Topic: - DMA in SPI using stm32l452re nucleo board. 1. currently i am using spi to transfer data from a sensor to the mcu. for enabling dma in it do i have to just enable the dma request in ".ioc file", or what changes do i need to make in the main.c?

[NPatr.1]

 

Also we have tried DMA with SDIO using FATFS file system and we are not successful.

[Imen.D]

Hello @NPatr.1​ and welcome to the Community :)

When DMA is used, the MX_DMA_Init shall always be called before any other HAL_***_Init (where *** is any peripheral with a HW dependency on DMA init code).

Please refer to this post for more details : MX_DMA_Init order in the main.c file generated by STM32CubeMX, How to fix?

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Imen