RF Switch - PA4 and PA5 or RFIO

[jaspss]

https://wiki.seeedstudio.com/Grove_LoRa_E5_New_Version/

Note 3. RF Switch

Wio-E5 module ONLY transmits through RFO_HP:

Receive: PA4=1, PA5=0
Transmit(high output power, SMPS mode): PA4=0, PA5=1

I wonder where these pins are, I don't know what the pin interpretation is, because PA4 and PA5 don't see them anywhere.

What is RFIO? Is the RF Switch?

Best regards

[nfs0619]

Hello, PA4/PA5 are hardware control pins for the RF switch, but in the Wio-E5 module, this low-level operation is fully encapsulated by the firmware and development libraries. You don’t need to manipulate these pins directly—just use AT commands or library functions to control LoRa communication. This hardware abstraction design simplifies the development process, allowing you to focus on application logic without worrying about the underlying RF switching details.