kissste
Member
I'm having trouble with toggling CS pin when running SPI in DMA mode.
It does not toggle/switch CS when if I keep supplying continuous DMA stream (on an interrupt send a next DMA). I would like it be able to specify that I want it switch/toggle CS once one DMA transfer is finished.
The only way to toggle CS is let the DMA channel close, but then re-opening it takes over 8 us and I need max 3.2us. I was able reduce it to 5.7us by re-writing SDK provided libraries but to go any further I need to replace ROM functions.
Any suggestions? Thank you very much.
It does not toggle/switch CS when if I keep supplying continuous DMA stream (on an interrupt send a next DMA). I would like it be able to specify that I want it switch/toggle CS once one DMA transfer is finished.
The only way to toggle CS is let the DMA channel close, but then re-opening it takes over 8 us and I need max 3.2us. I was able reduce it to 5.7us by re-writing SDK provided libraries but to go any further I need to replace ROM functions.
Any suggestions? Thank you very much.
