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interrupt problem by using the TI-RTOS on F28069

I have two interrupt source. [one is adc interrupt(running 15KHz), another is timer interrupt(running 1KHz)]

It can work independent, but not work simultaneously after about 10 minutes......

 

Below is my code process:

  Hwi                             Semaphore                   Task

1.adc_ISR     ----->       ADCSem        ----->        adc

2.Timer_ISR  ----->       TimerSem      ----->       Timer

My adc task priority higher than timer task priority.

 

Have anyone encountered similar problems???

Please help. Thanks a lot.

When interrupts do not work, I press the suspend bottom.

It always in the abort() function......... 

Below picture is my debug window:

  

Below picture is my RTOS .cfg setting: