...that does not look like an error to me?

Thanks for reporting this. I think there's normally a link in the PDF where you can report an issue, but I've taken the liberty to file an internal ticket for you; we'll likely have this fixed in the next revision of the datasheet.

If you don't have a COM-port show up, the issue is almost certainly between your PC and the CP2102.

I'm guessing the fact that you're writing to spiffs is the culprit... I can't imagine that that filesystem is intended for high writes like you do, at some point you're just filling up the journal and the filesystem needs to collect garbage.

What SDK do you use? If esp-idf, simply run 'idf.py flash'.

The thing with ESP32s only having one radio is true, indeed, and for some things like BT/BLE, coexistence means the radio needs to switch between BT and WiFi channels. However, WiFi and ESP-Now both use the same protocol, and if you use the same channel for both, there's no switching necessary.

My point is that you're allocating about 48K of RAM, which is a non-trivial amount. Malloc will fail if you do not have that amount of free RAM and will return a NULL pointer. That guru meditation has all the hallmarks of you trying to dereference a null pointer (specifically EXCVADDR: 0x00000000). ...

Yes, given that you put the chip into download mode by starting with GPIO0 low.

Yes, you can; the ROM contains a driver that can flash the device over USB. You do need a way to be able to put it into download mode by grounding GPIO0, though.

neross wrote: ↑

Fri Apr 01, 2022 11:23 am

But this means that I would need to use both ESP-NOW, between the ESP32s, and WiFi to connect to the RPi, which is not really possible..

Where did you get that from?