TMS320F28P650DH: Change OSR dynamically

Part Number: TMS320F28P650DH

Tool/software:

Hi,

is it possible to change the OSR dynamically without resetting the SDFM module ?

Thanks

Geoffrey 

  • Hi Geoffrey,

    I can't find anything in our documentation directly confirming if on-the-fly changes to OSR are possible, but I cannot find anything explicitly stating that it isn't supported either. Have you tried any experiments with this?

    Best Regards.

    Zackary Fleenor

  • Hi,

    I've done the test on F28P65 launchpad with nothing connected to the SD_data input. In the fifo ISR, I reconfigure the OSR with SDFM_setFilterOverSamplingRatio every 10 samples. This is what I get into memory after test:

    After OSR change I get transitions values like after a reset.

    Could you confirm that I use the right way to do, and so that dynamic OSR changes is not supported

    Thanks