topic Re: QEI issues lpc1788 in LPCXpresso IDE https://community.nxp.com/t5/LPCXpresso-IDE/QEI-issues-lpc1788/m-p/588817#M28322 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by xianghuiwang on Wed Nov 21 16:24:00 MST 2012</STRONG><BR /><SPAN>Hi, there,</SPAN><BR /><SPAN> </SPAN><BR /><SPAN>FILTERPHA and FILTERPHB are used to increase QEI accuracy. Please check your signal quality.</SPAN><BR /><SPAN>Thanks</SPAN></BODY></HTML> Wed, 15 Jun 2016 22:49:09 GMT lpcware 2016-06-15T22:49:09Z QEI issues lpc1788 https://community.nxp.com/t5/LPCXpresso-IDE/QEI-issues-lpc1788/m-p/588816#M28321 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by badri89 on Wed Nov 21 00:10:07 MST 2012</STRONG><BR /><SPAN>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&nbsp; FILTER B I m getting erratic counts. Is it mandatory to use these registers?</SPAN></BODY></HTML> Wed, 15 Jun 2016 22:49:08 GMT https://community.nxp.com/t5/LPCXpresso-IDE/QEI-issues-lpc1788/m-p/588816#M28321 lpcware 2016-06-15T22:49:08Z Re: QEI issues lpc1788 https://community.nxp.com/t5/LPCXpresso-IDE/QEI-issues-lpc1788/m-p/588817#M28322 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by xianghuiwang on Wed Nov 21 16:24:00 MST 2012</STRONG><BR /><SPAN>Hi, there,</SPAN><BR /><SPAN> </SPAN><BR /><SPAN>FILTERPHA and FILTERPHB are used to increase QEI accuracy. Please check your signal quality.</SPAN><BR /><SPAN>Thanks</SPAN></BODY></HTML> Wed, 15 Jun 2016 22:49:09 GMT https://community.nxp.com/t5/LPCXpresso-IDE/QEI-issues-lpc1788/m-p/588817#M28322 lpcware 2016-06-15T22:49:09Z