How did you install esp-idf?

The idea is that you can handle 4 different 'modes' at the same time, for example STA + AP + ESPNow + monitor mode. ESP-IDF handles this 'under the hood', you can simply e.g. set WiFi to sta+ap mode and start up esp-now.

That PC address, 0x6b726f77, looks like ASCII... 'work' if I decode it. That smells like you're trying to put too much data into one of the class members, overwriting your return address with ascii data.

Yep.

@WiFive and @ESP_Sprite Yes, thank you, I forgot that bootloader is also encrypted in flash. > Note that you're using the FFs as a nonce here. Cryptography-wise, there's nothing wrong with that in particular as far as I can tell No, as "nvs_flash_generate_keys" code says: https://github.com/espress...

Do you see the USB-serial-JTAG device the S3 has? If so, you actually need to burn a fuse to switch that over to use the USB-OTG peripheral instead on bootup.

I think you are right. The normal qualified fast-charger should active like this. However, the fast-charger in china maybe not very reliable. One of my Bluetooth ear-pods, the package said that do not use the fast charger. I think issues that fast-charger damage ear-pods often happens. Hm, that's f...

This I have also tried directly soldering the ESP32-C3-MINI-N4 module to the wires of the programmer without a PCB. No luck. leads me to think you may have mis-interpreted something in how to hook up that module, as in, it may not be your soldering process at fault. Can you share your PCB / schemati...

Yep, that looks like a mistake in the register description docs. I'll ping the documentation team to fix it. Looking at the ll hal layer of the i2c driver in esp-idf, the data register indeed is writable, and sr.tx_fifo_cnt should indeed increase when you write that. Are you sure the I2C peripheral ...

WiFive has a point. You need to read something in flash that is unencrypted, as if it were encrypted flash; the other way around does not make your key secret anymore. If you don't like looking for 0xFFs or writing to flash, how about creating a small partition that never is written to (and as such ...