From 045ee28c50a98189ba6dd81f4589d0d171d43218 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Wed, 21 Mar 2018 05:15:25 -0500
Subject: [PATCH] Tweaks to M915

---
 Marlin/src/gcode/feature/trinamic/M911-M915.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Marlin/src/gcode/feature/trinamic/M911-M915.cpp b/Marlin/src/gcode/feature/trinamic/M911-M915.cpp
index fa02aaadff..c86b59fa6c 100644
--- a/Marlin/src/gcode/feature/trinamic/M911-M915.cpp
+++ b/Marlin/src/gcode/feature/trinamic/M911-M915.cpp
@@ -258,8 +258,8 @@ void GcodeSuite::M912() {
  */
 #if ENABLED(TMC_Z_CALIBRATION)
   void GcodeSuite::M915() {
-    uint16_t _rms = parser.seenval('S') ? parser.value_int() : CALIBRATION_CURRENT;
-    uint16_t _z = parser.seenval('Z') ? parser.value_int() : CALIBRATION_EXTRA_HEIGHT;
+    const uint16_t _rms = parser.seenval('S') ? parser.value_int() : CALIBRATION_CURRENT,
+                   _z = parser.seenval('Z') ? parser.value_linear_units() : CALIBRATION_EXTRA_HEIGHT;
 
     if (!axis_known_position[Z_AXIS]) {
       SERIAL_ECHOLNPGM("\nPlease home Z axis first");
@@ -267,11 +267,11 @@ void GcodeSuite::M912() {
     }
 
     #if Z_IS_TRINAMIC
-      uint16_t Z_current_1 = stepperZ.getCurrent();
+      const uint16_t Z_current_1 = stepperZ.getCurrent();
       stepperZ.setCurrent(_rms, R_SENSE, HOLD_MULTIPLIER);
     #endif
     #if Z2_IS_TRINAMIC
-      uint16_t Z2_current_1 = stepperZ2.getCurrent();
+      const uint16_t Z2_current_1 = stepperZ2.getCurrent();
       stepperZ2.setCurrent(_rms, R_SENSE, HOLD_MULTIPLIER);
     #endif
 
-- 
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