RingBuffer.h

00001 //
00002 //  RingBuffer.h ... General purpose ring buffer library
00003 //
00004 //  Copyright 2012  Yoji KURODA
00005 //
00006 //  2009.11.13 ... Originally written in C by Y.Kuroda for Renesas H83664
00007 //  2012.08.31 ... Code convert for mbed in C++
00008 //  2012.09.26 ... Pointer use
00009 //  2012.09.27 ... RTOS proof
00010 
00011 #ifndef _RINGBUFFER_H
00012 #define _RINGBUFFER_H
00013 
00014 
00015 #include "rtos.h"
00016 
00017 
00018 class RingBuffer {
00019 
00020   protected:
00021     unsigned char* buf;
00022     unsigned char* sp;
00023     unsigned char* ep;
00024     Mutex mutex;
00025 
00026     int bufsize;
00027 
00028   public:
00029     RingBuffer(int _bufsize=100);
00030     ~RingBuffer();
00031     
00032     int save(unsigned char c);
00033     unsigned char read(void);
00034     int check(void);
00035     int buffersize(void){return bufsize;};
00036     int full(void){ return (check()>=bufsize-1 ? 1 : 0); };
00037 };
00038 
00039 
00040 #endif /* _RINGBUFFER_H */
00041 
00042