Implemented https://github.com/prusa3d/Slic3r/issues/199

by merging the work by @lordofhyphens done on https://github.com/alexrj/Slic3r/issues/3268

lib/Slic3r/GUI/Tab.pm

@@ -1159,7 +1159,7 @@ sub build {
         serial_port serial_speed
         octoprint_host octoprint_apikey
         use_firmware_retraction
-        use_volumetric_e variable_layer_height
+        use_volumetric_e set_and_wait_temperatures variable_layer_height
         single_extruder_multi_material start_gcode end_gcode before_layer_gcode layer_gcode toolchange_gcode
         nozzle_diameter extruder_offset
         retract_length retract_lift retract_speed deretract_speed retract_before_wipe retract_restart_extra retract_before_travel retract_layer_change wipe
@@ -1366,6 +1366,7 @@ sub build {
             $optgroup->append_single_option_line('use_firmware_retraction');
             $optgroup->append_single_option_line('use_volumetric_e');
             $optgroup->append_single_option_line('variable_layer_height');
+            $optgroup->append_single_option_line('set_and_wait_temperatures');
         }
     }
     {

slic3r.pl

@@ -304,6 +304,7 @@ $j
     --use-relative-e-distances Enable this to get relative E values (default: no)
     --use-firmware-retraction  Enable firmware-controlled retraction using G10/G11 (default: no)
     --use-volumetric-e  Express E in cubic millimeters and prepend M200 (default: no)
+    --set-and-wait-temperatures Use M190 instead of M140 for temperature changes past the first (default: no)
     --gcode-comments    Make G-code verbose by adding comments (default: no)
     
   Filament options:

xs/src/libslic3r/GCode.cpp

@@ -398,7 +398,7 @@ bool GCode::do_export(FILE *file, Print &print)
     if (print.config.first_layer_bed_temperature.value > 0 &&
         boost::ifind_first(print.config.start_gcode.value, std::string("M140")).empty() &&
         boost::ifind_first(print.config.start_gcode.value, std::string("M190")).empty())
-        write(file, m_writer.set_bed_temperature(print.config.first_layer_bed_temperature.value, true));
+        write(file, m_writer.set_bed_temperature(print.config.first_layer_bed_temperature.value, print.config.set_and_wait_temperatures.value));
 
     // Get optimal tool ordering to minimize tool switches of a multi-exruder print.
     // For a print by objects, find the 1st printing object.

xs/src/libslic3r/PrintConfig.cpp

@@ -1498,6 +1498,12 @@ PrintConfigDef::PrintConfigDef()
     def->cli = "use-volumetric-e!";
     def->default_value = new ConfigOptionBool(false);
 
+    def = this->add("set_and_wait_temperatures", coBool);
+    def->label = "Use Set and Wait for changing bed temperatures";
+    def->tooltip = "Check this to change gcode for temperature changes from not waiting (usually M140) to waiting (usually M190). Only necessary if you have a slow-to-heat bed and the first layer bed temp is lower than the other layers.";
+    def->cli = "set-and-wait-temperatures!";
+    def->default_value = new ConfigOptionBool(false);
+
     def = this->add("variable_layer_height", coBool);
     def->label = "Enable variable layer height feature";
     def->tooltip = "Some printers or printer setups may have difficulties printing with a variable layer height. Enabled by default.";

xs/src/libslic3r/PrintConfig.hpp

@@ -350,6 +350,7 @@ public:
     ConfigOptionBool                use_firmware_retraction;
     ConfigOptionBool                use_relative_e_distances;
     ConfigOptionBool                use_volumetric_e;
+    ConfigOptionBool                set_and_wait_temperatures;
     ConfigOptionBool                variable_layer_height;
     
     GCodeConfig(bool initialize = true) : StaticPrintConfig() {
@@ -392,6 +393,7 @@ public:
         OPT_PTR(use_firmware_retraction);
         OPT_PTR(use_relative_e_distances);
         OPT_PTR(use_volumetric_e);
+        OPT_PTR(set_and_wait_temperatures);
         OPT_PTR(variable_layer_height);
         return NULL;
     };