serials errors when connecting with my mesa 7i76 card

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5 years 5 months ago #208362 by Goulven
serials errors when connecting with my mesa 7i76 card was created by Goulven
Hi,

I've serials errors when connecting with my new mesa 7i76 card. I've disable wifi and dhcp for this network.

When launching linuxcnc, I always have this error:
hm2/hm2_7i76e.0: Smart Serial port 0: DoIt not cleared from previous servo thread. Servo thread rate probably too fast. This message will not be repeated, but the hm2_7i76e.0.sserial.0.fault-count pin will indicate if this is happening frequently.

I can run some gcode instructions, but after a moment, i have this errors and i have to reboot card or explotation system :
hm2/hm2_7i76e.0: Watchdog has bit! (set the .has-bit pin to False to resume)

hm2/hm2_7i76e.0: Watchdog has bit! (set the .has-bit pin to False to resume)
hm2/hm2_7i76e.0: Smart serial card hm2_7i76e.0.7i76.0.0 local error = (13) Communication error

hm2/hm2_7i76e.0: Smart serial card hm2_7i76e.0.7i76.0.0 local error = (13) Communication error
hm2/hm2_7i76e.0: Smart serial card hm2_7i76e.0.7i76.0.0 local error = (3) Timeout
hm2/hm2_7i76e.0: Smart Serial Comms Error: There have been more than 1 errors in 10 thread executions at least 200 times. See other error messages for details.
hm2/hm2_7i76e.0: ***Smart Serial Port 0 will be stopped***
hm2/hm2_7i76e.0: Smart serial card hm2_7i76e.0.7i76.0.0 local error = (3) Timeout

hm2/hm2_7i76e.0: Smart Serial Comms Error: There have been more than 1 errors in 10 thread executions at least 200 times. See other error messages for details.

hm2/hm2_7i76e.0: ***Smart Serial Port 0 will be stopped***

I put the terminal output of linuxcnc 2.8.0 in the attachments as well as the hal and ini config files.

Thank you in advance.

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  • BeagleBrainz
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5 years 5 months ago #208365 by BeagleBrainz
Replied by BeagleBrainz on topic serials errors when connecting with my mesa 7i76 card
What is the output of
Code:
uname -a

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5 years 5 months ago #208367 by tommylight
Replied by tommylight on topic serials errors when connecting with my mesa 7i76 card
ip a
ping 10.10.10.10
Results?

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5 years 5 months ago #208369 by Goulven
Replied by Goulven on topic serials errors when connecting with my mesa 7i76 card
The latest linuxcnc distribution:
Code:
root@linuxcnc:~# uname -a Linux linuxcnc 4.19.0-11-rt-amd64 #1 SMP PREEMPT RT Debian 4.19.146-1 (2020-09-17) x86_64 GNU/Linux root@linuxcnc:~#

Yes i can ping it:
Code:
root@linuxcnc:~# ping 10.10.10.10 PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data. 64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.358 ms 64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.359 ms 64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.358 ms 64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.352 ms ^C --- 10.10.10.10 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 61ms rtt min/avg/max/mdev = 0.352/0.356/0.359/0.023 ms root@linuxcnc:~#

