Omega 2S+ Ethernet Connection Problem
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@akif-durmaz I just followed the reference schema to add ethernet to my PCB based on Omega2S+, I concluded that Onion designers have provided their design so it seems logical that one would follow it. There are lots of wheels, no need to design a new one
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@crispyoz
My new design is not directly related to ethernet problem, we will change some modules on the card but since there is a problem with ethernet port I wanted to get to the bottom of it before the new card
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@akif-durmaz Hi ,For the Omega2S reference schematic ,there are two options for the ethernet connection,option1 is using ethernet transformer ,option2 is a simpler circuit which using resistor and capacitor to instead the transformer . and each of the option can work.
I had checked your ethernet port circuitry screenshot, there are some connection is not right, you can't connect the omega2S's ethernet signal line to the ethernet port.
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The lastest Omega2S reference schematic had deleted the R401~R406，C403 and C404.
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@JeffZhou
Hi. I went with Option 1 and used an ethernet connector with a transformer. The following schematic is from the datasheet of my ethernet connector ;
In reference to the picture I think my T+,T-,R+,R- connections are correct. As a secondary confirmation I have a different PCB containing Omega2+ with the same connections and it's ethernet connection has no problem.
If I misunderstood something please correct me, thank you for your reply.
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@akif-durmaz Hi ,please add a screenshot of the ethernet connector and transformer 's schematic.
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@JeffZhou
there was a product link in my original post but here, these are the only two pages from the datasheet;
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@akif-durmaz
Hi, i had checked the Normal ethernet connector（RJ45），it seems that the inside schematic isn't as the same as yours. Here the connector's sch has the same channel coil of RX/TX.SPEC of HR913550A
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@JeffZhou
Unfortunately I have no idea what those differences mean. However I know for a fact that this connector works as I connected it with another device. So I think my problem lays under something else.
Thank you for your interest and replies.
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@akif-durmaz Hi ，what i mean is you can try to use another ethernet connector.
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I am as yet looking for some appropriate arrangement!
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@Malcon4 Please check out the new Omega2S hardware design guide, there's a section on ethernet design!
https://github.com/OnionIoT/Omega2/blob/master/Documents/Omega2S Hardware Design Guide.pdf
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@Malcon4 here is the ethernet port that Omega2 using .
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Guys when you see a post that does not ask any specific question and/or does not offer any information, it is likely a "SPAM Probe". The user, usually a BOT is responding to a thread that is way out of date and making a boilerplate statement. They are looking for a response and/or checking if their post will get blocked/banned and how long that process will take.
Let's keep the forums free of these guys by ignoring their posts until we have time to ban them.
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@JeffZhou
I couldn't answer due to a covid infection I was dealing with. Thank you for your suggestion, I guess I have no other lead, I will try another connector
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After working on this for a while again, I'm now sure this has nothing to do with hardware. Can anyone point out something do with software that I should watch out for?
I only made the following change in /etc/config/firewall on a brand new device
config zone
option name 'wan'
option output 'ACCEPT'
option forward 'ACCEPT'
option masq '1'
option mtu_fix '1'
list network 'wwan'
list network 'wan'
option input 'ACCEPT'