LPC1517 SystemCoreClock becomes ZERO

[athmesh_n]

While running the program, the SystemCoreClock became zero for no reason.

I was working on timer, and the timer interrupt suddenly stopped. When I debugged and checked the peripherals of SCTimer, the match value came to 0xffff, when I rewinded back, SystemCoreClock showed zero instead of 71999999.

Is it any hardware issue or any hardfaults or any other faults?

[athmesh_n · Accepted solution]

I solved the problem, the SystemCoreClock must be globally initialized if its call is in another function, or use GetSystemCoreClock() function.