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CO2_Gadget_BLE.h
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CO2_Gadget_BLE.h
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#ifndef CO2_Gadget_BLE_h
#define CO2_Gadget_BLE_h
#ifdef SUPPORT_BLE
#include "Sensirion_Gadget_BLE.h"
#include "WifiMultiLibraryWrapper.h"
// clang-format on
NimBLELibraryWrapper lib;
WifiMultiLibraryWrapper wifi;
DataProvider provider(lib, DataType::T_RH_CO2, true, true, true, &wifi);
#endif
void setBLEHistoryInterval(uint64_t interval) {
#ifdef SUPPORT_BLE
if (provider.getHistoryInterval() != interval * 1000) {
#ifdef DEBUG_BLE
Serial.flush();
Serial.println("-->[BLE ] Actual history interval: " + String(provider.getHistoryInterval() / 1000) + " seconds");
Serial.println("-->[BLE ] Setting history interval to: " + String(interval) + " seconds");
delay(20);
#endif
provider.setHistoryInterval(interval * 1000);
}
#endif
}
void initBLE() {
#ifdef SUPPORT_BLE
if (activeBLE) {
if (bleInitialized) {
Serial.print(
"-->[BLE ] Sensirion Gadget BLE Lib already initialized with deviceId = ");
Serial.println(provider.getDeviceIdString());
return;
} else {
setBLEHistoryInterval(sampleInterval);
provider.begin();
Serial.print("-->[BLE ] Sensirion Gadget BLE Lib initialized with deviceId = ");
Serial.println(provider.getDeviceIdString());
Serial.print("-->[BLE ] History interval set to: ");
Serial.print(provider.getHistoryInterval() / 1000);
Serial.println(" seconds");
// Set initial battery level
provider.setBatteryLevel(batteryLevel);
bleInitialized = true;
}
}
#endif
}
/**
* @brief Publishes sensor data over BLE (Bluetooth Low Energy).
*
* This function is responsible for publishing sensor data over BLE if the BLE support is enabled and the sensor readings are within the valid range.
* The sensor data includes CO2 level, temperature, and humidity.
*
* @note This function should be called periodically to publish the sensor data.
*/
void publishBLE() {
static int64_t lastMeasurementTimeMs = 0;
static int measurementIntervalMs = 1000;
static int64_t lastBatteryLevelUpdateMs = 0;
static int batteryLevelUpdateIntervalMs = 60000;
#ifdef SUPPORT_BLE
if (isDownloadingBLE) {
return;
}
if (millis() - lastMeasurementTimeMs >= measurementIntervalMs) {
if ((activeBLE) && (co2 >= 400) && (co2 <= 5000) && (temp >= -40) && (temp <= 85) && (hum >= 0) && (hum <= 100)) {
provider.writeValueToCurrentSample(co2, SignalType::CO2_PARTS_PER_MILLION);
provider.writeValueToCurrentSample(temp, SignalType::TEMPERATURE_DEGREES_CELSIUS);
provider.writeValueToCurrentSample(hum, SignalType::RELATIVE_HUMIDITY_PERCENTAGE);
provider.commitSample();
lastMeasurementTimeMs = millis();
}
#ifdef DEBUG_BLE
Serial.println("-->[BLE ] Sent CO2: " + String(co2) + " ppm, Temp: " + String(temp) + " C, Hum: " + String(hum) + " %");
publishMQTTLogData("-->[BLE ] Sent CO2: " + String(co2) + " ppm, Temp: " + String(temp) + " C, Hum: " + String(hum) + " %");
delay(20);
#endif
}
if (millis() - lastBatteryLevelUpdateMs >= batteryLevelUpdateIntervalMs) {
lastBatteryLevelUpdateMs = millis();
if (batteryLevel == 0) {
batteryLevel = 100;
}
provider.setBatteryLevel(batteryLevel);
#ifdef DEBUG_BLE
Serial.println("-->[BLE ] Sent Battery Level: " + String(batteryLevel) + "%");
publishMQTTLogData("-->[BLE ] Sent Battery Level: " + String(batteryLevel) + "%");
delay(20);
#endif
}
#endif
}
void handleBLEwifiChanged() {
#ifdef SUPPORT_BLE
wifiSSID = provider.getWifiSSID();
wifiPass = provider.getWifiPassword();
wifiSSID.trim();
wifiPass.trim();
wifiChanged = true;
activeWIFI = true;
Serial.println("-->[BLE ] Wifi SSID changed to: #" + wifiSSID + "#");
#ifndef WIFI_PRIVACY
Serial.println("-->[BLE ] Wifi password changed to: #" + wifiPass + "#");
#endif
delay(5);
#endif
}
void handleFrcRequest() {
#ifdef SUPPORT_BLE
if (!provider.isFRCRequested()) {
return;
}
calibrationValue = provider.getReferenceCO2Level();
pendingCalibration = true;
Serial.print("[BLE ] Received FRC request (calibration) with reference CO2 level: ");
Serial.println(calibrationValue);
delay(5);
provider.completeFRCRequest();
#endif
}
void BLELoop() {
#ifdef SUPPORT_BLE
int connectTries = 0;
if (!activeBLE) {
return;
}
provider.handleDownload();
isDownloadingBLE = provider.isDownloading();
if (isDownloadingBLE) return;
// delay(3);
if (provider.wifiChanged()) handleBLEwifiChanged();
if (provider.historyIntervalChanged()) {
Serial.print("-->[BLE ] History interval changed to: ");
Serial.print(provider.getHistoryInterval() / 1000);
Serial.println(" seconds");
}
handleFrcRequest();
#endif
}
#endif // CO2_Gadget_BLE_h