You probably want to use polling mode here for the SPI transaction. Also note that the SPI peripheral on the ESP32 in general isn't that good at running small transactions at high speed, as the CPU needs to handle each start and end of the packet. If I recall correctly, the S2 and later are more ca...

Hello, I'm using MCP3201 which is very easy to use. For this transaction I don't need to send anything, just listen to 16 bits of data. I should get 100k samples per second, but it takes a very long time, like 4 times more. SPI Clock: 111111111.png #include <stdio.h> #include <stdlib.h> #include <st...