Mesa 5i25 + 7i75 +7i77 firmware

Hi. its any firmware that I can use mesa 5i25 connected to 7i77 (on P3) and 7i75 (connected on P2)?

I search on www.mesanet.com/software/parallel/5i25.zip but didn't find it...

I suppose that can use the "GPIO" names to control the 7i75 board, but have the pins names of the board will be extremely useful.


Thanks,


João

Any firmware with 7I77 on P3 will work (P2 will be GPIO 17..33)

Ok, thank you.

Hi again.

I have a problem now with the 7i75 board.

We are using a software stepgen to generate step/dir signals on output of mesa 7i75 ( mesa 5i25 GPIO). After some time with no improvements on tuninn the motor speed, we found that the step output from the board was much more slow that it should be. The period is about 2ms what makes sense in our case the servo thread is 1000000ns

I tried to lower this value, and it makes improvements, but at some point begin to have latency issues and still haven't the desired performance.

I try create make the base thread floating point so can run hm2_5i25.0.write and hm2_5i25.0.read faster, but can' find the correct sintax to make it floating point (with fp=1).

So, I'm wrong about something? I expected that the 5i25 I/O was much faster then a parallel port.

If you want to control step/dir drives from a 5i25, you should use hardware step generation

For example if you use a 7i77_7i76 configuration, you will have 5 step/dir pairs available on the 7I75
all of which are capable of 8 MHz step rates