Infinite data transmit using SPI

[SPark.28]

I am testing with STM32F769 Discovery board to make video syncs (not vsync, hsync).

I am using SPI module to make infinite clock and data.

But, it seems not supported in normal and DMA transmit mode (there is delay between transmissions).

How should i do to transmit data and clock signal infinitely without delay?

[KnarfB · Accepted solution]

Depends on the freq. range and data width. Alternatives may be DMA driven GPIO port output or DMA driven modulated Timer PWM.

[TDK]

Circular DMA is able to transmit infinitely without delay. I have used it on many projects in this way.