Keyboard firmwares for Atmel AVR and Cortex-M
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Matrix.txt 340B

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  1. COL
  2. ---
  3. Anode side, senses keys with internal pull-up.
  4. Left to right:
  5. PTD6
  6. PTD5
  7. PTD4
  8. PTD3
  9. PTA19
  10. PTA18
  11. PTA4 NMI
  12. PTA2
  13. PTA1
  14. PTE25
  15. PTE24
  16. PTE30
  17. PTE29
  18. PTE21
  19. ROW
  20. ----
  21. Cathod side, given strobe with output low.
  22. Top to bottom:
  23. PTB3
  24. PTB16
  25. PTB17
  26. PTC0
  27. PTC1