espressif: busio.SPI: Use SPI_DMA_CH_AUTO #5660
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
All 3 micros we care about (S2, S3, C3) state in the documentation that DMA channel can be specified as SPI_DMA_CH_AUTO.
Specifying a specific DMA channel explicitly doesn't ever work on ESP32-S3, so no SPI bus could be used.
Testing performed: On the ESP32-S3-DevKitC, used neopixel_spi to turn the onboard neopixel red, green, and blue. However, I didn't test any S2 boards even though it "should just work".