ChipUartLowLevel.hpp

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#ifndef SOURCE_CHIP_STM32_PERIPHERALS_USARTV1_INCLUDE_DISTORTOS_CHIP_CHIPUARTLOWLEVEL_HPP_
#define SOURCE_CHIP_STM32_PERIPHERALS_USARTV1_INCLUDE_DISTORTOS_CHIP_CHIPUARTLOWLEVEL_HPP_

#include "distortos/devices/communication/UartLowLevel.hpp"

#include "distortos/distortosConfiguration.h"

namespace distortos
{

namespace chip
{

class ChipUartLowLevel : public devices::UartLowLevel
{
public:

    constexpr static uint8_t minCharacterLength {7};

    constexpr static uint8_t maxCharacterLength {9};

    class Parameters;

#ifdef DISTORTOS_CHIP_USART1_ENABLE

    static const Parameters usart1Parameters;

#endif  // def DISTORTOS_CHIP_USART1_ENABLE

#ifdef DISTORTOS_CHIP_USART2_ENABLE

    static const Parameters usart2Parameters;

#endif  // def DISTORTOS_CHIP_USART2_ENABLE

#ifdef DISTORTOS_CHIP_USART3_ENABLE

    static const Parameters usart3Parameters;

#endif  // def DISTORTOS_CHIP_USART3_ENABLE

#ifdef DISTORTOS_CHIP_UART4_ENABLE

    static const Parameters uart4Parameters;

#endif  // def DISTORTOS_CHIP_UART4_ENABLE

#ifdef DISTORTOS_CHIP_UART5_ENABLE

    static const Parameters uart5Parameters;

#endif  // def DISTORTOS_CHIP_UART5_ENABLE

#ifdef DISTORTOS_CHIP_USART6_ENABLE

    static const Parameters usart6Parameters;

#endif  // def DISTORTOS_CHIP_USART6_ENABLE

#ifdef DISTORTOS_CHIP_UART7_ENABLE

    static const Parameters uart7Parameters;

#endif  // def DISTORTOS_CHIP_UART7_ENABLE

#ifdef DISTORTOS_CHIP_UART8_ENABLE

    static const Parameters uart8Parameters;

#endif  // def DISTORTOS_CHIP_UART8_ENABLE

#ifdef DISTORTOS_CHIP_UART9_ENABLE

    static const Parameters uart9Parameters;

#endif  // def DISTORTOS_CHIP_UART9_ENABLE

#ifdef DISTORTOS_CHIP_UART10_ENABLE

    static const Parameters uart10Parameters;

#endif  // def DISTORTOS_CHIP_UART10_ENABLE

    constexpr explicit ChipUartLowLevel(const Parameters& parameters) :
            parameters_{parameters},
            uartBase_{},
            readBuffer_{},
            readSize_{},
            readPosition_{},
            writeBuffer_{},
            writeSize_{},
            writePosition_{}
    {

    }

    ~ChipUartLowLevel() override;

    void interruptHandler();

    std::pair<int, uint32_t> start(devices::UartBase& uartBase, uint32_t baudRate, uint8_t characterLength,
            devices::UartParity parity, bool _2StopBits) override;

    int startRead(void* buffer, size_t size) override;

    int startWrite(const void* buffer, size_t size) override;

    int stop() override;

    size_t stopRead() override;

    size_t stopWrite() override;

private:

    bool isStarted() const
    {
        return uartBase_ != nullptr;
    }

    bool isReadInProgress() const
    {
        return readBuffer_ != nullptr;
    }

    bool isWriteInProgress() const
    {
        return writeBuffer_ != nullptr;
    }

    const Parameters& parameters_;

    devices::UartBase* uartBase_;

    uint8_t* volatile readBuffer_;

    volatile size_t readSize_;

    volatile size_t readPosition_;

    const uint8_t* volatile writeBuffer_;

    volatile size_t writeSize_;

    volatile size_t writePosition_;
};

}   // namespace chip

}   // namespace distortos

#endif  // SOURCE_CHIP_STM32_PERIPHERALS_USARTV1_INCLUDE_DISTORTOS_CHIP_CHIPUARTLOWLEVEL_HPP_