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Author Topic: No TCP/IP link,without pressing the reset button  (Read 16664 times)
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Lancashire, UK
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The 100nF capacitor between GND and reset works for me, setting the gateway and subnet doesn't......
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I've always had a gateway and subnet set during my tests. Therefore I hardly believe that SaSaa's solution solved the reset problems in each case.
« Last Edit: April 16, 2010, 10:49:08 am by burni83 » Logged

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@burni
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1. don't connect the reset pin of ethernet shield to the arduino (bend it a little bit away)
2. connect the reset pin of ethernet shield to a digital pin of the arduino
....

thanks, your solution works very well.
I use your code also to reset Ethernet shield if it hangs (quite often).

As far as you know, that's a problem related to Wiznet 5100 chipset?
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HI all,
have you seen this:
http://arduino.cc/blog/?p=659

New Ethernet Shield:
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We're very happy to announce an updated version of the Arduino Ethernet shield, with some nice new features. This revision incorporates a micro-SD card slot so you can store files to send over the network. It's compatible with the Arduino Mega (using the SPI pins on the ICSP header). It adds a reset controller which should address the problems some people have had getting it to work directly on power-up. All-in-all, we think it's a well-rounded upgrade to a useful product.

It seems that the reset issue is addressed - even if i've not tried this new shield yet.
Any feedback?

Regards
M
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In my tests, the reset controller on the revised shields seems to fix these problems.  Please let me know if it works for you.
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I am new to the Arduino and can report I have not had any reset issues using the Rev5 EtherShield on a Arduino Mega. It has been plug and play hardware. I am having some connection refused with the library code with connect which brought me to this thread. It's intermittent failure at 1 per 300 or so connections and it fails with connection refused 6100 error code.
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I've created my own ethernet shield board using the WIZNET W5100 and reference designs.  Everything works great, however, I just plugged the shield into a Gigbit switch and it fails to start.  When I plug it back into a 10/100 it works fine.  Any ideas?  It should just operate at 10/100, or is the gig-switch having issues?


« Last Edit: November 08, 2010, 12:22:07 pm by Mavromatis » Logged

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