RTOS/CC2530: Sometimes watchdog is activated even if the timer is cleared in 1ms interrupt.

Part Number:CC2530

Tool/software: TI-RTOS

Hi,

We want to use watchdog with 1 second interval. But even if we clear timer in 1ms Interrupt, sometimes the watchdog also can be activated. It looks some hardware interrupt is very busy, and no time for this interrupt. Why? We use the stack Z-Stack Lighting 1.0.2.