// Question: 
//   Does the ESP32 give a warning,
//   when there is a shortcircuit on the I2C bus ?
// Answer:
//   No.


#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() 
{
  Serial.begin(115200);
  Serial.println("------------------------------------");
  Serial.println("Test a short circuit on the I2C bus.");
  Serial.println("Use the switches.");

  lcd.init();
  lcd.backlight();

  lcd.setCursor(0, 0);
  lcd.print("Short Circuit ?");
}


void loop() 
{
  lcd.setCursor(0, 1);
  lcd.print(millis());
  delay(250);
}