Am 17.09.2010 09:38, Michel He wrote: > Ok, actually I try to decompose rtnet script. so I load step by step > modules and make initialization of rtroute. the tdma configuration in > slave has blocked the entire system. in the master side it seems ok. > > in slave side: > cd /usr/rtnet/modules/ > insmod rtnet.ko > insmod rtipv4.ko > insmod rtpacket.ko > insmod rt_loopback.ko > insmod rt_dm9000.ko mac_addr=0x00,0x14,0x2D,0x00,0x01,0x02 > insmod rtmac.ko > insmod tdma.ko > insmod rtcfg.ko > insmod rtudp.ko > > rtifconfig rteth0 up 10.0.0.2 > rtifconfig rtlo up 127.0.0.1 > #10.0.0.1 is master > #rtroute add 10.0.0.1 00:14:2D:00:01:01 dev rteth0 > #10.0.0.2 is slave > rtroute add 10.0.0.2 00:14:2D:00:01:02 dev rteth0 > > #slave > tdmacfg rteth0 slave > tdmacfg rteth0 slot 0 400 > #blocked system > > if the tdmacfg is omitted, the rtping would work, without timing > constraint though. > r...@mbs270:/usr/neue_rtnet$ rtping 10.0.0.1 > Real-time PING 10.0.0.1 56(84) bytes of data. > 64 bytes from 10.0.0.1: icmp_seq=1 time=320.0 us > 64 bytes from 10.0.0.1: icmp_seq=2 time=287.4 us >
In the absence of a TDMA master, or if it is not working, the slave will simply block outgoing traffic (waiting for the TDMA sync frame). I bet that is the case here. BTW, you may want to check what is going on in your network by attaching RTcap to the rt interfaces on involved nodes and visualizing the traffic e.g. via Wireshark. Jan
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