Re: [ECOS] lwip on an AT91 EB55

[Sebastian Block <sebastianblock at gmx dot net>]

Jani Monoses wrote:

> > There is need for 2 connections .. on control and one data connection.
> >
> > The control connection works fine ... but when I want to send data 
> > through the data connection then only is made the connection but 
> > can't receive or send data throw it.
>
>
> Is the data connection made from the same side as the control 
> connection? Active or passive FTP. I know lwip is mostly tested in 
> server apps but it should work as a connection initiator too.
> You might want to try the app using the linux synthetic target first, 
> or something non-PPP
> anyway to narrow the problem.
>
> Jani
In synthetic target the ftp-code works nice.
But I finally found something after switching all debugging messages on.
Here the output

ip_output_if: pp1
IP header:
+-------------------------------+
| 4 | 5 |  0x00 |       131     | (v, hl, tos, len)
+-------------------------------+
|       17      |010|       0   | (id, flags, offset)
+-------------------------------+
|  255  |    6  |    0xf60f     | (ttl, proto, chksum)
+-------------------------------+
|  192  |  168  |    2  |    2  | (src)
+-------------------------------+
|  192  |  168  |    2  |    1  | (dest)
+-------------------------------+
netif->output()pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 0x02038c4c
pbuf_alloc(length=0) == 0x02038c4c
pppifOutput[0]: proto=0x0021
PPP nPut: incomplete sio_write(33908052,, 136) = 128

incomplete sio_write ... it wrote 128 of 136 bytes
Doesn't know why don't send the other 8 bytes.
The output comes from function nPut in ppp.c
Hope somebody can give my a hint for solving this problem.

Sebastian

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