# import modules
########################################
from machine import Pin, PWM
from time import sleep

# set up pins
########################################
red = PWM(Pin(9)) 
green = PWM(Pin(8))  
blue = PWM(Pin(7))  

# Setup for each colour
frequency = 5000
red_pwm.freq (frequency) 
green_pwm.freq (frequency)  
blue_pwm.freq (frequency)  

red_pwm.start(0)
green_pwm.start(0)
blue_pwm.start(0)

#Set color by changing duty cycle
def set_color(red, green, blue):
    red_pwm.ChangeDutyCycle(red / 255 * 100)
    green_pwm.ChangeDutyCycle(green / 255 * 100)
    blue_pwm.ChangeDutyCycle(blue / 255 * 100)

try:
    while True:
        user_input = input("Enter RGB values (e.g. 255,0,28): ")
        try:
            r, g, b, = map(int, user_input.split(","))

            if 0 <= r <= 255 and 0 <= g <= 255 and 0 <= b <= 255:
                set_color(r, g, b)
            else: print("Error, RGB values must be between 0 and 255")
        except ValueError:
            print("Error, Please enter valid RGB values in the format, r,g,b.")
        except KeyboardInterrupt:
            print("\nExiting Program...")
        finally:
            red_pwm.stop()
            green_pwm.stop()
            blue_pwm.stop()