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  Args:
    configuration: dictionary of configuration settings.
    last_logged: epoch at which temperature was last logged.

  Returns:
    Epoch at which temperature was last logged.
  """
  if RASPBERRY_PI:
    temperature = gpiozero.CPUTemperature().temperature
    if temperature > TEMP_FAN_TURN_ON_CELSIUS:
      UpdateStatusLight(GPIO_FAN, True, 'Temperature: %.1f' % temperature)
    elif temperature < TEMP_FAN_TURN_OFF_CELSIUS:
      UpdateStatusLight(GPIO_FAN, False)

    now = time.time()
    if (configuration.get('log_temperature') and
        now - last_logged > TEMPERATURE_LOG_FREQUENCY_SECONDS):
      line = ','.join([str(now), str(temperature)])
      with open(TEMPERATURE_LOG, 'a') as f:
        f.write(line)
      last_logged = now
  return last_logged


pin_values = {}  # caches last set value
def SetPinMode():
  """Initialize output GPIO pins for output on Raspberry Pi."""
  global pin_values

  if RASPBERRY_PI:
    RPi.GPIO.setmode(RPi.GPIO.BCM)

  pins = (
      GPIO_ERROR_VESTABOARD_CONNECTION, GPIO_ERROR_FLIGHT_AWARE_CONNECTION,
      GPIO_ERROR_ARDUINO_SERVO_CONNECTION, GPIO_ERROR_ARDUINO_REMOTE_CONNECTION,
      GPIO_ERROR_BATTERY_CHARGE, GPIO_FAN, GPIO_UNUSED_1, GPIO_UNUSED_2)

  for pin in pins:
    initial_state = pin[5]
    pin_values[pin[0]] = initial_state  # Initialize state of pins




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  Args:
    configuration: dictionary of configuration settings.
    last_logged: epoch at which temperature was last logged.

  Returns:
    Epoch at which temperature was last logged.
  """
  if RASPBERRY_PI:
    temperature = gpiozero.CPUTemperature().temperature
    if temperature > TEMP_FAN_TURN_ON_CELSIUS:
      UpdateStatusLight(GPIO_FAN, True, 'Temperature: %.1f' % temperature)
    elif temperature < TEMP_FAN_TURN_OFF_CELSIUS:
      UpdateStatusLight(GPIO_FAN, False)

    now = time.time()
    if (configuration.get('log_temperature') and
        now - last_logged > TEMPERATURE_LOG_FREQUENCY_SECONDS):
      line = ','.join([str(now), str(temperature)])
      with open(TEMPERATURE_LOG, 'a') as f:
        f.write('%s\n' % line)
      last_logged = now
  return last_logged


pin_values = {}  # caches last set value
def SetPinMode():
  """Initialize output GPIO pins for output on Raspberry Pi."""
  global pin_values

  if RASPBERRY_PI:
    RPi.GPIO.setmode(RPi.GPIO.BCM)

  pins = (
      GPIO_ERROR_VESTABOARD_CONNECTION, GPIO_ERROR_FLIGHT_AWARE_CONNECTION,
      GPIO_ERROR_ARDUINO_SERVO_CONNECTION, GPIO_ERROR_ARDUINO_REMOTE_CONNECTION,
      GPIO_ERROR_BATTERY_CHARGE, GPIO_FAN, GPIO_UNUSED_1, GPIO_UNUSED_2)

  for pin in pins:
    initial_state = pin[5]
    pin_values[pin[0]] = initial_state  # Initialize state of pins




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