serial.hh

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/*
 * Copyright (c) 2014, 2017 ARM Limited
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#ifndef __DEV_SERIAL_HH__
#define __DEV_SERIAL_HH__

#include "base/callback.hh"
#include "sim/sim_object.hh"

struct SerialDeviceParams;
struct SerialNullDeviceParams;

class SerialDevice : public SimObject
{
  public:
    SerialDevice(const SerialDeviceParams *p);
    ~SerialDevice();

  public: // Serial device API (UART->Device)
    void regInterfaceCallback(Callback *c);

    virtual bool dataAvailable() const = 0;

    virtual void writeData(uint8_t c) = 0;

    virtual uint8_t readData() = 0;

  protected:
    void notifyInterface();

  private:
    Callback *interfaceCallback;
};

class SerialNullDevice : public SerialDevice
{
  public:
    SerialNullDevice(const SerialNullDeviceParams *p);

  public:
    bool dataAvailable() const override { return false; }
    void writeData(uint8_t c) override {};
    uint8_t readData() override;
};

#endif // __DEV_SERIAL_HH__