from machine import Pin, PWM, Timer

InputPin1 = Pin(22, Pin.IN, Pin.PULL_UP)
InputPin2 = Pin(26, Pin.IN, Pin.PULL_UP)
InputPin3 = Pin(19, Pin.IN, Pin.PULL_UP)
InputPin4 = Pin(10, Pin.IN)
OutputPin1 = Pin(15, Pin.OUT)
OutputPin2 = Pin(14, Pin.OUT)

PWM_pin = PWM(Pin(16))
PWM_pin.freq(1400)

led1_state = False
initial_duty = 1000

debounce_timer = Timer()
button_state1 = 0
button_state2 = 0
button_state3 = 0

def motion_detected_handler(pin):
    if pin.value():
        print("Mvement simulation started")
        OutputPin2.on()
    else:
        print("Movement simulation finished")
        OutputPin2.off()

def handle_button1():
    global led1_state
    led1_state = not led1_state
    OutputPin1.value(led1_state)

def handle_button2():
    current_duty = PWM_pin.duty_u16()
    new_duty = current_duty + 5000
    new_duty = min(new_duty, 75535)
    PWM_pin.duty_u16(new_duty)
    print("Frequency updated to "+ str(new_duty))

def handle_button3():
    current_duty = PWM_pin.duty_u16()
    new_duty = current_duty - 5000
    new_duty = max(new_duty, 0)
    PWM_pin.duty_u16(new_duty)
    print("Frequency updated to "+ str(new_duty))

def handle_buttons(timer):
    global button_state1, button_state2, button_state3
    if InputPin1.value()==0:
        button_state1 += 1
    else:
        button_state1 = 0
        
    if InputPin2.value()==0:
        button_state2 += 1
    else:
        button_state2 = 0

    if InputPin3.value()==0:
        button_state3 += 1
    else:
        button_state3 = 0

    if button_state1 == 4:
      handle_button1()
    if button_state2 == 4:
      handle_button2()
    if button_state3 == 4:
      handle_button3()
    
InputPin4.irq(handler=motion_detected_handler, trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING)
debounce_timer.init(freq=40, mode=Timer.PERIODIC, callback=handle_buttons)