Potential All-in-One Single Board Computers

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1 year 8 months ago #321494 by unknown
Replied by unknown on topic Potential All-in-One Single Board Computers
The older versions are suitable for ethercat, the latest versions have a kernel that ethercat doesn't support.
Also there are some very old 64 and 32 bit PC versions there as well.
The downloads page on the homepage points to the most recent versions.

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1 year 8 months ago #321535 by rodw
Replied by rodw on topic Potential All-in-One Single Board Computers

The older versions are suitable for ethercat, the latest versions have a kernel that ethercat doesn't support.
 
That may have been resolved by the etherlabmaster guys by a recent commit on their  repo. We install from their repo so any changes flow through via their Buildbot without further action other than an apt update if an existing install or reinstalling the image.

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1 year 8 months ago #321609 by unknown
Replied by unknown on topic Potential All-in-One Single Board Computers
Ethercat appears to install ok, some modules are built for the current kernel, some are built for 6.1.0-31-arm64.

With no Ethercat devices connected I get this, would this indicate a good install ?
Code:
cnc@raspberrypi:~$ ethercat master Master0 Phase: Idle Active: no Slaves: 0 Ethernet devices: Main: d8:3a:dd:ac:2e:74 (attached) Link: UP Tx frames: 28884 Tx bytes: 1733040 Rx frames: 0 Rx bytes: 0 Tx errors: 0 Tx frame rate [1/s]: 124 124 122 Tx rate [KByte/s]: 7.3 7.3 7.1 Rx frame rate [1/s]: 0 0 0 Rx rate [KByte/s]: 0.0 0.0 0.0 Common: Tx frames: 28884 Tx bytes: 1733040 Rx frames: 0 Rx bytes: 0 Lost frames: 28884 Tx frame rate [1/s]: 124 124 122 Tx rate [KByte/s]: 7.3 7.3 7.1 Rx frame rate [1/s]: 0 0 0 Rx rate [KByte/s]: 0.0 0.0 0.0 Loss rate [1/s]: 124 124 122 Frame loss [%]: 100.0 100.0 100.0 Distributed clocks: Reference clock: None DC reference time: 0 Application time: 0 2000-01-01 00:00:00.000000000

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1 year 8 months ago #321680 by rodw
Replied by rodw on topic Potential All-in-One Single Board Computers
Yeh, that looks OK. If Ethercat was going to fail due to unsupported kernel, you would not have got that far...

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1 year 8 months ago #321683 by unknown
Replied by unknown on topic Potential All-in-One Single Board Computers
OK that's a good start, all we need is someone to confirm with actual hardware.
The following user(s) said Thank You: rodw

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1 year 6 months ago #327132 by 3404gerber
Replied by 3404gerber on topic Potential All-in-One Single Board Computers
The Radxa Zero 3E is a nice small SBC very similar to the Pi Zero but available with more RAM and an ethernet connector. You don't want to use it for step generation, but with the latest Armbian running a 6.12 RT kernel, the latency is ok, especially for a headless motion controller running a servo-thread. Could be interesting for example in a OpenPNP setup. One problem is that USB is not working with current kernel, but this will probably be fixed soon.

Yesterday I ran a G1F1X100 command with 6 TMC5160 connected over SPI @ 6MHz and spidev driver; the servo-thread (reading all 6 position, writing all 6 speed, only one PID) stayed under 0.75 ms for the entire 100 minutes.

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