BMS/Bsp/ringbuffer.c

/**********************************************************************************************
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>      : <EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>      :
<EFBFBD>汾      :V1.0
<EFBFBD>޸<EFBFBD>      :
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  :
Notice    :
***********************************************************************************************/
#include "ringbuffer.h"
#include <stdio.h>

void RingBuf_Init(RingBuffer_T *pbuf)
{
    pbuf->headPos = 0;
    pbuf->tailPos = 0;
}

/** 
* @brief дһ<EFBFBD><EFBFBD><EFBFBD>ֽڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
* @param data<EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
* @return none 
*/ 
void RingBuf_Write(RingBuffer_T *pbuf, unsigned char data) 
{ 
    //printf("%02X", data);
    // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><EFBFBD>ŵ<EFBFBD>tailPos<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD>ؿռ<EFBFBD>
    pbuf->ringBuf[pbuf->tailPos] = data; //<EFBFBD><EFBFBD>β<EFBFBD><EFBFBD>׷<EFBFBD><EFBFBD> 
    
    // tailPosition<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󻺳壬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>tailPos<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    if(++(pbuf->tailPos) >= BUFFER_MAX) {//β<EFBFBD>ڵ<EFBFBD>ƫ<EFBFBD><EFBFBD> 
        pbuf->tailPos=0; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󳤶<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>γɻ<EFBFBD><EFBFBD>ζ<EFBFBD><EFBFBD><EFBFBD> 
    }
    // <EFBFBD><EFBFBD><EFBFBD><EFBFBD>tailPos<EFBFBD><EFBFBD>headPos<EFBFBD><EFBFBD><EFBFBD>ȣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ٶȣ<EFBFBD><EFBFBD>ӵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>¡<EFBFBD>׷β<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    if(pbuf->tailPos == pbuf->headPos) {//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>׷<EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD>ͷ<EFBFBD>ڵ<EFBFBD>ƫ<EFBFBD><EFBFBD>λ<EFBFBD>ö<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
        // <EFBFBD><EFBFBD>ʱheadPos<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󡱣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ취<EFBFBD>ǽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еĿռ<EFBFBD><EFBFBD>ٿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>㡣
        if(++(pbuf->headPos) >= BUFFER_MAX) {
        // <EFBFBD><EFBFBD><EFBFBD><EFBFBD>headPosҲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>飬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>headPos<EFBFBD><EFBFBD><EFBFBD>㡣
            pbuf->headPos=0;
        }
    }
}
/**
* @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֽڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param *pData:ָ<EFBFBD>룬<EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @return 1<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿյģ<EFBFBD>0<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ݳɹ<EFBFBD>
*/
uint8_t RingBuf_Read(RingBuffer_T *pbuf, unsigned char* pData)
{
    // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>headPos<EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>tailPos<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿյġ<EFBFBD>
    if(pbuf->headPos == pbuf->tailPos) {//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷβ<EFBFBD>Ӵ<EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>
        return 1; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿյ<EFBFBD>
    }
    // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>գ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD>
    else {
        // <EFBFBD><EFBFBD>ȡheadPos<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>Ԫ<EFBFBD>ؿռ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD>
        *pData = pbuf->ringBuf[pbuf->headPos];  //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD><EFBFBD>ȡͷ<EFBFBD>ڵ<EFBFBD>ֵ<EFBFBD><EFBFBD>ƫ<EFBFBD><EFBFBD>ͷ<EFBFBD>ڵ<EFBFBD>
        // headPosition<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD>Զ<EFBFBD>ȡ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>headPos<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵBUFFER_MAX<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>headPosition<EFBFBD><EFBFBD><EFBFBD>㡣
        if(++(pbuf->headPos) >= BUFFER_MAX) {
            pbuf->headPos = 0;
        }
        //printf("<%d %d>", pbuf->headPos, pbuf->tailPos);
        return 0;    //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>0<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ݳɹ<EFBFBD>
    }
}