AnsweredAssumed Answered

MPC5746R DECFILTER howto?

Question asked by James Murray on Oct 30, 2018
Latest reply on Nov 5, 2018 by James Murray

I've been struggling with the decimation filter on the MPC5746R.

 

I have been using the Reference Manual, AN4209 and the MPC5676R example posted a few days ago by David Tosenovjan

 

Is there any working example code for a standalone application ? (i.e. polled, not interrupt or DMA.)

Are there any more training materials?

 

What I got particularly stuck on is the behaviour of the status register and bits IDF, IBIF, ODF, OBIF. I'm still unclear from the RM which ones I should be checking. I _was_ trying to use IBIF and OBIF but they are rarely set. Now I check and clear both pairs and FINALLY got some data to go in and out of the filter. What is correct usage of these bits?

 

James

Outcomes