Are there any existing driver libraries (C/C++ preferred) for the Beaglebone Motor Cape? If not, what would be the best examples/tutorials to follow for starting to interact directly with this cape?
I have previously used the Robot Control Library for interacting with the H-bridge motor drivers on the Robotics Cape, but the pinout is different between the two capes. I don't know how easy or hard it would be to adapt the Robot Control Library to the Motor Cape versus writing something specifically for the Motor Cape.
there is a book for beaglebone black and motors by Prabakar. It is called, "BeagleBone by Example."
He goes into motors for bots a bit. Also...
https://github.com/silver2row/motocape is something I set up a while back when I first got the MotorCape from GHI.
It is a start.
It is in Python3 and not C/C++ but I am sure you can port it to C/C++ easily enough.