from machine import I2C,SoftI2C,Pin,PWM
from utime import sleep
from i2c_lcd import I2cLcd
import random
import time

print("Hello, ESP32!")

# Define Pin Out
relay1 = Pin(12, Pin.OUT)
relay2 = Pin(14, Pin.OUT)
relay3 = Pin(27, Pin.OUT)
relay4 = Pin(26, Pin.OUT)
#button = Pin(button_pin, Pin.IN, Pin.PULL_UP) # Use Pin.PULL_DOWN for a pull-down resistor

# I2C Display
DEFAULT_I2C_ADDR=0x27
i2c=SoftI2C(scl=Pin(22),sda=Pin(21),freq=1000)
lcd=I2cLcd(i2c,DEFAULT_I2C_ADDR,2,16)
lcd.putstr("Welcome to ESP32!")

while True:
    #if button.value() == 0: # Button is pressed (active low)              
        my_list = [1, 2, 3, 4]
        random_element = random.choice(my_list)
        #print(random_element + ".value(1)")
        lcd.clear()  # Clear the entire display
        if random_element == 1:
            relay1.value(1)  # Turn LED on
            relay2.value(0)  # Turn LED off
            relay3.value(0)  # Turn LED off
            relay4.value(0)  # Turn LED off
            lcd.putstr("RELAY1 ON")
            #sleep(5)
        if random_element == 2:
            relay2.value(1)  # Turn LED on
            relay1.value(0)  # Turn LED off
            relay3.value(0)  # Turn LED off
            relay4.value(0)  # Turn LED off
            lcd.putstr("RELAY2 ON")
            #sleep(5)
        if random_element == 3:
            relay3.value(1)  # Turn LED on
            relay1.value(0)  # Turn LED off
            relay2.value(0)  # Turn LED off
            relay4.value(0)  # Turn LED off         
            lcd.putstr("RELAY3 ON")
            #sleep(5)
        if random_element == 4:
            relay4.value(1)  # Turn LED on
            relay1.value(0)  # Turn LED off
            relay2.value(0)  # Turn LED off
            relay3.value(0)  # Turn LED off
            lcd.putstr("RELAY4 ON")        
            #sleep(5)
        else:
            relay1.value(0)  # Turn LED off
            relay2.value(0)  # Turn LED off
            relay3.value(0)  # Turn LED off
            relay4.value(0)  # Turn LED off