K210 example 2: The button is interrupted, and the serial port information responds when pressed

from fpioa_manager import fm
import time
from Maix import GPIO
#映射引脚，K210开发板亚博的，是按键是IO16---将芯片16引脚，映射到HS0引脚，后面用HS0控制芯片16引脚
fm.register(16, fm.fpioa.GPIOHS0, force=True)


#测试代码中断
def test_irq(pin_num):
    print("key", pin_num)


#设置输入模式
key=GPIO(GPIO.GPIOHS0, GPIO.IN, GPIO.PULL_NONE)

#对应中断服务函数，
key.irq(test_irq, GPIO.IRQ_FALLING , GPIO.WAKEUP_NOT_SUPPORT, 7)


for i in range(20):
    print('key.value(): ', key.value())
    time.sleep_ms(500)

key.disirq()
fm.unregister(16)