Shared C code from both Swift and Kotlin?

[dpyeates]

I have created a nitro module using create-react-native-library@latest

I have a added a bunch of c and c header files to the project, and have them included and present in the Xcode and Android projects.

I would like to be able to call the C functions from swift and the same from Kotlin.

i.e. I want to do some platform specific stuff using Swift and Kotlin around the sensors, and then pass the sensor data to a shared model written in C for both iOS and Android.

I have tried everything but I am unable to get it to work. Does anyone have any words of wisdom or basic examples they could share to maybe see what I am missing?