Mario. wrote:
I have the ultimate goal of reaching 2 milion quadrature output
changes per second from any of the outputs, even 200 thousand per
second is almost good for me.
How does your method help me get to the intended goal? I'm talking
about parallel port of course.
It will be
Jon Elson wrote:
Mario. wrote:
I have the ultimate goal of reaching 2 milion quadrature output
changes per second from any of the outputs, even 200 thousand per
second is almost good for me.
How does your method help me get to the intended goal? I'm talking
about parallel port of course.
I know it is impossible die to the insane complexity our hardware and
software has.
When I calculated the requirements in 2005 the goal was not to be
dependent on the electronics and FPGA Jon Elson was making at that
time.
I agree that it will be probably necessary to buy it from him (or
somebody
Mario. wrote:
But back to what Andreas proposes: I think that interrupt frequency in
direct pulse output such as the quadrature one may benefit from
interrupt frequency that will be variable withing certain limits.
The problem currently is that we have TWO loops - one at ~1kHz for
trajectory
John Kasunich wrote:
Jon Elson wrote:
Even getting 200 KHz output with complex code is very unlikely. You
would need to set the interrupt frequency to 200 KHz = 50 us,
200KHz interrupts is a 5uS period, not 50uS. Not happening on any PC.
I think Alex Joni once got the period
Many cheap mainboards with integrated CPUs do 100k interrupts per
second (100k steps per second in quadrature outputs) pretty well.
We need to see the difference betwee the step/dir output and clean,
fast quadrature output as step/dir output can reach at most 50% of the
output step speed of the
Dear Developers
I am new to your Mailing List and want to introduce myself: I live in Germany,
studied applied Engineering of Mechatronics some years ago and i am fascinated
of CNC Stepper Software.
The first SW i used was written in TurboPascal, using DOS, the code came along
with the SMC1500
I have the ultimate goal of reaching 2 milion quadrature output
changes per second from any of the outputs, even 200 thousand per
second is almost good for me.
How does your method help me get to the intended goal? I'm talking
about parallel port of course.
On Sat, Feb 28, 2009 at 10:09 PM,
