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power manager in 5510

aziz shammas
Intellectual 805 points

hi

I'm trying to use the automatic power management in 5510. i followed the instructions of an old lab training instructions about 5510 from TI, where they mentioned the following steps:

1- add a power down function:

void powerDown(void)

{

PWR_powerDown(PWR_WAKEUP_MI);

}

2- turn on power configuration manager, and only check the CPU check box

3- create IDLE thread that calls the create function above.

when i did those steps all what comes out is a sound like a fast Woodpecker. my original project just takes audio in and gets it out using McBSP-DMA, by HWI and SWI.

when i uncheck the CPU in the power configuration, it gives normal results (sound), even if all the other check boxes are checked...

any suggestions?

  • 0
    TI__Genius 12575 points

    Hi,

       Could you pl let me know, what did you mean by “automatic power management in 5510” ? Additional details on your requirements will help. 

     Regards

     Vasanth

  • 0 in reply to Vasantha K
    Intellectual 805 points

    Hi Vasanth

    automatic Power Management (APM) is a feature designed into every C55x and operates in the background to help in power reduction, but that is not what i meant...

    i think i used the wrong words here, what i meant that i used BIOS GUI to automatically IDLE the domains i select in the power configuration, without manually controlling  the registers, via the three steps i mentioned earlier.

    sorry for the confusing use of words

    best regards

    aziz