🐛 Followup to TEMP_SENSOR_BOARD (#22343, #22344)

Followup to #22279

Marlin/src/inc/Conditionals_adv.h

@@ -127,7 +127,9 @@
 
 // Usurp a sensor to do redundant readings
 #if TEMP_SENSOR_REDUNDANT
-  #define REDUNDANT_TEMP_MATCH(M,N) (TEMP_SENSOR_REDUNDANT_##M == HID_##N)
+  #define _HEATER_ID(M) HID_##M
+  #define HEATER_ID(M)  _HEATER_ID(M)
+  #define REDUNDANT_TEMP_MATCH(M,N) (HEATER_ID(TEMP_SENSOR_REDUNDANT_##M) == _HEATER_ID(N))
 #else
   #define REDUNDANT_TEMP_MATCH(...) 0
 #endif

Marlin/src/inc/Conditionals_post.h

@@ -1135,6 +1135,23 @@
   #endif
 #endif
 
+#if TEMP_SENSOR_BOARD == -4
+  #define TEMP_SENSOR_BOARD_IS_AD8495 1
+#elif TEMP_SENSOR_BOARD == -3
+  #error "MAX31855 Thermocouples (-3) not supported for TEMP_SENSOR_BOARD."
+#elif TEMP_SENSOR_BOARD == -2
+  #error "MAX6675 Thermocouples (-2) not supported for TEMP_SENSOR_BOARD."
+#elif TEMP_SENSOR_BOARD == -1
+  #define TEMP_SENSOR_BOARD_IS_AD595 1
+#elif TEMP_SENSOR_BOARD > 0
+  #define TEMP_SENSOR_BOARD_IS_THERMISTOR 1
+  #if TEMP_SENSOR_BOARD == 1000
+    #define TEMP_SENSOR_BOARD_IS_CUSTOM 1
+  #elif TEMP_SENSOR_BOARD == 998 || TEMP_SENSOR_BOARD == 999
+    #define TEMP_SENSOR_BOARD_IS_DUMMY 1
+  #endif
+#endif
+
 /**
  * X_DUAL_ENDSTOPS endstop reassignment
  */

Marlin/src/module/temperature.cpp

@@ -440,7 +440,7 @@ const char str_t_thermal_runaway[] PROGMEM = STR_T_THERMAL_RUNAWAY,
   board_info_t Temperature::temp_board; // = { 0 }
   #if ENABLED(THERMAL_PROTECTION_BOARD)
     int16_t Temperature::mintemp_raw_BOARD = TEMP_SENSOR_BOARD_RAW_LO_TEMP,
-            Temperature::maxtemp_raw_BOARD = TEMP_SENSOR_COOLER_RAW_HI_TEMP;
+            Temperature::maxtemp_raw_BOARD = TEMP_SENSOR_BOARD_RAW_HI_TEMP;
   #endif
 #endif
 
@@ -951,7 +951,7 @@ void Temperature::_temp_error(const heater_id_t heater_id, PGM_P const serial_ms
     #if HAS_TEMP_REDUNDANT
       if (heater_id == H_REDUNDANT) {
         SERIAL_ECHOPGM(STR_REDUNDANT); // print redundant and cascade to print target, too.
-        real_heater_id = (heater_id_t)TEMP_SENSOR_REDUNDANT_TARGET;
+        real_heater_id = (heater_id_t)HEATER_ID(TEMP_SENSOR_REDUNDANT_TARGET);
       }
     #endif
 
@@ -1323,7 +1323,7 @@ void Temperature::manage_heater() {
   #if HAS_TEMP_REDUNDANT
     // Make sure measured temperatures are close together
     if (ABS(degRedundantTarget() - degRedundant()) > TEMP_SENSOR_REDUNDANT_MAX_DIFF)
-      _temp_error((heater_id_t)TEMP_SENSOR_REDUNDANT_TARGET, PSTR(STR_REDUNDANCY), GET_TEXT(MSG_ERR_REDUNDANT_TEMP));
+      _temp_error((heater_id_t)HEATER_ID(TEMP_SENSOR_REDUNDANT_TARGET), PSTR(STR_REDUNDANCY), GET_TEXT(MSG_ERR_REDUNDANT_TEMP));
   #endif
 
   #if HAS_AUTO_FAN
@@ -2015,7 +2015,7 @@ void Temperature::updateTemperaturesFromRawValues() {
 
