[136] | 1 | /*
|
---|
| 2 | Copyright (c) 2011 Arduino. All right reserved.
|
---|
| 3 |
|
---|
| 4 | This library is free software; you can redistribute it and/or
|
---|
| 5 | modify it under the terms of the GNU Lesser General Public
|
---|
| 6 | License as published by the Free Software Foundation; either
|
---|
| 7 | version 2.1 of the License, or (at your option) any later version.
|
---|
| 8 |
|
---|
| 9 | This library is distributed in the hope that it will be useful,
|
---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
---|
| 12 | See the GNU Lesser General Public License for more details.
|
---|
| 13 |
|
---|
| 14 | You should have received a copy of the GNU Lesser General Public
|
---|
| 15 | License along with this library; if not, write to the Free Software
|
---|
| 16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
---|
| 17 | */
|
---|
| 18 |
|
---|
| 19 | #ifndef _RING_BUFFER_
|
---|
| 20 | #define _RING_BUFFER_
|
---|
| 21 |
|
---|
| 22 | #include <stdint.h>
|
---|
| 23 |
|
---|
| 24 | // Define constants and variables for buffering incoming serial data. We're
|
---|
| 25 | // using a ring buffer (I think), in which head is the index of the location
|
---|
| 26 | // to which to write the next incoming character and tail is the index of the
|
---|
| 27 | // location from which to read.
|
---|
[191] | 28 | #define SERIAL_BUFFER_SIZE 1024
|
---|
[136] | 29 |
|
---|
| 30 | class RingBuffer
|
---|
| 31 | {
|
---|
| 32 | public:
|
---|
| 33 | uint8_t _aucBuffer[SERIAL_BUFFER_SIZE] ;
|
---|
| 34 | int _iHead ;
|
---|
| 35 | int _iTail ;
|
---|
| 36 |
|
---|
| 37 | public:
|
---|
| 38 | RingBuffer( void ) ;
|
---|
| 39 | void store_char( uint8_t c ) ;
|
---|
| 40 | void clear();
|
---|
| 41 | int read_char();
|
---|
| 42 | int available();
|
---|
| 43 | int peek();
|
---|
| 44 | bool isFull();
|
---|
| 45 |
|
---|
| 46 | private:
|
---|
| 47 | int nextIndex(int index);
|
---|
| 48 | } ;
|
---|
| 49 |
|
---|
| 50 | #endif /* _RING_BUFFER_ */
|
---|