Re: [lwip-users] Windows 7 Startup crashes LwIP and Free RTOS

[FreeRTOS Info]

Hi Guys,

Sorry - just dipping in and out of this thread as it has FreeRTOS in the
title and I want to ensure there are no major issues in anything I'm
distributing.

However, just to repeat something I said a while back, the MAC driver
provided in the FreeRTOS download is a 'demo' quality driver.  It is
intended to allow the features of the kernel to be demonstrated, with
some interrupt interaction, etc.  It is not a full and complete driver
with all the possible error conditions handled.  It has been pointed out
before that certain overrun conditions can cause the driver to hang, and
the error handling under these conditions I think is rather primitive.
Its worth looking at the interrupt cause within the ISR to see why an
interrupt was really generated.

Regards,
Richard.

+ http://www.FreeRTOS.org
Designed for Microcontrollers.  More than 7000 downloads per month.

+ http://www.SafeRTOS.com
Certified by TÜV as meeting the requirements for safety related systems.



On 17/07/2010 14:01, Simon Goldschmidt wrote:
> Well, as long as it is a home only project for fun, I can understand that 
> it's ok like that. However, if that same setup is used in a real product, I 
> would also suggest to go deeper into it. Especially since turning off 
> promiscuous points to a havey-load condition problem which I would expect to 
> be located in the ethernet diver.
> 
> Simon
> 
> 
> Am 15.07.2010 um 23:56 schrieb "Bill Auerbach" <address@hidden>:
> 
>> Marco,
>>
>> Before, it would fail every few days or longer.  Are you at all worried that
>> that now it might still fail every few weeks or months and it will still
>> lock up the device?  You now know how to make the problem occur less often,
>> so you also know how to make it occur more often. Although it's working
>> "quite good" are you accepting the probability that devices will still lock
>> up, and this is OK?
>>
>> Bill
>>
>>> -----Original Message-----
>>> From: address@hidden
>>> [mailto:address@hidden On
>>> Behalf Of Marco Jakobs
>>> Sent: Thursday, July 15, 2010 3:10 PM
>>> To: address@hidden
>>> Subject: Re: [lwip-users] Windows 7 Startup crashes LwIP and Free RTOS
>>>
>>> Dear all,
>>>
>>> to finalize this with a status: After changing the EMAC initialization
>>> to non-promiscuous mode (MAC filtering enabled at EMAC level, broadcasts
>>> enabled), the problem did not occur on all devices for a week now. Seems
>>> to be solved (or better: avoided) with this setting.
>>>
>>> Actually i can't get behind what was causing it. Maybe the EMAC task,
>>> which had highest priority together with my watchdog task. The RTOS
>>> stats are showing enough free memory while it's running, but maybe
>>> something causes the 512 bytes not reaching anymore. As i want to
>>> continue my home project and it's working now quite good, i actually
>>> won't put more work in investigation of this.
>>>
>>> Thank you all for your great suggestions!
>>>
>>> Marco
>>
>>
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