from machine import PWM, Pin
import time


button_pin = machine.Pin(17,Pin.IN, Pin.PULL_UP)
button_state = False
pwm = PWM(Pin(21))
pwm1 = PWM(Pin(18))
pwm.freq(1000)
pwm1.freq(1000)


def run_while_loop():
  while True:
    for i in range(0, 65025, 100):
        pwm.duty_u16(i)
        print(pwm.duty_u16())
        time.sleep_ms(10)
        pwm.duty_u16(0)
    for i in range(65025, 0, -100):
        pwm1.duty_u16(i)
        print(pwm1.duty_u16())
        time.sleep_ms(10)
        pwm1.duty_u16(0)

try:
    while True:
        while button_pin.value():
            pass
        run_while_loop()

except KeyboardInterrupt:
    print("程序被用戶中斷")