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  • Murphy
  • Murphy
02 Sep 2025 15:38 - 02 Sep 2025 17:32
  • Aciera
  • Aciera's Avatar
02 Sep 2025 15:28 - 02 Sep 2025 17:10
Replied by Aciera on topic halui.mdi-command-NN pins not showing up

halui.mdi-command-NN pins not showing up

Category: HAL

I gather that the 'XZ' config is the one that works, still seems odd that this would create the whole set of 'halui.axis.[x,y,z,a,b,c,u,v,w].*' pins instead of just the expected X and Z axes.

[edit]
Just checked the usual 'axis.ini' on master and it looks like halui creates 'axis' pins for all nine axes even if only 'X', 'Y' and 'Z' are configured. That does not look right to me. Not sure if that is related to the issue at hand though.
 

[edit2]
changing this section:
github.com/LinuxCNC/linuxcnc/blob/master...r_intf/halui.cc#L873

to this avoids the creation of pins for unconfigured axes:
    for (axis_num = 0; axis_num < EMCMOT_MAX_AXIS; axis_num++) {
        if ( !(axis_mask & (1 << axis_num)) ) { continue; }
        char c = "xyzabcuvw"[axis_num];
        retval =  hal_pin_bit_newf(HAL_IN, &(halui_data->axis_nr_select[axis_num]), comp_id, "halui.axis.%c.select", c);
        if (retval < 0) return retval;
        retval =  hal_pin_bit_newf(HAL_IN, &(halui_data->ajog_plus[axis_num]), comp_id, "halui.axis.%c.plus", c);
        if (retval < 0) return retval;
        retval =  hal_pin_bit_newf(HAL_IN, &(halui_data->ajog_minus[axis_num]), comp_id, "halui.axis.%c.minus", c);
        if (retval < 0) return retval;
        retval =  hal_pin_float_newf(HAL_IN, &(halui_data->ajog_analog[axis_num]), comp_id, "halui.axis.%c.analog", c);
        if (retval < 0) return retval;
        retval =  hal_pin_float_newf(HAL_IN, &(halui_data->ajog_increment[axis_num]), comp_id, "halui.axis.%c.increment", c);
        if (retval < 0) return retval;
        retval =  hal_pin_bit_newf(HAL_IN, &(halui_data->ajog_increment_plus[axis_num]), comp_id, "halui.axis.%c.increment-plus", c);
        if (retval < 0) return retval;
        retval =  hal_pin_bit_newf(HAL_IN, &(halui_data->ajog_increment_minus[axis_num]), comp_id, "halui.axis.%c.increment-minus", c);
        if (retval < 0) return retval;
    }

This seems not related to the issue discussed here though.
  • heaven
  • heaven
02 Sep 2025 15:08

Issue with Inverse Kinematics Failing During Homing – 3-Axis Robot with LinuxCNC

Category: HAL

i think you have to build a new kinematic module for 3 axis robot because Genserkins can't be used for less than 6-axis robot. Also keep attention to singularities (your 3 axis robot will have a singularity when link 2 and link 3 are straight line, this can cause kinematic fail)
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