* This file is part of the libsigrok project.
*
* Copyright (C) 2016 George Hopkins <george-hopkins@null.net>
+ * Copyright (C) 2016 Matthieu Guillaumin <matthieu@guillaum.in>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*/
#include <config.h>
+#include <string.h>
#include "protocol.h"
static int send_command(const struct sr_dev_inst *sdi, uint16_t command)
{
struct sr_serial_dev_inst *serial;
uint8_t buffer[2];
+ int ret;
buffer[0] = command >> 8;
buffer[1] = command;
if (!(serial = sdi->conn))
return SR_ERR;
- if (serial_write_nonblocking(serial, (const void *)buffer, 2) != 2)
+ ret = serial_write_blocking(serial, buffer, sizeof(buffer), 0);
+ if (ret < 0)
+ return ret;
+ if ((size_t)ret != sizeof(buffer))
+ return SR_ERR_IO;
+
+ return SR_OK;
+}
+
+static int send_long_command(const struct sr_dev_inst *sdi, uint32_t command)
+{
+ struct sr_serial_dev_inst *serial;
+ uint8_t buffer[4];
+ int ret;
+
+ buffer[0] = command >> 24;
+ buffer[1] = command >> 16;
+ buffer[2] = command >> 8;
+ buffer[3] = command;
+
+ if (!(serial = sdi->conn))
return SR_ERR;
+ ret = serial_write_blocking(serial, buffer, sizeof(buffer), 0);
+ if (ret < 0)
+ return ret;
+ if ((size_t)ret != sizeof(buffer))
+ return SR_ERR_IO;
+
return SR_OK;
}
sr_session_send(sdi, &packet);
devc->num_samples++;
- if (devc->limit_samples && devc->num_samples >= devc->limit_samples)
- sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi);
+ /* Limiting number of samples is only supported for live data. */
+ if (devc->cur_data_source == DATA_SOURCE_LIVE && devc->limit_samples && devc->num_samples >= devc->limit_samples)
+ sr_dev_acquisition_stop((struct sr_dev_inst *)sdi);
}
static void process_measurement(const struct sr_dev_inst *sdi)
send_data(sdi, value / 10.0);
}
+static void process_memory_measurement(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ uint16_t value;
+
+ devc = sdi->priv;
+ value = devc->buffer[devc->buffer_len - 1] << 8;
+ value |= devc->buffer[devc->buffer_len - 2];
+
+ send_data(sdi, value / 10.0);
+}
+
static void process_byte(const struct sr_dev_inst *sdi, const unsigned char c)
{
struct dev_context *devc;
- unsigned int i;
devc = sdi->priv;
if (devc->buffer_len < BUFFER_SIZE) {
devc->buffer[devc->buffer_len++] = c;
} else {
- for (i = 1; i < BUFFER_SIZE; i++)
- devc->buffer[i - 1] = devc->buffer[i];
+ memmove(devc->buffer, devc->buffer + 1, BUFFER_SIZE - 1);
devc->buffer[BUFFER_SIZE - 1] = c;
- if (devc->buffer[0] == 0x7f && devc->buffer[BUFFER_SIZE - 1] == 0x00) {
- process_measurement(sdi);
- devc->buffer_len = 0;
+ }
+
+ if (devc->buffer_len == BUFFER_SIZE && devc->buffer[0] == 0x7f
+ && devc->buffer[BUFFER_SIZE - 1] == 0x00) {
+ process_measurement(sdi);
+ devc->buffer_len = 0;
+ }
+}
+
+static void process_usage_byte(const struct sr_dev_inst *sdi, uint8_t c)
+{
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ if (devc->buffer_len < MEM_USAGE_BUFFER_SIZE) {
+ devc->buffer[devc->buffer_len++] = c;
+ } else {
+ memmove(devc->buffer, devc->buffer + 1, MEM_USAGE_BUFFER_SIZE - 1);
+ devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] = c;
+ }
+
+ if (devc->buffer_len == MEM_USAGE_BUFFER_SIZE && devc->buffer[0] == 0xd1
+ && devc->buffer[1] == 0x05 && devc->buffer[2] == 0x00
+ && devc->buffer[3] == 0x01 && devc->buffer[4] == 0xd2
+ && devc->buffer[MEM_USAGE_BUFFER_SIZE - 1] == 0x20) {
+ devc->memory_block_usage = devc->buffer[5] << 8 | devc->buffer[6];
+ devc->memory_last_block_usage = devc->buffer[7];
+ sr_warn("Memory usage: %d blocks of 256 bytes, 1 block of %d bytes",
+ devc->memory_block_usage - 1, devc->memory_last_block_usage);
+ devc->buffer_len = 0;
+ devc->buffer_skip = 1;
+ devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK;
+ devc->memory_block_cursor = 0;
+ devc->memory_block_counter = 0;
+ }
+}
+
+static void process_memory_byte(const struct sr_dev_inst *sdi, uint8_t c)
+{
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ if (devc->buffer_len < MEM_DATA_BUFFER_SIZE) {
+ devc->buffer[devc->buffer_len++] = c;
+ } else {
+ memmove(devc->buffer, devc->buffer + 1, MEM_DATA_BUFFER_SIZE - 1);
+ devc->buffer[MEM_DATA_BUFFER_SIZE - 1] = c;
+ }
+
