keybrd library is an open source library for creating custom-keyboard firmware.
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PortMCP23S17.h 250B

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  1. #ifndef PORTMCP23S17_H
  2. #define PORTMCP23S17_H
  3. #include <Arduino.h>
  4. #include <inttypes.h>
  5. #include <SPI.h>
  6. class PortMCP23S17
  7. {
  8. protected:
  9. uint8_t transfer(const uint8_t command, const uint8_t registerAddr, const uint8_t data);
  10. };
  11. #endif