Adding TCP/IP Ethernet to PIC - how?


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  1. #10
    Join Date
    Dec 2005
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    @gtvmarty,

    Maybe you are asking too much.

    Back near the beginning of the thread, I recommended ConnectOne's nano LANReach. As far as interfacing with it via serial, it is identical to the ConnectOne wireless module mackrackit used. And, while they don't offer any PIC code, the ConnectOne documentation is excellent. Anyone with a modicum of experience should be able to create something similar to mackrackit's code (not to disparage his skills).

    I also recommended the WIZ110SR which is equally simple to work with. Their documentation should be more than adequate although, again, there are no PIC code examples. It will, however, require you to make the TCP or UDP connections in your PIC code but there was a recent example of SNTP (using a different adapter) on this forum from Charles Linquis.

    None of the manufacturers of simple ethernet/serial adapters are likely to offer any microcontroller example code - it would take too much time and effort (and handholding) to provide examples for even the 4-5 most popular microcontrollers.

    I spent most of the past 10 months hospitalized and/or recovering from major surgery so I haven't been active on the forum. In my absence there have been some developments.

    Tibbo has finally released a replacement for their discontinued modules. Their USA distributor has been stocking it for a few months now. The EM500 is programmable in Tibbo's Basic dialect and they have several examples for SMTP (email), SNTP (time), HTTP (web server) on Tibbo's web site. You can also purchase direct from Tibbo for under $40. One caveat - It has 22 pins in a 2x11x0.050inch spacing and it needs an RJ45+magnetics (available from Tibbo and dealers) so you cannot breadboard it. Also, it's a 3.3V device but all the pins you need are 5V tolerant. You will need pull-ups on outputs if using a 5V PIC. Their online documentation is complete but requires a lot of hipping and hopping - old geezers like me prefer more linear arrangements. They do have an $85 evaluation board which includes everything you need and also illustrates an ingenious method of designing a PCB that allows plugging in the EM500 instead of soldering the closely spaced pins. It has a lot of flash memory available (320KB IIRC) for user programs. On the PIC end, code would be quite similar (but simpler) to mackrackit's example.

    Also, Mouser still has a "may need an export license" disclaimer on all of the ConnectOne devices. I don't know whether that means they won't ship overseas or whether it means they are selective about where they will ship.
    Last edited by dhouston; - 11th November 2010 at 13:35. Reason: corrected spelling of mackrackit :-(

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