Re: [CAD_CAM_EDM_DRO] Re: USB CNC (was Interface. Gauging interest.)

Hi Wayne,

So the new one is rev A, and the old one is rev D? Now I'm really confused!

You might take a look at a schematic of a LMD18245 driver board. EAS
microstep is a good example, PICSTEP is another.

http://www.embeddedtronics.com/
http://www.fromorbit.com/projects/picstep/index.php

Both have source code for the 16F627 one asm, one C. I love it!

You've got quite a lot of thought and work in your system, and I really
appreciate being able to study your and other's works.

Wayne C. Gramlich wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Alan Marconett <KM6VV@...> wrote:
>
>>Hi Wayne,
>>
>>An old version you say? Thought I was looking at the
>>newest one!
>
>
> The latest one is at:
>
> <http://gramlich.net/projects/cnc/axis4/index.html>
>
> You were probably looking at the previous release:
>
> <http://gramlich.net/projects/cnc/motion/rev_d/index.html>
>
>>So then you aren't using the USB. Too bad. I was hoping
>>to get a peek at some USB code for the PIC.
>
>
> If you want to read some USB code, go to the Microchip
> web site:
>
> <http://www.microchip.com>
>
> and type "USB" into the search bar on the main page.
> If you look through the resulting search results,
> you'll find their example USB driver code labeled
> as "Firmware Drivers". The code is written in
> Hi-TEC C.
>
> Bringing up a UART looks to be about 100 times easier
> than bringing up a USB connection in terms of the
> amount of code required. That is why I ultimately
> dumped USB support; it looked like a major project
> that could distract me for many many months.
>
> [snip]
>
> Enjoy,
>
> -Wayne
>

Yeah, I'm seeing it as a major project! But one I need to get up on. I
had previously downloaded and had been studying the USB example from
Microchip (in C18 tho', I think). Files like cdc.c, usbdsc.c, usbmmap.c
etc.). I think someone called Fred mostly ported it over to PICC-18. I
have it compiling.

I need to get back to that (USB). But as usual, I'm distracted on
another project, the Baby PCB Router; and it gets a driver/PS with some
nice LMD18245 driver boards using PICs. I have the EAS code for the
driver PICs. And now a new piece to put in, a USB-CNC-PARALLEL board!

I really like to be "inside" of the various parts of our CNC systems! I
do have a stepper running on a PIC, and I intend to "splice" in USB and
add a few more coordinated axis. For myself, if nothing else!

OK, I may start using Mach, and I may put in someone else's "black box"
in my PCB router. But I want inside as many parts as possible!

Thanks again for all your efforts!

Alan KM6VV