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PyPRUSS

PyPRUSS is a Python binding for controlling the PRUs on BeagleBone.

For examples and inspiration: http://hipstercircuits.com/?cat=5

To install:

git clone https://intelligentagent@bitbucket.org/intelligentagent/pypruss.git  
cd pypruss
python setup.py install
export LD_LIBRARY_PATH=/usr/local/lib

Note: that you must load the uio_pruss kernel module. There is a function for loading and unloading this in the library called modprobe() with an optional argument for the DDR size. To do it manually it's modprobe uio_pruss. This must be done on every boot.

Also, you need to activate the PRU using:

echo BB-BONE-PRU-01 > /sys/devices/bone_capemgr.8/slots #activate the PRU

To try the blinkled example:

cd PyPRUSS/examples/blinkled  
make  
python blinkled.py

You should then see three of the user leds blink 10 times.

There are a few other examples in there as well, have a look at them for other functions.