70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
#include "fifo.h"
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//RingBuff_t debugRingBuff; //创建一个ringBuff的缓冲区
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//RingBuff_t co2RingBuff; //创建一个ringBuff的缓冲区
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/**
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* @brief RingBuff_Init
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* @param void
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* @return void
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* @note 初始化环形缓冲区
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*/
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void RingBuff_Init(RingBuff_t *ringBuff)
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{
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//初始化相关信息
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ringBuff->Head = 0;
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ringBuff->Tail = 0;
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ringBuff->Lenght = 0;
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}
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/**
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* @brief Write_RingBuff
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* @param u8 data
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* @return FLASE:环形缓冲区已满，写入失败;TRUE:写入成功
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* @note 往环形缓冲区写入u8类型的数据
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*/
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uint8_t Write_RingBuff(RingBuff_t *ringBuff,uint8_t data)
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{
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if(ringBuff->Lenght >= RINGBUFF_LEN) //判断缓冲区是否已满
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{
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return FLASE;
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}
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ringBuff->Ring_Buff[ringBuff->Tail]=data;
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// ringBuff.Tail++;
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ringBuff->Tail = (ringBuff->Tail+1)%RINGBUFF_LEN;//防止越界非法访问
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ringBuff->Lenght++;
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return OK;
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}
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/**
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* @brief Read_RingBuff
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* @param u8 *rData，用于保存读取的数据
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* @return FLASE:环形缓冲区没有数据，读取失败;TRUE:读取成
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* @note 从环形缓冲区读取一个u8类型的数据
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*/
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uint8_t Read_RingBuff(RingBuff_t *ringBuff,uint8_t *rData)
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{
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if(ringBuff->Lenght == 0)//判断非空
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{
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return FLASE;
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}
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*rData = ringBuff->Ring_Buff[ringBuff->Head];//先进先出FIFO，从缓冲区头出
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// ringBuff.Head++;
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ringBuff->Head = (ringBuff->Head+1)%RINGBUFF_LEN;//防止越界非法访问
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ringBuff->Lenght--;
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return OK;
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}
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/**
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* @brief Read_Length_RingBuff
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* @param RingBuff_t *ringBuff
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* @return
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* @note
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*/
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uint8_t Read_Length_RingBuff(RingBuff_t *ringBuff)
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{
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return ringBuff->Lenght;
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}
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