Skip to main content

SPI

You need to enable the corresponding DMA channels in STM32CubeMX and also enable SPI interrupts.

Example​

The last parameter determines the minimum number of bytes required to enable DMA transfer. If the data size is smaller than this value, DMA will not be used.

STM32SPI spi1(&hspi1, spi1_rx_buf, spi1_tx_buf, 3);

Configuration File​

After code generation, an SPI configuration section will appear in the User/libxr_config.yaml file, formatted as follows:

SPI:
  spi1:
    tx_buffer_size: 32
    rx_buffer_size: 32
    dma_enable_min_size: 3

You can directly modify this file. To apply the updated configuration, run one of the following commands to regenerate the code:
xr_cubemx_cfg -d .
or
xr_gen_code_stm32 -i ./.config.yaml -o ./User/app_main.cpp