How to use SPI DMA function in ESP32-S3?
Posted: Wed Nov 15, 2023 12:14 pm
In my project, ADC data transfer via SPI. At present, host(ESP32-S3) read SPI data when GPIO interrupts are triggered by ADC's DRDY signal. In this way, it takes up a lot of kernel time and the ADC update speed is limited. Can I directly use DMA to read ADC data through SPI? Are there any related examples to refer to?