[SOLVED] RF switch questions

[Smeedy]

Hi there,

I'm trying to figure out how to work with the external antenna. There's the RF switch which can be triggered with a WiFi(antenna=WLAN.EXT_ANT) but I'm trying to figure out what is happening since I switch back and forth between the Pycom firmware and ESP32 IDF firmware running C/C++.

Looking at the reference design I cannot quite figure out which pin is set to high/low to activate the switch. Looking at a Pighixxx scematic it should be the GPIO16 on the chip.

Could someone shed some light?

Thanks,
Martijn

[Smeedy]

@jmarcelino Yes. Perfect. Thanks for the pointer.

[jmarcelino]

Correct, it is GPIO16

Source: https://github.com/pycom/pycom-micropython-sigfox/blob/dd8a99215d768ce6ba1a0cdbf53ae576dac44338/esp32/main.c#L109