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STM32F446 SPI transfer with DMA to ST1642GW LED Driver

Question asked by heptner.florian on Oct 26, 2016
I'd like to transfer data from STM32F446 MCU to an array of ST1642GW LED drivers efficiently.

Right now, I do so by a soft SPI interface which is limited in speed and consumes too much CPU time.

The real challenge as I see it is the synchronous Latch and MOSI transfer. I have 16 clock cycles for data transfer and command at the same time.

Is there a possibility to do so by using the standard peripherals, or, even better, use additional DMA?

Thanks!

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