How to view register values in interrupt service routine(s)

[diode]

I want to see register values in interrupt service routines after a timer timeout. However, when I enable debugger in Keil, it only iterates once to the end of main function, and stops. How can I get into the interrupt service routine and view the register content?

[John]

You could set a breakpoint in the interrupt service routine you are interested and just let the application run after you start the debug session. Then it will stop when the ISR is entered.