ESP32-PaxCounter/src/cyclic.cpp

/* This routine is called by interrupt in regular intervals */
/* Interval can be set in paxcounter.conf (HOMECYCLE)       */

// Basic config
#include "cyclic.h"

// Local logging tag
static const char TAG[] = __FILE__;

Ticker housekeeper;

void housekeeping() {
  xTaskNotifyFromISR(irqHandlerTask, CYCLIC_IRQ, eSetBits, NULL);
}

// do all housekeeping
void doHousekeeping() {

  // update uptime counter
  uptime();

  // check if update mode trigger switch was set
  if (RTC_runmode == RUNMODE_UPDATE) {
    // check battery status if we can before doing ota
    if (batt_sufficient())
      do_reset(true); // warmstart to runmode update
    else {
      ESP_LOGE(TAG, "Battery voltage %dmV too low for OTA", batt_voltage);
      RTC_runmode == RUNMODE_NORMAL; // keep running in normal mode
    }
  }

  // task storage debugging //
  ESP_LOGD(TAG, "IRQhandler %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(irqHandlerTask),
           eTaskGetState(irqHandlerTask));
#if (HAS_LORA)
  ESP_LOGD(TAG, "LMiCtask %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(lmicTask), eTaskGetState(lmicTask));
  ESP_LOGD(TAG, "Lorasendtask %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(lorasendTask),
           eTaskGetState(lorasendTask));
#endif
#if (HAS_GPS)
  ESP_LOGD(TAG, "Gpsloop %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(GpsTask), eTaskGetState(GpsTask));
#endif
#ifdef HAS_SPI
  ESP_LOGD(TAG, "spiloop %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(spiTask), eTaskGetState(spiTask));
#endif

#if (defined HAS_DCF77 || defined HAS_IF482)
  ESP_LOGD(TAG, "Clockloop %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(ClockTask), eTaskGetState(ClockTask));
#endif

#if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
  ESP_LOGD(TAG, "LEDloop %d bytes left | Taskstate = %d",
           uxTaskGetStackHighWaterMark(ledLoopTask),
           eTaskGetState(ledLoopTask));
#endif

// read battery voltage into global variable
#if (defined BAT_MEASURE_ADC || defined HAS_PMU)
  batt_voltage = read_voltage();
  if (batt_voltage == 0xffff)
    ESP_LOGI(TAG, "Battery: external power");
  else
    ESP_LOGI(TAG, "Battery: %dmV", batt_voltage);
#ifdef HAS_PMU
  AXP192_showstatus();
#endif
#endif

// display BME680/280 sensor data
#if (HAS_BME)
#ifdef HAS_BME680
  ESP_LOGI(TAG, "BME680 Temp: %.2f°C | IAQ: %.2f | IAQacc: %d",
           bme_status.temperature, bme_status.iaq, bme_status.iaq_accuracy);
#elif defined HAS_BME280
  ESP_LOGI(TAG, "BME280 Temp: %.2f°C | Humidity: %.2f | Pressure: %.0f",
           bme_status.temperature, bme_status.humidity, bme_status.pressure);
#elif defined HAS_BMP180
  ESP_LOGI(TAG, "BMP180 Temp: %.2f°C | Pressure: %.0f",
           bme_status.temperature, bme_status.pressure);
#endif
#endif

  // check free heap memory
  if (ESP.getMinFreeHeap() <= MEM_LOW) {
    ESP_LOGI(TAG,
             "Memory full, counter cleared (heap low water mark = %d Bytes / "
             "free heap = %d bytes)",
             ESP.getMinFreeHeap(), ESP.getFreeHeap());
    reset_counters(); // clear macs container and reset all counters
    get_salt();       // get new salt for salting hashes

    if (ESP.getMinFreeHeap() <= MEM_LOW) // check again
      do_reset(true);                    // memory leak, reset device
  }

// check free PSRAM memory
#ifdef BOARD_HAS_PSRAM
  if (ESP.getMinFreePsram() <= MEM_LOW) {
    ESP_LOGI(TAG, "PSRAM full, counter cleared");
    reset_counters(); // clear macs container and reset all counters
    get_salt();       // get new salt for salting hashes

    if (ESP.getMinFreePsram() <= MEM_LOW) // check again
      do_reset(true);                     // memory leak, reset device
  }
#endif

} // doHousekeeping()

// uptime counter 64bit to prevent millis() rollover after 49 days
uint64_t uptime() {
  static uint32_t low32, high32;
  uint32_t new_low32 = millis();
  if (new_low32 < low32)
    high32++;
  low32 = new_low32;
  return (uint64_t)high32 << 32 | low32;
}

uint32_t getFreeRAM() {
#ifndef BOARD_HAS_PSRAM
  return ESP.getFreeHeap();
#else
  return ESP.getFreePsram();
#endif
}

void reset_counters() {
#if ((WIFICOUNTER) || (BLECOUNTER))
  macs.clear();   // clear all macs container
  macs_total = 0; // reset all counters
  macs_wifi = 0;
  macs_ble = 0;
#ifdef HAS_DISPLAY
  oledPlotCurve(0, true);
#endif

#endif
}