SPI + DMA receive only on STM32F4

[diverger]

Posted on September 13, 2017 at 16:56

In my situation, I need to do SPI receiving with DMA (master side), and not care about Tx. I have three choices in the STM32Cube:

1. Full-duplex master
2. Half-duplex master
3. Receive only master

And I have two choices for HAL with DMA support:

1. HAL_SPI_Receive_DMA()
2. HAL_SPI_TransmitReceive_DMA()

Anyone can confirm me which combination can send dummy bytes for me to clock the data in?

#spi