Keil5 can not compiler nrfx timer driver

[Allen0207]

Hi there, I encounter a problem when making a simple project to toggle a led on nrf52840DK. I use nrfx to drive the hardware layer as follow

An error generated when compile,as follow

I have no idea to fix the problem.Really appreciate for your help!

[Allen0207]

Particularly strange ! It compiles correctly.Maybe something goes wrong in my windows10.

[Simon]

Have you added the source (.c) files to your project. If using Keil, you simply add the files to the project folder in the Project window.

Best regards