CDC.hh

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#ifndef COSA_CDC_HH
#define COSA_CDC_HH

#include "Cosa/Types.h"
#include "Cosa/Power.hh"
#include "Cosa/IOStream.hh"

#if defined(USBCON)

class CDC : public IOStream::Device {
public:
  static const uint8_t BUFFER_MAX = 64;

  enum {
    DATA5 = 0,
    DATA6 = _BV(UCSZ00),
    DATA7 = _BV(UCSZ01),
    DATA8 = _BV(UCSZ01) | _BV(UCSZ00),
    DATA9 = _BV(UCSZ02) | _BV(UCSZ01) | _BV(UCSZ00),
    NO_PARITY = 0,
    EVEN_PARITY = _BV(UPM01),
    ODD_PARITY = _BV(UPM01) | _BV(UPM00),
    STOP1 = 0,
    STOP2 = _BV(USBS0)
  } __attribute__((packed));

  CDC(IOStream::Device* ibuf) :
    IOStream::Device(),
    m_ibuf(ibuf)
  {}

  virtual int available()
  {
    return (m_ibuf->available());
  }

  using IOStream::Device::write;

  virtual int write(const void* buf, size_t size);

  virtual int peekchar()
  {
    return (m_ibuf->peekchar());
  }

  virtual int peekchar(char c)
  {
    return (m_ibuf->peekchar(c));
  }

  virtual int getchar()
  {
    return (m_ibuf->getchar());
  }

  virtual int flush();

  virtual void empty();

  bool begin(uint32_t baudrate = 9600, uint8_t format = DATA8 + STOP2 + NO_PARITY);

  bool end()
  {
    Power::usb_disable();
    return (true);
  }

protected:
  IOStream::Device* m_ibuf;

  void accept();

  friend void USB_GEN_vect(void);
};

extern CDC cdc;
#endif
#endif