<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Core s3 SE with LAN and COMMU modules]]></title><description><![CDATA[<p dir="auto">Hello,</p>
<p dir="auto">I am using ESPhome and will be configuring this via yaml as all of these chipsets are defined in yaml and are supported in ESPhome.</p>
<p dir="auto">I am seeking advice on pin maps for using the Core s3 SE (SKU K128-se) with the COMMU module (SKU M011), followed by the LAN module (SKU M136). I am seeking to add 3 i2c hubs (SKU U040-B) that connect directly to the 1 port on the core s3 se and 2 ports on the COMMU module. I will be connecting a device to the rs485. I will not be using wifi, this will strictly be LAN by ethernet. I see that my pin map needs to be:<br />
MOSI– G37<br />
MISO– G35<br />
SCK– G36<br />
I2c core s3 SE Port- G2 and G1<br />
rs485 comm port- G18 and G17</p>
<p dir="auto">But I have questions on:<br />
CS- The core s3 SE says that this is for G3 (which I don't see a label for), do I need to assign this and if so is assigning it to G3 in this setup ok?<br />
RST- All three modules have this in the same pin but I don't know what number that is on the core s3 SE because it is only labeled as RST, do I need to define this or is this defined by default?<br />
INT- The module says that it uses the G10 or G14, both of these ports are labeled for something, how do I decide which one to use?<br />
i2c comm Port– G12 + G11, these share the same bus as the internal i2c for the core s3 SE. So I am assuming that this is fine to use. However my question is if I have 2 of the same type of peripheral (the PA.HUB i2c hub, SKU U040-B) will this work on these two ports if I change the address on the hubs connected to these 2 ports?</p>
<p dir="auto">Thank you!</p>
]]></description><link>https://community.m5stack.com/topic/7362/core-s3-se-with-lan-and-commu-modules</link><generator>RSS for Node</generator><lastBuildDate>Wed, 11 Mar 2026 00:43:39 GMT</lastBuildDate><atom:link href="https://community.m5stack.com/topic/7362.rss" rel="self" type="application/rss+xml"/><pubDate>Thu, 06 Mar 2025 01:05:24 GMT</pubDate><ttl>60</ttl></channel></rss>