pt bia

#include <EEPROM.h>
#define sensorPin A0
#define mesMaxLenght 32
#define nrMessages 10

const int redPin = 3;
const int greenPin = 5;
const int bluePin = 6;
int id;
int messagePoz;
int sensorPin1 = 4;
int sensorValue1 = 0;  // variable to store the value coming from the sensor
byte value;
int lastSent=0;
char message[mesMaxLenght];
String mesaj;
int eeAddress = 0;   //Location we want the data to be put.
unsigned int numar_CAN;
int voltageValue, temperatureRead;


void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
  EEPROM.get(mesMaxLenght * (nrMessages - 1), messagePoz); // luam pozitia la care am ajuns ultima data asta e o frmula matematica
  eeAddress = messagePoz * mesMaxLenght ; // aflam adresa din eeprom la care trebuie sa prelucram
}

void displayMes(){
  int eeAddress = 0;

  while(eeAddress < mesMaxLenght * nrMessages){
     EEPROM.get(eeAddress, message);
     if(message[0] == '\0') return; // daca nu este salvat nimic la adresa parasim functia
     Serial.println(message);
     eeAddress += mesMaxLenght;
  }
}

void RGB(){
  int red = Serial.parseInt();
    int green = Serial.parseInt();
    int blue = Serial.parseInt();
      analogWrite(redPin, red);
      analogWrite(greenPin, green);
      analogWrite(bluePin, blue);
      Serial.print(red, HEX);
      Serial.print(green, HEX);
      Serial.println(blue, HEX);
}
void turnLed(){
      while(Serial.available()  < 1) delay(1);// asteptams a se trimita date
       int buffer = Serial.read();
    while( buffer == 32) buffer = Serial.read(); // pentru a evita punctele albe

       if( buffer > 96) buffer -= 32; // aici e transformare din litera mica in mare ca sa puteti introduce si a, si A
      if(buffer == 'A')
             digitalWrite(LED_BUILTIN, HIGH);
      else if(buffer == 'S')
             digitalWrite(LED_BUILTIN, LOW);
      else Serial.println("Valoare invalida");
       while(Serial.available())buffer = Serial.read();// golim buffer

    }

void temp(){
  while(1){
     if(millis() >= lastSent +1000){
    // Get the voltage reading from the LM35
  int reading = analogRead(sensorPin);

  // Convert that reading into voltage
  float voltage = reading * (5.0 / 1024.0);

  // Convert the voltage into the temperature in Celsius
  float temperatureC = voltage * 100;

  // Print the temperature in Celsius
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.print("\xC2\xB0"); // shows degree symbol
  Serial.print("C  |  ");
  lastSent = millis();
  }
}
}

  void readEEPROM(){
      Serial.println("Introduceti mesaj: ");
      while(Serial.available()  < 1) delay(1); // asteptam introdcere de mesaj
      mesaj = Serial.readString();
      mesaj.toCharArray(message, mesMaxLenght);
      EEPROM.put(eeAddress, message);
      eeAddress += mesMaxLenght;
      messagePoz++;
      if(messagePoz == nrMessages)
      {
        messagePoz = 0;
        eeAddress = 0;
      }
      EEPROM.put(mesMaxLenght * (nrMessages - 1), messagePoz);
     Serial.println("Mesaj salvate in EEPROM: ");
     displayMes();
  }

void loop() {

  if (Serial.available()){

     id = Serial.parseInt();
    switch(id){
      case 1: turnLed();
             break;
      case 2: RGB();
             break;
      case 3: temp();
            break;
       case 4:
      while(1)
      {
    // read the value from the sensor:
     sensorValue1 = digitalRead(sensorPin1);
     Serial.println(sensorValue1);

      }
      break;
case 5:
     readEEPROM();
     break;
default:
    Serial.println("Valoare invalida");
      break;
    }
  }
 delay(1000);
}