Update buttons example script for PaPiRus Zero (automatic HAT detection)

PiSupply / PaPiRus

Resources for PaPiRus ePaper eInk displays

https://www.pi-supply.com/product/papirus-epaper-eink-screen-hat-for-raspberry-pi/

Other

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Update buttons example script for PaPiRus Zero (automatic HAT detection) #77

Closed tvoverbeek closed 7 years ago

tvoverbeek commented 7 years ago

This PR improves on PR #54 by detecting the HAT automatically (no command argument needed). Also does not prompt to 'run as root' on Raspbian versions with /dev/gpiomem access for user pi. Corrected Papirus Zero GPIO assignments from PR #54 so they match the labels on the board. Added exit script when pressing SW1 and SW2 simulataneously