import machine
import time

class Button():
    def __init__(self,pin,onPushDown = None, onPushUp = None,debounceTimeMs = 50,inputMode = machine.Pin.IN,inverted = False):
        self.pin = machine.Pin(pin,inputMode)
        self.pressedTime = -debounceTimeMs
        self.debounceTimeMs = int(debounceTimeMs)
        self.onPushDown = onPushDown
        self.onPushUp = onPushUp
        self.pin.irq(trigger=machine.Pin.IRQ_RISING|machine.Pin.IRQ_FALLING , handler=self._IRQ)
        self.value = self.pin.value()
        self.inverted = inverted

    def _IRQ(self,p):
        new_value = self.pin.value()
        if (self.value != new_value):
            self.value = new_value     
            time_ms = time.ticks_ms()
            if ((self.pressedTime+self.debounceTimeMs) < time_ms):
                self.pressedTime = time_ms
                if (new_value ^ self.inverted): 
                    if (self.onPushUp != None):
                        self.onPushUp()
                else:
                    if (self.onPushDown != None):
                        self.onPushDown()
            else:
                pass