Using digital pins in

First make sure you have the relevant software and librarys installed, the following libraries are relevant for getting all sorts of inputs in from the pi.

in a terminal window

git clone https://github.com/ptone/pyosc.git  

cd pyosc

sudo ./setup.py install

cd

sudo apt-get install python2.7-dev

wget https://github.com/Gadgetoid/py-spidev/archive/master.zip
unzip master.zip

rm master.zip

cd py-spidev-master

sudo python setup.py install

cd
git clone git://git.drogon.net/wiringPi

cd wiringPi

./build

cd

sudo apt-get install python-setuptools python-dev

git clone https://github.com/Gadgetoid/WiringPi2-Python.git

cd WiringPi2-Python/

sudo python setup.py install

cd

git clone git://github.com/guyc/py-gaugette.git

cd py-gaugette

sudo python setup.py install

cd

wire up a button, heres a diagram, note the button is attached to pin 18 and ground

The button is read by a simple python script, this information is then passed to pd-extend via OSC

the pd patch starts the python patch automaticaly using the shell object

(n.b if auto-starting  the pd patch though updating the rc. file (see starting headlessly) the pd patch needs the full address of the python script)

first start up the pd patch, this will open a osc channel, then will open the python script which will start sending the data.

here's some screen shots of how the pd patch works. download the patch here

here's the python script.download it here

#!/usr/bin/python

import time

import os

import OSC

import RPi.GPIO as GPIO

# Open osc

send_address = "127.0.0.1" , 9000

c = OSC.OSCClient()

c.connect(send_address)

GPIO.setmode(GPIO.BCM)

GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_UP)

# Define delay between readings

delay = 0.1

while True:

  input_state1 = GPIO.input(18)

  if input_state1 == False:

      print('Button 1  Pressed')

  

  

  msg = OSC.OSCMessage()

  msg.setAddress("print")  

  msg.append(input_state1) 

  

  c.send(msg)