Remora - ethernet NVEM 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.

    {
    "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.

 

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.

    {
    "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.

cakeslob wrote:

Can this be backported? It doesnt look like it should have to be DMA specific, but Im not too good with computers so I figured I would ask.


Also, saw you had a new repo for remora-nv docs, do you think we needed a whole new repo for the nv docs? I just figured we could jam all the nvem specific parts within the hadrware specific pages. the rest of it seems pretty much the same so it looked like we could do it all as one. Here is what I had so far for ethernet branch, I used it when I was setting up my pico-dlx board.
https://github.com/cakeslob/Remora-docs/tree/ethernet

You mean ported to the Software Step Gen?
They don't use the same principals, software step gen doesnt use buffers its not the same. I had a huge explanation but to put it simply, the problem with adding Step Length, Direction Setup and Step Space inside the software step gen is that it will slow all the program down, meaning 40khz wont be 40khz anymore. So not really compatible, it could be made more compatible but we arn't using RTOS or some sort of Operating System that can switch between threads and execute other code, if we did than it would be possible, i'm working on a port to Azure RTOS with scott but I hit a few snags and getting this DMA Step Gen firmware version done first and stable, is higher priority.

cncmiljc wrote:

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

cakeslob wrote:

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.

    {
    "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.

Can this be backported? It doesnt look like it should have to be DMA specific, but Im not too good with computers so I figured I would ask.


Also, saw you had a new repo for remora-nv docs, do you think we needed a whole new repo for the nv docs? I just figured we could jam all the nvem specific parts within the hadrware specific pages. the rest of it seems pretty much the same so it looked like we could do it all as one. Here is what I had so far for ethernet branch, I used it when I was setting up my pico-dlx board.
https://github.com/cakeslob/Remora-docs/tree/ethernet