Re: [ECOS] networking on eCos

[Andrew Lunn <andrew at lunn dot ch>]

On Mon, Oct 31, 2005 at 06:28:55PM +0100, gerardo.rossi@studenti.univr.it wrote:
> >So anything you send to localhost in eCos will only be received by socket code
> >listening in eCos.
> 

> Now we have both applications that run on eCos-synth, the
> transmitter sends UDP packets correctly after a good connect() using
> a proper IP address like 142.31.248.70 .
> 
> The receiver have 2 different behaviors :
> 1) using IP like 127.0.0.1 it executes bind() between socket and address
> correctly, but the function init_all_network_interfaces() prints the following
> message: BOOTP/DHCP failed on eth0; and the recv() doesn't receive nothing.
>
> Can we configure manually via configtool the addresses, instead to use dhcp or
> bootp ?

Yes.

Disable CYGHWR_NET_DRIVER_ETH0_BOOTP. 
Enable  CYGHWR_NET_DRIVER_ETH0_ADDRS

and set CYGHWR_NET_DRIVER_ETH0_ADDRS_IP,
CYGHWR_NET_DRIVER_ETH0_ADDRS_NETMASK,
CYGHWR_NET_DRIVER_ETH0_ADDRS_BROADCAST,
CYGHWR_NET_DRIVER_ETH0_ADDRS_GATEWAY

> 2) using proper IP address the bind() fails and the output is:
> BOOTP/DHCP failed on eth0
> Bind error: Can't assign requested address
> 

> If we try to use I/O auxiliary when we start applications using the
>  --io option
> appears the following message: Error: unable to find the I/O
> auxiliary program on the current search PATH : please install the
> appropriate host-side tools.
> 
> But the eCos host-side was already compiled, what means this message?

It means it cannot find it. You need something like /opt/ecos/bin/ on
your path and you need the ethernet code in
/opt/ecos/libexec/ecos/devs/eth/synth/ecosynth/current/. Also rawether
should be set uid root.


        Andew

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