gustavonihei opened a new pull request #3822:
URL: https://github.com/apache/incubator-nuttx/pull/3822
## Summary
This PR intends to add DMA support to the SPI Slave driver of the ESP32-C3
microcontroller.
## Impact
Only for ESP32-C3-based configurations using the SPI peripheral in Slave
mode.
DMA support needs to be explicitly enabled.
## Testing
Validated using a setup according to the following description:
- Two interconnected ESP32-C3 DevKit boards via the SPI interface
- One assuming the Master role, the other as Slave
- SPI Master sending data via spi tool application
- SPI Slave with a custom app reading data from SPI Slave chardev driver and
replying back to SPI Master
- SPI Master receiving reply as part of the next TX transfer
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