by the way, I can build and upload the code to the stm32, but the "nature" problem still there.every time I import an example, the warning pop up. But it seems no effect on my project(?

@STTwo-32 @Pavel A. it works! thanks for the user manual @STTwo-32 provided and @Pavel A. also helps me to get the key point.thank you very much.

@STTwo-32 thanks for your reply.I found the example I'm going to use is not support STM32cubeIDE.maybe the "nature" problem is because of this issue?In addition, could you explain the different between STM32CubeMX and STM32CubeIDE? I can create STM32...

and if i don't solve this problem, it won't allow me to build the project.