Add documentation about MDNS + FreeRTOS = crash (#1880)

See #1875

Add documentation about MDNS + FreeRTOS = crash (#1880)
See #1875
762535fa · Earle F. Philhower, III · GitHub · 0e4fd058 · 762535fa
Unverified Commit 762535fa authored Dec 04, 2023 by Earle F. Philhower, III Committed by GitHub Dec 04, 2023
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docs/wifi.rst docs/wifi.rst +3 -1

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--- a/docs/wifi.rst
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@@ -42,7 +42,9 @@ Please note that WiFi on the Pico W is a work-in-progress and there are some imp

 * Multicore is supported, but only core 0 may run ``WiFi`` related code.

-  * FreeRTOS is supported only on core 0 and from within ``setup`` and ``loop`, not tasks, due to the requirement for a very different LWIP implementation.  PRs always appreciated!
+  * FreeRTOS is supported only on core 0 and from within ``setup`` and ``loop``, not tasks, due to the requirement for a very different LWIP implementation.  PRs always appreciated!
+
+  * LEAmDNS (``MDNS``) is not supported in FreeRTOS due to internal IRQ-time memory allocations.

 The WiFi library borrows much work from the `ESP8266 Arduino Core <https://github.com/esp8266/Arduino>`__ , especially the ``WiFiClient`` and ``WiFiServer`` classes.