Remora rp2040 troubles on Z axis.

Hi all!

I've been testing on wiznet w5500-evb-pico the firmware
remora-rp2040-2.0.0.uf2, from github.com/scottalford75/Remora-RP2040-W5500

In boardconfig.h:

StepgenConfig StepgenConfigs[] = {{"X-Axis", 0, "GP02", "GP03"},
                                  {"Y-Axis", 1, "GP04", "GP05"},
                                  {"Z-Axis", 2, "GP06", "GP07"},
                                  {"A-Axis", 3, "GP08", "GP09"}};

It seems to drive correctly my step motors for X and Y, but for the
Z axis i get some sort of square wave around 50Khz!

With the oscilloscope, i've seen a square with fixed frequency on GP6.

Are anyone experienced anything like that?

Bye,
Gluca.

 

>> is the scaling set correctly
I suppose, you mean the "scale" factor inside linuxcnc ini file.
The problem arises as soon as i upload the uf2 file.

>> try another pin
I've been trying to associate zpulse to another pin, but it didn't work:
the old pin steel presented the square wave, the new zpin was mute.
Insted, i had a functional zdir pin, in both cases.

G.

If I understand the question correctly, you are probably maxing out the steprate.

just ask your questions in the RP2040 thread. its easier to keep track and you will get better responses