ESP32-PaxCounter/src/senddata.cpp

// Basic Config
#include "globals.h"

// put data to send in RTos Queues used for transmit over channels Lora and SPI
void SendData(uint8_t port) {

  MessageBuffer_t SendBuffer;

  SendBuffer.MessageSize = payload.getSize();
  SendBuffer.MessagePort = PAYLOAD_ENCODER <= 2
                               ? port
                               : (PAYLOAD_ENCODER == 4 ? LPP2PORT : LPP1PORT);
  memcpy(SendBuffer.Message, payload.getBuffer(), payload.getSize());

  // enqueue message in LoRa send queue
#ifdef HAS_LORA
  if (xQueueSendToBack(LoraSendQueue, (void *)&SendBuffer, (TickType_t)0) ==
      pdTRUE)
    ESP_LOGI(TAG, "%d bytes enqueued to send on LoRa", payload.getSize());
#endif

// enqueue message in SPI send queue
#ifdef HAS_SPI
  if (xQueueSendToBack(SPISendQueue, (void *)&SendBuffer, (TickType_t)0) ==
      pdTRUE)
    ESP_LOGI(TAG, "%d bytes enqueued to send on SPI", payload.getSize());
#endif

  // clear counter if not in cumulative counter mode
  if ((port == COUNTERPORT) && (cfg.countermode != 1)) {
    reset_counters(); // clear macs container and reset all counters
    get_salt();     // get new salt for salting hashes
    ESP_LOGI(TAG, "Counter cleared");
  }
} // SendData

// interrupt triggered function to prepare payload to send
void sendPayload() {

  portENTER_CRITICAL(&timerMux);
  SendCycleTimerIRQ = 0;
  portEXIT_CRITICAL(&timerMux);

  // append counter data to payload
  payload.reset();
  payload.addCount(macs_wifi, cfg.blescan ? macs_ble : 0);
  // append GPS data, if present

#ifdef HAS_GPS
  // show NMEA data in debug mode, useful for debugging GPS on board
  // connection
  ESP_LOGD(TAG, "GPS NMEA data: passed %d / failed: %d / with fix: %d",
           gps.passedChecksum(), gps.failedChecksum(), gps.sentencesWithFix());
  // log GPS position if we have a fix and gps data mode is enabled
  if ((cfg.gpsmode) && (gps.location.isValid())) {
    gps_read();
    payload.addGPS(gps_status);
    ESP_LOGD(TAG, "lat=%.6f | lon=%.6f | %u Sats | HDOP=%.1f | Altitude=%um",
             gps_status.latitude / (float)1e6,
             gps_status.longitude / (float)1e6, gps_status.satellites,
             gps_status.hdop / (float)100, gps_status.altitude);
  } else {
    ESP_LOGD(TAG, "No valid GPS position or GPS data mode disabled");
  }
#endif
  SendData(COUNTERPORT);
} // sendpayload()

// interrupt handler used for payload send cycle timer
void IRAM_ATTR SendCycleIRQ() {
  portENTER_CRITICAL(&timerMux);
  SendCycleTimerIRQ++;
  portEXIT_CRITICAL(&timerMux);
}

// interrupt triggered function to eat data from send queues and transmit it
void checkSendQueues() {
  MessageBuffer_t SendBuffer;

#ifdef HAS_LORA
  // Check if there is a pending TX/RX job running
  if ((LMIC.opmode & (OP_JOINING | OP_REJOIN | OP_TXDATA | OP_POLL)) != 0) {
    // LoRa Busy -> don't eat data from queue, since it cannot be sent
  } else {
    if (xQueueReceive(LoraSendQueue, &SendBuffer, (TickType_t)0) == pdTRUE) {
      // SendBuffer gets struct MessageBuffer with next payload from queue
      LMIC_setTxData2(SendBuffer.MessagePort, SendBuffer.Message,
                      SendBuffer.MessageSize, (cfg.countermode & 0x02));
      ESP_LOGI(TAG, "%d bytes sent to LoRa", SendBuffer.MessageSize);
      sprintf(display_line7, "PACKET QUEUED");
    }
  }
#endif

#ifdef HAS_SPI
  if (xQueueReceive(SPISendQueue, &SendBuffer, (TickType_t)0) == pdTRUE) {
    ESP_LOGI(TAG, "%d bytes sent to SPI", SendBuffer.MessageSize);
  }
#endif

} // checkSendQueues

void flushQueues() {
#ifdef HAS_LORA
  xQueueReset(LoraSendQueue);
#endif
#ifdef HAS_SPI
  xQueueReset(SPISendQueue);
#endif
}