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;
30 buffer[0] = command >> 8;
33 if (!(serial = sdi->conn))
36 return serial_write_blocking(serial, (const void *)buffer, 2, 0);
39 static int send_long_command(const struct sr_dev_inst *sdi, uint32_t command)
41 struct sr_serial_dev_inst *serial;
44 buffer[0] = command >> 24;
45 buffer[1] = command >> 16;
46 buffer[2] = command >> 8;
49 if (!(serial = sdi->conn))
52 return serial_write_blocking(serial, (const void *)buffer, 4, 0);
55 static void send_data(const struct sr_dev_inst *sdi, float sample)
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;
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);
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);
83 static void process_measurement(const struct sr_dev_inst *sdi)
85 struct dev_context *devc;
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;
94 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
95 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
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;
102 devc->cur_mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F;
103 devc->cur_mqflags &= ~SR_MQFLAG_SPL_TIME_WEIGHT_S;
106 devc->cur_meas_range = devc->buffer[4] & 3;
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;
115 devc->cur_mqflags &= ~SR_MQFLAG_MIN;
116 devc->cur_mqflags &= ~SR_MQFLAG_MAX;
119 value = devc->buffer[1] << 8 | devc->buffer[2];
120 send_data(sdi, value / 10.0);
123 static void process_memory_measurement(const struct sr_dev_inst *sdi)
125 struct dev_context *devc;
129 value = devc->buffer[devc->buffer_len - 1] << 8;
130 value |= devc->buffer[devc->buffer_len - 2];
132 send_data(sdi, value / 10.0);
135 static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c)
137 struct dev_context *devc;
141 if (devc->buffer_len < BUFFER_SIZE) {
142 devc->buffer[devc->buffer_len++] = c;
144 memmove(devc->buffer, devc->buffer + 1, BUFFER_SIZE - 1);
145 devc->buffer[BUFFER_SIZE - 1] = c;
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;
155 static void process_usage_byte(const struct sr_dev_inst *sdi, uint8_t c)
157 struct dev_context *devc;
161 if (devc->buffer_len < MEM_USAGE_BUFFER_SIZE) {
162 devc->buffer[devc->buffer_len++] = c;
164 memmove(devc->buffer, devc->buffer + 1, MEM_USAGE_BUFFER_SIZE - 1);
165 devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] = c;
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;
184 static void process_memory_byte(const struct sr_dev_inst *sdi, uint8_t c)
186 struct dev_context *devc;
190 if (devc->buffer_len < MEM_DATA_BUFFER_SIZE) {
191 devc->buffer[devc->buffer_len++] = c;
193 memmove(devc->buffer, devc->buffer + 1, MEM_DATA_BUFFER_SIZE - 1);
194 devc->buffer[MEM_DATA_BUFFER_SIZE - 1] = c;
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;
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;
216 devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
217 devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
219 send_data(sdi, -1.0); /* Signal switch of recording. */
220 devc->buffer_skip = 2;
223 if (devc->buffer_skip == 0) {
224 process_memory_measurement(sdi);
225 devc->buffer_skip = 1;
227 devc->buffer_skip -= 1;
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;
238 SR_PRIV int pce_322a_receive_data(int fd, int revents, void *cb_data)
240 const struct sr_dev_inst *sdi;
241 struct dev_context *devc;
242 struct sr_serial_dev_inst *serial;
247 if (!(sdi = cb_data))
250 if (!(devc = sdi->priv))
253 if (!(serial = sdi->conn))
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);
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)
274 process_usage_byte(sdi, c);
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;
284 sr_warn("Exhausted memory blocks.");
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);
297 /* Listen for memory data. */
298 if (revents == G_IO_IN) {
299 if (serial_read_nonblocking(serial, &c, 1) != 1)
301 process_memory_byte(sdi, c);
306 /* Listen for live data. */
307 if (revents == G_IO_IN) {
308 if (serial_read_nonblocking(serial, &c, 1) != 1)
310 process_byte(sdi, c);
317 SR_PRIV int pce_322a_connect(const struct sr_dev_inst *sdi)
319 return send_command(sdi, CMD_CONNECT);
322 SR_PRIV int pce_322a_disconnect(const struct sr_dev_inst *sdi)
324 return send_command(sdi, CMD_DISCONNECT);
327 SR_PRIV int pce_322a_memory_status(const struct sr_dev_inst *sdi)
329 return send_command(sdi, CMD_MEMORY_STATUS);
332 SR_PRIV int pce_322a_memory_clear(const struct sr_dev_inst *sdi)
334 return send_command(sdi, CMD_MEMORY_CLEAR);
337 SR_PRIV int pce_322a_memory_block(const struct sr_dev_inst *sdi, uint16_t memblk)
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);
345 SR_PRIV uint64_t pce_322a_weight_freq_get(const struct sr_dev_inst *sdi)
347 struct dev_context *devc;
351 return devc->cur_mqflags & (SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C);
354 SR_PRIV int pce_322a_weight_freq_set(const struct sr_dev_inst *sdi, uint64_t freqw)
356 struct dev_context *devc;
360 if (devc->cur_mqflags & freqw)
363 return send_command(sdi, CMD_TOGGLE_WEIGHT_FREQ);
366 SR_PRIV uint64_t pce_322a_weight_time_get(const struct sr_dev_inst *sdi)
368 struct dev_context *devc;
372 return devc->cur_mqflags & (SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S);
375 SR_PRIV int pce_322a_weight_time_set(const struct sr_dev_inst *sdi, uint64_t timew)
377 struct dev_context *devc;
381 if (devc->cur_mqflags & timew)
384 return send_command(sdi, CMD_TOGGLE_WEIGHT_TIME);
387 SR_PRIV int pce_322a_meas_range_get(const struct sr_dev_inst *sdi,
388 uint64_t *low, uint64_t *high)
390 struct dev_context *devc;
394 switch (devc->cur_meas_range) {
395 case MEAS_RANGE_30_130:
399 case MEAS_RANGE_30_80:
403 case MEAS_RANGE_50_100:
407 case MEAS_RANGE_80_130:
418 SR_PRIV int pce_322a_meas_range_set(const struct sr_dev_inst *sdi,
419 uint64_t low, uint64_t high)
421 struct dev_context *devc;
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;
438 while (range != devc->cur_meas_range) {
439 ret = send_command(sdi, CMD_TOGGLE_MEAS_RANGE);
442 range = (range - 1) & 3;
448 SR_PRIV int pce_322a_power_off(const struct sr_dev_inst *sdi)
450 return send_command(sdi, CMD_POWER_OFF);