ptt.py

# This file is executed on every boot (including wake-boot from deepsleep)
#import esp
#esp.osdebug(None)
import uos, machine
#uos.dupterm(None, 1) # disable REPL on UART(0)
import gc
#import webrepl
#webrepl.start()
gc.collect()

from machine import Pin, ADC
from time import sleep

led = Pin(2, Pin.OUT)
ptt = ADC(0)

led(1)

transmitting = False

while True:
    ptt_value = ptt.read()
    if ptt_value < 30:
        if transmitting == False:
            transmitting = True
            led(0)
            print("started transmission")
    else:
        if transmitting == True:
            transmitting = False
            led(1)
            print("ended transmission")
      
    sleep(0.2)