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Issues with the latest version of Raspbian jessie
The newer version of Raspbian have switched to using dttree when enabling SPI. When you do this upgrade this library stops working. Running the Read.py example just sits there.
Activity here: https://github.com/raspberrypi/linux/issues/1547
but no solution yet.
If you take a look at Issue #1547, there is a workaround now!
When cloning the SPI-Py library, changing '.cs_change = 1' to '.cs_change = 0' (line 189 in spi.c) before running sudo python setup.py install fixes the issues I had. Alternatively you can also clone my fork of this library https://github.com/mab5vot9us9a/SPI-Py, so you don't have to make the changes yourself.
Also make sure you have the latest kernel (>= 4.4.14), because it fixes a bug in earlier versions (see Issue #1547).
You can check your version using:
uname -a | sed -E "s/.*([0-9]+\.[0-9]+\.[0-9]+)-v.*/\1/"
If you need to update your kernel, use sudo rpi-update. If it's not yet installed, do so using sudo apt-get install rpi-update.
