from machine import PWM, Pin
import time

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

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")
    
finally:
   pwm.duty_u16(0)
   pwm1.duty_u16(0)