+ if (devc->buffer_skip == 0 \
+ && (devc->buffer[devc->buffer_len-2] & 0x7f) == 0x7f
+ && (devc->buffer[devc->buffer_len-1] & 0xf7) == 0xf7) {
+ /* Recording session header bytes found, load next 7 bytes. */
+ devc->buffer_skip = MEM_DATA_BUFFER_SIZE - 2;
+ }
+
+ if (devc->buffer_skip == 0 && devc->buffer_len == MEM_DATA_BUFFER_SIZE
+ && (devc->buffer[0] & 0x7f) == 0x7f && (devc->buffer[1] & 0xf7) == 0xf7
+ && devc->buffer[2] == 0x01 && devc->buffer[3] == 0x00) {
+ /* Print information about recording. */
+ sr_err("Recording dB(%X) %02x/%02x/%02x %02x:%02x:%02x ",
+ devc->buffer[4], devc->buffer[5], devc->buffer[6], devc->buffer[7],
+ devc->buffer[8] & 0x3f, devc->buffer[9], devc->buffer[10]);
+ /* Set dBA/dBC flag for recording. */
+ if (devc->buffer[4] == 0x0c) {
+ devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C;
+ devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_A;
+ } else {
+ devc->cur_mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
+ devc->cur_mqflags &= ~SR_MQFLAG_SPL_FREQ_WEIGHT_C;
}
+ send_data(sdi, -1.0); /* Signal switch of recording. */
+ devc->buffer_skip = 2;
+ }
+
+ if (devc->buffer_skip == 0) {
+ process_memory_measurement(sdi);
+ devc->buffer_skip = 1;
+ } else {
+ devc->buffer_skip -= 1;
+ }
+
+ devc->memory_block_cursor++; /* uint8_t goes back to 0 after 255. */
+ if (devc->memory_block_cursor == 0) {
+ /* Current block is completed. */
+ devc->memory_block_counter++;
+ devc->memory_state = MEM_STATE_REQUEST_MEMORY_BLOCK;
}
}
if (!(serial = sdi->conn))
return TRUE;
- if (revents == G_IO_IN) {
- if (serial_read_nonblocking(serial, &c, 1) != 1)
- return TRUE;
- process_byte(sdi, c);
+ if (devc->cur_data_source == DATA_SOURCE_MEMORY) {
+ switch (devc->memory_state) {
+ case MEM_STATE_REQUEST_MEMORY_USAGE:
+ /* At init, disconnect and request the memory status. */
+ sr_warn("Requesting memory usage.");
+ pce_322a_disconnect(sdi);
+ devc->memory_state = MEM_STATE_GET_MEMORY_USAGE;
+ devc->memory_block_usage = 0;
+ devc->memory_last_block_usage = 0;
+ devc->memory_block_counter = 0;
+ devc->memory_block_cursor = 0;
+ pce_322a_memory_status(sdi);
+ break;
+ case MEM_STATE_GET_MEMORY_USAGE:
+ /* Listen for memory usage answer. */
+ if (revents == G_IO_IN) {
+ if (serial_read_nonblocking(serial, &c, 1) != 1)
+ return TRUE;
+ process_usage_byte(sdi, c);
+ }
+ break;
+ case MEM_STATE_REQUEST_MEMORY_BLOCK:
+ /* When cursor is 0, request next memory block. */
+ if (devc->memory_block_counter <= devc->memory_block_usage) {
+ sr_warn("Requesting memory block %d.", devc->memory_block_counter);
+ pce_322a_memory_block(sdi, devc->memory_block_counter);
+ devc->memory_state = MEM_STATE_GET_MEMORY_BLOCK;
+ } else {
+ sr_warn("Exhausted memory blocks.");
+ return FALSE;
+ }
+ break;
+ case MEM_STATE_GET_MEMORY_BLOCK:
+ /* Stop after reading last byte of last block. */
+ if (devc->memory_block_counter >= devc->memory_block_usage
+ && devc->memory_block_cursor >= devc->memory_last_block_usage) {
+ sr_warn("Done reading memory (%d bytes).",
+ 256 * (devc->memory_block_counter - 1)
+ + devc->memory_block_cursor);
+ return FALSE;
+ }
+ /* Listen for memory data. */
+ if (revents == G_IO_IN) {
+ if (serial_read_nonblocking(serial, &c, 1) != 1)
+ return TRUE;
+ process_memory_byte(sdi, c);
+ }
+ break;
+ }
+ } else {
+ /* Listen for live data. */
+ if (revents == G_IO_IN) {
+ if (serial_read_nonblocking(serial, &c, 1) != 1)
+ return TRUE;
+ process_byte(sdi, c);
+ }
}
return TRUE;
return send_command(sdi, CMD_DISCONNECT);
}
+SR_PRIV int pce_322a_memory_status(const struct sr_dev_inst *sdi)
+{
+ return send_command(sdi, CMD_MEMORY_STATUS);
+}
+
+SR_PRIV int pce_322a_memory_clear(const struct sr_dev_inst *sdi)
+{
+ return send_command(sdi, CMD_MEMORY_CLEAR);
+}
+
+SR_PRIV int pce_322a_memory_block(const struct sr_dev_inst *sdi, uint16_t memblk)
+{
+ uint8_t buf0 = memblk;
+ uint8_t buf1 = memblk >> 8;
+ uint32_t command = CMD_MEMORY_TRANSFER << 16 | buf0 << 8 | buf1;
+ return send_long_command(sdi, command);
+}
+
SR_PRIV uint64_t pce_322a_weight_freq_get(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
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