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keybrd/src/RowScanner_SPIShiftRegisters.h

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#ifndef ROWSCANNER_SPI_SHIFTREGISTERS_H
#define ROWSCANNER_SPI_SHIFTREGISTERS_H
#include <Arduino.h>
#include <inttypes.h>
#include <SPI.h>
#include <RowScannerInterface.h>
#include <RowPort.h>
#include <ColPort.h>
/* RowScanner_SPIShiftRegisters reads all shift registers in a daisy chain.
//todo delete: Assumes only one row of shift registers is connected (no Slave Select).
*/
class RowScanner_SPIShiftRegisters : public RowScannerInterface
{
private:
const uint8_t SS; //Slave Select, pin on master
const uint8_t BYTE_COUNT; //number of shift registers
const uint8_t KEY_COUNT; //number of keys in row
public:
RowScanner_SPIShiftRegisters(const uint8_t SS, uint8_t BYTE_COUNT, uint16_t KEY_COUNT)
: SS(SS), BYTE_COUNT(BYTE_COUNT), KEY_COUNT(KEY_COUNT) {}
virtual uint8_t scan(uint16_t& rowEnd);
void begin();
};
#endif