SPI接收中断只能接收一次正确的数据

xu1500998465

void SPI_slave(void)
{
       
   NVIC_InitType NVIC_InitStructure;
         SPI_InitType  SPI_InitStructure;
         GPIO_InitType GPIO_InitStructure;
         RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_SPI1,ENABLE);
         RCC_AHBPeriphClockCmd(RCC_AHBPERIPH_GPIOA,ENABLE);
         GPIO_StructInit(&GPIO_InitStructure);
         GPIO_InitStructure.GPIO_Pins =GPIO_Pins_4|GPIO_Pins_5 | GPIO_Pins_6 | GPIO_Pins_7;
        GPIO_InitStructure.GPIO_MaxSpeed = GPIO_MaxSpeed_50MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
         //SPI1
        SPI_I2S_Reset(SPI1);
  SPI_DefaultInitParaConfig(&SPI_InitStructure);
  SPI_InitStructure.SPI_TransMode = SPI_TRANSMODE_RXONLY;
  SPI_InitStructure.SPI_Mode = SPI_MODE_SLAVE;
  SPI_InitStructure.SPI_FrameSize = SPI_FRAMESIZE_8BIT;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_HIGH;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_1EDGE;
  SPI_InitStructure.SPI_NSSSEL = SPI_NSSSEL_SOFT;
  SPI_InitStructure.SPI_MCLKP = SPI_MCLKP_8;
  SPI_InitStructure.SPI_FirstBit = SPI_FIRSTBIT_MSB;
  SPI_InitStructure.SPI_CPOLY = 7;
  SPI_Init(SPI1, &SPI_InitStructure);
        SPI_I2S_INTConfig(SPI1,SPI_I2S_INT_RNE,ENABLE);
        SPI_Enable(SPI1, ENABLE);

  /* Configure the NVIC Preemption Priority Bits */  
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
  /* Enable the DMA1 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
       
}
这是我的配置

xu1500998465

现在主机发送数据，能够正常进入中断，只能第一次接收的数据正常，以后的数据是不正常

正点原子

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