/**
 * ESP32 zmpt101b AC Voltage Measurement
 * Using the ZMPT101B library
 */

#include <ZMPT101B.h>

// Define sensitivity - you may need to calibrate this value
#define SENSITIVITY 500.0f

// Define the pin connected to ZMPT101B sensor output
#define ZMPT_PIN 34

// Create an instance of the ZMPT101B class - using pin 34 and 50Hz frequency
ZMPT101B voltageSensor(ZMPT_PIN, 50.0);

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
  delay(1000);
  Serial.println("\nZMPT101B AC Voltage Measurement");
  
  // Set sensitivity value
  voltageSensor.setSensitivity(SENSITIVITY);
  
  Serial.println("Sensor configured and ready");
  delay(2000);
}

void loop() {
  // Read the RMS AC voltage
  float voltage = voltageSensor.getRmsVoltage();
  
  // Display the results
  Serial.print("AC Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");
  
  // Additional debug information
  float rawVoltage = analogRead(ZMPT_PIN) * 3.3 / 4095.0;
  Serial.print("Raw ADC voltage: ");
  Serial.print(rawVoltage);
  Serial.println(" V");
  
  // Display information about the simulated voltage
  Serial.println("------------------------------");
  
  // Wait before taking another measurement
  delay(1000);
}