spi.h

#ifndef SPI_H
#define SPI_H
 
#include <memory>
 
#include "controllers.h"
#include "decoders.h"
 
namespace spi {
 
struct spi;
 
struct Channel {
    unsigned channel;
    Channel(unsigned channel)
        : channel(channel)
    {
        if (channel > 8)
            throw std::logic_error("bad spi slave index");
    }
};
 
class Core : public RegisterDecoder {
    std::unique_ptr<struct spi> regs_storage;
    struct spi &regs;
 
    void decode() override;
 
public:
    Core(struct pcie_bars &);
    ~Core() override;
};
 
class Controller : public RegisterDecoderController {
    std::unique_ptr<struct spi> regs_storage;
    struct spi &regs;
 
    Core dec;
 
    void set_devinfo_callback() override;
    static int32_t get_divider(int32_t, int32_t);
 
public:
    Controller(struct pcie_bars &);
    ~Controller();
 
    void set_defaults();
 
    bool write_read_data(const unsigned char *, size_t, unsigned char *, size_t,
        Channel = { 0 });
};
 
} /* namespace spi */
 
#endif