STM32-SPIv1-SpiPeripheral.hpp

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#ifndef SOURCE_CHIP_STM32_PERIPHERALS_SPIV1_INCLUDE_DISTORTOS_CHIP_STM32_SPIV1_SPIPERIPHERAL_HPP_
#define SOURCE_CHIP_STM32_PERIPHERALS_SPIV1_INCLUDE_DISTORTOS_CHIP_STM32_SPIV1_SPIPERIPHERAL_HPP_

#include "distortos/chip/getBusFrequency.hpp"

namespace distortos
{

namespace chip
{

class SpiPeripheral
{
public:

    constexpr explicit SpiPeripheral(const uintptr_t spiBase) :
            spiBase_{spiBase},
            peripheralFrequency_{getBusFrequency(spiBase)}
    {

    }

    uintptr_t getDrAddress() const
    {
        return reinterpret_cast<uintptr_t>(&getSpi().DR);
    }

    uint32_t getPeripheralFrequency() const
    {
        return peripheralFrequency_;
    }

    uint32_t readCr1() const
    {
        return getSpi().CR1;
    }

    uint32_t readCr2() const
    {
        return getSpi().CR2;
    }

    uint32_t readDr() const
    {
        return getSpi().DR;
    }

    uint32_t readSr() const
    {
        return getSpi().SR;
    }

    void writeCr1(const uint32_t cr1) const
    {
        getSpi().CR1 = cr1;
    }

    void writeCr2(const uint32_t cr2) const
    {
        getSpi().CR2 = cr2;
    }

    void writeDr(const uint32_t dr) const
    {
        getSpi().DR = dr;
    }

    void writeSr(const uint32_t sr) const
    {
        getSpi().SR = sr;
    }

private:

    SPI_TypeDef& getSpi() const
    {
        return *reinterpret_cast<SPI_TypeDef*>(spiBase_);
    }

    uintptr_t spiBase_;

    uint32_t peripheralFrequency_;
};

}   // namespace chip

}   // namespace distortos

#endif  // SOURCE_CHIP_STM32_PERIPHERALS_SPIV1_INCLUDE_DISTORTOS_CHIP_STM32_SPIV1_SPIPERIPHERAL_HPP_