RPi.GPIO-Odroid

RPi.GPIO port with support for RPi, Odroid C1, Odroid C2, and Odroid XU4

Based on:

RPi.GPIO by Ben Croston
https://sourceforge.net/projects/raspberry-gpio-python/

Hardkernel WiringPi port
https://github.com/hardkernel/wiringPi

swkim01's Odroid C1 RPi.GPIO port
https://github.com/swkim01/RPi.GPIO-OdroidC1

License

RPi.GPIO is distributed under MIT license, but wiringPi uses LGPL 3. Since this project
contains code from both projects, it is licensed under the slightly more restrictive LGPL v3.

Status

Working for simple IO on C1, XU4, RPi
Likely working on C2, but no device to test
PWM, events, analog read, ... not implemented

Building

1. Install build-essential, python, python-dev, git
2. git clone https://github.com/jfath/RPi.GPIO-Odroid.git
3. cd RPi.GPIO-Odroid
4. sudo python setup.py clean --all
5. sudo python setup.py build install

Usage

Simple test app:

#Read state of GPIO output on GPIO input  
#Use jumper wire from pin 13 to pin 31  
#XU4 without shifter-shield pin 13 to pin 19  
import RPi.GPIO as GPIO  
import time  
  
LedPinW = 27    # pin13, bcm27  
LedPinR = 6    # pin31, bcm6  
  
def setup():  
  GPIO.setmode(GPIO.BCM)       # Number GPIOs by BCM chip numbering scheme  
  GPIO.setup(LedPinR, GPIO.IN, pull_up_down=GPIO.PUD_UP)   # Set LedPinR mode input  
  GPIO.setup(LedPinW, GPIO.OUT)   # Set LedPinW mode to output  
  GPIO.output(LedPinW, GPIO.HIGH) # Set LedPinW pin high  
  
def blink():  
  while True:  
    GPIO.output(LedPinW, GPIO.HIGH)  # LedPinW high  
    time.sleep(2)  
    pstate=GPIO.input(LedPinR)  # Read LedPinR  
    print("*****Pin state (LedPinW HIGH) ", pstate, "*****\n")  
    time.sleep(2)  
    GPIO.output(LedPinW, GPIO.LOW) # LedPinW low  
    time.sleep(2)  
    pstate=GPIO.input(LedPinR)  # Read LedPinR  
    print("*****Pin state (LedPinW LOW) ", pstate, "*****\n")  
    time.sleep(2)  
  
def shutdown():  
  GPIO.output(LedPinW, GPIO.LOW)   # LedPinW low  
  GPIO.setup(LedPinW, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)   # LedPinW input  
  GPIO.cleanup()  
  
if __name__ == '__main__':     # Program start  
  print('To read output correctly, jumper pin 13 (bcm27) to pin 31 (bcm6)')
  print('Press Ctrl-C to exit') 
  setup()  
  print("Hardware information: ", GPIO.RPI_INFO)
  try:  
    blink()  
  except KeyboardInterrupt:  # When 'Ctrl+C' is pressed, shut down cleanly  
    shutdown()
 

Notes

Apps require root (eg 'sudo python testapp.py')
When using BCM mode, RPi BCM numbers are passed to GPIO.xxx and translated internally to Odroid GPIO numbers
Compare RPi connector pinout / BCM chart and Odroid pinout to match RPi BCM with Odroid pins
Odroid XU4 pin numbers use shifter-shield numbers