I am currently implementing a stepper generator on micro controller which may output square waves with clock frequency accuracy with use of built in timer peripheral. It may generate square wave probably up to at least in the MHz range and be extended downwards as far as needed by some adjustment in software. It seems to work great and it should only be finnished off. I currently use relatively expensive micro controller but cheap available for around $1 in large quantity should also work just as fine since it have the same peripheral I used.
It no problem to output a sequence of square pulses or with a certain frequency. Linuxcnc seems to output step velocity and read back accumulated number of steps generated. What puzzle me is period may vary. As is now I start to use values as soon as they are received via Ethernet. I have used other networks like CAN before there everything is synchronized with "broad casted" with a high priority sync message. Do anybody have a clue how synchronization should be done for mesa Hostmot cards via Ethernet? Or more generally in Linuxcnc? Nicklas Karlsson ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
