stm32f401使用cube生成spi3与dw1000通信

530147876

stm32f401使用cube生成spi3与dw1000通信，时钟84m
void MX_SPI3_Init(void)
{

  hspi3.Instance = SPI3;
  hspi3.Init.Mode = SPI_MODE_MASTER;
  hspi3.Init.Direction = SPI_DIRECTION_2LINES;
  hspi3.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi3.Init.NSS = SPI_NSS_SOFT;
  hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;
  hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi3.Init.CRCPolynomial = 7;
  if (HAL_SPI_Init(&hspi3) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }
}

属性配置都没问题

530147876

这是spiread函数主体
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_RESET);
memcpy(Buffer, header, headerLength);
HAL_SPI_Transmit(&hspi3, (uint8_t *)Buffer, headerLength, SPI_DELAY_TIME);
HAL_SPI_Receive(&hspi3, (uint8_t *)Buffer, dataLength, SPI_DELAY_TIME);
memcpy(data, Buffer, dataLength);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_SET);
但是HAL_SPI_Receive中buffer都为0xFF

530147876

读到的数据都为0xFF，但却也有偶然出现正确的情况，十分不解

正点原子

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