Re: [lwip-users] AVR32 uc3a macb driver serious problem

[Sylvain Rochet]

Hi Darius,

On Wed, Oct 21, 2015 at 11:22:30AM +0300, Darius Babrauskas wrote:
> 
> (...)
> 
> – there is a transmit error such as too many retries or a transmit 
> under run.
> 
> (...)

I have two patches against the AVR32 MACB driver in my tree, and it 
look like it might fix your issues.

- macb-nonblocking-asf-3.5.1-0000.patch

The MACB driver does not set the correct speed/duplex from MAC to PHY in 
case of speed/duplex link change (i.e. if the remote device is replaced 
or if a damaged cable make a negotiation restart and set the speed from 
100 to 10). Here is my patch against ASF 3.5.1 which fixes this issue as 
well as being non blocking if ETHERNET_CONF_USE_PHY_IT is set, otherwise 
it behaves the same as before. It is working with or without FreeRTOS.

It was discussed on the avrfreaks forum[1].


- 0001-fixed-crash-if-MACB-failed-to-sent-a-frame-a-failed-.patch

Fix a crash if MACB failed to sent a frame, a failed frame does not set 
the USED/OK bit, so the current implementation locked the circular 
buffer


Hope it helps ! :)

Sylvain


[1] http://www.avrfreaks.net/forum/non-blocking-asf-macb-driver

0001-fixed-crash-if-MACB-failed-to-sent-a-frame-a-failed-.patch
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macb-nonblocking-asf-3.5.1-0000.patch
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