# CircuitPython Blink Example

import pwmio
import board

pins = [board.GP5, board.GP6]
index = 0
pwm = pwmio.PWMOut(pins[index], frequency=1800)  # output on LED pin with default of 500Hz

while True:
    for cycle in range(0, 65535//2):  # Cycles through the full PWM range from 0 to 65535
        pwm.duty_cycle = cycle  # Cycles the LED pin duty cycle through the range of values
        
    for cycle in range(65534//2, 0, -1):  # Cycles through the PWM range backwards from 65534 to 0
        pwm.duty_cycle = cycle  # Cycles the LED pin duty cycle through the range of values
    pwm.deinit()
    index += 1
    pwm = pwmio.PWMOut(pins[index%2])