from machine import PWM,Pin
import time

pwm = PWM(Pin(21))
pwm1 = PWM(Pin(19))
pwm.freq(1000)
pwm1.freq(1000)
button_pin = machine.Pin(15,Pin.IN,Pin.PULL_UP)
button_state =False

def run_while_loop():
    while True:
       for i in range(0,65025,100):
            pwm.duty_u16(i)
            print(pwm.duty_u15())
            time.sleep_ms(10)
            pwm.duty_u16(0)
        
        for i in range(0,65025,-100):
            pwm.duty_u16(i)
            print(pwm.duty_u15())
            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.value(False)
     pwm1.value(False)