Thanks for the quick reply! Please note the open issue on GitHub, which is also affected by the function, but not related to my issue: https://github.com/espressif/esp-idf/issues/10414. While I'm at it: it would be really nice if I could pass void* arg to esp_execute_shared_stack_function, so that m...

I was wondering whether I could call esp_execute_shared_stack_function from multiple tasks. Looking at the implementation, the function doesn't seem to be thread safe. Mainly because it uses global static variables (e.g. xtensa_shared_stack_callback ). Although I have to pass a mutex, this is only u...

https://github.com/espressif/esp-idf/blob/3e370c4296247b349aa3b9a0076c05b9946d47dc/components/xtensa/esp32/include/xtensa/config/core.h#L1404-L1413 Interesting. The zero-overhead loop is already very constrained in terms of application. There are only few cases where this loop can be used anyways.

As it turns out, the compiler indeed uses these special OP codes and outputs them in at least -O2 mode. It just so appears that they're not being used in most of my functions, probably because the compiler found a better way? The following C code: static int my_min(int a, int b) { return a < b ? a :...

First of all, you don't need to use component.mk if you're using the CMake build system. You can find the documentation about embedding files here: https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-guides/build-system.html#embedding-binary-data Make sure you following the naming rules/...

As far as I know there aren't any, besides these already mentioned above (e.g. MUL16). If you would like to find out what Xtensa features are enabled, the overlaying headers for binutils could be helpful: https://github.com/espressif/xtensa-overlays/blob/master/xtensa_esp32/binutils/include/xtensa-c...

I was wondering why gcc wouldn't use specialized OP codes from the xtensa instruction set architecture (ISA). I'm using the ESP32-WROVER-B board, which itself uses the Xtensa LX6 microprocessor. From their Overview Handbook, I learned that the Xtensa LX processor family supports some specialized ext...

What status code do you get back from the API on the first call? Is it a "401 Unauthorized"? I assume curl automatically re-tries your request if you didn't provide any information about client certificate authentication, like your web browser, which prompted you first. I found this function in the ...