QEI issues lpc1788

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by badri89 on Wed Nov 21 00:10:07 MST 2012
Hi all I am using QEI of 1788 with my panasonic ac drive. I have configured my drive for positive and negative pulse train and I am using QEI interface for counting my pulses. But if I dont give any value to the register FILTERA and FILTERB I'm not getting the accurate values. While If I give any value to the registers I'm getting the exact amount of counts irrespective of the counts specified. I am trying to give forward and reverse for specified amount of counts and without FILTER A and  FILTER B I m getting erratic counts. Is it mandatory to use these registers?