stm32f4usbvcp.h

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#ifndef SEMF_HARDWAREABSTRACTION_STM32F4_STM32F4USBVCP_H_
#define SEMF_HARDWAREABSTRACTION_STM32F4_STM32F4USBVCP_H_
 
#include <semf/hardwareabstraction/stm32/stm32.h>
#include <semf/communication/uarthardware.h>
 
#if defined(STM32F4) && defined(HAL_PCD_MODULE_ENABLED)
#include <usbd_def.h>
#include <usbd_cdc.h>
 
namespace semf
{
class Stm32F4UsbVcp: public UartHardware
{
public:
    enum class ErrorCode : uint8_t
    {
        Init_Stop = 0,
        Init_Deinit,
        Init_Init,
        Init_RegisterClass,
        Init_RegisterInterface,
        Init_Start
    };
 
    explicit Stm32F4UsbVcp(USBD_HandleTypeDef& usbHandle, uint8_t* usbRxCache, size_t usbRxCacheSize);
    virtual ~Stm32F4UsbVcp() = default;
 
    void init() override;
    // not implemented
    void deinit() override;
    void stopRead() override;
    void stopWrite() override;
    void setFormat(uint8_t bits, WireMode wire, Parity par, StopBits stop, FlowControl flow) override;
    void setBaud(uint32_t baud) override;
 
private:
    struct CallbackList
    {
        Stm32F4UsbVcp* member = nullptr;
        CallbackList* next = nullptr;
    };
 
    static CallbackList* m_callbackList;
    static uint8_t cdcInitCallback(USBD_HandleTypeDef *usb, uint8_t cfgidx);
    static uint8_t cdcDeInitCallback(USBD_HandleTypeDef *usb, uint8_t cfgidx);
    static uint8_t cdcTxCallback(USBD_HandleTypeDef* usb, uint8_t epnum);
    static uint8_t cdcRxCallback(USBD_HandleTypeDef* usb, uint8_t epnum);
    static int8_t cdcControlCallback(uint8_t cmd, uint8_t pbuf[], uint16_t size);
    void cdcInit(USBD_HandleTypeDef* usb);
    void cdcTx(USBD_HandleTypeDef* usb);
    void cdcRx(USBD_HandleTypeDef* usb, uint8_t epnum);
    void cdcControl(uint8_t cmd, uint8_t pbuf[], uint16_t size);
    void writeHardware(const uint8_t data[], size_t size) override;
    void readHardware(uint8_t data[], size_t size) override;
 
    USBD_HandleTypeDef* m_handle;
    USBD_CDC_HandleTypeDef m_cdcHandle;
    USBD_ClassTypeDef  m_interfaceCallbackClass;
    CallbackList m_listMember;
    USBD_CDC_LineCodingTypeDef m_lineCoding =
    {
      115200, /* baud rate*/
      0x00,   /* stop bits-1*/
      0x00,   /* parity - none*/
      0x08    /* nb. of bits 8*/
    };
 
    uint8_t* m_usbRxCache = nullptr;
    size_t m_usbRxCacheSize = 0;
    size_t m_usbRxCacheWritePos = 0;
    size_t m_usbRxCacheReadPos = 0;
    uint8_t* m_rxData = nullptr;
    size_t m_rxDataSize = 0;
    size_t m_rxDataAvailable = 0;
    static constexpr Error::ClassID kSemfClassId = Error::ClassID::Stm32F4UsbVcp;
};
} /* namespace semf */
#endif
#endif /* SEMF_HARDWAREABSTRACTION_STM32F4_STM32F4USBVCP_H_ */