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/*
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  HardwareSerial.h - Hardware serial library for Wiring
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  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
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  This library is free software; you can redistribute it and/or
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  modify it under the terms of the GNU Lesser General Public
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  License as published by the Free Software Foundation; either
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  version 2.1 of the License, or (at your option) any later version.
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  This library is distributed in the hope that it will be useful,
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  but WITHOUT ANY WARRANTY; without even the implied warranty of
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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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  Lesser General Public License for more details.
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  You should have received a copy of the GNU Lesser General Public
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  License along with this library; if not, write to the Free Software
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  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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  Modified 28 September 2010 by Mark Sproul
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*/
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#ifndef HardwareSerial_h
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#define HardwareSerial_h
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#include <inttypes.h>
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#include "Stream.h"
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struct ring_buffer;
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class HardwareSerial : public Stream
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{
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  private:
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    ring_buffer *_rx_buffer;
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    ring_buffer *_tx_buffer;
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    volatile uint8_t *_ubrrh;
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    volatile uint8_t *_ubrrl;
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    volatile uint8_t *_ucsra;
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    volatile uint8_t *_ucsrb;
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    volatile uint8_t *_udr;
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    uint8_t _rxen;
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    uint8_t _txen;
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    uint8_t _rxcie;
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    uint8_t _udrie;
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    uint8_t _u2x;
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  public:
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    HardwareSerial(ring_buffer *rx_buffer, ring_buffer *tx_buffer,
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      volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
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      volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
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      volatile uint8_t *udr,
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      uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x);
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    void begin(unsigned long);
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    void end();
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    virtual int available(void);
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    virtual int peek(void);
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    virtual int read(void);
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    virtual void flush(void);
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    virtual size_t write(uint8_t);
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    using Print::write; // pull in write(str) and write(buf, size) from Print
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};
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#if defined(UBRRH) || defined(UBRR0H)
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  extern HardwareSerial Serial;
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#elif defined(USBCON)
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  #include "USBAPI.h"
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//  extern HardwareSerial Serial_;  
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#endif
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#if defined(UBRR1H)
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  extern HardwareSerial Serial1;
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#endif
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#if defined(UBRR2H)
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  extern HardwareSerial Serial2;
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#endif
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#if defined(UBRR3H)
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  extern HardwareSerial Serial3;
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#endif
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extern void serialEventRun(void) __attribute__((weak));
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#endif