SPI communication - interval between bytes

[pass3master]

Question about SPI communication interval

We are using HAL_SPI_TransmitReceive to achieve SPI communication, but there is an interval of some us after the SCLK outputs for 8 bits. Is it possible to change this interval time?

[Andrew Neil · Accepted solution]

That's probably just the overhead in the HAL code while it handles completion of the previous byte, fetches the next byte, and starts transmission of that next byte.

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@pass3master wrote:

Is it possible to change this interval time?

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What compiler optimisation level are you currently using? What happens if you increase it?

Have you tried using DMA?

Otherwise, optimise the code by hand.

[pass3master]

Thank you for your response.
I see what you mean!

Then we can optimize the HAL code or use DMA for SPI communication!