###########################################################################
# Setup code goes below, this is called once at the start of the program: #
###########################################################################
import time
import machine

button = machine.Pin(0) # 0 = pressed
relay = machine.Pin(12, machine.Pin.OUT) #relay.on(), relay.off()
led = machine.Pin(13, machine.Pin.OUT) #led.value(1) = off, led.value(0) = on
pin = machine.Pin(14, machine.Pin.IN, machine.Pin.PULL_UP) #extra pin on header
tx = machine.Pin(1, machine.Pin.IN, machine.Pin.PULL_UP) #tx pin on header
#rx = machine.Pin(3, machine.Pin.IN, machine.Pin.PULL_UP) #rx pin on header

status = 0
timer = 0
timeout = 30

###################################################################
# Loop code goes inside the loop here, this is called repeatedly: #
###################################################################
while True:
  time.sleep(1.0)

  #Check Inputs
  if pin.value():
	if tx.value():
		status = 0 #Empty
	else:
		status = 1 
  else:
	if tx.value():
		status = 2
	else:
		status = 3 #Full

  #Set Outputs
  if status == 0 and timer == 0:
	print('Turning relay on')
	relay.on()
  elif status == 1:
	print('status = 1')
  elif status == 2:
	print('status = 2')
  elif status == 3:
	print('Turning relay off')
	relay.off()
	timer = 0
  else:
	print('Something when wrong')

  #Timeout
  if relay.value():
	timer += 1
	if timer > timeout: relay.off()