UART

[Vanalme Filip]

> -----Original Message-----
> From: barebox-bounces at lists.infradead.org [mailto:barebox-
> bounces at lists.infradead.org] On Behalf Of Vanalme Filip
> Sent: dinsdag 1 maart 2011 13:47
> To: barebox at lists.infradead.org
> Subject: RE: UART
> 
> > -----Original Message-----
> > From: barebox-bounces at lists.infradead.org [mailto:barebox-
> > bounces at lists.infradead.org] On Behalf Of Vanalme Filip
> > Sent: dinsdag 1 maart 2011 13:24
> > To: barebox at lists.infradead.org
> > Subject: UART
> >
> > (i.MX27 board)
> >
> > When I start a tftp transfer from the Barebox command prompt (or a ping), I
> (almost)
> > always first get an error message on the console output :
> > error frame: 0xa7b058f0 0x00000882
> > After that, the tftp seems to continue as expected. File gets transferred and looks
> > ok.
> > As far as I can see (in fec_imx.c), the error indicates a FIFO overrun. Seems to
> > make no sense at the beginning of a transfer...
> >
> > Any idea if it's normal that this message appears at the beginning of a network
> > related command ?
> > I don't think it has any influence on the following communication. However,
> > sometimes I notice some delay between executing the command and the real
> start
> > of the communication. Maybe there's a kind of timeout to recover from that error ?
> >
> [Filip]
> It seems I don't get that "error frame" message if I execute network commands (i.e.
> ping or tftp) immediately one after the other. The moment there are some seconds
> between two commands, I have the message. As if invalid data is coming in during
> "idle" condition and filling the receive buffer.

[Filip]  I noticed I used the wrong Subject ! Of course, it should be FEC instead of UART.... Sorry !


Meanwhile, I even noticed other problems while transferring files with tftp. Sometimes, in the middle of a transfer, file transfer stops. With a network monitoring tool, I can see that my board is still sending Acknowledgments to the server for a certain block number, but the server can't send any packet anymore to my device (Destination unreachable (Port unreachable)). The device (Barebox) stays in this condition forever (showing rotating bar) until I interrupt with ctrl-c


> >
> > Filip
> >
> >
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