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Add M428 to set home_offset logically

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This commit is contained in:
Scott Lahteine
2015-04-29 18:26:16 -07:00
parent 2610b8d047
commit d065d37822
4 changed files with 37 additions and 11 deletions
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30
Marlin/Marlin_main.cpp
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@ -189,6 +189,7 @@
* M410 - Quickstop. Abort all the planned moves
* M420 - Enable/Disable Mesh Leveling (with current values) S1=enable S0=disable
* M421 - Set a single Z coordinate in the Mesh Leveling grid. X<mm> Y<mm> Z<mm>
* M428 - Set the home_offset logically based on the current_position
* M500 - Store parameters in EEPROM
* M501 - Read parameters from EEPROM (if you need reset them after you changed them temporarily).
* M502 - Revert to the default "factory settings". You still need to store them in EEPROM afterwards if you want to.
@ -4504,6 +4505,31 @@ inline void gcode_M410() { quickStop(); }
#endif
/**
* M428: Set home_offset based on the distance between the
* current_position and the nearest "reference position."
* If an axis is past center the 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.
*
* Use M206 to set these values directly.
*/
inline void gcode_M428() {
for (int8_t i = X_AXIS; i <= Z_AXIS; i++) {
float base = (current_position[i] > (min_pos[i] + max_pos[i]) / 2) ? base_home_pos(i) : 0,
diff = current_position[i] - base;
if (diff > -20 && diff < 20) {
home_offset[i] -= diff;
current_position[i] = base;
}
else {
SERIAL_ERROR_START;
SERIAL_ERRORLNPGM(MSG_ERR_M428_TOO_FAR);
}
}
sync_plan_position();
}
/**
* M500: Store settings in EEPROM
*/
@ -5353,6 +5379,10 @@ void process_commands() {
break;
#endif
case 428: // M428 Apply current_position to home_offset
gcode_M428();
break;
case 500: // M500 Store settings in EEPROM
gcode_M500();
break;