SdSpiDriver.h

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#ifndef SdSpiDriver_h
#define SdSpiDriver_h
#include "../common/SysCall.h"
void sdCsInit(SdCsPin_t pin);
void sdCsWrite(SdCsPin_t pin, bool level);
//------------------------------------------------------------------------------
const uint8_t SHARED_SPI = 0;
#if ENABLE_DEDICATED_SPI
const uint8_t DEDICATED_SPI = 1;
inline bool spiOptionShared(uint8_t opt)
{
    return !(opt & DEDICATED_SPI);
}
#else  // ENABLE_DEDICATED_SPI
inline bool spiOptionShared(uint8_t opt)
{
    (void)opt;
    return true;
}
#endif // ENABLE_DEDICATED_SPI
//------------------------------------------------------------------------------
#define SD_SCK_HZ(maxSpeed) (maxSpeed)
#define SD_SCK_MHZ(maxMhz) (1000000UL * (maxMhz))
// SPI divisor constants - obsolete.
#define SPI_FULL_SPEED SD_SCK_MHZ(50)
#define SPI_DIV3_SPEED SD_SCK_MHZ(16)
#define SPI_HALF_SPEED SD_SCK_MHZ(4)
#define SPI_DIV6_SPEED SD_SCK_MHZ(8)
#define SPI_QUARTER_SPEED SD_SCK_MHZ(2)
#define SPI_EIGHTH_SPEED SD_SCK_MHZ(1)
#define SPI_SIXTEENTH_SPEED SD_SCK_HZ(500000)
//------------------------------------------------------------------------------
#if SPI_DRIVER_SELECT < 2
#include "SPI.h"
typedef SPIClass SpiPort_t;
#elif SPI_DRIVER_SELECT == 2
class SdSpiSoftDriver;
typedef SdSpiSoftDriver SpiPort_t;
#elif SPI_DRIVER_SELECT == 3
class SdSpiBaseClass;
typedef SdSpiBaseClass SpiPort_t;
#else  // SPI_DRIVER_SELECT
typedef void *SpiPort_t;
#endif // SPI_DRIVER_SELECT
//------------------------------------------------------------------------------
class SdSpiConfig
{
  public:
    SdSpiConfig(SdCsPin_t cs, uint8_t opt, uint32_t maxSpeed, SpiPort_t *port)
        : csPin(cs), options(opt), maxSck(maxSpeed), spiPort(port)
    {
    }
 
    SdSpiConfig(SdCsPin_t cs, uint8_t opt, uint32_t maxSpeed) : csPin(cs), options(opt), maxSck(maxSpeed)
    {
    }
    SdSpiConfig(SdCsPin_t cs, uint8_t opt) : csPin(cs), options(opt)
    {
    }
    explicit SdSpiConfig(SdCsPin_t cs) : csPin(cs)
    {
    }
 
    const SdCsPin_t csPin;
    const uint8_t options = 0;
    const uint32_t maxSck = SD_SCK_MHZ(50);
    SpiPort_t *spiPort = nullptr;
};
#if SPI_DRIVER_SELECT < 2
#include "SdSpiArduinoDriver.h"
#elif SPI_DRIVER_SELECT == 2
#include "SdSpiSoftDriver.h"
#elif SPI_DRIVER_SELECT == 3
#include "SdSpiBaseClass.h"
typedef SdSpiBaseClass SdSpiDriver;
#else // SPI_DRIVER_SELECT
#error Invalid SPI_DRIVER_SELECT
#endif // SPI_DRIVER_SELECT
#endif // SdSpiDriver_h