Hello,

I did a little search and didn't find any headers of iOS AdMob for FPC. It's Objective-C interface.

Thus, I converted them myself:
https://github.com/skalogryz/admob-pascal

Note, the conversion is incomplete, I stopped after converting Interstitial Ad (which I needed).
If you need some other API of the framework, let me know and I can finish the conversion for you.

thanks,
Dmitry