🏗️ Allow headless Flow Meter (#22234)

Marlin/src/feature/cooler.cpp

 
 #include "../inc/MarlinConfig.h"
 
-#if HAS_COOLER
+#if EITHER(HAS_COOLER, LASER_COOLANT_FLOW_METER)
 
 #include "cooler.h"
 Cooler cooler;
 
-uint8_t Cooler::mode = 0;
-uint16_t Cooler::capacity;
-uint16_t Cooler::load;
-bool Cooler::enabled = false;
+#if HAS_COOLER
+  uint8_t Cooler::mode = 0;
+  uint16_t Cooler::capacity;
+  uint16_t Cooler::load;
+  bool Cooler::enabled = false;
+#endif
 
 #if ENABLED(LASER_COOLANT_FLOW_METER)
   bool Cooler::flowmeter = false;
   millis_t Cooler::flowmeter_next_ms; // = 0
   volatile uint16_t Cooler::flowpulses;
   float Cooler::flowrate;
+  #if ENABLED(FLOWMETER_SAFETY)
+    bool Cooler::flowsafety_enabled = true;
+    bool Cooler::flowfault = false;
+  #endif
 #endif
 
-#if ENABLED(FLOWMETER_SAFETY)
-  bool Cooler::flowsafety_enabled = true;
-  bool Cooler::fault = false;
-#endif
-
-#endif // HAS_COOLER
+#endif // HAS_COOLER || LASER_COOLANT_FLOW_METER

Marlin/src/feature/cooler.h

     }
 
     #if ENABLED(FLOWMETER_SAFETY)
-      static bool fault;                // Flag that the cooler is in a fault state
-      static bool flowsafety_enabled;   // Flag to disable the cutter if flow rate is too low
+      static bool flowfault;                // Flag that the cooler is in a fault state
+      static bool flowsafety_enabled;       // Flag to disable the cutter if flow rate is too low
       static void flowsafety_toggle()   { flowsafety_enabled = !flowsafety_enabled; }
       static bool check_flow_too_low() {
         const bool too_low = flowsafety_enabled && flowrate < (FLOWMETER_MIN_LITERS_PER_MINUTE);
-        if (too_low) fault = true;
+        flowfault =  too_low;
         return too_low;
       }
     #endif

Marlin/src/gcode/gcode.cpp

   #endif
 
   #if ENABLED(FLOWMETER_SAFETY)
-    if (cooler.fault) {
+    if (cooler.flowfault) {
       SERIAL_ECHO_MSG(STR_FLOWMETER_FAULT);
       return;
     }

Marlin/src/module/temperature.cpp

     #if ENABLED(FLOWMETER_SAFETY)
       if (cutter.enabled() && cooler.check_flow_too_low()) {
         cutter.disable();
-        ui.flow_fault();
+        TERN_(HAS_DISPLAY, ui.flow_fault());
       }
     #endif
   #endif

ini/features.ini

 HAS_MEDIA_SUBCALLS                     = src_filter=+<src/gcode/sd/M32.cpp>
 GCODE_REPEAT_MARKERS                   = src_filter=+<src/feature/repeat.cpp> +<src/gcode/sd/M808.cpp>
 HAS_EXTRUDERS                          = src_filter=+<src/gcode/units/M82_M83.cpp> +<src/gcode/temp/M104_M109.cpp> +<src/gcode/config/M221.cpp>
-HAS_COOLER                             = src_filter=+<src/feature/cooler.cpp> +<src/gcode/temp/M143_M193.cpp>
+HAS_COOLER                             = src_filter=+<src/gcode/temp/M143_M193.cpp>
+HAS_COOLER|LASER_COOLANT_FLOW_METER    = src_filter=+<src/feature/cooler.cpp>
 AUTO_REPORT_TEMPERATURES               = src_filter=+<src/gcode/temp/M155.cpp>
 INCH_MODE_SUPPORT                      = src_filter=+<src/gcode/units/G20_G21.cpp>
 TEMPERATURE_UNITS_SUPPORT              = src_filter=+<src/gcode/units/M149.cpp>