<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Apr 7, 2015, at 8:42 AM, Hugo Caldas <<a href="mailto:hcaldas92@gmail.com" class="">hcaldas92@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><span class="Apple-converted-space"> </span>read and write the port values with multi threading<span class="Apple-converted-space"> </span></span></div></blockquote><br class=""></div><div>Care to elaborate what you mean by this part? In general, serial ports and multi threading don’t mix well. IOW, you’ll need to use multithreading pieces to make sure you serialize your access to your serial port.</div><br class=""><div class="">As other have pointed out, pyserial is the package you want. Documentation is pretty good. We use it a lot. </div></body></html>