#if !defined(_SPI2Slave_T4_H_)
#define _SPI2Slave_T4_H_

#include <Arduino.h>
#include <circular_buffer.h>
#include <SPI.h>

typedef enum SPI_BITS {
  SPI_8_BITS = 8,
  SPI_16_BITS = 16,
  SPI_32_BITS = 32,
} SPI_BITS;

typedef void (*_SPI_ptr)();

#define SPI2Slave_T4_CLASS template<SPIClass* port = nullptr, SPI_BITS bits = SPI_8_BITS>
#define SPI2Slave_T4_FUNC template<SPIClass* port, SPI_BITS bits>
#define SPI2Slave_T4_OPT SPI2Slave_T4<port, bits>

extern SPIClass SPI;

class SPI2Slave_T4_Base {
  public:
    virtual void SLAVE_ISR();
};

static SPI2Slave_T4_Base* _LPSPI1 = nullptr;

SPI2Slave_T4_CLASS class SPI2Slave_T4 : public SPI2Slave_T4_Base {
  public:
    SPI2Slave_T4();
    void begin();
    uint32_t transmitErrors();
    void onReceive(_SPI_ptr handler) { _spihandler = handler; }
    bool active();
    bool available();
    void pushr(uint32_t data);
    uint32_t popr();

  private:
    _SPI_ptr _spihandler = nullptr;
    void SLAVE_ISR();
    int _portnum = 0;
    uint32_t nvic_irq = 0;
    uint32_t transmit_errors = 0;
};

#include "SPI2Slave_T4.tpp"
#endif