Nonlinear Extrusion Control

MarlinFirmware/Marlin#26127

Author: thinkyhead

_gcode/M086.md

@@ -10,7 +10,7 @@ eeprom: true
 codes: [ M86 ]
 related: [ M87 ]
 requires: HOTEND_IDLE_TIMEOUT
-since: 2.1.3
+since: 2.2.0
 
 parameters:
   -

_gcode/M087.md

@@ -10,7 +10,7 @@ eeprom: true
 codes: [ M87 ]
 related: [ M86 ]
 requires: HOTEND_IDLE_TIMEOUT
-since: 2.1.3
+since: 2.2.0
 
 example:
   -

_gcode/M493.md

@@ -4,7 +4,7 @@ title: Fixed-Time Motion
 brief: Enable/disable and configure Fixed-Time Motion, Linear Advance, and Input Shaping
 author: thinkyhead
 
-since: 2.1.3
+since: 2.2.0
 requires: FT_MOTION
 group: motion
 experimental: true

_gcode/M592.md

@@ -0,0 +1,47 @@
+---
+tag: m0592
+title: Nonlinear Extrusion Control
+brief: Get or set Nonlinear Extrusion parameters
+author: abortz, thinkyhead
+
+since: 2.2.0
+requires: NONLINEAR_EXTRUSION
+group: motion
+
+codes: [ M592 ]
+
+parameters:
+-
+  tag: A
+  optional: true
+  description: Set the Linear coefficient (Default 0.0)
+  values:
+  -
+    type: float
+    tag: coeff
+-
+  tag: B
+  optional: true
+  description: Set the Quadratic coefficient (Default 0.0)
+  values:
+  -
+    type: float
+    tag: coeff
+-
+  tag: C
+  optional: true
+  description: Set the Constant coefficient (Default 1.0)
+  values:
+  -
+    type: float
+    tag: coeff
+
+examples:
+-
+  pre: Set Linear, Quadratic coefficients to 0.2, 0.3
+  code: M592 A0.2 B0.3
+
+---
+Get or set nonlinear extrusion parameters.
+
+Nonlinear Extrusion adjusts the amount of extrusion based on the instantaneous velocity of extrusion, as a multiplier. The amount of extrusion is multiplied by `max(C, C + A*v + B*v^2)` where `v` is extruder velocity in mm/s. Only adjusts forward extrusions, since those are the ones affected by backpressure.