I am used to work with the STM32CubeIDE, programming in C language and using the FreeRTOS. In this configuration I am using a STM32 as a host controller interfacing with the RAK3172 via AT commands.
Now I would like to run some application into the RAK3172 using the RUI3 APIs.
Is there a way to do that, with the RUI3 APIs, using C language and not the Arduino environment? The Arduino programming looks too simplified, and I am not sure about the hardware configuration details behind this simplification.