PWM timers in Micro controller trigger interrupt and write value from shadow registers periodically. With this method there may be jitter from higher priority interrupts, maybe a similar technique could be used?
> On Thu, 16 Jul 2020 at 15:44, Thomas J Powderly <[email protected]> wrote: > > > they say they address the latency issues with special tech > > "The output is buffered, which allows for stable operation of the motors. > The readout of the input states is performed after each input change, > not more frequently than every 20ms. > Linumeric-LPT cannot be used for example for reading encoders. > On the other hand, the reading of probing, limit sensors or homing > inputs is sufficient at a frequency of 50 Hz" > > I think that they are correct on that last point. At sensible probing > speeds most machines don't move very far in 20 mS. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
