A Dijous 12 Abril 2007 00:56, Jan Kiszka va escriure:
> Leopold Palomo-Avellaneda wrote:
> > A Dijous 05 Abril 2007 19:30, Jan Kiszka va escriure:
> >> Leopold Palomo-Avellaneda wrote:
> >>> Hi,
> >>>
> >>> probably I'm doing some big mistake but I'm a bit lost in a trouble
> >>> with rtnet. I have rtnet compiled, installed and running without
> >>> rtmac/tdma.
> >>>
> >>> I have configured the interface and the routes:
> >>>
> >>> $:~/robotica/orocos/rtnet-proves$ sudo /usr/local/rtnet/sbin/rtifconfig
> >>> rteth0 Medium: Ethernet Hardware address: 00:A0:C9:1D:52:B9
> >>> IP address: 192.168.1.3 Broadcast address: 192.168.1.255
> >>> UP BROADCAST RUNNING MTU: 1500
> >>>
> >>> rtlo Medium: Local Loopback
> >>> IP address: 127.0.0.1
> >>> UP LOOPBACK RUNNING MTU: 1500
> >>>
> >>> $:~/robotica/orocos/rtnet-proves$ sudo /usr/local/rtnet/sbin/rtroute
> >>> Host Routing Table
> >>> Hash Destination HW Address Device
> >>> 00 0.0.0.0 00:00:00:00:00:00 rtlo
> >>> 01 127.0.0.1 00:00:00:00:00:00 rtlo
> >>> 03 192.168.1.3 00:00:00:00:00:00 rtlo
> >>> 3F 192.168.1.255 FF:FF:FF:FF:FF:FF rteth0
> >>>
> >>>
> >>> I can do a ping to my rteth0:
> >>> $:~/robotica/orocos/rtnet-proves$ sudo /usr/local/rtnet/sbin/rtping
> >>> 192.168.1.3
> >>> Real-time PING 192.168.1.3 56(84) bytes of data.
> >>> 64 bytes from 127.0.0.1: icmp_seq=1 time=22.9 us
> >>> 64 bytes from 127.0.0.1: icmp_seq=2 time=14.0 us
> >>> .....
> >>>
> >>> if I run the examples of the rtai directory, both run. However I don't
> >>> see the expected result because the server run:
> >>> $:~/robotica/orocos$ sudo /usr/local/rtnet/examples/rtai/simpleserver
> >>> 5000 RTnet, simpleserver for LXRT
> >>>
> >>> and the client runs:
> >>> $:~/robotica/orocos/rtnet-proves$
> >>> sudo /usr/local/rtnet/examples/rtai/simpleclient 5001 192.168.1.3 5000
> >>> RTnet, simpleclient for LXRT
> >>>
> >>> and exit and no message is printed in the server side.
> >>>
> >>> Someone could tell me how can I test what is wrong or what I'm doing
> >>> bad?
> >>
> >> Not immediately. I must admit, the RTAI examples are in bad shape. I
> >> would start checking the return codes of all involved RTnet service
> >> requests. One of them should/must fail. Maybe the information which one
> >> and with what code will help.
> >
> > ok, I had done it in a modified version of the examples. In the server
> > program, I added some printf to the return values of the functions, and
> > so, the important parts:
> >
> > .....
> >
> > char *a1;
> > a1= inet_ntoa(local_addr.sin_addr);
> > printf("Running the server in the ip: %s\n", a1 );
> > .....
> > this print:
> > Running the server in the ip: 0.0.0.0
> >
> > ..............
> > /* Switch over to hard realtime mode. */
> > rt_make_hard_real_time();
> >
> > printf("Ret after the rt = %d \n", ret );
> > .........
> > this print:
> > Ret after the rt = 0
> >
> > ..........
> > /* Bind socket to local address specified as parameter. */
> > ret = rt_dev_bind(sockfd, (struct sockaddr *) &local_addr,
> > sizeof(struct sockaddr_in));
> >
> > printf("Ret = %d \n", ret );
> > ...........
> > here, the print:
> > Ret = 0
> >
> > so, I understand that open the socket without any problem
> >
> > ............
> > /* Block until packet is received. */
> > ret = rt_dev_recv(sockfd, msg, sizeof(msg), 0);
> > ...............
> >
> > but the program is blocked here.
>
> "but"? Sorry, don't understand. Does the application block here as
> expected? But then it never returns from rt_dev_recv?
exactly, _never_ returns this function. The program is blocked here. I
understand that is waiting to receive the packets.
> > In the client side:
> > sudo ./simpleclient 5001 127.0.0.1 5000
> > RTnet, simpleclient for LXRT
> >
> > The connection says : 0
> >
> >
> > .............
> > /* Bind socket to local address specified as parameter. */
> > ret = rt_dev_bind(sockfd, (struct sockaddr *) &local_addr,
> > sizeof(struct sockaddr_in));
> > printf("Ret after the rt_dev_bind = %d \n", ret );
> > ...........
> >
> > print:
> > Ret after the rt_dev_bind = 0
> > ......................
> > /* Specify destination address for socket; needed for
> > rt_socket_send(). */ int value = rt_dev_connect(sockfd, (struct sockaddr
> > *) &server_addr, sizeof(struct sockaddr_in));
> > printf("The connection says : %i\n", value);
> > ..................
> > The connection says : 0
> >
> >
> > really I'm blocked now ....
>
> ???
>
> What does rt_dev_send return?
The send command says : 40
> Additionally, you could attach RTcap to the loopback device in sniff if
> there is something on the "virtual" wire, and how that frame precisely
> look like.
Ok, I will try....
> >> BTW, I'm always open to apply cleanup patches for the RTAI examples, or
> >> new and better ones. But I depend on RTAI users here, I don't have that
> >> test environment anymore.
> >
> > Ok, I take note.
> >
> > regards,
> >
> > Leo
>
> Jan
Thank's for all.
Leo
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