STM32-DMAv2-DmaChannelPeripheral.hpp

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#ifndef SOURCE_CHIP_STM32_PERIPHERALS_DMAV2_INCLUDE_DISTORTOS_CHIP_STM32_DMAV2_DMACHANNELPERIPHERAL_HPP_
#define SOURCE_CHIP_STM32_PERIPHERALS_DMAV2_INCLUDE_DISTORTOS_CHIP_STM32_DMAV2_DMACHANNELPERIPHERAL_HPP_

#include "distortos/chip/CMSIS-proxy.h"

namespace distortos
{

namespace chip
{

class DmaChannelPeripheral
{
public:

    constexpr DmaChannelPeripheral(const uintptr_t dmaBase, const uint8_t channelId) :
            dmaChannelBase_{dmaBase + (DMA1_Stream0_BASE - DMA1_BASE) +
                    channelId * (DMA1_Stream1_BASE - DMA1_Stream0_BASE)},
            channelId_{channelId}
    {

    }

    uint8_t getChannelId() const
    {
        return channelId_;
    }

    uint32_t readCr() const
    {
        return getDmaChannel().CR;
    }

    uint32_t readFcr() const
    {
        return getDmaChannel().FCR;
    }

    uint32_t readM0ar() const
    {
        return getDmaChannel().M0AR;
    }

    uint32_t readM1ar() const
    {
        return getDmaChannel().M1AR;
    }

    uint32_t readNdtr() const
    {
        return getDmaChannel().NDTR;
    }

    uint32_t readPar() const
    {
        return getDmaChannel().PAR;
    }

    void writeCr(const uint32_t cr) const
    {
        getDmaChannel().CR = cr;
    }

    void writeFcr(const uint32_t fcr) const
    {
        getDmaChannel().FCR = fcr;
    }

    void writeM0ar(const uint32_t m0ar) const
    {
        getDmaChannel().M0AR = m0ar;
    }

    void writeM1ar(const uint32_t m1ar) const
    {
        getDmaChannel().M1AR = m1ar;
    }

    void writeNdtr(const uint32_t ndtr) const
    {
        getDmaChannel().NDTR = ndtr;
    }

    void writePar(const uint32_t par) const
    {
        getDmaChannel().PAR = par;
    }

private:

    DMA_Stream_TypeDef& getDmaChannel() const
    {
        return *reinterpret_cast<DMA_Stream_TypeDef*>(dmaChannelBase_);
    }

    uintptr_t dmaChannelBase_;

    uint8_t channelId_;
};

}   // namespace chip

}   // namespace distortos

#endif  // SOURCE_CHIP_STM32_PERIPHERALS_DMAV2_INCLUDE_DISTORTOS_CHIP_STM32_DMAV2_DMACHANNELPERIPHERAL_HPP_