<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<div class="moz-cite-prefix">On 8/6/2021 8:46 AM, Jean-Pierre
Desrochers wrote:<br>
</div>
<blockquote type="cite"
cite="mid:000601d78ada$49b21470$dd163d50$@oricom.ca">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="Generator" content="Microsoft Word 14 (filtered
medium)">
<style>@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Texte brut Car";
margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}span.TextebrutCar
{mso-style-name:"Texte brut Car";
mso-style-priority:99;
mso-style-link:"Texte brut";
font-family:"Calibri","sans-serif";}.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}div.WordSection1
{page:WordSection1;}</style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoPlainText"><span lang="EN-CA">I’m doing some tests
on a rotary encoder and a PIC16F1783.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-CA">A standard Bourns
encoder like <a
href="https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjyoqDF3JzyAhUmhOAKHf3lAzoQFnoECAoQAw&url=https%3A%2F%2Fwww.bourns.com%2FPDFs%2Fpec11l.pdf&usg=AOvVaw2RyieyzPnujiOTS7LBcbpw"
moz-do-not-send="true">THIS</a> .<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-CA">Connected using 2 x
10k pullups with 0.01uf caps to ground<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-CA">to PORTB of the
micro. Interrupt calls (falling edges) used on encoder pins
A & B.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-CA">I struggled so far to
get clean increments/decrements out of it.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-CA">Many missing counts
occur..<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-CA">I tried many source
codes on the web with no luck..<o:p></o:p></span></p>
</div>
</blockquote>
<p>If you're missing counts, it could be due to:</p>
<p>1. Insufficient MCU compute capacity<br>
</p>
<p>2. Inefficient or buggy interrupt handler</p>
<p>3. Excessive switch bounce</p>
<p>JJS<br>
</p>
</body>
</html>