Hi,
i want to run a task that read data from spi in every 0.25us
(read the data from A/D)
any suggestion for ESP32-S3 ?

"Quad Output" mode of the SPI peripheral may be what you need, see https://docs.espressif.com/projects/esp-idf/en/v5.3.1/esp32s3/api-reference/peripherals/spi_master.html#transaction-line-mode


Which means using 4 wires of data output from A/D ?
What about data into A/D ?
Do I have to share the ...

I want to use esp32-s3 to read data from analog to digital converter AD7386-4 which communicates by using SPI.

https://www.analog.com/en/products/ad7386-4.html#part-details

but the SPI of AD7386 is very custom.

It requires 4 wires for data out and 1 wire for data in.

The question is, is it ...