From cff2201629ecebbf6f7f80cdea9a83bb00842b77 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <thinkyhead@users.noreply.github.com>
Date: Wed, 27 Jun 2018 04:19:05 -0400
Subject: [PATCH] Poll all endstops, even when stationary (#11125)

Co-Authored-By: ejtagle <ejtagle@hotmail.com>
---
 Marlin/SanityCheck.h |   2 +
 Marlin/endstops.cpp  | 179 +++++++++++++++++++------------------------
 2 files changed, 81 insertions(+), 100 deletions(-)

diff --git a/Marlin/SanityCheck.h b/Marlin/SanityCheck.h
index f474487da13..1b9832ebc6e 100644
--- a/Marlin/SanityCheck.h
+++ b/Marlin/SanityCheck.h
@@ -1494,6 +1494,8 @@ static_assert(X_MAX_LENGTH >= X_BED_SIZE && Y_MAX_LENGTH >= Y_BED_SIZE,
       #error "SENSORLESS_HOMING requires Z_MIN_ENDSTOP_INVERTING and ENDSTOPPULLUP_ZMIN when homing to Z_MIN."
     #elif Z_SENSORLESS && Z_HOME_DIR ==  1 && (DISABLED(Z_MAX_ENDSTOP_INVERTING) || DISABLED(ENDSTOPPULLUP_ZMAX))
       #error "SENSORLESS_HOMING requires Z_MAX_ENDSTOP_INVERTING and ENDSTOPPULLUP_ZMAX when homing to Z_MAX."
+    #elif ENABLED(ENDSTOP_NOISE_FILTER)
+      #error "SENSORLESS_HOMING is incompatible with ENDSTOP_NOISE_FILTER."
     #endif
   #endif
 
diff --git a/Marlin/endstops.cpp b/Marlin/endstops.cpp
index 959a79bed92..25e891508b7 100644
--- a/Marlin/endstops.cpp
+++ b/Marlin/endstops.cpp
@@ -35,12 +35,6 @@
   #include "endstop_interrupts.h"
 #endif
 
-#if HAS_BED_PROBE
-  #define ENDSTOPS_ENABLED  (enabled || z_probe_enabled)
-#else
-  #define ENDSTOPS_ENABLED  enabled
-#endif
-
 Endstops endstops;
 
 // public:
@@ -408,109 +402,94 @@ void Endstops::update() {
   #endif
 
   /**
-   * Check and update endstops according to conditions
+   * Check and update endstops
    */
-  if (stepper.axis_is_moving(X_AXIS)) {
-    if (stepper.motor_direction(X_AXIS_HEAD)) { // -direction
-      #if HAS_X_MIN
-        #if ENABLED(X_DUAL_ENDSTOPS) && X_HOME_DIR < 0
-          UPDATE_ENDSTOP_BIT(X, MIN);
-          #if HAS_X2_MIN
-            UPDATE_ENDSTOP_BIT(X2, MIN);
-          #else
-            COPY_LIVE_STATE(X_MIN, X2_MIN);
-          #endif
-        #else
-          if (X_MIN_TEST) UPDATE_ENDSTOP_BIT(X, MIN);
-        #endif
+  #if HAS_X_MIN
+    #if ENABLED(X_DUAL_ENDSTOPS) && X_HOME_DIR < 0
+      UPDATE_ENDSTOP_BIT(X, MIN);
+      #if HAS_X2_MIN
+        UPDATE_ENDSTOP_BIT(X2, MIN);
+      #else
+        COPY_LIVE_STATE(X_MIN, X2_MIN);
       #endif
-    }
-    else { // +direction
-      #if HAS_X_MAX
-        #if ENABLED(X_DUAL_ENDSTOPS) && X_HOME_DIR > 0
-          UPDATE_ENDSTOP_BIT(X, MAX);
-          #if HAS_X2_MAX
-            UPDATE_ENDSTOP_BIT(X2, MAX);
-          #else
-            COPY_LIVE_STATE(X_MAX, X2_MAX);
-          #endif
-        #else
-          if (X_MAX_TEST) UPDATE_ENDSTOP_BIT(X, MAX);
-        #endif
-      #endif
-    }
-  }
+    #else
+      UPDATE_ENDSTOP_BIT(X, MIN);
+    #endif
+  #endif
 
-  if (stepper.axis_is_moving(Y_AXIS)) {
-    if (stepper.motor_direction(Y_AXIS_HEAD)) { // -direction
-      #if HAS_Y_MIN && Y_HOME_DIR < 0
-        #if ENABLED(Y_DUAL_ENDSTOPS)
-          UPDATE_ENDSTOP_BIT(Y, MIN);
-          #if HAS_Y2_MIN
-            UPDATE_ENDSTOP_BIT(Y2, MIN);
-          #else
-            COPY_LIVE_STATE(Y_MIN, Y2_MIN);
-          #endif
-        #else
-          UPDATE_ENDSTOP_BIT(Y, MIN);
-        #endif
+  #if HAS_X_MAX
+    #if ENABLED(X_DUAL_ENDSTOPS) && X_HOME_DIR > 0
+      UPDATE_ENDSTOP_BIT(X, MAX);
+      #if HAS_X2_MAX
+        UPDATE_ENDSTOP_BIT(X2, MAX);
+      #else
+        COPY_LIVE_STATE(X_MAX, X2_MAX);
       #endif
-    }
-    else { // +direction
-      #if HAS_Y_MAX && Y_HOME_DIR > 0
-        #if ENABLED(Y_DUAL_ENDSTOPS)
-          UPDATE_ENDSTOP_BIT(Y, MAX);
-          #if HAS_Y2_MAX
-            UPDATE_ENDSTOP_BIT(Y2, MAX);
-          #else
-            COPY_LIVE_STATE(Y_MAX, Y2_MAX);
-          #endif
-        #else
-          UPDATE_ENDSTOP_BIT(Y, MAX);
-        #endif
-      #endif
-    }
-  }
+    #else
+      UPDATE_ENDSTOP_BIT(X, MAX);
+    #endif
+  #endif
 
