Raspberry Pi

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Revision as of 15:56, 14 February 2014 by Rikesh Patel (talk | contribs) (Piface)

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This is a page on configuring and using the Raspberry Pi and Rasbian. This could be adapted to other ARM based linux OSs. Details could be out of order and the page will need sorting at a later point.

Default password

The default user and password for Rasbian is;

User: pi

Password: raspberry

Change as needed using passwd in terminal

Starting GUI

Enter startx in terminal

Accessing root

Open terminal and enter;

sudo passwd root

enter the `comppassword` x2.

Configuring Rasbian

Change some settings of the OS by entering in terminal;


including the start-up routine.

Setting your IP address

- Edit /etc/network/interfaces

- Add midway;

iface eth0 inet static

address 128.243.74.xxx replace 'xxx' with your own IP




auto eth0


- Add, as root, to the end of the file '/etc/environment' the line;

export http_proxy=http ://

- Create file '/etc/apt/apt.conf' and '/etc/apt/apt.conf.d/10proxy', and add to both;

Acquire::http::Proxy "http ://";


- Install synaptic;

sudo apt-get synaptic

- Use synaptic to install stuff. I've installed KDE.

Other stuff

- For KDM, change in /etc/kde4/kdm -> allowrootlogin = true


You need to install libusb-dev before attempting to compile phidgets.


Few things here, may be unnecessary in newer versions of Rasbian

- Update if haven't already sudo apt-get update

- Edit /etc/modprobe.d/raspi-blacklist.conf and comment out (using #) blacklist spi-bcm2708 (alternatively use sudo modprobe spi-bcm2708 for single use)

- For C interface, download in terminal to somewhere local; git clone https://github.com/piface/libmcp23s17.git

git clone https://github.com/piface/libpifacedigital.git

I couldn't get it to download, so I did it manually.

- Build the library;

cd libmcp23s17/


cd ..

cd libpifacedigital/


This creates the library libpifacedigital.a.

- When making your code, use this; gcc -o example example.c -Isrc/ -L. -lpifacedigital -L../libmcp23s17/ -lmcp23s17

(plus other flags like -lphidgets21)