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Arduino to AVR-C Reference Guide. Note: This reference guide is intended… | by Jordan Réjaud | Medium
GitHub - efthymios-ks/AVR-IO-Macros: Simple Arduino-like port manipulation C macros for AVR microcontrollers.
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Dubworks: AVR- Intro to I/O ports in C Language instead of Arduino/Processing Language
Dubworks: INTRO to port manipulation
2. Switch a LED on
