Hello,
Here is my SPI configuration and interrupt codes:
void SPIConfiguration(void){
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SPI3,DISABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SPI1,DISABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5| GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI_InitStructure.SPI_Direction =SPI_Direction_1Line_Rx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave ;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);
SPI_SSOutputCmd(SPI1,DISABLE);
SPI_I2S_ITConfig(SPI1,SPI_I2S_IT_RXNE,ENABLE);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);
NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void SPI1_IRQHandler(void){
if (SPI_I2S_GetITStatus(SPI1,SPI_I2S_IT_RXNE)== SET)
{
SendTest=SPI_I2S_ReceiveData(SPI1);
}
if (SPI_I2S_GetITStatus(SPI1, SPI_I2S_IT_TXE)== SET )
{
SPI_I2S_ITConfig(SPI1, SPI_I2S_IT_TXE, DISABLE);
}
}
But I just receive 0 while the input data and CLK are available and valid(I checked them on the oscilloscope)(the transmitter is another STM32 whose settings is approximately the same (instead of SPI_Mode_Slave, SPI_Direction_1Line_Rx).
MOSI->MOSI
CLK->CLK
what is my mistake?
