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+.vscode

ms-atmega328p--e01c-ml01s--aht10.ino

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+// #define MY_DEBUG
+// Enable and select radio type attached 
+#define MY_RADIO_RF24
+// #define MY_RF24_PA_LEVEL RF24_PA_MIN
+// #define MY_RF24_PA_LEVEL RF24_PA_LOW
+#define MY_RF24_PA_LEVEL RF24_PA_HIGH
+//#define MY_RF24_PA_LEVEL RF24_PA_MAX
+
+#define MY_RF24_CHANNEL 14
+
+// #define MY_SIGNING_SIMPLE_PASSWD "C@KptBi1L@5op?8!"
+// #define MY_SECURITY_SIMPLE_PASSWD "C@KptBi1L@5op?8!"
+
+#include <SPI.h>
+#include <MySensors.h>
+// https://github.com/enjoyneering/AHTxx/blob/main/examples/AHT10_Serial/AHT10_Serial.ino
+#include <Wire.h>
+#include <AHTxx.h>
+
+static const uint64_t UPDATE_INTERVAL = 900000; // (15min * 60sec = 900 seconds * 1000 milliseconds)
+
+#define CHILD_ID_HUM 0
+#define CHILD_ID_TEMP 1
+#define CHILD_ID_BAT 2
+#define CHILD_ID_BATV 3
+
+bool metric = true;
+float ahtTemp;                               //to store T/RH result
+float ahtHumi;
+
+int oldBatteryPcnt = 0;
+#define FULL_BATTERY 3 // 3V for 2xAA alkaline. Adjust if you use a different battery setup.
+
+
+MyMessage msgHum(CHILD_ID_HUM, V_HUM);
+MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
+MyMessage msgBat(CHILD_ID_BAT, V_VAR1);
+MyMessage msgBatPrefix(CHILD_ID_BAT, V_UNIT_PREFIX);  // Custom unit message.
+MyMessage msgBatV(CHILD_ID_BATV, V_VAR2);
+MyMessage msgBatVPrefix(CHILD_ID_BATV, V_UNIT_PREFIX);  // Custom unit message.
+// AHT10
+
+// #define AHT1X_POWER_ON_DELAY 100 //wait for AHT1x to initialize after power-on, in milliseconds
+// #define AHTXX_I2C_SPEED_HZ 400000
+AHTxx aht10(0x38, AHT1x_SENSOR); //sensor address, sensor type
+// AHTxx aht10(0x00, 0x38);
+
+
+void presentation()  
+{ 
+  Serial.println("- - - - - presentation - - - - -");
+  
+  // Send the sketch version information to the gateway
+  sendSketchInfo("aht10", "0.4.2");
+  
+  // Register all sensors to gw (they will be created as child devices)
+  present(CHILD_ID_TEMP, S_TEMP, "Temperature");
+  present(CHILD_ID_HUM, S_HUM, "Humidity");
+  present(CHILD_ID_BAT, S_CUSTOM, "Battery Percent");
+  present(CHILD_ID_BATV, S_CUSTOM, "Battery Voltage");
+  
+  metric = getControllerConfig().isMetric;
+
+}
+
+
+void setup()
+{
+  #ifdef MY_DEBUG
+    Serial.println("- - - - - setup - - - - -");
+    // Serial.println(AHT1x_SENSOR);
+    // aht10.setType(AHT1x_SENSOR);
+  #endif
+  
+  while (aht10.begin() != true) //for ESP-01 use aht10.begin(0, 2);
+  {
+    Serial.println(F("AHT1x not connected or fail to load calibration coefficient")); //(F()) save string to flash & keeps dynamic memory free
+    delay(5000);
+  }
+
+  #ifdef MY_DEBUG
+    Serial.println(F("AHT10 OK"));
+  #endif
+}
+
+
+void loop()      
+{  
+  #ifdef MY_DEBUG
+  Serial.println("- - - - - loop - - - - -");
+    Serial.println("getting humidity & temperature");
+  #endif
+
+  ahtTemp = aht10.readTemperature(); //read 6-bytes via I2C, takes 80 milliseconds
+  #ifdef MY_DEBUG
+    Serial.print(F("Temperature: "));
+    Serial.print(ahtTemp);
+    Serial.println(F(" +-0.3C"));
+  #endif
+  // static MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
+  send(msgTemp.set(ahtTemp, 1));
+  
+  delay(2000); //measurement with high frequency leads to heating of the sensor, see NOTE
+
+  ahtHumi = aht10.readHumidity(); //read another 6-bytes via I2C, takes 80 milliseconds
+  #ifdef MY_DEBUG
+    Serial.print(F("Humidity: "));
+    Serial.print(ahtHumi);
+    Serial.println(F(" +-2%"));
+  #endif
+  // static MyMessage msgHum(CHILD_ID_HUM,  V_HUM);
+  send(msgHum.set(ahtHumi, 1));
+
+  delay(2000);
+
+  // get the battery Voltage
+  long batteryMillivolts = hwCPUVoltage();
+  float batteryVolts = batteryMillivolts / 1000.0;
+  int batteryPcnt = batteryMillivolts / FULL_BATTERY / 1000.0 * 100 + 0.5;
+  #ifdef MY_DEBUG
+      Serial.print("Battery voltage: ");
+      Serial.print(batteryVolts);
+      Serial.println("V");
+      Serial.print("Battery percent: ");
+      Serial.print(batteryPcnt);
+      Serial.println(" %");
+  #endif
+
+  if (oldBatteryPcnt != batteryPcnt) {
+      sendBatteryLevel(batteryPcnt);
+      oldBatteryPcnt = batteryPcnt;
+      send(msgBatPrefix.set("%"));  // Set custom unit.
+      send(msgBat.set(batteryPcnt, 1));
+      send(msgBatVPrefix.set("V"));  // Set custom unit.
+      send(msgBatV.set(batteryVolts, 1));
+  }
+
+  // Sleep for a while to save energy
+  sleep(UPDATE_INTERVAL);
+}