CDC.h

#ifndef __CDC_H__
#define __CDC_H__

#include "Arduino.h"
#include "api/Stream.h"
#include "api/USBAPI.h"

#if defined (USBCON)

//================================================================================
//================================================================================
//	Serial over CDC (Serial1 is the physical port)

#define RINGBUFFER_FORCE_SMALL_SIZE
#include "api/RingBuffer.h"

#ifndef SERIAL_BUFFER_SIZE
#if ((RAMEND - RAMSTART) < 1023)
#define SERIAL_BUFFER_SIZE 16
#else
#define SERIAL_BUFFER_SIZE 64
#endif
#endif
#if (SERIAL_BUFFER_SIZE > 256)
#error Please lower the CDC Buffer size
#endif

class Serial_ : public Stream
{
private:
	int peek_buffer;
public:
	Serial_() { peek_buffer = -1; };
	void begin(unsigned long);
	void begin(unsigned long, uint8_t);
	void end(void);

	virtual int available(void);
	virtual int peek(void);
	virtual int read(void);
	virtual int availableForWrite(void);
	virtual void flush(void);
	virtual size_t write(uint8_t);
	virtual size_t write(const uint8_t*, size_t);
	using Print::write; // pull in write(str) and write(buf, size) from Print
	operator bool();

	//RingBuffer _rx_buffer(SERIAL_BUFFER_SIZE);

	// This method allows processing "SEND_BREAK" requests sent by
	// the USB host. Those requests indicate that the host wants to
	// send a BREAK signal and are accompanied by a single uint16_t
	// value, specifying the duration of the break. The value 0
	// means to end any current break, while the value 0xffff means
	// to start an indefinite break.
	// readBreak() will return the value of the most recent break
	// request, but will return it at most once, returning -1 when
	// readBreak() is called again (until another break request is
	// received, which is again returned once).
	// This also mean that if two break requests are received
	// without readBreak() being called in between, the value of the
	// first request is lost.
	// Note that the value returned is a long, so it can return
	// 0-0xffff as well as -1.
	int32_t readBreak();

	// These return the settings specified by the USB host for the
	// serial port. These aren't really used, but are offered here
	// in case a sketch wants to act on these settings.
	uint32_t baud();
	uint8_t stopbits();
	uint8_t paritytype();
	uint8_t numbits();
	bool dtr();
	bool rts();
	enum {
		ONE_STOP_BIT = 0,
		ONE_AND_HALF_STOP_BIT = 1,
		TWO_STOP_BITS = 2,
	};
	enum {
		NO_PARITY = 0,
		ODD_PARITY = 1,
		EVEN_PARITY = 2,
		MARK_PARITY = 3,
		SPACE_PARITY = 4,
	};

};
extern Serial_ Serial;

#define HAVE_CDCSERIAL

//================================================================================
//================================================================================
//	CSC 'Driver'

int		CDC_GetInterface(uint8_t* interfaceNum);
int		CDC_GetDescriptor(int i);
bool	CDC_Setup(USBSetup& setup);

#endif

#endif