Firmware2/Marlin/src/gcode/geometry/M428.h

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/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* M428: Set home_offset based on the distance between the
* current_position and the nearest "reference point."
* If an axis is past center its endstop position
* is the reference-point. Otherwise it uses 0. This allows
* the Z offset to be set near the bed when using a max endstop.
*
* M428 can't be used more than 2cm away from 0 or an endstop.
*
* Use M206 to set these values directly.
*/
void gcode_M428() {
bool err = false;
LOOP_XYZ(i) {
if (axis_homed[i]) {
const float base = (current_position[i] > (soft_endstop_min[i] + soft_endstop_max[i]) * 0.5) ? base_home_pos((AxisEnum)i) : 0,
diff = base - RAW_POSITION(current_position[i], i);
if (WITHIN(diff, -20, 20)) {
set_home_offset((AxisEnum)i, diff);
}
else {
SERIAL_ERROR_START();
SERIAL_ERRORLNPGM(MSG_ERR_M428_TOO_FAR);
LCD_ALERTMESSAGEPGM("Err: Too far!");
BUZZ(200, 40);
err = true;
break;
}
}
}
if (!err) {
SYNC_PLAN_POSITION_KINEMATIC();
report_current_position();
LCD_MESSAGEPGM(MSG_HOME_OFFSETS_APPLIED);
BUZZ(100, 659);
BUZZ(100, 698);
}
}