Jonchance / JTAGenum

Given an Arduino compatible microcontroller JTAGenum scans pins[] for basic JTAG functionality and can be used to enumerate the IR for undocumented opcodes. Props to JTAG scanner and Arduinull which came before JTAGenum and forwhich much of the code and logic is based on. Feel free to branch and modify religiously (readme, credits, whatever)