On 04/02/2018 09:36 PM, Chris Albertson wrote:
How to generate pulses with 50nS jitter? Use hardware,
not software.
The uP has 10 hardware counter/compare timers built in and
you can
program them to divide down the a 1MHz clock.
If you have a 1 MHz clock, then you can't have any pulses
with finer resolution than 1 us.
So, a 100 KHz step pulse train will have an ~10% velocity
jump to go to the next faster or slower velocity.
My Universal Stepper Controller has a 10 MHz clock to the
step generators, so that has 100 ns resolution.
I recommend a 300 KHz maximum step rate with it, so the next
higher or lower velocity is about a 3% jump.
Jon
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