8000 esp8266, esp32: WiFi: clarification about PowerManagement attributes · Issue #15168 · micropython/micropython · GitHub
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esp8266, esp32: WiFi: clarification about PowerManagement attributes #15168

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massimosala opened this issue May 30, 2024 · 1 comment
Open
2 tasks done

esp8266, esp32: WiFi: clarification about PowerManagement attributes #15168

massimosala opened this issue May 30, 2024 · 1 comment

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@massimosala
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massimosala commented May 30, 2024 •
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  • I've searched for existing issues and didn't find any that matched.

Documentation URL

https://docs.micropython.org/en/latest/library/network.WLAN.html

Description

Trying to disable PowerManagement on a esp board acting as client WiFi.

The last doc says:

Constants
WLAN.PM_PERFORMANCE
WLAN.PM_POWERSAVE
WLAN.PM_NONE

I tried from REPL:

from network import *
nic = WLAN(STA_IF)
nic.config(pm = WLAN.PM_NONE)

dir(nic)
['__class__', 'PM_NONE', 'PM_PERFORMANCE', 'PM_POWERSAVE', 'active', 'config', 'connect', 'disconnect', 'ifconfig', 'isconnected', 'scan', 'status']

Questions:

  1. So the attributes are available also on the nic instance: is it wanted or is just a leftover from the past ?

  2. esp32: do these attributes make obsolete the previous setting listen_interval ?
@glenn20
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glenn20 commented Jul 1, 2024
  1. So the attributes are available also on the nic instance: is it wanted or is just a leftover from the past ?

This is as expected, ie. PM_NONE etc are effectively attributes of the WLAN class, so they will appear as attributes of instances of WLAN as well, so you may just as well use nic.PM_NONE as WLAN.PM_NONE.

  1. esp32: do these attributes make obsolete the previous setting listen_interval ?

I am not aware of a listen_interval setting (I checked back as far as v1.17).

For the esp32, the levels correspond to the setting decribed in the Espressif docs. The default value for the listen_interval when using PM_POWERSAVE is 3 (which can't be changed from micropython). See PR #8993 for more discussion about the pm settings.

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