GPIO Button Adapter Demo

gpiobuttons.py

#!/usr/bin/env python

import time
import scrollphathd
import RPi.GPIO as GPIO

# Set up GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(5, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(6, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(12, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(13, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(16, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(26, GPIO.IN, pull_up_down=GPIO.PUD_UP)

# Button callback
def my_callback(channel):
    scrollphathd.clear()

    if(channel == 5):
        scrollphathd.write_string("1")
    elif(channel == 6):
        scrollphathd.write_string("2")
    elif(channel == 12):
        scrollphathd.write_string("3")
    elif(channel == 13):
        scrollphathd.write_string("4")
    elif(channel == 16):
        scrollphathd.write_string("5")
    elif(channel == 26):
        scrollphathd.write_string("6")
    else:
        scrollphathd.write_string("0")

    scrollphathd.show()

# Wait for button presses
GPIO.add_event_detect(5, GPIO.FALLING, callback=my_callback, bouncetime=300)
GPIO.add_event_detect(6, GPIO.FALLING, callback=my_callback, bouncetime=300)
GPIO.add_event_detect(12, GPIO.FALLING, callback=my_callback, bouncetime=300)
GPIO.add_event_detect(13, GPIO.FALLING, callback=my_callback, bouncetime=300)
GPIO.add_event_detect(16, GPIO.FALLING, callback=my_callback, bouncetime=300)
GPIO.add_event_detect(26, GPIO.FALLING, callback=my_callback, bouncetime=300)

# Pause here, exit on Enter
raw_input("Press Enter to exit\n>")