My Marlin configs for Fabrikator Mini and CTC i3 Pro B
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mesh_bed_leveling.h 3.1KB

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  1. /**
  2. * Marlin 3D Printer Firmware
  3. * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  4. *
  5. * Based on Sprinter and grbl.
  6. * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
  7. *
  8. * This program is free software: you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License as published by
  10. * the Free Software Foundation, either version 3 of the License, or
  11. * (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  20. *
  21. */
  22. #include "Marlin.h"
  23. #if ENABLED(MESH_BED_LEVELING)
  24. #define MESH_X_DIST ((MESH_MAX_X - (MESH_MIN_X))/(MESH_NUM_X_POINTS - 1))
  25. #define MESH_Y_DIST ((MESH_MAX_Y - (MESH_MIN_Y))/(MESH_NUM_Y_POINTS - 1))
  26. class mesh_bed_leveling {
  27. public:
  28. bool active;
  29. float z_offset;
  30. float z_values[MESH_NUM_Y_POINTS][MESH_NUM_X_POINTS];
  31. mesh_bed_leveling();
  32. void reset();
  33. static FORCE_INLINE float get_x(int8_t i) { return MESH_MIN_X + (MESH_X_DIST) * i; }
  34. static FORCE_INLINE float get_y(int8_t i) { return MESH_MIN_Y + (MESH_Y_DIST) * i; }
  35. void set_z(int8_t ix, int8_t iy, float z) { z_values[iy][ix] = z; }
  36. inline void zigzag(int8_t index, int8_t &ix, int8_t &iy) {
  37. ix = index % (MESH_NUM_X_POINTS);
  38. iy = index / (MESH_NUM_X_POINTS);
  39. if (iy & 1) ix = (MESH_NUM_X_POINTS - 1) - ix; // Zig zag
  40. }
  41. void set_zigzag_z(int8_t index, float z) {
  42. int8_t ix, iy;
  43. zigzag(index, ix, iy);
  44. set_z(ix, iy, z);
  45. }
  46. int8_t select_x_index(float x) {
  47. for (uint8_t i = MESH_NUM_X_POINTS; i--;)
  48. if (fabs(x - get_x(i)) <= (MESH_X_DIST) / 2)
  49. return i;
  50. return -1;
  51. }
  52. int8_t select_y_index(float y) {
  53. for (uint8_t i = MESH_NUM_Y_POINTS; i--;)
  54. if (fabs(y - get_y(i)) <= (MESH_Y_DIST) / 2)
  55. return i;
  56. return -1;
  57. }
  58. float calc_z0(float a0, float a1, float z1, float a2, float z2) {
  59. float delta_z = (z2 - z1) / (a2 - a1);
  60. float delta_a = a0 - a1;
  61. return z1 + delta_a * delta_z;
  62. }
  63. float get_z(float x0, float y0) {
  64. int8_t x_index = select_x_index(x0);
  65. int8_t y_index = select_y_index(y0);
  66. if (x_index < 0 || y_index < 0) return z_offset;
  67. float z1 = calc_z0(x0,
  68. get_x(x_index), z_values[y_index][x_index],
  69. get_x(x_index + 1), z_values[y_index][x_index + 1]);
  70. float z2 = calc_z0(x0,
  71. get_x(x_index), z_values[y_index + 1][x_index],
  72. get_x(x_index + 1), z_values[y_index + 1][x_index + 1]);
  73. float z0 = calc_z0(y0,
  74. get_y(y_index), z1,
  75. get_y(y_index + 1), z2);
  76. return z0 + z_offset;
  77. }
  78. };
  79. extern mesh_bed_leveling mbl;
  80. #endif // MESH_BED_LEVELING