doors: Blink LEDs when exceptions are thrown
This gives visual feedback that something has gone horribly, horribly wrong. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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25
doors.py
25
doors.py
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@ -70,8 +70,19 @@ def close_door():
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GPIO.output(GREEN_LED, OFF)
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GPIO.output(YELLOW_LED, OFF);
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# Turn all LEDs on
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def leds_on():
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GPIO.output(RED_LED, ON)
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GPIO.output(GREEN_LED, ON)
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GPIO.output(YELLOW_LED, ON)
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# Turn all LEDs off
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def leds_off():
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GPIO.output(RED_LED, OFF)
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GPIO.output(GREEN_LED, OFF)
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GPIO.output(YELLOW_LED, OFF)
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close_door()
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GPIO.output(YELLOW_LED, OFF)
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@ -117,14 +128,24 @@ def read_rfid():
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RFID_SERIAL.flushInput() # ignore errors, no data
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def blink_leds():
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for i in range(5):
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if (i % 2) == 0:
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leds_on()
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else:
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leds_off()
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time.sleep(1)
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close_door()
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def main():
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while True:
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try:
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read_rfid()
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except Exception as e:
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door_close()
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print(e)
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close_door()
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blink_leds()
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if __name__ == "__main__": main()
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