SRPI.h

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#ifndef SRPI_H
#define SRPI_H

#include "GPIO.h"

template<uint8_t BITORDER, BOARD::pin_t DATA_PIN, BOARD::pin_t CLOCK_PIN>
class SRPI {
public:
  SRPI()
  {
    m_data.input();
    m_clock.output();
  }

  uint8_t read()
  {
    uint8_t res = 0;
    if (BITORDER == LSBFIRST) {
      uint8_t mask = 1;
      do {
        m_clock.toggle();
        res |= (m_data ? mask : 0);
        m_clock.toggle();
        mask <<= 1;
      } while (mask);
    }
    else {
      uint8_t mask = 0x80;
      do {
        m_clock.toggle();
        res |= (m_data ? mask : 0);
        m_clock.toggle();
        mask >>= 1;
      } while (mask);
    }
    return (res);
  }

  void operator>>(uint8_t& value)
  {
    value = read();
  }

protected:
  GPIO<DATA_PIN> m_data;
  GPIO<CLOCK_PIN> m_clock;
};

#endif