Hi @gloom35 Here are on youtube some video that teach how to use and get what you want
https://www.youtube.com/watch?v=eljscsrJQtU
https://www.youtube.com/watch?v=YXVEGyJDDa8
And on the next tread explain with a detail how to do it
https://community.arm.com/support-forums/f/keil-forum/49757/header-file-mkl25z4-h-not-found-for-frdm...
- quickly have generated a corresponding project for a FRDM-KL25Z128xxx4.
Building this project results in 0 errors and 0 warnings.
Software Packs in use -> see attached screenshot
CarlosGarabito_0-1671026349996.jpeg
Also, the Pack Installer offers a helpful CMSIS-RTOS example project for the KLxx series.
CarlosGarabito_1-1671026349996.jpeg
And the lab from keil https://www.keil.com/appnotes/files/apnt_232.pdf
Have a good day
Best Regards