from machine import Pin, PWM
import time

# Initialize PWM for each color channel of the RGB LED
red = PWM(Pin(15), freq=1000)   # Red channel on GPIO 15
green = PWM(Pin(2), freq=1000)  # Green channel on GPIO 2
blue = PWM(Pin(4), freq=1000)   # Blue channel on GPIO 4

# Function to set RGB LED color
def set_color(r, g, b):
    """
    Set the color of the RGB LED.
    :param r: Red intensity (0-1023)
    :param g: Green intensity (0-1023)
    :param b: Blue intensity (0-1023)
    """
    red.duty(r)
    green.duty(g)
    blue.duty(b)

# Function to gradually change color
def color_transition():
    while True:
        # Gradually transition through colors (Red -> Green -> Blue)
        for i in range(1024):
            set_color(i, 0, 0)  # Fade Red in
            time.sleep(0.01)
        for i in range(1024):
            set_color(1023 - i, i, 0)  # Red to Green transition
            time.sleep(0.01)
        for i in range(1024):
            set_color(0, 1023 - i, i)  # Green to Blue transition
            time.sleep(0.01)
        for i in range(1024):
            set_color(i, 0, 1023 - i)  # Blue to Red transition
            time.sleep(0.01)

# Main function
if __name__ == '__main__':
    color_transition()  # Start color transition effect