from machine import Pin
import time
import functions

MAX_OUTPUT_FREQUENCY = 3500

# Pin declarations
led_red = Pin(28, Pin.OUT)
led_yel = Pin(27, Pin.OUT)
led_grn = Pin(22, Pin.OUT)

while True:
    status, val = functions.get_potentiometer_val(pin=26)
    if status is False:
        led_red.on()
        continue

    freq = functions.convert_to_frequency(val) * -1
    if freq < 0:
        led_yel.on()
        continue

    filtered_freq = functions.low_pass_filter(freq)
    if filtered_freq > MAX_OUTPUT_FREQUENCY:
        led_grn.on()
        functions.buzz_frequency(0)
        break
    else:
        led_grn.off()
        functions.buzz_frequency(filtered_freq)

    time.sleep(.01)