/ For simplicity reasons, this example is just waiting till the end of the
transfer, but application may perform other tasks while transfer operation
is ongoing. /
while (HAL_SPI_GetState(spi_handle) != HAL_SPI_STATE_READY);
在这个地方卡死
问 使用rtthread官方例程读取SD卡信息，在rt_device_open处卡死