i've two ethernets cards plus one wifi: i disable enp5s0 when running linuxcnc (ifup/ifdown) and i disable the wifi one in my grub.cnf:
Code:
root@linuxcnc:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp5s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 54:b2:03:93:bd:e0 brd ff:ff:ff:ff:ff:ff inet 192.168.1.200/24 brd 192.168.1.255 scope global dynamic enp5s0 valid_lft 859048sec preferred_lft 859048sec inet6 2a01:e34:ef39:4c50:56b2:3ff:fe93:bde0/64 scope global dynamic mngtmpaddr valid_lft 86084sec preferred_lft 86084sec inet6 fe80::56b2:3ff:fe93:bde0/64 scope link valid_lft forever preferred_lft forever 3: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 54:b2:03:93:bd:df brd ff:ff:ff:ff:ff:ff inet 10.10.10.2/24 brd 10.10.10.255 scope global eno1 valid_lft forever preferred_lft forever inet6 fe80::56b2:3ff:fe93:bddf/64 scope link valid_lft forever preferred_lft forever 4: wlp6s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 84:c5:a6:ea:f1:d7 brd ff:ff:ff:ff:ff:ff root@linuxcnc:~# root@linuxcnc:~# ifconfig eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.10.10.2 netmask 255.255.255.0 broadcast 10.10.10.255 inet6 fe80::56b2:3ff:fe93:bddf prefixlen 64 scopeid 0x20<link> ether 54:b2:03:93:bd:df txqueuelen 1000 (Ethernet) RX packets 12 bytes 1190 (1.1 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 124 bytes 10470 (10.2 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 16 memory 0xdc300000-dc320000 enp5s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.200 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 2a01:e34:ef39:4c50:56b2:3ff:fe93:bde0 prefixlen 64 scopeid 0x0<global> inet6 fe80::56b2:3ff:fe93:bde0 prefixlen 64 scopeid 0x20<link> ether 54:b2:03:93:bd:e0 txqueuelen 1000 (Ethernet) RX packets 19979 bytes 7145916 (6.8 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 16089 bytes 2485061 (2.3 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device memory 0xdc200000-dc21ffff lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Boucle locale) RX packets 49 bytes 5196 (5.0 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 49 bytes 5196 (5.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 root@linuxcnc:~#

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  • BeagleBrainz
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5 years 5 months ago #208370 by BeagleBrainz
Replied by BeagleBrainz on topic serials errors when connecting with my mesa 7i76 card
What are your latency test results ?

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5 years 5 months ago #208371 by tommylight
Replied by tommylight on topic serials errors when connecting with my mesa 7i76 card

Goulven wrote: Yes i can ping it:

Code:
root@linuxcnc:~# ping 10.10.10.10 PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data. 64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.358 ms 64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.359 ms 64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.358 ms 64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.352 ms ^C --- 10.10.10.10 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 61ms rtt min/avg/max/mdev = 0.352/0.356/0.359/0.023 ms root@linuxcnc:~#

This begs the question, is the Mesa board directly connected to the PC ? NO switches or HUB's in-between !
It can also be an Intel ethernet card on the PC, there is something to help with that, but PCW knows better about it.
Another thing, why ROOT?
Not advisable to use root ....

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5 years 5 months ago #208373 by Goulven
Replied by Goulven on topic serials errors when connecting with my mesa 7i76 card
Hi, thanks both for your responses.

Two screens capture in attachments:
latency.png
switch.jpg

I use a switch between the card and the computer and i have disable dhcp in the switch. I have just regular cable, for a direct connection i thinks i should use a cross cable ?

Root was just for executing root command, i run linuxcnc as a regular user.

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5 years 5 months ago #208375 by tommylight
Replied by tommylight on topic serials errors when connecting with my mesa 7i76 card

tommylight wrote: NO switches or HUB's in-between !

And latency is terrible, is that still under the RT kernel ? Disable everything related to power savings, hypethreading, speedstep, C states, virtualisation, etc etc, in BIOS.
Also a normal straight cable works just fine, almost all network adapters post 2005-6 should have "auto negotiation" so cross cable is a thing of the past.

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5 years 5 months ago #208381 by Goulven
Replied by Goulven on topic serials errors when connecting with my mesa 7i76 card
I bypass the switch and i can still ping the card... I'm a man of the past !!! But still have the sames errors.

It is my only computer, and i have virtualisation enebled.
I will change my bios settings...

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5 years 5 months ago #208392 by PCW
Replied by PCW on topic serials errors when connecting with my mesa 7i76 card
Note that you should not have your wireless setup on the same 10.10.10.XX
subnet, it should be left at the default 192.168.1.XX range. There is no reason
to change your router settings at all. Nothing else in the network should
be in the 10.10.10.XX range except the static IP address of the host PC and
the 7I76E card.

The latency test is probably meaningless because the PC cannot
possibly service the base thread at 40 KHz. Only the servo thread is
required. To test with only the servo thread, run:

latency-histogram --nobase --sbinsize 1000

The ping times are quite bad also. If the PC has a Intel Ethernet interface chip,
follow the instructions for disabling irq coalescing in the hm2_eth manual page

man hm2_eth

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