ESP32-C6 with LCD16x2 test

ESP32_C6_LCD16x2_test.ino

/*
  Florin Simedru
  Project details at https://blog.automatic-house.ro
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files.
  
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
*/

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ESP32Time.h>
ESP32Time rtc;

// Adresa I2C a LCD-ului
#define I2C_ADDR 0x27 // Adresa I2C a LCD-ului (poate varia)

// Definirea numărului de coloane și rânduri ale LCD-ului
#define LCD_COLUMNS 16
#define LCD_ROWS 2
// Inițializarea LCD-ului cu adresa I2C
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_ROWS);

void setup()
{
  Wire.setPins(6, 7);
  Wire.begin();
  Serial.begin(115200);
  Serial.println("\nI2C Scanner ..");
  
  // Inițializarea LCD-ului
 lcd.init();
 // Activarea iluminării LCD-ului
 lcd.backlight();

  // Afisarea unui mesaj initial
  lcd.setCursor(0, 0);
  lcd.print("LCD initialized!");

  Serial.println("Backpack init'd.");

  lcd.setCursor(0, 0);
  // Print a message to the LCD.
  rtc.setTime(30, 49, 20, 9, 2, 2024);  // 17th Jan 2021 15:24:30
  
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  blink();
  ScanI2C();
}

void ScanI2C() {
  byte error, address;
  int nDevices;

  Serial.println("Scanning...");

  nDevices = 0;
  for(address = 1; address < 127; ++address) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    if (error == 0) {
      Serial.print("Dispozitiv gasit la adresa 0x");
      if (address < 16)
        Serial.print("0");
      Serial.print(address, HEX);
      Serial.println(" !");
      ++nDevices;
    }
    else if (error == 4) {
      Serial.print("Eroare la adresa 0x");
      if (address < 16)
        Serial.print("0");
      Serial.println(address, HEX);
    }
  }
  if (nDevices == 0)
    Serial.println("Niciun dispozitiv I2C găsit\n");
  else
    Serial.println("Scanez de nou\n");
  delay(5000); // Scanează din nou după 5 secunde
}
// the loop function runs over and over again forever
void blink() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(100);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(100);                       // wait for a second
}

String local_time() {
 // Obținerea timpului curent
 return rtc.getTime("%H:%M:%S");
}

void loop()
{
  // set cursor to first column, first row
  lcd.setCursor(0, 0);
  // print message
  lcd.print("Hello, World!");
  delay(1000);
  // clears the display to print new message
  lcd.clear();
  // set cursor to first column, second row
  lcd.setCursor(0,1);
  lcd.print(local_time());
  delay(1000);
  lcd.clear();  
}