Turn WIFI Off On ESP8266 Boards

[jmwright]

Is there a way to turn the WIFI off on 8266 boards using MicroPython? Turning the WIFI off when using Arduino is discussed here: https://github.com/esp8266/Arduino/issues/644

[mcauser]

Is this what you are after?

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import network
sta_if = network.WLAN(network.STA_IF)
sta_if.active(False)
ap_if = network.WLAN(network.AP_IF)
ap_if.active(False)

http://docs.micropython.org/en/latest/e ... networking
http://docs.micropython.org/en/latest/e ... sleep-mode

[jmwright]

Yes, thank you mcauser. At least with the Arduino, it sounds like sometimes the 8266's WIFI capability isn't shut down properly and still continues to draw full power. I'll need to double check to see if that happens with this board.

[kfricke]

Only the interfaces are deactivated. There is no reduction in RF power usage implemented as far as i do understand from the source code.

[jmwright]

Ok, thanks. The power reduction is the main thing I'd like to have.

[mcauser]

The radio can be disabled using sleep modes and deep sleep.
http://docs.micropython.org/en/latest/e ... y/esp.html

Get / set sleep modes. SLEEP_MODEM is the default.
This wraps wifi_set_sleep_type() in the SDK.

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>>> import esp
>>> esp.sleep_type()
2
>>> esp.SLEEP_MODEM
2
>>> esp.sleep_type(esp.SLEEP_NONE)
sleep disable
>>> esp.sleep_type()
0
>>> esp.sleep_type(esp.SLEEP_MODEM)
sleep enabled,type: 2
>>> esp.sleep_type(esp.SLEEP_LIGHT)
sleep enabled,type: 1

Sleep until the reset button is pressed.
These wrap system_deep_sleep_set_option() and system_deep_sleep() in the SDK.

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>>> import esp
>>> esp.deepsleep()

Sleep for 2 seconds (2,000,000us) then wake.
You need to have GPIO16 connected to RST for the board to wake.

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>>> import esp
>>> esp.deepsleep(2000000)

After waking, you can check the reset cause.

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>>> import machine
>>> machine.reset_cause()
5
>>> machine.DEEPSLEEP_RESET
5

Mode info on sleep modes: http://www.espressif.com/sites/default/ ... s_en_0.pdf

[jmwright]

Awesome, thank you. That's very helpful.

[kfricke]

I did recon that the OP wanted to have the CPU be active and only the WiFi be powered down completely.
Browsing the ESP documentation's I have seen that the ESP can be booted this way by juggling with some registers.

[jmwright]

A friend just sent me this link with a very similar discussion.

viewtopic.php?t=1927