IMHO there is no such. You can find some notes in this thread speaking about ROM content.

You're looking for the xTaskGetCurrentTaskHandle function.

Would not uart_tx_chars function fit for your needs? According to docs (have not checked the source), it should return immediately when the TX FIFO is full, returning number of bytes enqueued.

Coincidentally, how to get ESP32 binary disassembly was one of my first questions in this thread.

Where are defined brownout voltage level on esp-idf ? The level is defined by the CONFIG_ESP32_BROWNOUT_DET_LVL_SEL project configuration option. Is it possible to change the default values ? Only for test purpose No, because the voltage levels are fixed in HW by enumeration values of the RTC_CNTL_...

Not an answer, but a note; you may get disassembly by yourself. Because so long you really want the best optimization for your code, you should consult generated assembler code anyway.

You can use a timer from which you would send the data in turn for each LED with every tick. And such timer you'd then control from button interrupt routine.

and he's telling me to Check the readme file here, but he doesn't tell me where " here " is. It could be inside his house, I don't know. I guess he meant the example's readme (specifically this paragraph , I'd say). If so, it turns you to the same menu item that you've already discovered but could ...

And I suppose to restart the same timer later when I need it, I'll do: timer_start(TIMER_GROUP_0, TIMER_1); right? That's correct. You may find both methods used e.g. in this example . Any idea why the documentation says: esp_err_t timer_pause(TIMER_GROUP_0, TIMER_1); but in fact we don't need this...

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