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massduino_boards

This is an unofficial Arduino board support package for MassDuino boards produced by INHAOS, based on official package V46r2 available here.

Besides packaging, this BSP includes a few trivial changes to add C++11 support, which is needed to compile the latest Arduino libraries.

Useful information

MassDuino topic on arduino.cc

Key differences between MD-328D and ATmega328P:

  • Most MD-328D input pins have weak internal pullups (sourcing roughly 30-40 uA). Configuring a pin as INPUT_PULLUP increases the sourced current to 0.4-0.5 mA.

  • Sketches which require precise clock on MD-328D (notably, those using UART) must call sysClock(EXT_OSC) before using features relying on exact timing. This also means XTAL pins (D22 and D27) cannot be used as general-purpose pins.