On Sat, 19 Mar 2016 14:24:23 -0400 Gene Heskett <[email protected]> wrote:
> On Saturday 19 March 2016 13:23:27 Nicklas Karlsson wrote: > > > On Sat, 19 Mar 2016 09:52:55 -0700 > > > > Chris Albertson <[email protected]> wrote: > > > On Fri, Mar 18, 2016 at 11:46 AM, Nicklas Karlsson < > > > > > > [email protected]> wrote: > > > > I am planning to use a micro controller for stepper step pulse > > > > generation. I have considered to use an inverter card but special > > > > purpose stepper circuits are cheap so I use one of these instead. > > > > It should be possible to feed timer values then toggle should > > > > happen via DMA timer output compare values. > > DMA, for those cpu's that have it built in, can be a VERY useful tool. > But since LCNC doesn't seem to use it, I have to assume the worst case > scenario exists in modern cpu's... DMA is not inside Linuxcnc, it is on micro controller I already have on desktop with communication to linuxcnc. At each toggle it will transfer at which counter value next toggle will happen from a buffer. Another option is to use several timers. Timers produce square pulses as perfect as the oscillator running while software may have jitter. Nicklas Karlsson ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785231&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
