Tools to access the bitwizard I2C and SPI expansion boards on raspberry pi.

If you don't have git installed already, on debian or derived operating systems (raspian):

sudo apt-get install git-core

Then get the bw_rpi_tools:

git clone https://github.com/rewolff/bw_rpi_tools.git

now, change into the directory:

cd bw_rpi_tools cd bw_tool

and build:

make

If that looks succesful, you can install with "make install".

The "gpio" tools that are included were written before others wrote similar tools. Those seem more popular right now. Unless you need a specific feature from my gpio tools, just use what everybody else uses.

The "wiringpi" library is the "similar tools" that I'm talking about. It uses the kernel interfaces to GPIO of the platform, and therefore does not have to do SOC-specific low-level-stuff that my GPIO tools here have to do. VZ just notified me that the base address of GPIOs changed on the "upgrade" from the raspberry pi model B+ to the raspberry pi 2 model B. That change has also been made to the kernel on the new platform, so the wiring pi library continues to work without modification while my gpio tools (unmaintained "two years" before the pi2 came out) would need a patch.