Dear all, I have the same problem.
My system specs Linux Distribution : ubuntu 20.04, Kernel version 4.19, Xenomai 3.1, Master version 1.5.2 + Gavin Lambert patch set Ethernet Driver : ec_e1000e The problem is reproducible using the xenomai example of etherlab master : When I run the program on master#0 everything works as expected, if I run the program on master#1 it is not able to access the device, the function ecrt_request_master(1) returns the error « Failed to open /dev/rtdm/EtherCAT1: No such device or address ». After starting Ethercat service the output of the dmesg command is as follows: [ 460.502346] EtherCAT: Master driver 1.5.2 365eea9297ef+ [ 460.502441] EtherCAT 0: Registered RTDM device EtherCAT0. [ 460.502491] EtherCAT 1: Registered RTDM device EtherCAT1. [ 460.502491] EtherCAT: 2 masters waiting for devices. [ 460.511205] e1000e 0000:07:00.0 enp7s0: removed PHC [ 460.577656] e1000e: enp7s0 NIC Link is Down [ 460.595500] e1000e 0000:00:19.0 enp0s25: removed PHC [ 460.682249] e1000e: enp0s25 NIC Link is Down [ 460.735962] ec_e1000e: EtherCAT-capable Intel(R) PRO/1000 Network Driver - 3.2.6-k-EtherCAT [ 460.735963] ec_e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 460.736267] ec_e1000e 0000:00:19.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode [ 460.816493] ec_e1000e 0000:00:19.0 0000:00:19.0 (uninitialized): registered PHC clock [ 460.892157] EtherCAT: Accepting 90:1B:0E:A6:10:79 as main device for master 0. [ 460.989318] EtherCAT 0: Starting EtherCAT-IDLE thread. [ 460.989456] ec_e1000e 0000:00:19.0 ecm0 (uninitialized): (PCI Express:2.5GT/s:Width x1) 90:1b:0e:a6:10:79 [ 460.989457] ec_e1000e 0000:00:19.0 ecm0 (uninitialized): Intel(R) PRO/1000 Network Connection [ 460.989498] ec_e1000e 0000:00:19.0 ecm0 (uninitialized): MAC: 11, PHY: 12, PBA No: FFFFFF-0FF [ 460.989723] ec_e1000e 0000:07:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode [ 461.032767] ec_e1000e 0000:07:00.0 0000:07:00.0 (uninitialized): registered PHC clock [ 461.080570] EtherCAT: Accepting 68:05:CA:3C:26:A8 as main device for master 1. [ 461.145721] EtherCAT 1: Starting EtherCAT-IDLE thread. [ 461.145778] ec_e1000e 0000:07:00.0 ecm1 (uninitialized): (PCI Express:2.5GT/s:Width x1) 68:05:ca:3c:26:a8 [ 461.145779] ec_e1000e 0000:07:00.0 ecm1 (uninitialized): Intel(R) PRO/1000 Network Connection [ 461.145795] ec_e1000e 0000:07:00.0 ecm1 (uninitialized): MAC: 3, PHY: 8, PBA No: E46981-008 [ 463.147267] ec_e1000e: ecm1 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None [ 463.147384] ec_e1000e 0000:07:00.0 ecm1 (uninitialized): 10/100 speed: disabling TSO [ 463.147388] EtherCAT 1: Link state of ecm1 changed to UP. [ 463.148591] EtherCAT 1: 3 slave(s) responding on main device. [ 463.148592] EtherCAT 1: Slave states on main device: PREOP. [ 463.148815] EtherCAT 1: Scanning bus. [ 463.359813] EtherCAT 1: Bus scanning completed in 211 ms. [ 463.359815] EtherCAT 1: Using slave main-0 as DC reference clock. [ 463.364853] EtherCAT 1: Slave states on main device: INIT, PREOP. [ 463.368902] EtherCAT 1: Slave states on main device: INIT. [ 463.372933] EtherCAT 1: Slave states on main device: PREOP. and the output of the command "ethercat -m 1 slaves » is : sudo ethercat -m 1 slaves 0 0:0 PREOP + EK1100 EtherCAT-Koppler (2A E-Bus) 1 0:1 PREOP + EL2008 8K. Dig. Ausgang 24V, 0.5A 2 0:2 PREOP + EL3102 2K. Ana. Eingang +/-10V, Diff. SDO request on master 1 seems to work, for example the command « ethercat -m 1 -p 2 upload -t int16 0x3102 0X2 » returns consistent values. I tried changing the order of the masters, changing the ethernet board (ec_igb), the problem is still the same. Do you have any test ideas to determine where this error comes from? Thank you Philippe > Le 26 août 2021 à 07:49, HoThanhtam <thanhtam...@neuromeka.com> a écrit : > > Hello > I am using unofficial patchset to be able to use the EtherCAT master code in > Xenomai 3. I enabled 2 masters on 2 NIC ports. I built an application using > libethercat_rtdm, this application work fine if I conrtol slave via Master#0. > However when I switch to Master#1 ( ecrt_request_master(1) ) then I got the > error "Failed to open /dev/rtdm/EtherCAT1: No such device or address" > althought both /dev/rtdm/EtherCAT0 and /dev/rtdm/EtherCAT1 exist. > By the way, this application worked well on Xenomai 2 system, on both > Master#0 and Master#1. > Any advise? > Thank you. > > -- > Etherlab-users mailing list > Etherlab-users@etherlab.org > https://lists.etherlab.org/mailman/listinfo/etherlab-users
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