Allow UBL to build without a probe

.travis.yml

@@ -73,11 +73,17 @@ script:
   - opt_set ABL_GRID_POINTS_Y 16
   - build_marlin_pio ${TRAVIS_BUILD_DIR} ${TEST_PLATFORM}
   #
-  # Test a simple build of AUTO_BED_LEVELING_UBL
+  # Test a probeless build of AUTO_BED_LEVELING_UBL
   #
   - restore_configs
-  - opt_enable AUTO_BED_LEVELING_UBL UBL_G26_MESH_EDITING ENABLE_LEVELING_FADE_HEIGHT BLTOUCH EEPROM_SETTINGS G3D_PANEL
+  - opt_enable AUTO_BED_LEVELING_UBL UBL_G26_MESH_EDITING ENABLE_LEVELING_FADE_HEIGHT EEPROM_SETTINGS G3D_PANEL
-  - opt_enable_adv CUSTOM_USER_MENUS I2C_POSITION_ENCODERS BABYSTEPPING BABYSTEP_ZPROBE_OFFSET
+  - opt_enable_adv CUSTOM_USER_MENUS I2C_POSITION_ENCODERS BABYSTEPPING
+  - build_marlin_pio ${TRAVIS_BUILD_DIR} ${TEST_PLATFORM}
+  #
+  # ...and with a probe
+  #
+  - opt_enable BLTOUCH
+  - opt_enable_adv BABYSTEP_ZPROBE_OFFSET
   - build_marlin_pio ${TRAVIS_BUILD_DIR} ${TEST_PLATFORM}
   #
   # Test a Sled Z Probe

Marlin/src/feature/bedlevel/ubl/G26_Mesh_Validation_Tool.cpp

@@ -135,17 +135,6 @@
   extern char lcd_status_message[];
 #endif
 
-// Remove this if all is well with Teensy compile:
-#if 0
-#if AVR_AT90USB1286_FAMILY  // Teensyduino & Printrboard IDE extensions have compile errors without this
-  inline void sync_plan_position_e() { planner.set_e_position_mm(current_position[E_AXIS]); }
-  inline void set_current_to_destination() { COPY(current_position, destination); }
-#else
-  extern void sync_plan_position_e();
-  extern void set_current_to_destination();
-#endif
-#endif
-
 #if ENABLED(NEWPANEL)
   void lcd_setstatusPGM(const char* const message, const int8_t level);
   void chirp_at_user();

Marlin/src/feature/bedlevel/ubl/ubl.h

@@ -85,13 +85,16 @@ class unified_bed_leveling {
                   g29_phase_value,
                   g29_repetition_cnt,
                   g29_storage_slot,
-                  g29_map_type,
+                  g29_map_type;
-                  g29_grid_size;
     static bool   g29_c_flag, g29_x_flag, g29_y_flag;
     static float  g29_x_pos, g29_y_pos,
                   g29_card_thickness,
                   g29_constant;
 
+    #if HAS_BED_PROBE
+      static int  g29_grid_size;
+    #endif
+
     #if ENABLED(UBL_G26_MESH_VALIDATION)
       static float   g26_extrusion_multiplier,
                      g26_retraction_multiplier,

Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp

@@ -65,8 +65,7 @@
          unified_bed_leveling::g29_phase_value,
          unified_bed_leveling::g29_repetition_cnt,
          unified_bed_leveling::g29_storage_slot = 0,
-         unified_bed_leveling::g29_map_type,
+         unified_bed_leveling::g29_map_type;
-         unified_bed_leveling::g29_grid_size;
   bool   unified_bed_leveling::g29_c_flag,
          unified_bed_leveling::g29_x_flag,
          unified_bed_leveling::g29_y_flag;
@@ -75,6 +74,10 @@
          unified_bed_leveling::g29_card_thickness = 0.0,
          unified_bed_leveling::g29_constant = 0.0;
 
+  #if HAS_BED_PROBE
+    int  unified_bed_leveling::g29_grid_size;
+  #endif
+
   /**
    *   G29: Unified Bed Leveling by Roxy
    *
@@ -310,6 +313,8 @@
       return;
     }
 
+    if (g29_parameter_parsing()) return; // abort if parsing the simple parameters causes a problem,
+
     // Check for commands that require the printer to be homed
     if (axis_unhomed_error()) {
       const int8_t p_val = parser.intval('P', -1);
@@ -317,8 +322,6 @@
         gcode.home_all_axes();
     }
 
-    if (g29_parameter_parsing()) return; // abort if parsing the simple parameters causes a problem,
-
     // Invalidate Mesh Points. This command is a little bit asymmetrical because
     // it directly specifies the repetition count and does not use the 'R' parameter.
     if (parser.seen('I')) {
@@ -381,6 +384,8 @@
       }
     }
 
