glenn20 12dbbc8065 docs/library/espnow: Update espnow docs for WLAN.config(pm=x) options.
Update docs/library/espnow.rst to add:
- guidance on using WLAN.config(pm=WLAN.PM_NONE) for reliable
  espnow performance while also connected to a wifi access point;
- guidance on receiving encrypted messages;
- correction for default value of "encrypt" parameter (add_peer());
- guidance on use of ESPNow.irq(): recommand users readout all messages
  in the buffer each time the callback is called.

Signed-off-by: Glenn Moloney <glenn.moloney@gmail.com>
2023-05-19 21:48:08 +10:00
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