[En-Nut-Discussion] ENJ28J60

[Jesper Hansen]

Sorry about the long delay, but I was busy with other stuff.

I've now uploaded the ENC28J60 test code to the Sample_Code repository 
at http://www.avrrepository.com

It's intended to run on a mega128. Code size is about 22kB.
Project is for AVRStudio/WinAVR

/Jesper

Bengt Florin wrote:
> Tack Jesper that would be most helpful.
> Even messy code tends to be more readable than the data sheets.
> Besides endless reading of the specs doesn't even get close to the
> experience dug deep in working code.
> 
> I also took a look at Pascal Stangs library, very impressive. First time I
> heard of that. More thanks for that tip.
> 
> /bengt
> 
> -----Original Message-----
> From: en-nut-discussion-bounces at egnite.de
> [mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Jesper Hansen
> Sent: den 24 maj 2006 19:57
> To: Ethernut User Chat (English)
> Subject: Re: [En-Nut-Discussion] ENJ28J60
> 
> I used a modified version of Pascal Stangs driver, together with the UIP 
> stack (dare I say that here? ;-)
> I wanted to redo the driver for use with NutOS but haven't had the time 
> yet. It shouldn't be too much work though.
> 
> The code is a big mess as it's a patchwork of many various projects. 
> I'll try clean it up a bit and post a link to it here.
> 
> /Jesper
> 
> Bengt Florin wrote:
>> Well Jesper, that's good news.
>> I did put our little ENC28J60 project on ice after reading the errata.
>> Then it might be time to wake it up again.
>>
>> BTW. did you write the drivers by yourself?
>> If yes, do you want to share?
>> If no, what did you start out with? Drivers from Microchip?
>>
>> /bengt
>>
>> -----Original Message-----
>> From: en-nut-discussion-bounces at egnite.de
>> [mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Jesper Hansen
>> Sent: den 24 maj 2006 19:27
>> To: Ethernut User Chat (English)
>> Subject: Re: [En-Nut-Discussion] ENJ28J60
>>
>> I've had a ENC28J60 running for months on a web-server with a mega128 
>> clocked at 7.2728 MHz, and have had no problems at all with it.
>> I've two other boards with ENC28J60's on and haven't notices any 
>> problems with those either. None of these are even close to 8 MHz SPI 
>> frequency !
>> Also note that the 2k bias resistor that was recommended on the early 
>> devices should now be 2.7k. This lowers current consumption 
>> considerably, I'm not sure how much though, haven't measured.
>>
>> /Jesper
>>
>> Bengt Florin wrote:
>>> Also the current status of the ENC28J60 (Rev B4) silicon makes it
>>> practically unusable for most CPU's, as the SPI interface doesn't work
>>> properly for clock rates under 8MHz.
>>>
>>> Silicon Rev B5 is said to correct this, but Microchip has yet not
>> announced
>>> when this will be available.
>>>
>>> Also, I agree to Haralds comment. Power consumption is way too high.
>>>
>>> Another interesting CPU to port Nut to would be the Freescale Coldfire
>>> MCF52235, a true single chip solution as it also contains an Ethernet
> PHY.
>>> I remember reading some comments from Erik Lins to port Nut to Coldfire
>>> MCF5282.
>>> Well yes, it was back in 2004. Time flies.
>>>
>>> Any interest of, or progress in the Coldfire direction?
>>>
>>> /bengt
>>>
>>> -----Original Message-----
>>> From: en-nut-discussion-bounces at egnite.de
>>> [mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Harald Kipp
>>> Sent: den 22 maj 2006 09:39
>>> To: Ethernut User Chat (English)
>>> Subject: Re: [En-Nut-Discussion] ENJ28J60
>>>
>>> Hello Richard,
>>>
>>> At 17:43 21.05.2006 -0400, you wrote:
>>>> MIcrochip ENC28J60 Has anyone been able to use this IC with Ethernut?
>> Been 
>>>> considering making a Ethernut board and using this, but I am terrible at
> 
>>>> writing drivers... I see code to operate the IC in the AVRlib,
>>> After Erik Lins pointed me to the electrical characteristics,
>>> namely the operating current, I lost my interest in this chip.
>>>
>>>> also any drivers for the newer MP3 IC's from VLSI 1002 or 1003?
>>>>
>>> Due to missing hardware (Medianut still uses the old VS1001K),
>>> we never worked on an update. I agree that this is very sad.
>>>
>>> Harald
>>>
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