From fc2f3cdf4079596a84f0e8ac88e9f8dfc295f03f Mon Sep 17 00:00:00 2001
From: Scott Lahteine <thinkyhead@users.noreply.github.com>
Date: Fri, 4 Nov 2022 20:10:59 -0500
Subject: [PATCH] =?UTF-8?q?=F0=9F=A9=B9=20MAX=20Thermocouple=20followup?=
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Followup to #24898
---
 Marlin/src/inc/Conditionals_LCD.h |  7 +++++--
 Marlin/src/module/temperature.cpp | 14 ++++++++------
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/Marlin/src/inc/Conditionals_LCD.h b/Marlin/src/inc/Conditionals_LCD.h
index b21eca30b2..c1b43d2fc0 100644
--- a/Marlin/src/inc/Conditionals_LCD.h
+++ b/Marlin/src/inc/Conditionals_LCD.h
@@ -1020,8 +1020,11 @@
 #endif
 
 // Helper macros for extruder and hotend arrays
-#define EXTRUDER_LOOP() for (int8_t e = 0; e < EXTRUDERS; e++)
-#define HOTEND_LOOP() for (int8_t e = 0; e < HOTENDS; e++)
+#define _EXTRUDER_LOOP(E) for (int8_t E = 0; E < EXTRUDERS; E++)
+#define EXTRUDER_LOOP() _EXTRUDER_LOOP(e)
+#define _HOTEND_LOOP(H) for (int8_t H = 0; H < HOTENDS; H++)
+#define HOTEND_LOOP() _HOTEND_LOOP(e)
+
 #define ARRAY_BY_EXTRUDERS(V...) ARRAY_N(EXTRUDERS, V)
 #define ARRAY_BY_EXTRUDERS1(v1) ARRAY_N_1(EXTRUDERS, v1)
 #define ARRAY_BY_HOTENDS(V...) ARRAY_N(HOTENDS, V)
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index 8843582f4e..37996a80ea 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -2374,7 +2374,7 @@ void Temperature::updateTemperaturesFromRawValues() {
   TERN_(HAS_POWER_MONITOR,     power_monitor.capture_values());
 
   #if HAS_HOTEND
-    static constexpr int8_t temp_dir[] = {
+    static constexpr int8_t temp_dir[HOTENDS] = {
       #if TEMP_SENSOR_IS_ANY_MAX_TC(0)
         0
       #else
@@ -2386,19 +2386,21 @@ void Temperature::updateTemperaturesFromRawValues() {
         #else
           , TEMPDIR(1)
         #endif
+      #endif
+      #if HOTENDS > 2
         #if TEMP_SENSOR_IS_ANY_MAX_TC(2)
           , 0
         #else
           , TEMPDIR(2)
         #endif
-        #if HOTENDS > 3
-          #define _TEMPDIR(N) , TEMPDIR(N)
-          REPEAT_S(3, HOTENDS, _TEMPDIR)
-        #endif
+      #endif
+      #if HOTENDS > 3
+        #define _TEMPDIR(N) , TEMPDIR(N)
+        REPEAT_S(3, HOTENDS, _TEMPDIR)
       #endif
     };
 
-    LOOP_L_N(e, COUNT(temp_dir)) {
+    HOTEND_LOOP() {
       const raw_adc_t r = temp_hotend[e].getraw();
       const bool neg = temp_dir[e] < 0, pos = temp_dir[e] > 0;
       if ((neg && r < temp_range[e].raw_max) || (pos && r > temp_range[e].raw_max))