   TERN_(TEMP_SENSOR_0_IS_MAX_TC, temp_hotend[0].raw = READ_MAX_TC(0));
   TERN_(TEMP_SENSOR_1_IS_MAX_TC, temp_hotend[1].raw = READ_MAX_TC(1));
-  TERN_(TEMP_SENSOR_REDUNDANT_IS_MAX_TC, temp_redundant.raw = READ_MAX_TC(TEMP_SENSOR_REDUNDANT_SOURCE));
+  TERN_(TEMP_SENSOR_REDUNDANT_IS_MAX_TC, temp_redundant.raw = READ_MAX_TC(HEATER_ID(TEMP_SENSOR_REDUNDANT_SOURCE)));
 
   #if HAS_HOTEND
     HOTEND_LOOP() temp_hotend[e].celsius = analog_to_celsius_hotend(temp_hotend[e].raw, e);
@@ -2455,9 +2455,9 @@ void Temperature::init() {
     while (analog_to_celsius_cooler(maxtemp_raw_COOLER) < COOLER_MAXTEMP) maxtemp_raw_COOLER -= TEMPDIR(COOLER) * (OVERSAMPLENR);
   #endif
 
-  #if HAS_TEMP_BOARD
-    while (analog_to_celsius_board(mintemp_raw_BOARD) > BOARD_MINTEMP) mintemp_raw_BOARD += TEMPDIR(BOARD) * (OVERSAMPLENR);
-    while (analog_to_celsius_board(maxtemp_raw_BOARD) < BOARD_MAXTEMP) maxtemp_raw_BOARD -= TEMPDIR(BOARD) * (OVERSAMPLENR);
+  #if BOTH(HAS_TEMP_BOARD, THERMAL_PROTECTION_BOARD)
+    while (analog_to_celsius_board(mintemp_raw_BOARD) < BOARD_MINTEMP) mintemp_raw_BOARD += TEMPDIR(BOARD) * (OVERSAMPLENR);
+    while (analog_to_celsius_board(maxtemp_raw_BOARD) > BOARD_MAXTEMP) maxtemp_raw_BOARD -= TEMPDIR(BOARD) * (OVERSAMPLENR);
   #endif
 
   #if HAS_TEMP_REDUNDANT
@@ -2473,7 +2473,7 @@ void Temperature::init() {
       #elif REDUNDANT_TEMP_MATCH(TARGET, BED) && HAS_TEMP_BED
         temp_bed
       #else
-        temp_hotend[TEMP_SENSOR_REDUNDANT_TARGET]
+        temp_hotend[HEATER_ID(TEMP_SENSOR_REDUNDANT_TARGET)]
       #endif
     );
   #endif

Marlin/src/module/temperature.h

@@ -815,7 +815,7 @@ class Temperature {
         static inline int16_t rawBoardTemp()    { return temp_board.raw; }
       #endif
       static inline celsius_float_t degBoard()  { return temp_board.celsius; }
-      static inline celsius_t wholeDegBoard()   { return static_cast<celsius_t>(degBoard() + 0.5f); }
+      static inline celsius_t wholeDegBoard()   { return static_cast<celsius_t>(temp_board.celsius + 0.5f); }
     #endif
 
     #if HAS_TEMP_REDUNDANT

buildroot/tests/mega2560

@@ -198,6 +198,17 @@ opt_enable REPRAP_DISCOUNT_SMART_CONTROLLER SDSUPPORT EEPROM_SETTINGS EEPROM_BOO
 
 exec_test $1 $2 "REPRAP MEGA2560 RAMPS | Laser Feature | Air Evacuation | Air Assist | Cooler | Flowmeter | 44780 LCD " "$3"
 
+#
+# Test redundant temperature sensors + MAX TC
+#
+restore_configs
+opt_set MOTHERBOARD BOARD_RAMPS_14_EFB EXTRUDERS 1 \
+        TEMP_SENSOR_0 -2 TEMP_SENSOR_REDUNDANT -2 \
+        TEMP_SENSOR_REDUNDANT_SOURCE E1 TEMP_SENSOR_REDUNDANT_TARGET E0 \
+        TEMP_0_CS_PIN 11 TEMP_1_CS_PIN 12
+
+exec_test $1 $2 "MEGA2560 RAMPS | Redundant temperature sensor | 2x MAX6675" "$3"
+
 #
 # Language files test with REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
 #