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  1. R

    Teensy 4 and SPI async: how to "overlap" DMA access?

    That is a good alternative I will try for sure! Thanks for the suggestion. Yeah, the device does accept input, so I'd rather feed zeroes onto SDO.
  2. R

    Teensy 4 and SPI async: how to "overlap" DMA access?

    Thanks, that's very helpful! I'll give it a go next week
  3. R

    Teensy 4 and SPI async: how to "overlap" DMA access?

    Thanks for your input. Do I understand correctly that the implementation should be like this: Reimplement SPI.transfer(tx, rx, count, er&) where: _dmaRX and _dmaTX both alternate between two DMASettings using replaceSettingsOnCompletion()? I found this code as inspiration. Would that be the...
  4. R

    Teensy 4 and SPI async: how to "overlap" DMA access?

    Hi there, first of all thanks for the amazing work on Teensy: it is a great platform :) I am communicating with a peripheral device running at an SPI clock speed of around 25 MHz. I am clocking out 192 bits each 10 microseconds, and if I didn't use asynchronous SPI the microprocessor would be...
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