Are there specific models that you use?

My sketch for ESP32-WROOM works flawlessly.
But when I load it into ESP32-WROOM-32U I have problems:
for example I2C does not start at 80 MHz, but WIFI does not start at 40 MHz.

What is the difference between the two types of controllers :?:
How to migrate from just WROOM to WROOM-32D / U :?:

I ...

Thank you all! :D
https://pp.userapi.com/c851028/v851028797/37525/qvo41AF2mbw.jpg
But in the specification for the antenna indicated that it is a ufl connector.
Where is the truth?
What kind of antennas do you use?
Drawing ufl connector from ESP32 https://www.espressif.com/sites/default/files ...

I bought an antenna 2042811100 MOLEX. https://www.molex.com/molex/products/datasheet.jsp?
part=active/2042811150_ANTENNAS.xml
https://www.molex.com/pdm_docs/iso/204281_ISO.jpg
But it does not stick into the slot on module ESP32-WROOM-32U.

https://ru.mouser.com/images/espressifsystems/images ...

Y SPI slave at the moment uses DMA if I recall correctly, so no need to read the DMA stuff. We do have the restriction that the length of the transaction (t.length) should be exactly the amount of bits transferred; if not, the DMA engine can get confused and less than the expected amount of bits can ...

You can provide a working example?

How use DMA?
Simple past in my code?

Thanks for the answer, but I did not understand how to use the SLAVE MODE.
The master mode is very good.
The buffer length is the same for the master and for the slave.
Also, I can not get by sending data from the slave to the master through the MISO line. (I check with an oscilloscope)
I fill in ...

I read to "ESP32 Technical Reference Manual"what resiving data saved id SPI_W0_REG ~ SPI_W15_REG.
Can I read registers from esp-idf?
How i can it do?

Friends, I'm trying to start slaving the SIP mode.
the master gives a good premise (see fig.)
https://pp.userapi.com/c639124/v639124872/51e3a/PNSK6sDfk-U.jpg
I'll use the code from the example:

#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>

#include "freertos ...