ESP32-Sensor.cpp

/* 
  Fixed Sketch for Arduino IoT Cloud Thing "security_KerD"
  https://create.arduino.cc/cloud/things/9e615aa7-4e71-4b28-8ffd-43d3f9e1a5d9
*/
#include "thingProperties.h"

// Pin definitions
int microwavePin = 3;   // Presence/microwave sensor on digital pin 3
int LedPin = 10;        // LED on digital pin 10

// Activity counter variables
// int activityCount = 0;
unsigned long lastResetTime = 0;
const unsigned long RESET_INTERVAL = 3600000; // 1 hour in milliseconds
bool lastPresenceState = false;

void setup() {
  // Initialize serial
  Serial.begin(9600);
  delay(1500); 
  
  // Initialize Cloud properties
  initProperties();
  
  // Set pin modes
  pinMode(microwavePin, INPUT);
  pinMode(LedPin, OUTPUT);
  
  // Connect to Arduino IoT Cloud
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
  
  // Debug info
  setDebugMessageLevel(2);
  ArduinoCloud.printDebugInfo();
  
  // Initialize timer
  lastResetTime = millis();
}

void loop() {
  ArduinoCloud.update();
  
  // Read presence sensor from pin
  bool currentPresence = digitalRead(microwavePin);
  presence = currentPresence; // Update cloud variable
  presenceInt = currentPresence;
  
  // Detect rising edge (presence sensor turns ON)
  if (currentPresence && !lastPresenceState) {
    activityCount++;
    Serial.print("Activity detected! Total count: ");
    Serial.println(activityCount);
  }
  
  // Update last state
  lastPresenceState = currentPresence;
  
  // Check if one hour has passed to reset the counter
  if (millis() - lastResetTime >= RESET_INTERVAL) {
    activityCount = 0;
    lastResetTime = millis();
    Serial.println("Activity counter reset after 1 hour");
  }
  
  // Control LED from IoT Cloud variable
  digitalWrite(LedPin, lED ? HIGH : LOW);
  
  // Debug info every few seconds (optional - remove if too verbose)
  static unsigned long lastPrint = 0;
  if (millis() - lastPrint >= 5000) {
    Serial.print("Activities in last hour: ");
    Serial.println(activityCount);
    lastPrint = millis();
  }
}

/*
  Cloud variable callback functions
*/

void onLEDChange()  {
  // Reflect LED control immediately when changed from dashboard
  digitalWrite(LedPin, lED ? HIGH : LOW);
}

void onPresenceChange()  {
  // This callback is triggered when presence changes from the cloud dashboard
  // The main detection logic is in loop() when reading from the physical pin
}
/*
  Since ActivityCount is READ_WRITE variable, onActivityCountChange() is
  executed every time a new value is received from IoT Cloud.
*/
void onActivityCountChange()  {
  // Add your code here to act upon ActivityCount change
}
/*
  Since PresenceInt is READ_WRITE variable, onPresenceIntChange() is
  executed every time a new value is received from IoT Cloud.
*/
void onPresenceIntChange()  {
  // Add your code here to act upon PresenceInt change
}