Rotary encoder issue

[AndersWestman]

• Firmware version: 1.1.1 with the “SD-card fix”
• Shield version Crowd campaign unit
• Powerboard version

Expected behavior

Rotary encoder is expected to change the value by one increment at time.

Actual behavior

Rotary encoder sometimes changes the value by factor 100, e.g. 10V instead of 0.1V or 1V instead of 10mV.

How to reproduce

[prasimix]

How to reproduce: wait somewhere between half and hour and an hour after powering PSU on. First step will be ignored and the next one will be 100x times higher then expected (e.g. 1 V instead od 10 mV). All other steps after that will be correct (i.e. 10 mV increments).

[AndersWestman]

Master branch from August 27, 2018 looks fine.