[lwip-users] Re: [lwip] Driver for the CS8900a chip, for uIP stack

[JORGE ALEJANDRO JARAMILLO ESPINAL]

> Hello all,
> 
> ----- Original Message -----
> From: "Marcelo Barros de Almeida" <address@hidden>
> > Hi Jorge,
> >
> > > I need a driver for the CS8900A chip for my project, I will be very
> grateful
> >
> > Please, try:
> > http://www.cirrus.com/drivers/ethernet/ethernet.cfm
> >
> > I think you will have enough drivers for CS8900A there :-)
> >
> These open-source drivers have a bug (CS will call it an 
> "assumption") that make the MAC/PHY hang on slow (read: 
> microcontroller) systems. In general, read the source code comments, 
> because the bug is documented saying: "we assume the CPU is fast 
> enough to..."
> 
> I have had contact with Cirrus/CS about this and they refer to the
> documentation
> for a correct approach, NOT these drivers.
> 
> We have been able to reproduce the CS drivers make the MAC/PHY hang under
> heavy load conditions (such as initial highly loaded flood pings 
> from a localnet host).
> 
> If you want a robust driver, I suggest at least seeing the robust approach
> taken by me (and properly documented in CS's datasheet and 
> application notes, BTW). Has not crashed in the last two years of 
> field use.
> 
> Regards,
> 
> Leon.


I need a simple driver in ANSI C, either in 8 or 16 bit mode, for to port uIP 
to microcontroller MC68HC12. 

Jorge

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