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Added documentation regarding delay() resolution in esp-idf component #3014

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Sep 30, 2020
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Added documentation regarding delay() resolution in esp-idf component #3014

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5 changes: 5 additions & 0 deletions docs/esp-idf_component.md
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Expand Up @@ -68,6 +68,11 @@ If you are writing code that does not require Arduino to compile and you want yo
#endif
```

## FreeRTOS Tick Rate (Hz)

You might notice that Arduino-esp32's `delay()` function will only work in multiples of 10ms. That is because, by default, esp-idf handles task events 100 times per second.
To fix that behavior you need to set FreeRTOS tick rate to 1000Hz in `make menuconfig` -> `Component config` -> `FreeRTOS` -> `Tick rate`.

## Compilation Errors

As commits are made to esp-idf and submodules, the codebases can develop incompatibilities which cause compilation errors. If you have problems compiling, follow the instructions in [Issue #1142](https://github.com/espressif/arduino-esp32/issues/1142) to roll esp-idf back to a known good version.