ESP32 Forum

Hello everyone
I have a problem with ESP32-WROOM32U-16MB(MFN16)

When for the first time I power it on, it does not run default flashed program which indicates chip specification and it resets continuously. note that the chip flashes fine and works properly.
does this situation normal?

Check if the power supply is sufficient. Also use a capacitor (e.g., 10µF to 47µF) near the module's power pins to stabilize the voltage.

Thank you so much
I just know does the chip fake or not!
Does 16MB flash resets continuously when no program has not flashed on it?

power has been checked!
problem is where for the first time I power the module and it doesn't run factory program!
In this situation module continuously resets.
I want to detect does this module fake or not?

moeen_sa wrote: ↑

Sat Nov 16, 2024 5:17 am

it does not run default flashed program which indicates chip specification and it resets continuously

Fresh from the factory, there is no program in flash. So an 'empty' chip like this will fail to boot, reset, and continue failing until a) a program is flashed, or b) it is put into download mode and stops resetting while awaiting commands for flashing.

thank you for your reply

In other ESP32 chips, when powering it for the first time, it runs a default program which shows chip information
I'm wondering that this chip doesn't run the program that indicates chip info

Not all chips/modules come preprogrammed from the factory, and when there's no program in flash, the ESP32 will indeed bootloop trying to load one.

Thank you so much for your reply