STM32 SPI从机无法正确读取数据并传输错误数据

Question

我正在尝试将数据从 stm32F411 主设备传输到 stm32F411 从设备。该数据将用于配置数据并将数据写入连接到从站的 SD 卡。我正在使用从站来卸载将数据传输到 SD 卡的工作。从机侧的 SPI 通过轮询处理，不使用 DMA 或中断。这两个项目都是使用 CubeIDE 设置的。

问题在于从站似乎无法正确接收数据，因为数据已损坏、以某种方式移位或丢失字符。从机也没有正确地将数据传输回主机，仅发送看起来像虚拟数据的内容。

主控SPI配置：

static 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_16;
   hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
   hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
   hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
   hspi3.Init.CRCPolynomial = 10;
   if (HAL_SPI_Init(&hspi3) != HAL_OK)   {
     Error_Handler();
   }
 }

从机 SPI 配置：

static void MX_SPI1_Init(void)
{
  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_SLAVE;
  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi1.Init.NSS = SPI_NSS_HARD_INPUT;
  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi1.Init.CRCPolynomial = 10;
  if (HAL_SPI_Init(&hspi1) != HAL_OK)
  {
    Error_Handler();
  }
}

掌握逻辑和示例输入：

sd_open_file("Quadcopter.txt", FA_WRITE | FA_READ | FA_OPEN_ALWAYS);

uint8_t sd_open_file(const char *file_name, uint8_t instruction){
        uint8_t response[1];
        uint8_t command = LOGGER_SD_OPEN_FILE;
        uint16_t file_length = strlen(file_name)+1;
        uint16_t total_length = file_length+1;
        uint8_t transmit_length[] = {(total_length >> 8) & 0xFF, total_length & 0xFF};
        uint8_t transmit_buffer[total_length]; // string length, \0 and command
        transmit_buffer[0] = instruction;
        memcpy(&transmit_buffer[1], file_name, file_length); // Copy the string including null terminator.


        HAL_StatusTypeDef status;
        slave_select();
        status = HAL_SPI_Transmit(m_device_handle, &command, 1, 5000); // send command
        status = HAL_SPI_Transmit(m_device_handle, transmit_length, 2, 5000); // send how many bytes the dat will be
        status = HAL_SPI_Transmit(m_device_handle, transmit_buffer, total_length, 5000); // send data
        status = HAL_SPI_Receive(m_device_handle, response, 1, 5000);
        uint8_t data[200];
        status = HAL_SPI_Receive(m_device_handle, data, total_length, 1000);
        slave_deselect();
...
}

从逻辑：

HAL_StatusTypeDef spi_slave_result_receive = HAL_SPI_Receive(&hspi1, slave_buffer, 1, 1000);

...c

HAL_StatusTypeDef status_receive;

// We ask how much data should we receive. 
if((status_receive = HAL_SPI_Receive(&hspi1, slave_buffer, 2, 1000)) != HAL_OK){
    break;
} 
uint16_t amount_of_data_to_receive = (slave_buffer[0] << 8) | slave_buffer[1];

// Receive the instruction and file name
if( (status_receive = HAL_SPI_Receive(&hspi1, slave_buffer, amount_of_data_to_receive, 1000)) != HAL_OK){
    break;
} 
// instruction is byte 0
char* extracted_string = extract_string_from_spi_data_at_index(slave_buffer, SLAVE_BUFFER_SIZE, 1);

volatile uint8_t result = sd_open_file(extracted_string, slave_buffer[0]);
HAL_SPI_Transmit(&hspi1, &result, 1, 100);
HAL_SPI_Transmit(&hspi1, slave_buffer, amount_of_data_to_receive, 100);
free(extracted_string);

我尝试通过逻辑分析仪查看 SPI 总线。我可以看到主人正确地传输了一切。从机返回一些错误数据。