CC1352R: How to implement switch antenna callback function

Hello,

please could you advice to me how to implement function rfDriverCallbackAntennaSwitching ?

I have SKY13370 for dualband antenna. It is controled with input F1 and F2. This inputs are connected to DIO8 and DIO9 on CC1352R1.

When DIO8 is HIGH then it is 1G and when DIO9 is HIGH then it is 2.4G. 

It works fine in single mode 1G or 2.4G. But I would like to use DMM.

Thank you