pikascript/examples/TemplateDevice/gpio_cb.py

import TemplateDevice

io1 = TemplateDevice.GPIO()
io1.setPin('PA8')
io1.setMode('in')
io1.enable()

EVENT_SIGAL_IO_RISING_EDGE = 0x01
EVENT_SIGAL_IO_FALLING_EDGE = 0x02

def callBack1(signal):
    if signal == EVENT_SIGAL_IO_RISING_EDGE:
        print('get rising edge!')
    elif signal == EVENT_SIGAL_IO_FALLING_EDGE:
        print('get falling edge!')

io1.addEventCallBack(callBack1)