// https://wokwi.com/projects/290883003139228169
// https://wokwi.com/makers/urish

#include <SoftwareSerial.h>

#define SEN_PIN   A2   // Sensor
#define LED_PIN   PB1

#define SERIAL_TX PB3
#define SERIAL_RX PB0

#define LED_DELAY 1000

bool switchLED = false;
unsigned long timerLED = 0;

int sensorValue = -1;

SoftwareSerial mySerial(SERIAL_RX, SERIAL_TX);

void setup() {
  mySerial.begin(9600);
  pinMode(SEN_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  analogWrite(SEN_PIN, 1);
  mySerial.println("Start");
}

/*
void loop() {
  sensorValue = analogRead(SEN_PIN);

  if (millis() - timerLED >= LED_DELAY) {
    timerLED = millis();

    mySerial.print("Sensor Value: ");
    mySerial.print(sensorValue);
    mySerial.println();

    switchLED = !switchLED;
    digitalWrite(LED_PIN, switchLED ? HIGH : LOW);
  }
}
*/

void loop() {
  if (mySerial.available() > 0) {
    String command = mySerial.readString(); // read the incoming command
    if (command.startsWith("READ")) {
      int analogPort = command.substring(5).toInt(); // extract the analog port number from the command
      int value = analogRead(analogPort); // read the value from the analog port
      String json = "{\"value\":" + String(value) + "}"; // format the value as a json string
      mySerial.println(json); // print the json string
    }
  }
}