/** * Marlin 3D Printer Firmware * Copyright (C) 2016, 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] * * Based on Sprinter and grbl. * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . * */ #ifndef UNIFIED_BED_LEVELING_H #define UNIFIED_BED_LEVELING_H #include "MarlinConfig.h" #if ENABLED(AUTO_BED_LEVELING_UBL) #include "Marlin.h" #include "planner.h" #include "math.h" #include "vector_3.h" #include "configuration_store.h" #define UBL_VERSION "1.01" #define UBL_OK false #define UBL_ERR true #define USE_NOZZLE_AS_REFERENCE 0 #define USE_PROBE_AS_REFERENCE 1 typedef struct { int8_t x_index, y_index; float distance; // When populated, the distance from the search location } mesh_index_pair; // ubl.cpp void bit_clear(uint16_t bits[16], uint8_t x, uint8_t y); void bit_set(uint16_t bits[16], uint8_t x, uint8_t y); bool is_bit_set(uint16_t bits[16], uint8_t x, uint8_t y); // ubl_motion.cpp void debug_current_and_destination(const char * const title); // ubl_G29.cpp enum MeshPointType { INVALID, REAL, SET_IN_BITMAP }; // External references char *ftostr43sign(const float&, char); bool ubl_lcd_clicked(); void home_all_axes(); extern uint8_t ubl_cnt; /////////////////////////////////////////////////////////////////////////////////////////////////////// #if ENABLED(ULTRA_LCD) extern char lcd_status_message[]; void lcd_quick_feedback(); #endif #define MESH_X_DIST (float(UBL_MESH_MAX_X - (UBL_MESH_MIN_X)) / float(GRID_MAX_POINTS_X - 1)) #define MESH_Y_DIST (float(UBL_MESH_MAX_Y - (UBL_MESH_MIN_Y)) / float(GRID_MAX_POINTS_Y - 1)) typedef struct { bool active = false; int8_t storage_slot = -1; } ubl_state; class unified_bed_leveling { private: static float last_specified_z; static int g29_verbose_level, g29_phase_value, g29_repetition_cnt, g29_storage_slot, g29_map_type; 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, g26_nozzle, g26_filament_diameter, g26_prime_length, g26_x_pos, g26_y_pos, g26_ooze_amount, g26_layer_height; static int16_t g26_bed_temp, g26_hotend_temp, g26_repeats; static int8_t g26_prime_flag; static bool g26_continue_with_closest, g26_keep_heaters_on; #endif static float measure_point_with_encoder(); static float measure_business_card_thickness(float); static bool g29_parameter_parsing(); static void find_mean_mesh_height(); static void shift_mesh_height(); static void probe_entire_mesh(const float &lx, const float &ly, const bool do_ubl_mesh_map, const bool stow_probe, bool do_furthest); static void manually_probe_remaining_mesh(const float&, const float&, const float&, const float&, const bool); static void tilt_mesh_based_on_3pts(const float &z1, const float &z2, const float &z3); static void tilt_mesh_based_on_probed_grid(const bool do_ubl_mesh_map); static void g29_what_command(); static void g29_eeprom_dump(); static void g29_compare_current_mesh_to_stored_mesh(); static void fine_tune_mesh(const float &lx, const float &ly, const bool do_ubl_mesh_map); static bool smart_fill_one(const uint8_t x, const uint8_t y, const int8_t xdir, const int8_t ydir); static void smart_fill_mesh(); #if ENABLED(UBL_G26_MESH_VALIDATION) static bool exit_from_g26(); static bool parse_G26_parameters(); static void G26_line_to_destination(const float &feed_rate); static mesh_index_pair find_closest_circle_to_print(const float&, const float&); static bool look_for_lines_to_connect(); static bool turn_on_heaters(); static bool