keybrd library is an open source library for creating custom-keyboard firmware.
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- /* keybrd_MCP23017.ino
-
- MCP23017 pin assignments
- DESTINATION PIN PIN_NUMBER PIN DESTINATION
- row0 GPB0 1 28 GPA7
- row1 GPB1 2 27 GPA6
- GPB2 3 26 GPA5
- GPB3 4 25 GPA4
- GPB4 5 24 GPA3
- GPB5 6 23 GPA2
- GPB6 7 22 GPA1 col1
- GPB7 8 21 GPA0 col0
- LC 3.3V VDD 9 20 INTA
- GND VSS 10 19 INTB
- NC 11 18 /RESET VDD
- LC 19 SCL 12 17 A2 GND
- LC 18 SDA 13 16 A1 GND
- NC 14 15 A0 GND
-
- */
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