source: S-port/trunk/Core/Inc/RingBuffer.h

/*
 * RingBuffer.h
 *
 * Created: 11.05.2021 11:14:37
 *  Author: Admin
 */ 
#ifndef RINGBUFFER_H_
#define RINGBUFFER_H_

#include <stdint.h>

typedef struct {
        const uint16_t BUF_SZ;
        uint16_t tail;      // "óêàçàòåëü" õâîñòà áóôåðà
        uint16_t head;      // "óêàçàòåëü" ãîëîâû áóôåðà
        volatile uint16_t count;     // ñ÷åò÷èê ñèìâîëîâ
        uint16_t *data;
} RingBuf16bit_ptr_typeDef;

typedef struct {
        const uint16_t BUF_SZ;
        uint16_t tail;      // "óêàçàòåëü" õâîñòà áóôåðà
        uint16_t head;      // "óêàçàòåëü" ãîëîâû áóôåðà
        volatile uint16_t count;     // ñ÷åò÷èê ñèìâîëîâ
        uint8_t *data;
} RingBuf8bit_ptr_typeDef;

#define dRBuf_Count(us)                         ((us)->count)
#define dRBuf_Full(us)                          (((((us)->head+1)&((us)->BUF_SZ-1)) == (us)->tail) && ((us)->count != 0))
#define dRBuf_Empty(us)                         (((us)->count) == (0))
#define dRBuf_Put(us, buf, sym)         {buf[((us)->head)]=sym;  (us)->head = (((us)->head + 1) & ((us)->BUF_SZ - 1)); (us)->count++;}
#define dRBuf_PutF(us, buf, sym)    {if (!(dRBuf_Full(us))) dRBuf_Put(us, buf, sym);}
        
#define dRBuf_Get(us, buf, sym)         {sym = buf[((us)->tail)];  (us)->tail = (((us)->tail + 1) & ( (us)->BUF_SZ - 1)); (us)->count--;}
#define dRBuf_GetE(us, buf, sym)    {if (!(dRBuf_Empty(us))) dRBuf_Get(us, buf, sym);}

#endif /* RINGBUFFER_H_ */