TMS320F28377D: Runtime CMPSS sampling window and threshold adjustment

Fei Pan

Hi,

I followed the instructions from technical reference manual to initialize the CMPSS module for F28377D. And it works well.

Right now, I would like to adjust the sampling window and threshold during run time. Can I just do the following two lines for CTRIPHFILCTL at runtime? Do I need to STOP CMPSS before and ENABLE it after? I hope that is not needed.

CmpssRegs.CTRIPHFILCTL.bit.SAMPWIN = MY_SAMPWIN;
CmpssRegs.CTRIPHFILCTL.bit.THRESH  = MY_THRESH;

Thanks

Fei

over 4 years ago

0 Santosh Jha over 4 years ago

TI__Guru 50611 points

Hi,

I am checking with expert and get back to you later today.

0 Santosh Jha over 4 years ago in reply to Santosh Jha

TI__Guru 50611 points

Hi,

As we don’t know the current state of the filter when the change was made, it is recommended to follow the filter initialization sequence that has been outlined in the TRM when you change filter settings.

TRM section 13.5.1 Filter Initialization Sequence : https://www.ti.com/lit/ug/spruhm8h/spruhm8h.pdf

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TMS320F28377D: Runtime CMPSS sampling window and threshold adjustment