TLDR: It was likely a layout issue on my board. I've seen the issue twice now: Before it happens, I'm able to use the USB-CDC bootloader to flash and run firmware. However, sometimes after leaving a firmware running for some time (2-8 hours), it crashes, and doesn't start again after cycling power. ...

I'm looking for the speed specification for the embedded flash in the ESP32-S2FH4. It doesn't seem to be in the datasheet or technical reference manual, is it available somewhere? I assumed it was safe to use at 80 MHz, but have seen very intermittent errors when flashing it, so some sort of officia...

Posted a bug report here: https://github.com/espressif/esp-idf/issues/7404 , it's possibly the same issue that was reported here: https://github.com/espressif/esp-idf/issues/6969

The S2 staying in download mode when started with GPIO0 pulled down is to be expected; there's no way to get it to start up in 'normal' mode when it's booted in download mode (something with security issues, iirc). Thanks! It might be helpful for the documentation to mention this, since it's differ...

I'm bringing up a new board with an ESP32-S2F4 . I'm able to program the board successfully with DFU if I manually enter the bootloader by holding GPIO0 low during reset, however: 1. After DFU programming, the part seems to stick in bootloader mode, and doesn't run the newly flashed application firm...