RTOS/TMS320C5517: Function registered in Periodic Function Manager(PRD) is not getting called ??

Vijeth P O

Prodigy 80 points

Part Number: TMS320C5517

Tool/software: TI-RTOS

Hi All,

I am using TMS320C5517 board for external codec integration purpose.

As a requirement I need to send the data to I2S port at fixed rate in periodic manner.

So I am trying to use PRD periodic function manager by editing .tcf file. I was able to add periodic function provide ticks = 3 (3 * 1000uS), function definition in source code and was able to compile successfully.

But when I am executing, I don't find this function getting called at all !!!

I have added prints inside it to confirm it.

Any help to solve this issue would be really appreciated.

Thanks in advance.

over 7 years ago

0 Vijeth P O over 7 years ago

Prodigy 80 points

Hi All,

Below solution worked for me.
I used timer1 instead of timer0 and removed my extra added printf and kept only default LOG_printf and now it seems to be working.

So below were 2 issues
1)For some reason timer0 is not working and hence used timer1.
2)Removed printfs, it seems we cannot add printf inside PRD functions.

0 Cvetolin Shulev-XID over 7 years ago in reply to Vijeth P O

TI__Guru 65405 points

Thank you for sharing the solution.
printf function consuming time and it is not recommended to be used in time critical functions.

BR
Tsvetolin Shulev

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RTOS/TMS320C5517: Function registered in Periodic Function Manager(PRD) is not getting called ??