arduino-fridge-powercontrol/main/main.ino

#include "ArduinoJson.h"

int analogPin = 3;
int data = 0;
char userInput;


void setup() {
  // put your setup code here, to run once:
  pinMode(LED_BUILTIN, OUTPUT);


  
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:

if(Serial.available()>0) {

    //userInput = Serial.read();

    // String input;

    StaticJsonDocument<96> doc;
    // {  "command": "switch",  "arg": "one",  "state": "off"}
    DeserializationError error = deserializeJson(doc, Serial);

    if (error) {
      Serial.print(F("deserializeJson() failed: "));
      Serial.println(error.f_str());
      return;
    }

    const char* command = doc["command"]; // "switch"
    const char* arg = doc["arg"]; // "one"
    const char* state = doc["state"]; // "off"
    

    Serial.print(command);
    Serial.print(" - ");
    Serial.print(arg);
    Serial.print(" - ");
    Serial.println(state);

    if(userInput == 'g') {

      data = analogRead(analogPin);
/*
      digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(200);                       // wait for a second
      digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
      delay(200);   
      digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(200);                       // wait for a second
      digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
      delay(200);
      digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(200);                       // wait for a second
      digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
      delay(200);

      */
      //delay(2000);
      Serial.println(data);
    }
  }
  
}