81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#include "NetFIFO.h"
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/**
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* @brief 初始化环形缓冲区
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* @param pBuffer: 缓冲区结构体指针
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* @retval None
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*/
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void vNetBufferInit(NetFifoBuffer_t *pxBuffer)
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{
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if (pxBuffer == NULL) return;
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memset(pxBuffer->cResponseBuffer, 0, sizeof(pxBuffer->cResponseBuffer));
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pxBuffer->ucBufferIndex = 0;
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}
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/**
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* @brief 向缓冲区写入数据
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* @param pxBuffer: 缓冲区结构体指针
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* @param cData: 要写入的数据
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* @retval None
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*/
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void vNetBufferWrite(NetFifoBuffer_t *pxBuffer, char cData)
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{
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if (pxBuffer == NULL) return;
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if (pxBuffer->ucBufferIndex < sizeof(pxBuffer->cResponseBuffer) - 1)
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{
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pxBuffer->cResponseBuffer[pxBuffer->ucBufferIndex++] = cData;
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pxBuffer->cResponseBuffer[pxBuffer->ucBufferIndex] = '\0'; // 确保字符串终止
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}
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}
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/**
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* @brief 从缓冲区读取指定索引的字节
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* @param pxBuffer: 缓冲区结构体指针
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* @param index: 要读取的字节索引
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* @retval 读取的字节，索引无效时返回'\0'
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*/
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char cNetBufferReadByte(NetFifoBuffer_t *pxBuffer, int index)
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{
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if (pxBuffer == NULL) return '\0';
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if (index < 0 || index >= pxBuffer->ucBufferIndex)
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{
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return '\0'; // 索引无效
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}
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return pxBuffer->cResponseBuffer[index];
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}
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/**
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* @brief 比较缓冲区内容与指定字符串
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* @param pxBuffer: 缓冲区结构体指针
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* @param pcStr: 要比较的字符串
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* @retval true: 匹配成功, false: 匹配失败
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*/
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bool bNetBufferCompareStr(NetFifoBuffer_t *pxBuffer, const char *pcStr)
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{
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if (pxBuffer == NULL || pcStr == NULL) return false;
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return (strstr(pxBuffer->cResponseBuffer, pcStr) != NULL);
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}
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/**
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* @brief 获取缓冲区当前长度
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* @param pxBuffer: 缓冲区结构体指针
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* @retval 缓冲区长度
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*/
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int iNetBufferGetLength(NetFifoBuffer_t *pxBuffer)
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{
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if (pxBuffer == NULL) return 0;
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return pxBuffer->ucBufferIndex;
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}
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/**
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* @brief 清空缓冲区内容
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* @param pxBuffer: 缓冲区结构体指针
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* @retval None
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*/
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void vNetBufferClear(NetFifoBuffer_t *pxBuffer)
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{
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if (pxBuffer == NULL) return;
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memset(pxBuffer->cResponseBuffer, 0, sizeof(pxBuffer->cResponseBuffer));
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pxBuffer->ucBufferIndex = 0;
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}
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