prime_nozzle(); static void retract_filament(const float where[XYZE]); static void recover_filament(const float where[XYZE]); static void print_line_from_here_to_there(const float&, const float&, const float&, const float&, const float&, const float&); static void move_to(const float&, const float&, const float&, const float&); inline static void move_to(const float where[XYZE], const float &de) { move_to(where[X_AXIS], where[Y_AXIS], where[Z_AXIS], de); } #endif public: static void echo_name(); static void report_state(); static void save_ubl_active_state_and_disable(); static void restore_ubl_active_state_and_leave(); static void display_map(const int); static mesh_index_pair find_closest_mesh_point_of_type(const MeshPointType, const float&, const float&, const bool, uint16_t[16], bool); static void reset(); static void invalidate(); static void set_all_mesh_points_to_value(const float); static bool sanity_check(); static void G29() _O0; // O0 for no optimization static void smart_fill_wlsf(const float &) _O2; // O2 gives smaller code than Os on A2560 #if ENABLED(UBL_G26_MESH_VALIDATION) static void G26(); #endif static ubl_state state; static float z_values[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y]; // 15 is the maximum nubmer of grid points supported + 1 safety margin for now, // until determinism prevails constexpr static float _mesh_index_to_xpos[16] PROGMEM = { UBL_MESH_MIN_X + 0 * (MESH_X_DIST), UBL_MESH_MIN_X + 1 * (MESH_X_DIST), UBL_MESH_MIN_X + 2 * (MESH_X_DIST), UBL_MESH_MIN_X + 3 * (MESH_X_DIST), UBL_MESH_MIN_X + 4 * (MESH_X_DIST), UBL_MESH_MIN_X + 5 * (MESH_X_DIST), UBL_MESH_MIN_X + 6 * (MESH_X_DIST), UBL_MESH_MIN_X + 7 * (MESH_X_DIST), UBL_MESH_MIN_X + 8 * (MESH_X_DIST), UBL_MESH_MIN_X + 9 * (MESH_X_DIST), UBL_MESH_MIN_X + 10 * (MESH_X_DIST), UBL_MESH_MIN_X + 11 * (MESH_X_DIST), UBL_MESH_MIN_X + 12 * (MESH_X_DIST), UBL_MESH_MIN_X + 13 * (MESH_X_DIST), UBL_MESH_MIN_X + 14 * (MESH_X_DIST), UBL_MESH_MIN_X + 15 * (MESH_X_DIST) }; constexpr static float _mesh_index_to_ypos[16] PROGMEM = { UBL_MESH_MIN_Y + 0 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 1 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 2 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 3 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 4 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 5 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 6 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 7 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 8 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 9 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 10 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 11 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 12 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 13 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 14 * (MESH_Y_DIST), UBL_MESH_MIN_Y + 15 * (MESH_Y_DIST) }; static bool g26_debug_flag, has_control_of_lcd_panel; static volatile int encoder_diff; // Volatile because it's changed at interrupt time. unified_bed_leveling(); FORCE_INLINE static void set_z(const int8_t px, const int8_t py, const float &z) { z_values[px][py] = z; } static int8_t get_cell_index_x(const float &x) { const int8_t cx = (x - (UBL_MESH_MIN_X)) * (1.0 / (MESH_X_DIST)); return constrain(cx, 0, (GRID_MAX_POINTS_X) - 1); // -1 is appropriate if we want all movement to the X_MAX } // position. But with this defined this way, it is possible // to extrapolate off of this point even further out. Probably // that is OK because something else should be keeping that from // happening and should not be worried about at this level. static int8_t get_cell_index_y(const float &y) { const int8_t cy = (y - (UBL_MESH_MIN_Y)) * (1.0 / (MESH_Y_DIST)); return constrain(cy, 0, (GRID_MAX_POINTS_Y) - 1); // -1 is appropriate if we want all movement to the Y_MAX } // position. But with this defined this way, it is possible // to extrapolate off of this point even further out. Probably // that is OK because something else should be keeping that from // happening and should not be worried about at this level. static int8_t find_closest_x_index(const float &x) { const int8_t px = (x - (UBL_MESH_MIN_X) + (MESH_X_DIST) * 0.5) * (1.0 / (MESH_X_DIST)); return WITHIN(px, 0, GRID_MAX_POINTS_X - 1) ? px : -1; } static int8_t find_closest_y_index(const float &y) { const int8_t py = (y - (UBL_MESH_MIN_Y) + (MESH_Y_DIST) * 0.5) * (1.0 / (MESH_Y_DIST)); return WITHIN(py, 0, GRID_MAX_POINTS_Y - 1) ? py : -1; } /** * z2 --| * z0 | | * | | + (z2-z1) * z1 | | | * ---+-------------+--------+-- --| * a1 a0 a2 * |<---delta_a---------->| * * calc_z0 is the basis for all the Mesh Based correction. It is used to * find the expected Z Height at a position between two known Z-Height locations. * * It is fairly expensive with its 4 floating point additions and 2 floating point * multiplications. */ FORCE_INLINE static float calc_z0(const float &a0, const float &a1, const float &z1, const float &a2, const float &z2) { return z1 + (z2 - z1) * (a0 - a1) / (a2 - a1); } /** * z_correction_for_x_on_horizontal_mesh_line is an optimization for * the case where the printer is making a vertical line that only crosses horizontal mesh lines. */ inline static float z_correction_for_x_on_horizontal_mesh_line(const float &lx0, const int x1_i, const int yi) { if (!WITHIN(x1_i, 0, GRID_MAX_POINTS_X - 2) || !WITHIN(yi, 0, GRID_MAX_POINTS_Y - 1)) { serialprintPGM( !WITHIN(x1_i, 0, GRID_MAX_POINTS_X - 1) ? PSTR("x1l_i") : PSTR("yi") ); SERIAL_ECHOPAIR(" out of bounds in z_correction_for_x_on_horizontal_mesh_line(lx0=", lx0); SERIAL_ECHOPAIR(",x1_i=", x1_i); SERIAL_ECHOPAIR(",yi=", yi); SERIAL_CHAR(')'); SERIAL_EOL(); return NAN; } const float xratio = (RAW_X_POSITION(lx0) - mesh_index_to_xpos(x1_i)) * (1.0 / (MESH_X_DIST)), z1 = z_values[x1_i][yi]; return z1 + xratio * (z_values[x1_i + 1][yi] - z1); } // // See comments above for z_correction_for_x_on_horizontal_mesh_line // inline static float z_correction_for_y_on_vertical_mesh_line(const float &ly0, const int xi, const int y1_i) { if (!WITHIN(xi, 0, GRID_MAX_POINTS_X - 1) || !WITHIN(y1_i, 0, GRID_MAX_POINTS_Y - 2)) { serialprintPGM( !WITHIN(xi, 0, GRID_MAX_POINTS_X - 1) ? PSTR("xi") : PSTR("yl_i") ); SERIAL_ECHOPAIR(" out of bounds in z_correction_for_y_on_vertical_mesh_line(ly0=", ly0); SERIAL_ECHOPAIR(", xi=", xi); SERIAL_ECHOPAIR(", y1_i=", y1_i); SERIAL_CHAR(')'); SERIAL_EOL(); return NAN; } const float yratio = (RAW_Y_POSITION(ly0) - mesh_index_to_ypos(y1_i)) * (1.0 / (MESH_Y_DIST)), z1 = z_values[xi][y1_i]; return z1 + yratio * (z_values[xi][y1_i + 1] - z1); } /** * This is the generic Z-Correction. It works anywhere within a Mesh Cell. It first * does a linear interpolation along both of the bounding X-Mesh-Lines to find the * Z-Height