from machine import Pin,PWM
import time

#define led
led_pins = [Pin(5, Pin.OUT),Pin(8, Pin.OUT),Pin(11, Pin.OUT),Pin(13, Pin.OUT)]
pwm_leds = [PWM(pin) for pin in led_pins]

#intiliaze PWM frequency
for pwm in pwm_leds:
    pwm.freq(1000)      #led blink for 0.0005 seconds at 50% duty 
    pwm.duty_u16(0)     #start with led off

def set_brightness(percent):
    duty = int((percent/100) * 65535)     #convert to percentage to duty cycle
    for pwm in pwm_leds:
        pwm.duty_u16(duty)
    print(f"set brightness to {percent}%")

while(1):
    command = input("Enter command (off, 25, 50, 75, 100): ").strip() #get command from user input

    if command == "off":
        set_brightness(0) #Turn off all leds
        print("All leds are off")

    elif command == "25":
        set_brightness(25)
    elif command == "50":
        set_brightness(50)
    elif command == "75":
        set_brightness(75)
    elif command == "100":
        set_brightness(100)
    else:
        print("Invalid command. Please use: off,25,50,75,100")