General • DMA in ring mode running continuously

I have a small buffer that I want to be continuously fed to the TX FIFO of a PIO SM. The size of the buffer is a power of two, so by using DMA ring mode I could avoid using two DMAs to prevent stream interruptions.
But even in ring mode a DMA stops after count transfers. Is there a way to have it running continuously without CPU intervention?

Statistics: Posted by morci — Fri May 09, 2025 7:29 pm

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