at both ends. Then it does a linear interpolation of these heights based * on the Y position within the cell. */ static float get_z_correction(const float &lx0, const float &ly0) { const int8_t cx = get_cell_index_x(RAW_X_POSITION(lx0)), cy = get_cell_index_y(RAW_Y_POSITION(ly0)); if (!WITHIN(cx, 0, GRID_MAX_POINTS_X - 2) || !WITHIN(cy, 0, GRID_MAX_POINTS_Y - 2)) { SERIAL_ECHOPAIR("? in get_z_correction(lx0=", lx0); SERIAL_ECHOPAIR(", ly0=", ly0); SERIAL_CHAR(')'); SERIAL_EOL(); #if ENABLED(ULTRA_LCD) strcpy(lcd_status_message, "get_z_correction() indexes out of range."); lcd_quick_feedback(); #endif return NAN; } const float z1 = calc_z0(RAW_X_POSITION(lx0), mesh_index_to_xpos(cx), z_values[cx][cy], mesh_index_to_xpos(cx + 1), z_values[cx + 1][cy]); const float z2 = calc_z0(RAW_X_POSITION(lx0), mesh_index_to_xpos(cx), z_values[cx][cy + 1], mesh_index_to_xpos(cx + 1), z_values[cx + 1][cy + 1]); float z0 = calc_z0(RAW_Y_POSITION(ly0), mesh_index_to_ypos(cy), z1, mesh_index_to_ypos(cy + 1), z2); #if ENABLED(DEBUG_LEVELING_FEATURE) if (DEBUGGING(MESH_ADJUST)) { SERIAL_ECHOPAIR(" raw get_z_correction(", lx0); SERIAL_CHAR(','); SERIAL_ECHO(ly0); SERIAL_ECHOPGM(") = "); SERIAL_ECHO_F(z0, 6); } #endif #if ENABLED(DEBUG_LEVELING_FEATURE) if (DEBUGGING(MESH_ADJUST)) { SERIAL_ECHOPGM(" >>>---> "); SERIAL_ECHO_F(z0, 6); SERIAL_EOL(); } #endif if (isnan(z0)) { // if part of the Mesh is undefined, it will show up as NAN z0 = 0.0; // in ubl.z_values[][] and propagate through the // calculations. If our correction is NAN, we throw it out // because part of the Mesh is undefined and we don't have the // information we need to complete the height correction. #if ENABLED(DEBUG_LEVELING_FEATURE) if (DEBUGGING(MESH_ADJUST)) { SERIAL_ECHOPAIR("??? Yikes! NAN in get_z_correction(", lx0); SERIAL_CHAR(','); SERIAL_ECHO(ly0); SERIAL_CHAR(')'); SERIAL_EOL(); } #endif } return z0; } /** * This function sets the Z leveling fade factor based on the given Z height, * only re-calculating when necessary. * * Returns 1.0 if planner.z_fade_height is 0.0. * Returns 0.0 if Z is past the specified 'Fade Height'. */ #if ENABLED(ENABLE_LEVELING_FADE_HEIGHT) static inline float fade_scaling_factor_for_z(const float &lz) { if (planner.z_fade_height == 0.0) return 1.0; static float fade_scaling_factor = 1.0; const float rz = RAW_Z_POSITION(lz); if (last_specified_z != rz) { last_specified_z = rz; fade_scaling_factor = rz < planner.z_fade_height ? 1.0 - (rz * planner.inverse_z_fade_height) : 0.0; } return fade_scaling_factor; } #else FORCE_INLINE static float fade_scaling_factor_for_z(const float &lz) { return 1.0; } #endif FORCE_INLINE static float mesh_index_to_xpos(const uint8_t i) { return i < GRID_MAX_POINTS_X ? pgm_read_float(&_mesh_index_to_xpos[i]) : UBL_MESH_MIN_X + i * (MESH_X_DIST); } FORCE_INLINE static float mesh_index_to_ypos(const uint8_t i) { return i < GRID_MAX_POINTS_Y ? pgm_read_float(&_mesh_index_to_ypos[i]) : UBL_MESH_MIN_Y + i * (MESH_Y_DIST); } static bool prepare_segmented_line_to(const float ltarget[XYZE], const float &feedrate); static void line_to_destination_cartesian(const float &fr, uint8_t e); }; // class unified_bed_leveling extern unified_bed_leveling ubl; #if ENABLED(UBL_G26_MESH_VALIDATION) FORCE_INLINE void gcode_G26() { ubl.G26(); } #endif FORCE_INLINE void gcode_G29() { ubl.G29(); } #endif // AUTO_BED_LEVELING_UBL #endif // UNIFIED_BED_LEVELING_H