max22200_spi_interface.hpp

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#pragma once
#include <cstddef>
#include <cstdint>
 
namespace max22200 {
 
// ============================================================================
// GPIO Enums -- Standardised Control Pin Model
// ============================================================================
 
enum class CtrlPin : uint8_t {
  ENABLE = 0, 
  FAULT,      
  CMD         
};
 
enum class GpioSignal : uint8_t {
  INACTIVE = 0, 
  ACTIVE   = 1  
};
 
template <typename Derived> class SpiInterface {
public:
  bool Initialize() { return static_cast<Derived *>(this)->Initialize(); }
 
  bool Transfer(const uint8_t *tx_data, uint8_t *rx_data, size_t length) {
    return static_cast<Derived *>(this)->Transfer(tx_data, rx_data, length);
  }
 
  void SetChipSelect(bool state) {
    return static_cast<Derived *>(this)->SetChipSelect(state);
  }
 
  bool Configure(uint32_t speed_hz, uint8_t mode, bool msb_first = true) {
    return static_cast<Derived *>(this)->Configure(speed_hz, mode, msb_first);
  }
 
  bool IsReady() const { return static_cast<const Derived *>(this)->IsReady(); }
 
  void DelayUs(uint32_t us) { static_cast<Derived *>(this)->DelayUs(us); }
 
  // --------------------------------------------------------------------------
 
  void GpioSet(CtrlPin pin, GpioSignal signal) {
    static_cast<Derived *>(this)->GpioSet(pin, signal);
  }
 
  bool GpioRead(CtrlPin pin, GpioSignal &signal) {
    return static_cast<Derived *>(this)->GpioRead(pin, signal);
  }
 
  void GpioSetActive(CtrlPin pin) { GpioSet(pin, GpioSignal::ACTIVE); }
 
  void GpioSetInactive(CtrlPin pin) { GpioSet(pin, GpioSignal::INACTIVE); }
 
 
protected:
  SpiInterface() = default;
 
  // Prevent copying
  SpiInterface(const SpiInterface &) = delete;
  SpiInterface &operator=(const SpiInterface &) = delete;
 
  // Allow moving
  SpiInterface(SpiInterface &&) = default;
  SpiInterface &operator=(SpiInterface &&) = default;
 
  ~SpiInterface() = default;
};
 
} // namespace max22200