import machine
import time

ANALOG_PIN = 26  
BUTTON_PIN = 16 
last_button_press_time = 0

def read_analogue_voltage(pin):
    sum_values = 0
    num_samples = 16 

    for _ in range(num_samples):
        sum_values += pin.read_u16()  
    average_value = (sum_values / num_samples) * 3.3 / 65535  
    voltage_mv = int(average_value * 1000) 
    print("Analog Voltage: {} mV".format(voltage_mv)) 

def setup():
    global last_button_press_time

    last_button_press_time = 0

    adc = machine.ADC(machine.Pin(ANALOG_PIN))
    button = machine.Pin(BUTTON_PIN, machine.Pin.IN, machine.Pin.PULL_UP)

    while True:
        if button.value() == 0: 
            current_time = time.ticks_ms()
            if current_time - last_button_press_time > 200:  
                read_analogue_voltage(adc)
                last_button_press_time = current_time

        time.sleep_ms(10) 
if __name__ == '__main__':
    setup()