Please tell me how to combine projects.
I made several projects using the default project.
procedure
1. Copy one of project A and project B.
2. The source code, which is not a copy target, has been inserted into the project tree.
non-cloned project
Copied project (insert C and H files)
Set User Include Directories as above
add header file
Questions
1. I have a subdirectory created in main.c , how do I create this?

2. An error is output even if NRF_SDH_LOG_ENABLED is set.
//========================================================== // <e> NRF_SDH_BLE_ENABLED - nrf_sdh_ble - SoftDevice BLE event handler //========================================================== #ifndef NRF_SDH_BLE_ENABLED #define NRF_SDH_BLE_ENABLED 1 #endif // <h> BLE Stack configuration - Stack configuration parameters

Please tell me how to combine other sources or how to solve the above problem.