After a lot of testing and with the help of one of my friends, I realized the problem.
The noise was affecting the esp32 through the serial port that was between the MC20 module and the ESP32!
This problem was solved by disconnecting.
Now my question is, how can I remove this noise?

I reset the RTC_CNTL_GLITCH_RST_EN bit to zero, the problem is not solved, I set it to one, it is not solved!
I calculated and placed the values of the capacitors accurately, but the problem was not solved.
I'm confused

Yes, I came to this conclusion, I will definitely test this item today, I have a lot of doubts about the crystal capacitors, so I will test it today.

hi,I added the capacitor but it didn't make a difference, I was able to get a better log and I realized that the cause of the reset was GLITCH_RTC_RST. Do you have a solution for this error? ESP-ROM:esp32c3-api1-20210207 Build:Feb 7 2021 rst:0x13 (GLITCH_RTC_RST),boot:0xd (SPI_FAST_FLASH_BOOT) SPIWP...

With the method you said, I was able to get the log, only one was mixed with my data, in any case, I separated one from the log, if you need I can send you most of it (2-3 minutes). It is not possible to install C29, because it is masked inside the schematic and not inside the pcb, if you doubt it, ...

Unfortunately, I only have the USB connection and I cannot see the log(Because the micro is reset. The usb port is reset and the initial log of the device is lost, if you have a way to get it, tell me), but if you need a special register, I will print it separately. Yes, I will send you the schematic

I checked the power supply with an oscilloscope, there is no change, even if browning out, it should write the reason for the reset. The important point here is that by removing the crystal capacitors, this problem will be fixed to some extent. Only when we don't have crystal capacitors, Bluetooth d...

Hello I have designed an iot device using esp32-c3 and quactel mc20 module. I have a big problem! When the mc20 module is without a SIM card, the esp32 continues to work without problems. But when the SIM card is placed on the device, after a few seconds esp32-c3 starts to reset with a cycle of appr...

hi dears... I designed a custom esp32-S3 board and I program the board using the USB interface. Almost most of the parts have been tested and worked without problems, recently I found out in the Bluetooth test that this part does not work at all. I searched the forum, several people had my problem, ...