// Define pins for PIR sensor and LDR
#define PIR_PIN PA1
#define LDR_ANALOG_PIN A1
#define LDR_DIGITAL_PIN PB0

void setup() {
  // Initialize serial communication at 9600 baud rate
  Serial.begin(9600);

  // Initialize analog input pin for TMP36 sensor (PA0)
  pinMode(A0, INPUT);

  // Initialize PIR sensor pin (PA1)
  pinMode(PIR_PIN, INPUT);

  // Initialize analog input pin for LDR sensor (A1)
  pinMode(LDR_ANALOG_PIN, INPUT);

  // Initialize digital input pin for LDR (D0)
  pinMode(LDR_DIGITAL_PIN, INPUT);
}

void loop() {
  // Read analog value from TMP36 sensor connected to A0
  int sensorValue = analogRead(A0);
  
  // Convert analog value to voltage (STM32 operates at 3.3V)
  float voltage = sensorValue * (3.3 / 1023.0);
  
  // Convert voltage to temperature (for TMP36 sensor)
  float temperature = (voltage - 0.5) * 100.0;

  // Read PIR sensor value
  int pirState = digitalRead(PIR_PIN);

  // Read LDR analog value from A1
  int ldrAnalogValue = analogRead(LDR_ANALOG_PIN);

  // Read LDR digital value from D0
  int ldrDigitalValue = digitalRead(LDR_DIGITAL_PIN);

  // Print temperature to the UART (Serial monitor)
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  // Print LDR analog value (light intensity)
  Serial.print("LDR Analog Value: ");
  Serial.println(ldrAnalogValue);

  // Print LDR digital value (threshold detection)
  Serial.print("LDR Digital Value: ");
  if (ldrDigitalValue == HIGH) {
    Serial.println("Light Detected");
  } else {
    Serial.println("No Light Detected");
  }

  // Check PIR sensor state and print motion detection status
  if (pirState == HIGH) {
    Serial.println("Motion Detected!");
  } else {
    Serial.println("No Motion");
  }

  // Delay for a while before reading the next value
  delay(1000);  // 1 second delay
}