Peter that sounds great. Can I get some links into the relevant pieces? I'm willing to work on this, and add to the hm2 driver, do some testing and get something going after I finish my man pages. I have a 6i25 and a smart serial IO card in my laser so I can test as I develop.
On Mon, Jun 25, 2018 at 6:23 PM Peter C. Wallace <[email protected]> wrote: > On Mon, 25 Jun 2018, Curtis Dutton wrote: > > > Date: Mon, 25 Jun 2018 10:24:26 -0400 > > From: Curtis Dutton <[email protected]> > > Reply-To: EMC developers <[email protected]> > > To: EMC developers <[email protected]> > > Subject: Re: [Emc-developers] Pre-Pull Request Review: Better laser > engraver > > support + new HAL pin type "PORT" > > > > Andy, > >I will look into this. I believe I had a conversation with Peter a while > >back about getting a raster into Mesa cards. I plan on pursuing that. > Right > >now I have my servo thread rate jacked up higher on my laser to get a > >little more detail. A hardware version is a must for an industrial grade > >high speed engraver. > > > >This stream type would be our way into programming a hardware raster. > > > > I do have firmware for this now = DataPainter module > > This is a device similar to our stepgen hardware but instead of outputing > steps, it outputs bits or 8 bit PWM at the requested rate. The data comes > from > a small FIFO (32 deep by 32 wide) so can contain 1024 bits or 128 PWM > bytes. > If the host keeps the FIFO full and you allow 1/2 depletion, this gives > you a > 512 KHz maximum bit data rate at 1 KHz servo thread or a 64 Khz analog > data > rate using PWM. The stepgen arrangement allows "position locking" the data > stream to an axis, encoder, clock, calculated length, etc via PID to a > small > fraction of a bit time. A larger FIFO could be added if higher data rates > were > required (up to 10 MHz or so) > > There are start and stop compare registers for start of line and line end > raster data gating (so no fill data is needed) > > The bad news is that it is untested other tha basic data tests and that > there > is no hm2 driver for it yet (but there is a register map on the latest hm2 > source) > > > Peter Wallace > Mesa Electronics > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
