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Topic: Wiznet MAC address (Read 2 times) previous topic - next topic

Marian

Jun 13, 2010, 06:42 pm Last Edit: Jun 13, 2010, 06:51 pm by MarianLiliac Reason: 1
Greetings,

I just got a Wiznet 811MJ and on the papers or labels it came with there is no MAC address. Is there any way to get it from the device itself ?

cheers,
Marian

zoomkat

Look at previously developed code for the adapter to see if the mac address is assigned to the adapter in the code itself.
Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   8)

capt.tagon

#2
Jun 13, 2010, 08:19 pm Last Edit: Jun 13, 2010, 08:21 pm by Sean Reason: 1
If the MAC address is hardware assigned, set your device up with a manually assigned IP address, ping that address from another machine and then read the ARP table on the machine you pinged from. Windows at the console window, PING "IPADDRESS" then ARP -A

Looks like you manual assign a MAC address with the Wiznet, see this:

http://arduino.cc/en/Reference/EthernetBegin

Marian

Gentlemen,

thank you very much for your kind answers, but whatever I've tried my Linksys wrt54g with dd-wrt firmware will not recognize my Wiznet.
Is there any way of connecting this small gizmo directly to a computer just to see if indeed is working ?

Thank you,
Marian

westfw

Quote
I just got a Wiznet 811MJ and on the papers or labels it came with there is no MAC address. Is there any way to get it from the device itself ?

No; the device does not HAVE an inherent MAC address; YOU have to assign it one.  The concept that an ethernet interface comes with a built-in MAC address is supposed to be true at the "board" or system level, but the 811MJ is more of a chip-level device.

Quote
my Linksys wrt54g with dd-wrt firmware will not recognize my Wiznet.

What software are you using?  Like I said, the 811MJ is a chip-level module.  It won't do ANYTHING till you connected it up to some sort of real CPU and configure the chip with appropriate commands.

(I guess this is unlike certain other "network modules" (like the lantronix xport products) which really are tiny stand-alone network hosts.  At 2x the price.  You could look at the 107SR, which is a complete ethernet/serial gateway, and cheap.)

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