Getting started with rpi serial and BitWizard expansion boards

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• get raspian
• comment out the two lines in /etc/modprobe.d/raspi-blacklist.conf (no longer necessary?)
• get bw_rpi_tools

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

• compile bw_tool

cd bw_rpi_tools/bw_tool/
make

• install bw_tool

sudo make install 

• get rpi-update (no longer necessary?)
• run rpi-update (no longer necessary?)
• reboot (no longer necessary?)
• for the spi version, run

sudo bw_tool -t "hello world" 

• for the i2c version on a rev 1 rasbperry pi, run

sudo modprobe i2c-dev
sudo bw_tool -I -t "hello world"

• for the i2c version on a rev 2 raspberry pi, you need to specify the other I2C bus:

sudo bw_tool -I -D /dev/i2c-1 -t "hello world"

(the sample assumes the LCD and displays a text on it.) Try "-a <youraddress> -i" instead of the '-t "hello world" ' to identify your expansion board. Fill in the address from default addresses.

For example " -a 94 -R 30:b" will read the status of the pushbuttons on the rpi_ui. "-a 94 -t hello" will print a text on the rpi_ui.