from machine import Pin,PWM
from utime import sleep

red = PWM(Pin(13))
green = PWM(Pin(14))
blue = PWM(Pin(15))

red.freq(1000)
green.freq(1000)
blue.freq(1000)

def interval_mapping(x, in_min , in_max , out_min , out_max):
    return (x - in_min)*(out_max - out_min)/(in_max - in_min)+out_min

def color_to_duty(rgb_value):
    rgb_value = int(interval_mapping(rgb_value,0,255,0,65535))
    return rgb_value

def color_set(red_value,green_value,blue_value):
    red.duty_u16(color_to_duty(red_value))
    green.duty_u16(color_to_duty(green_value))
    blue.duty_u16(color_to_duty(blue_value))
    
color_set(255,255,255)