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 esp-extra-scripts

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switch.py

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"""

switch.py

=========

Light up some leds when the USR switch on the pyboard is pressed.

Example Usage::

Micro Python v1.0.1 on 2014-05-12; PYBv1.0 with STM32F405RG

Type "help()" for more information.

>>> import switch

>>> switch.run_loop()

Loop started.

Press Ctrl+C to break out of the loop.

"""

import pyb

switch = pyb.Switch()

red_led = pyb.LED(1)

green_led = pyb.LED(2)

orange_led = pyb.LED(3)

blue_led = pyb.LED(4)

all_leds = (red_led, green_led, orange_led, blue_led)

def run_loop(leds=all_leds):

"""

Start the loop.

:param `leds`: Which LEDs to light up upon switch press.

:type `leds`: sequence of LED objects

"""

print('Loop started.\nPress Ctrl+C to break out of the loop.')

while 1:

try:

if switch():

[led.on() for led in leds]

else:

[led.off() for led in leds]

except OSError: # VCPInterrupt # Ctrl+C in interpreter mode.

break

if __name__ == '__main__':

run_loop()