I suppose for the S2 you used the example code you mentioned previously, or some other test code?
Anyway thanks a lot! I will give it a go when I find some time

I'm referring to the memory apertures for RAM and flash only being 4MiB on the ESP32 Is this an SDK or a HW limitation? For the Esp32s2 the HW clearly has support for more (and it seems to work). Also I can see in the SDK code paths for 2,4,8 Mb of PSRAM. Do you have any suggestions on how to get m...

However, I'm not sure if you can map more than 4MiB of *contiguous* RAM on the S2, so that may be a limit. @ESP_Sprite, I found this statement " PSRAM — 2MB: Supported, 8MB: Not supported (IDF-968) " in the ESP32-S2 support status in ESP-IDF thread (https://esp32.com/viewtopic.php?t=14532#). Are yo...

ESP_Sprite wrote: What OS do you use on the PC side? What do you use to send these packets?

I am using Windows 10 and a test app I made that uses the com port through the Qt5 framework.

@chegewara Thanks for the suggestion, I will try that in next tests

The crash does not seem to reproduce now. It could be unrelated so I will report if it comes back. The packet size issue however still bothers me. I am actually using the example tusb_serial_device example code from the directory that chegewara mentioned. My test sends a packet of fixed data size fr...

Hello all. I have tried to use the internal USB in CDC mode with the TinyUsb library and I get occasional crashes in some task_wdt.c file. Also i have problems sending packets with more than one byte size. After sending more than a couple of packets with more than one bytes the Esp32s2 stops sending...

Hi. I know about those functions but as you say they only map in the ICache area of 4MB which is not sufficient. Nevertheless I dag a bit deeper in the SDK code and I have now code the can map 10MB of the FLASH to DCache. The code seems to work and correctly access all the data. What I am wondering ...

Hello all. My application needs large flash storage for data (not code). I have a 16 MB chip I intend to use. The TRM suggests that I can map 10.5MB flash for data access to DCache. I tried to do that calling the DCache rom functions (similar to the way psram init function works) but reading the mem...