I would just have a question before closing the topic,

How can I configure this SPI communication to use DMA?

What would be the maximum size of data I could send?

To transfer big amount of data (a file) could we imagine a ring buffer method to send step by step (package by package) my file ...

Hi,
Thanks for your repply, I investigate this morning and I found my problem.
Yesterday I was using a bad oscillo and the message I was sending was way too short.

I modified the message I send like this:

uint8_t data_to_send[10] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10 ...

Hi

I'm very new with ESP32 microprocessors. I use ESP-IDF extension on Visual Studio.

My objective is to initialize an SPI communication between two microcontrollers.

I have the impression that I made everything right but I can't manage to have anything on my oscilloscope when I watch the CLK or ...