import serial
import RPi.GPIO as GPIO
from time import sleep
import os

for i in os.listdir("/dev"):
  if i[:6] == "ttyAMA":
    ser=serial.Serial("/dev/{}".format(i),9600)

def blink(pin):
  GPIO.output(pin,GPIO.HIGH)
  sleep(1)
  GPIO.output(pin,GPIO.LOW)
  sleep(1)
  return

def on(pin):
  GPIO.output(11,GPIO.HIGH)
  GPIO.output(13,GPIO.HIGH)

  if pin == 0:
    return
  else:
    GPIO.output(pin,GPIO.LOW)


GPIO.setmode(GPIO.BOARD)
GPIO.setup(11, GPIO.OUT)
GPIO.setup(13, GPIO.OUT)