+    #if HAS_BED_PROBE
+
       if (parser.seen('J')) {
         if (g29_grid_size) {  // if not 0 it is a normal n x n grid being probed
           save_ubl_active_state_and_disable();
@@ -416,6 +421,8 @@
         }
       }
 
+    #endif // HAS_BED_PROBE
+
     if (parser.seen('P')) {
       if (WITHIN(g29_phase_value, 0, 1) && state.storage_slot == -1) {
         state.storage_slot = 0;
@@ -431,6 +438,8 @@
           SERIAL_PROTOCOLLNPGM("Mesh zeroed.");
           break;
 
+        #if HAS_BED_PROBE
+
           case 1:
             //
             // Invalidate Entire Mesh and Automatically Probe Mesh in areas that can be reached by the probe
@@ -449,6 +458,8 @@
                               parser.seen('T'), parser.seen('E'), parser.seen('U'));
             break;
 
+        #endif
+
         case 2: {
           #if ENABLED(NEWPANEL)
             //
@@ -776,6 +787,8 @@
           z_values[x][y] += g29_constant;
   }
 
+  #if HAS_BED_PROBE
+
     /**
      * Probe all invalidated locations of the mesh that can be reached by the probe.
      * This attempts to fill in locations closest to the nozzle's start location first.
@@ -930,7 +943,10 @@
       }
     }
 
+  #endif // HAS_BED_PROBE
+
   #if ENABLED(NEWPANEL)
+
     float unified_bed_leveling::measure_point_with_encoder() {
 
       while (ubl_lcd_clicked()) delay(50);  // wait for user to release encoder wheel
@@ -1080,7 +1096,8 @@
       do_blocking_move_to_z(Z_CLEARANCE_DEPLOY_PROBE);
       do_blocking_move_to_xy(lx, ly);
     }
-  #endif
+
+  #endif // NEWPANEL
 
   bool unified_bed_leveling::g29_parameter_parsing() {
     bool err_flag = false;
@@ -1114,19 +1131,34 @@
     }
 
     if (parser.seen('P')) {
-      g29_phase_value = parser.value_int();
+      const int pv = parser.value_int();
+      #if !HAS_BED_PROBE
+        if (pv == 1) {
+          SERIAL_PROTOCOLLNPGM("G29 P1 requires a probe.\n");
+          err_flag = true;
+        }
+        else
+      #endif
+        {
+          g29_phase_value = pv;
            if (!WITHIN(g29_phase_value, 0, 6)) {
              SERIAL_PROTOCOLLNPGM("?(P)hase value invalid (0-6).\n");
              err_flag = true;
            }
          }
+    }
 
     if (parser.seen('J')) {
+      #if HAS_BED_PROBE
         g29_grid_size = parser.has_value() ? parser.value_int() : 0;
         if (g29_grid_size && !WITHIN(g29_grid_size, 2, 9)) {
           SERIAL_PROTOCOLLNPGM("?Invalid grid size (J) specified (2-9).\n");
           err_flag = true;
         }
+      #else
+        SERIAL_PROTOCOLLNPGM("G29 J action requires a probe.\n");
+        err_flag = true;
+      #endif
     }
 
     if (g29_x_flag != g29_y_flag) {
@@ -1624,6 +1656,8 @@
     }
   }
 
+  #if HAS_BED_PROBE
+
     void unified_bed_leveling::tilt_mesh_based_on_probed_grid(const bool do_ubl_mesh_map) {
       constexpr int16_t x_min = max(MIN_PROBE_X, UBL_MESH_MIN_X),
                         x_max = min(MAX_PROBE_X, UBL_MESH_MAX_X),
@@ -1769,6 +1803,8 @@
       if (do_ubl_mesh_map) display_map(g29_map_type);
     }
 
+  #endif // HAS_BED_PROBE
+
   #if ENABLED(UBL_G29_P31)
     void unified_bed_leveling::smart_fill_wlsf(const float &weight_factor) {
 

Marlin/src/inc/SanityCheck.h

@@ -647,9 +647,7 @@ static_assert(1 >= 0
   /**
    * Require some kind of probe for bed leveling and probe testing
    */
-  #if ENABLED(AUTO_BED_LEVELING_UBL)
+  #if HAS_ABL && DISABLED(AUTO_BED_LEVELING_UBL)
-    #error "Unified Bed Leveling requires a probe: FIX_MOUNTED_PROBE, BLTOUCH, SOLENOID_PROBE, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, or Z Servo."
-  #elif HAS_ABL
     #error "Auto Bed Leveling requires one of these: PROBE_MANUALLY, FIX_MOUNTED_PROBE, BLTOUCH, SOLENOID_PROBE, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, or a Z Servo."
   #endif