[En-Nut-Discussion] olimex sam7-ex256 & ethernut

[Dave Warren]

Lars,

I use a National DP83848 PHY on my print, I connect the PHY reset to a PIO 
pin. I found that setting the pull ups and resetting was not needed. I was 
having some problems, when I didn't reset it worked much more stable. The 
power up defaults were on the PHY were fine. Maybe you could try.

----- Original Message ----- 
From: "addisu" <addisu at ciholas.com>
To: <en-nut-discussion at egnite.de>
Sent: Tuesday, August 21, 2007 10:14 PM
Subject: Re: [En-Nut-Discussion] olimex sam7-ex256 & ethernut


>
> Hello,
>
> This was very helpful.  I got my micrel PHY working on a sam7x 256.
> However, it only lasted two days and it started working only 50% of the
> time, and now it doesn't work at all.  The problems seems like the PHY is
> not getting configured according to the strap-in pins that I set up.  Any
> clues?
>
> Thanks,
> Addisu
>
>
> Dave Warren wrote:
>>
>> Lars,
>>
>> Look at the source at91_emac.c, you find it in libnutarch, the function
>> emacreset() sets up PHY. You will have to change the ID values they are
>> hardwired for the Davicom. PHY. Modes are changed by turning off pull ups
>> on
>> IO pins then pulsing reset line. Check the reset for your print sometimes
>> it
>> is attached to a PIO pin rather than system reset as it is on EK board.
>> Also
>> some PHYs are reset with a active high signal. The PHY should be set for
>> MII
>> mode.
>>
>> Good luck
>>
>> Dave Warren
>>
>> ----- Original Message ----- 
>> From: "Lars Ulph" <lars at mantracourt.co.uk>
>> To: <en-nut-discussion at egnite.de>
>> Sent: Tuesday, March 27, 2007 3:24 PM
>> Subject: [En-Nut-Discussion] olimex sam7-ex256 & ethernut
>>
>>
>>>> Hello All,
>>>>
>>>> I am trying to get Ethernut 4.2.1 working on my Olimex Sam7-ex256 (not
>>>> EK) board. Has anyone managed to make this work? Has anyone managed to
>>>> make the webserver work? if so please please tell me how.
>>>>
>>>> I believe it uses a Micrel PHY instead of the Davicon one on the Atmel
>>>> version.
>>>>
>>>> What changed do i need to make to make the phy talk to me? I have
>>>> flashed
>>>> the board many times but i don't know whether it is alive.
>>>>
>>>> Also how do you change the IP address of the board?
>>>>
>>>> any help would be appreciated.
>>>>
>>>> Regards,
>>>>
>>>> Lars Ulph
>>>>
>>>> Mr. Lars Tapani Ulph
>>>> BEng Electronic Eng. & Management
>>>> lars at mantracourt.co.uk
>>>>
>>>
>>>
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