-  if (stepper.axis_is_moving(Z_AXIS)) {
-    if (stepper.motor_direction(Z_AXIS_HEAD)) { // Z -direction. Gantry down, bed up.
-      #if HAS_Z_MIN
-        #if ENABLED(Z_DUAL_ENDSTOPS) && Z_HOME_DIR < 0
-          UPDATE_ENDSTOP_BIT(Z, MIN);
-          #if HAS_Z2_MIN
-            UPDATE_ENDSTOP_BIT(Z2, MIN);
-          #else
-            COPY_LIVE_STATE(Z_MIN, Z2_MIN);
-          #endif
-        #elif ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN)
-          if (z_probe_enabled) UPDATE_ENDSTOP_BIT(Z, MIN);
-        #elif Z_HOME_DIR < 0
-          UPDATE_ENDSTOP_BIT(Z, MIN);
-        #endif
+  #if HAS_Y_MIN && Y_HOME_DIR < 0
+    #if ENABLED(Y_DUAL_ENDSTOPS)
+      UPDATE_ENDSTOP_BIT(Y, MIN);
+      #if HAS_Y2_MIN
+        UPDATE_ENDSTOP_BIT(Y2, MIN);
+      #else
+        COPY_LIVE_STATE(Y_MIN, Y2_MIN);
       #endif
+    #else
+      UPDATE_ENDSTOP_BIT(Y, MIN);
+    #endif
+  #endif
 
-      // When closing the gap check the enabled probe
-      #if ENABLED(Z_MIN_PROBE_ENDSTOP)
-        if (z_probe_enabled) UPDATE_ENDSTOP_BIT(Z, MIN_PROBE);
+  #if HAS_Y_MAX && Y_HOME_DIR > 0
+    #if ENABLED(Y_DUAL_ENDSTOPS)
+      UPDATE_ENDSTOP_BIT(Y, MAX);
+      #if HAS_Y2_MAX
+        UPDATE_ENDSTOP_BIT(Y2, MAX);
+      #else
+        COPY_LIVE_STATE(Y_MAX, Y2_MAX);
       #endif
-    }
-    else { // Z +direction. Gantry up, bed down.
-      #if HAS_Z_MAX && Z_HOME_DIR > 0
-        // Check both Z dual endstops
-        #if ENABLED(Z_DUAL_ENDSTOPS)
-          UPDATE_ENDSTOP_BIT(Z, MAX);
-          #if HAS_Z2_MAX
-            UPDATE_ENDSTOP_BIT(Z2, MAX);
-          #else
-            COPY_LIVE_STATE(Z_MAX, Z2_MAX);
-          #endif
-        #elif DISABLED(Z_MIN_PROBE_ENDSTOP) || Z_MAX_PIN != Z_MIN_PROBE_PIN
-          // If this pin isn't the bed probe it's the Z endstop
-          UPDATE_ENDSTOP_BIT(Z, MAX);
-        #endif
+    #else
+      UPDATE_ENDSTOP_BIT(Y, MAX);
+    #endif
+  #endif
+
+  #if HAS_Z_MIN
+    #if ENABLED(Z_DUAL_ENDSTOPS) && Z_HOME_DIR < 0
+      UPDATE_ENDSTOP_BIT(Z, MIN);
+      #if HAS_Z2_MIN
+        UPDATE_ENDSTOP_BIT(Z2, MIN);
+      #else
+        COPY_LIVE_STATE(Z_MIN, Z2_MIN);
       #endif
-    }
-  }
+    #elif ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN)
+      UPDATE_ENDSTOP_BIT(Z, MIN);
+    #elif Z_HOME_DIR < 0
+      UPDATE_ENDSTOP_BIT(Z, MIN);
+    #endif
+  #endif
+
+  // When closing the gap check the enabled probe
+  #if ENABLED(Z_MIN_PROBE_ENDSTOP)
+    UPDATE_ENDSTOP_BIT(Z, MIN_PROBE);
+  #endif
+
+  #if HAS_Z_MAX && Z_HOME_DIR > 0
+    // Check both Z dual endstops
+    #if ENABLED(Z_DUAL_ENDSTOPS)
+      UPDATE_ENDSTOP_BIT(Z, MAX);
+      #if HAS_Z2_MAX
+        UPDATE_ENDSTOP_BIT(Z2, MAX);
+      #else
+        COPY_LIVE_STATE(Z_MAX, Z2_MAX);
+      #endif
+    #elif DISABLED(Z_MIN_PROBE_ENDSTOP) || Z_MAX_PIN != Z_MIN_PROBE_PIN
+      // If this pin isn't the bed probe it's the Z endstop
+      UPDATE_ENDSTOP_BIT(Z, MAX);
+    #endif
+  #endif
 
   #if ENABLED(ENDSTOP_NOISE_FILTER)
     /**