Note: CAN/TWAI should now work during OTA as of this commit. See docs for more details.

There is some delay and variation to when your interrupt will run. Usually when an interrupt occurs, it takes 2 or 3 microseconds to get into the interrupt. However, you can't assume that this means your interrupt will run 2 to 3 us after an edge as there are other factors that can prevent your inte...

The error LoadProhibited means that the CPU tried to load a variable form an illegal address. The offending address is EXCVADDR: 0x00000000 ( see docs for more details ). The address 0x00000000 looks like some NULL pointer was accessed. The offending line of the bad load was 0x400da3d9: pin::calc_an...

So does FreeRTOS pvPortMalloc() also use heap_caps_malloc()? No, because pvPortMalloc() itself is never called. Based on the enabled FreeRTOS configs, pvPortMallocTcbMem() and pvPortMallocStackMem() are called instead. All of these macros are defined in port_macro.h What about the malloc hook/callb...

Hi, The FreeRTOS documentation suggest to use the pvPortMalloc() / pvPortFree() and vApplicationMallocFailedHook() when handling memory allocation. The ESP-IDF documentation points to heap_caps_malloc() / heap_caps_free() and heap_caps_register_failed_alloc_callback() for the same memory handeling ...

As the error suggest, the CMake is seeing a "build" folder which "doesn't seem to be a CMake build directory" so it is "Refusing to automatically delete files". Try deleting the build folder in your "hello_world" project and then run "idf.py set-target esp32" again.

Use esp_backtrace_print() in esp_debug_helpers.h

None of them is "occupied" by FreeRTOS. Why would they need to take them from "users"? Generally, most operating systems have a "system tick" which requires an interrupt be generated at a regular interval. This usually requires some form of hardware timer be used to generate this system tick for th...

The question is: Is there a way to trigger the ADC with the SOF (start of frame bit) of the CAN frame on the CAN bus? Currently no, the CAN controller will only generate an interrupt once a CAN message has been confirmed valid (i.e., Acknowledged and CRC is checked). If you need an interrupt on the...

You can get the disassembly yourself by running either objdump or gdb:

Assuming your project folder is "hello-world":
Once in GDB, run: