50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
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Copyright (c) 2014 Arduino. 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.
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See the GNU 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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*/
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#ifndef _RING_BUFFER_
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#define _RING_BUFFER_
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#include <stdint.h>
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// Define constants and variables for buffering incoming serial data. We're
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// using a ring buffer (I think), in which head is the index of the location
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// to which to write the next incoming character and tail is the index of the
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// location from which to read.
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#define SERIAL_BUFFER_SIZE 164
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class RingBuffer
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{
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public:
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uint8_t _aucBuffer[SERIAL_BUFFER_SIZE] ;
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int _iHead ;
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int _iTail ;
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public:
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RingBuffer( void ) ;
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void store_char( uint8_t c ) ;
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void clear();
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int read_char();
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int available();
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int peek();
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bool isFull();
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private:
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int nextIndex(int index);
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} ;
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#endif /* _RING_BUFFER_ */
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