Probably one of your two transistors is broken, that control the DTR RTS signals.

Hello, I have tested the radiated power of an esp-wroom-32 module using the wifiscwout command and I found problems with parameter 3. What I understand from the documentation is that when parameter 3 is 0, I should have the highest power and then for every single unit attenuation increases 0.25dB. U...

Isn't there an official test of Espressif of the radiation pattern?
I am interested for WROOM-32D

Thanks a lot for the answers. Using this dummy flag I was able to produce 40 MHz at the MOSI.

Hi, I read the previous posts but I think they still are not quite clear. So the version of ESP32 now is using the 5,10,20,40 mA levels? Apart from that, this current is the total current the CPU supplies to all the pins? Meaning that in each pin the current is much lower, if more than one pins are ...

I'm 100% sure that I have a 40MHz crystal. Check attachment too. I will try first to include SPI_DEVICE_NO_DUMMY in order to ignore this checking, as the error message in red is saying. If it doesn't work, I will go to the registers

I am using ESP-WROOM-32D module on the devkitc. I see that the module has a 40 MHz crystal.
Then how can I verify what you say about the internal bus clock? Where is that located? Isn't that derived from the CPU's clock as well?

I am having the same issue, but probably has to do with the CPU frequency. I can measure SPI at maximum 26 MHz. When I set it at 40, my scope doesn't show any signals. How can I change the CPU frequency higher? Is the function included in one of the examples?

Hi,

I would like to mount ESP32-DevKitC-32D on a fixture to test vibration.
Is there any ESP32-DevKitC-32D on the market without the long pins around it?
Meaning the ones in the picture attached.
Those pins don't allow me to mount my board on the fixture as wished.

Actually I disoldered the module WROOM from the devkitc and I only connected the UART pins, VCC, ground and EN and GPIO0 to gnd with buttons the last two of them. So if I don't press the button ENABLE and GPIO0 are floating if I press the button the go low. I wanted to verify that I can program the ...