G92 gcode about grbl

[simen]

Good! I'll be happy to integrate your improvement.

[Highlander01]

Code I did is basically the same as MC_Line except I never call st_buffer_line

---

    case 92: gc.motion_mode = MOTION_MODE_REPOSITION; break;

---

switch (gc.motion_mode) {
case MOTION_MODE_CANCEL: break;
case MOTION_MODE_REPOSITION:
mc_reposition(target[X_AXIS], target[Y_AXIS], target[Z_AXIS],
(gc.inverse_feed_rate_mode) ? inverse_feed_rate : gc.feed_rate, gc.inverse_feed_rate_mode);
break;

---

void mc_reposition(double x, double y, double z, float feed_rate, int invert_feed_rate)
{
uint8_t axis; // loop variable
int32_t target[3]; // The target position in absolute steps
int32_t steps[3]; // The target line in relative steps

target[X_AXIS] = lround(x_settings.steps_per_mm[0]);
target[Y_AXIS] = lround(y_settings.steps_per_mm[1]);
target[Z_AXIS] = lround(z*settings.steps_per_mm[2]);

for(axis = X_AXIS; axis <= Z_AXIS; axis++) {
steps[axis] = target[axis]-position[axis];
}
memcpy(position, target, sizeof(target)); // position[] = target[]
}

---

[Highlander01]

I now have my first finished basic Python HMI/GUI code and OpenGL graphics and modified version of Grbl with G92 that lets me do repositioning and zeroing at:
http://github.com/Highlander01/Highlander01HMI

In "gcode" file I changed from version above and now do the following.
case 92: next_action = NEXT_ACTION_REPOSITION; break;

This ends up running a routine in the "motion_control" file:
case NEXT_ACTION_REPOSITION: mc_reposition(target[X_AXIS], ......

[simen]

In the 'edge' branch I have implemented G92 according to your suggestions. Sorry it took so long!

[Highlander01]

Hello! good to see you added G92! I am finally get back to using Grbl and doing some cutting again. I have been out taking a break/building a 2nd/bigger cnc.