spi四种工作模式时序图 spi通信时序图详解( 三 ) _知识分享

uint8_t SPI1_WriteReadData(uint8_t dat){uint16_t i = 0;
/* μ±·￠?í?o3??÷?? */ while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET){i++;if(i > 10000){return 0xFF;}}
/* ·￠?íêy?Y */SPI_I2S_SendData(SPI1, dat);
/* μè′y?óê??o3??÷?a·??? */while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
/* ???áè?μ?μ?êy?μ·μ?? */ return SPI_I2S_ReceiveData(SPI1);}
/***************************************************************************** Function Name: SPI2_WriteReadData* Description: ê1ó?SPI2D′è?ò???×??úêy?Yí?ê±?áè?ò???×??úêy?Y?￡* Input: dat￡oD′è?μ?êy?Y* Output: None* Return: ?áè?μ?μ?êy?Y** ?áè?ê§°ü·μ??0xFF****************************************************************************/
uint8_t SPI2_WriteReadData(uint8_t dat){uint16_t i = 0;
/* μ±·￠?í?o3??÷?? */ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET){i++;if(i > 10000){return 0xFF;}}
/* ·￠?íêy?Y */SPI_I2S_SendData(SPI2, dat);
/* μè′y?óê??o3??÷?a·??? */while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
/* ???áè?μ?μ?êy?μ·μ?? */ return SPI_I2S_ReceiveData(SPI2);}