Recent posts to MCP2317 library testhttps://forge.codesys.com/forge/talk/Engineering/thread/408b611208/2020-02-27T14:31:53.212000ZRecent posts to MCP2317 library testMCP2317 library test2020-02-27T14:31:53.212000Z2020-02-27T14:31:53.212000Zlucaver89https://forge.codesys.com/u/lucaver89/https://forge.codesys.com884f6cddfaa1bb63b222432f0a2936f3078ca3e7<div class="markdown_content"><p>hi to all,</p>
<p>I would like to use the MCP23017 16IO port exander in i2c version of Microchip. I sow that there are a lot of post here, infact the library from <a class="" href="http://forum.codesys.com/viewtopic.php?f=23&t=5872&x=10868&p=11014&lan=en" rel="nofollow">http://forum.codesys.com/viewtopic.php?f=23&t=5872&p=10868#p11014</a> has been download and implemented successfully. <br/>
The hardware has not been tested yet, but I just took a look inside the library. It's very simple but I would like ask you something:</p>
<p><span>[*]</span> Is the super calling the father constructor?<br/>
<span>[*]</span> What is _iState? Is defined in the i2c main library?<br/>
<span>[*]</span> Why the uriAddress is 16#20? looking the dataseet should be 16#40. Is my osservation right?</p>
<p>Thanks<br/>
Luca</p></div>