BeagleBone GPIO with Python Test

bb-python-gpio-test.py

#!/usr/bin/python
import time

# Open up the pins and set mode in/out
# TODO: Error handling
outPin = file("/sys/class/gpio/export", "w")
outPin.write("%d" % (38))
outPin.close()

outPin = file("/sys/class/gpio/gpio38/direction", "w")
outPin.write("out")
outPin.close()

inPin = file("/sys/class/gpio/export", "w")
inPin.write("%d" % (70))
inPin.close()

inPin = file("/sys/class/gpio/gpio70/direction", "w")
inPin.write("in")
inPin.close()

#Open outPin for writing and inPin for reading:
outPin = file("/sys/class/gpio/gpio38/value", "w")
inPin = file("/sys/class/gpio/gpio70/value", "r")

try:
    	while True:
    		inPin.seek(0)
    		if inPin.read() =="1\n":
			print "Button Pressed!\n"
                	outPin.write("1")
                	outPin.flush()
                	time.sleep(1)

                	outPin.write("0")
                	outPin.flush()
# Control+C will get us out of that loop and close the pins so that other apps can use:        		
except KeyboardInterrupt:
        inPin = file("/sys/class/gpio/unexport", "w")
        inPin.write("%d" % (38))
        inPin.close()

	outPin = file("/sys/class/gpio/unexport", "w")
	outPin.write("%d" % (70))
	inPin.close()