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SYSBIOS GPIO HWI and Task context switch issue

Gurumurthy Kola
Prodigy 10 points
Other Parts Discussed in Thread: TMS320F28335

I am facing a strange issue, Application tasks are not getting control, If HWI triggering rate more than 15us.

Platform details,

Microcontroller : TMS320F28335.

RTOS : SYS BIOS

IDE: CCS Ver 5.5.0.00077

Scenario,

Two HWI, triggered by external GPIO interrupt. Frequency is 128KHz.

Two tasks, waiting for an event from respective HWIs.

Issue observed,

HWI are triggered and posting event at every 1024 counts, But the respective task is not getting event and the tasks state always showing blocked.

If the frequency of the signal given to GPIOs is reduced to 64KHz, the applicaiton is working fine.  The applications tasks are getting events.

Please let me know any suggessions how to overcome this issue.

Thanks in advance.

Best Regards,

Gurumurthy