc->memory_block_usage = 0;
278 devc->memory_last_block_usage = 0;
279 devc->memory_block_counter = 0;
280 devc->memory_block_cursor = 0;
281 pce_322a_memory_status(sdi);
283 case MEM_STATE_GET_MEMORY_USAGE:
284 /* Listen for memory usage answer. */
285 if (revents == G_IO_IN) {
286 if (serial_read_nonblocking(serial, &c, 1) != 1)
288 process_usage_byte(sdi, c);
291 case MEM_STATE_REQUEST_MEMORY_BLOCK:
292 /* When cursor is 0, request next memory block. */
293 if (devc->memory_block_counter <= devc->memory_block_usage) {
294 sr_warn("Requesting memory block %d.", devc->memory_block_counter);
295 pce_322a_memory_block(sdi, devc->memory_block_counter);
296 devc->memory_state = MEM_STATE_GET_MEMORY_BLOCK;
298 sr_warn("Exhausted memory blocks.");
302 case MEM_STATE_GET_MEMORY_BLOCK:
303 /* Stop after reading last byte of last block. */
304 if (devc->memory_block_counter >= devc->memory_block_usage
305 && devc->memory_block_cursor >= devc->memory_last_block_usage) {
306 sr_warn("Done reading memory (%d bytes).",
307 256 * (devc->memory_block_counter - 1)
308 + devc->memory_block_cursor);
311 /* Listen for memory data. */
312 if (revents == G_IO_IN) {
313 if (serial_read_nonblocking(serial, &c, 1) != 1)
315 process_memory_byte(sdi, c);
320 /* Listen for live data. */
321 if (revents == G_IO_IN) {
322 if (serial_read_nonblocking(serial, &c, 1) != 1)
324 process_byte(sdi, c);
331 SR_PRIV int pce_322a_connect(const struct sr_dev_inst *sdi)
333 return send_command(sdi, CMD_CONNECT);
336 SR_PRIV int pce_322a_disconnect(const struct sr_dev_inst *sdi)
338 return send_command(sdi, CMD_DISCONNECT);
341 SR_PRIV int pce_322a_memory_status(const struct sr_dev_inst *sdi)
343 return send_command(sdi, CMD_MEMORY_STATUS);
346 SR_PRIV int pce_322a_memory_clear(const struct sr_dev_inst *sdi)
348 return send_command(sdi, CMD_MEMORY_CLEAR);
351 SR_PRIV int pce_322a_memory_block(const struct sr_dev_inst *sdi, uint16_t memblk)
353 uint8_t buf0 = memblk;
354 uint8_t buf1 = memblk >> 8;
355 uint32_t command = CMD_MEMORY_TRANSFER << 16 | buf0 << 8 | buf1;
356 return send_long_command(sdi, command);
359 SR_PRIV uint64_t pce_322a_weight_freq_get(const struct sr_dev_inst *sdi)
361 struct dev_context *devc;
365 return devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C);
368 SR_PRIV int pce_322a_weight_freq_set(const struct sr_dev_inst *sdi, uint64_t freqw)
370 struct dev_context *devc;
374 if (devc->cur_mqflags & freqw)
377 return send_command(sdi, CMD_TOGGLE_WEIGHT_FREQ);
380 SR_PRIV uint64_t pce_322a_weight_time_get(const struct sr_dev_inst *sdi)
382 struct dev_context *devc;
386 return devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S);
389 SR_PRIV int pce_322a_weight_time_set(const struct sr_dev_inst *sdi, uint64_t timew)
391 struct dev_context *devc;
395 if (devc->cur_mqflags & timew)
398 return send_command(sdi, CMD_TOGGLE_WEIGHT_TIME);
401 SR_PRIV int pce_322a_meas_range_get(const struct sr_dev_inst *sdi,
402 uint64_t *low, uint64_t *high)
404 struct dev_context *devc;
408 switch (devc->cur_meas_range) {
409 case MEAS_RANGE_30_130:
413 case MEAS_RANGE_30_80:
417 case MEAS_RANGE_50_100:
421 case MEAS_RANGE_80_130:
432 SR_PRIV int pce_322a_meas_range_set(const struct sr_dev_inst *sdi,
433 uint64_t low, uint64_t high)
435 struct dev_context *devc;
441 if (low == 30 && high == 130)
442 range = MEAS_RANGE_30_130;
443 else if (low == 30 && high == 80)
444 range = MEAS_RANGE_30_80;
445 else if (low == 50 && high == 100)
446 range = MEAS_RANGE_50_100;
447 else if (low == 80 && high == 130)
448 range = MEAS_RANGE_80_130;
452 while (range != devc->cur_meas_range) {
453 ret = send_command(sdi, CMD_TOGGLE_MEAS_RANGE);
456 range = (range - 1) & 3;
462 SR_PRIV int pce_322a_power_off(const struct sr_dev_inst *sdi)
464 return send_command(sdi, CMD_POWER_OFF);