SPI_I2S_Interrupts_Enable(SPI_SLAVE, SPI_I2S_INT_RNE);/* Enable SPI_SLAVE */ SPI_ON(SPI_...
SPI 模块可配置为支持 SPI 协议或者 I2S 协议。SPI 模块默认工作在 SPI 方式,可通过软件将其切换到 ...
while (SPI_I2S_GetStatus(SPI1_BUS, SPI_I2S_RNE_FLAG) == RESET) { time_out++; if (time_out > 200) { return RETVAL(E_RECV); } } SPI_I2S_ReceiveData(SPI1_BUS); tx_buf++; time_out = 0; } bsp_spi_cs_level(BSP_SPI_BUS1, SPI_CS_HIGH); } return RETVAL(E_OK); } int32...
time_out =0;while(SPI_I2S_GetStatus(SPI1_BUS, SPI_I2S_RNE_FLAG) == RESET) { time_out++;if(time_out >200) {returnRETVAL(E_RECV); } } SPI_I2S_ReceiveData(SPI1_BUS); tx_buf++; time_out =0; } bsp_spi_cs_level(BSP_SPI_BUS1, SPI_CS_HIGH); }returnRETVAL(E_OK); }int32_...
{ if(SPIJ2S_GetlTStatus(SPIl/ SPI_I2S_INT_RNE) == SET)I、 {SPI_ Data_ Rx[SPI_ Data_ lndex++] = SPIJ2S_RxData(SPIl); SPL^S^IearlNTPendingBitfSPIl, SPI_I2S_INT_RNE); 注意,通过AFIO_EXTICx配置GPIO线上的外部中断/事件,以及对寄存器 AFIO_EXTICX进行读写操作前,应当首先翻开AFIO的时钟...
(NVIC_InitStructure); SPI_I2S_INTConfig(SPI1, SPI_I2S_INT_RNE, ENABLE); //接收缓冲区非空中断 SPI_CRCEN(SPI1, DISABLE); SPI_NSSInternalSoftwareConfig(SPI1, SPI_ISS_SET); SPI_Enable(SPI1, ENABLE); } 在从机模式下,SPI_CTRL1 寄存器中 MCLKP[3:0]的设置不影响数据传输速率,即从模式下,...
SPI_I2S_Reset(SPI_MASTER);SPI_I2S_Reset(SPI_SLAVE);/* DMA configuration ---*/ SPI_DMA_Confi...