Remora - ethernet NVEM / EC300 / EC500 cnc board

scotta wrote:

GeremyL has been doing some great physical testing of the DMA stepgen. Chasing down missing steps, with one theory being the lack of a direction setup time.

The ability to set the direction setup time is now available.

Code:

    {     "Thread": "DMA",     "Type": "DMAstepgen",         "Comment":            "X - Joint 0 step generator",         "Joint Number":        0,         "Step Pin":         "P1_22",         "Direction Pin":     "P1_17",         "Step Length":        2,         "Step Space":        3,   "Dir Setup": 2     }, Latest source has been pushed to the repo and a testing bin file as well.

 

Sorry to bother but in this repo github.com/scottalford75/Remora-RT1052-c...e/feature/DMAstepgen the source has been updated 3 hours ago but the Firmware directory has been updated a week ago. Does this mean that the compiled firmware is not yet up to date?

Sorry, my bad. Firmware just pushed to the repo.

Thank you so much scotta. You are really a godsend.
Given the pace of development i figured out I'll need a faster way of updating the firmware so I voided the waranty of my card by punching a hole through it's case lol.
 

Is there somewhere a diagram of the functioning IO of the ec500 dma for the current firmware?

Nice, mine sits on the bench naked.

No diagram as such, but the configuration file has the details. No changes with the DMA version. There is un-mapped inputs on the MPG header which I've had no luck tracing.

github.com/scottalford75/Remora-RT1052-c...CNC/ec500-rt1052.txt

Can the 1052 stepgen dma configuration be used to provide a basis for development with nvem to have a higher frequency?

I just wrote a long message, that for whatever reason disappeared, so I'm going to make this short.

I'm starting over with a fresh install. I first installed Raspberry Pi OS (Legacy) on my Pi 4b 4 Gb.
I then installed xrdp to be able to use the Pi headless, instead of the steps mentioned in the Remora documentation to enable VNC.
After that I followed the steps to install LinuxCNC until step 8, where you install the realtime kernel. At the end of the install I get the errors

And after I try to reboot the Pi, it will not boot any more. I have tried twice with the same results.
Have I done something apparently wrong and/or does anyone know how I can fix this?

Kind regards,
Christian