Turn off wifi and bt?

[zliudr]

I suspect that my prototype board has some interference issue so I would like to turn off wifi and bt. Is there any esp-idf calls that can do that? Thanks.

[Aussie Susan]

It might be my ignorance or my misunderstanding your question, but I thought you had to turn on both BT and WiFi.
Therefore neither should be working if you have not called the functions to turn them on.
Susan

[zliudr]

I am not sure. So I am as ignorant as the next person with this question. I suspect that the hardware might be on by default but it would be great to hear from someone who has a clear answer.

[ESP_Angus]

Not on by default, so not using it should be equivalent to enabling and then disabling.

If you need to disable after calling esp_wifi_init() then you can call esp_wifi_deinit():
https://docs.espressif.com/projects/esp ... fi_deinitv

You can also de-initialize the BT controller:
https://docs.espressif.com/projects/esp ... er_deinitv

But these APIs should only be called after the corresponding APIs to enable wifi/BT have been called.

[zliudr]

Thanks ESP_Angus. It's good to know that. I think my misunderstanding stems from my earlier exposure with ESP8266-Arduino. It always auto-reconnects to the last AP when restarted that must mean that "ESP8266 starts with WiFi turned on". It might have been a feature in ESP8266-Arduino to make it easy to use?! Once I got my first ESP32, it was MicroPython time! Now it's ESP-IDF time, down to the layer that everything else has been built on. If only I had time to read all the 2,000 pages of documents, I'd be better of already