Low priority task making high priority task to halt

ti_user

Hi,

I'm using SYS/BIOS v6.33.6.50 on TI DSP C6674.

I had an application with 3 tasks, task 1 - Ethernet Ping (Priority : 15), task 2 - Simple UART application (Priority : 5), task 3 - an application processing (Priority : 4).

My task 3 is added recently, before that only two task (1,2) present and Ethernet PING is successfully received.

After adding task 3 which is responsible to process the data continuously so added it in while loop, With this while loop it is observed that Ethernet ping response is not coming.

If i disable task 3, then everything goes right with Ethernet PING.

I want your inputs on how to run a low priority task with continuous loop, without effecting high priority task behavior.

Awaiting for your inputs.

Thanks

Mani Kumar

over 10 years ago

0 Tom Kopriva over 10 years ago

TI__Mastermind 20480 points

Mani,

are you using the NDK by any chance? If so, which version.

By definition, if a higher priorty task is ready to run, it will run. Task 1 is blocked on something, so perhaps you can use ROV to see what it is. Also, do you have interrupts disabled for a long time in task3?

0 ti_user over 10 years ago in reply to Tom Kopriva

Expert 1265 points

Hi Tom,

Yes, I'm using the NDK v2.21.1.38

True, that higher priority task will run.

Task 1 is not blocked in code and there are no interrupts using in task 3.

Any other suggestions ?

Thanks

Mani Kumar

Processors

Processors forum

Low priority task making high priority task to halt