My Marlin configs for Fabrikator Mini and CTC i3 Pro B
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stepper_dac.cpp 3.2KB

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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. /**
  23. stepper_dac.cpp - To set stepper current via DAC
  24. Part of Marlin
  25. Copyright (c) 2016 MarlinFirmware
  26. Marlin is free software: you can redistribute it and/or modify
  27. it under the terms of the GNU General Public License as published by
  28. the Free Software Foundation, either version 3 of the License, or
  29. (at your option) any later version.
  30. Marlin is distributed in the hope that it will be useful,
  31. but WITHOUT ANY WARRANTY; without even the implied warranty of
  32. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  33. GNU General Public License for more details.
  34. You should have received a copy of the GNU General Public License
  35. along with Marlin. If not, see <http://www.gnu.org/licenses/>.
  36. */
  37. #include "Marlin.h"
  38. #if ENABLED(DAC_STEPPER_CURRENT)
  39. #include "stepper_dac.h"
  40. bool dac_present = false;
  41. const uint8_t dac_order[NUM_AXIS] = DAC_STEPPER_ORDER;
  42. int dac_init() {
  43. mcp4728_init();
  44. if (mcp4728_simpleCommand(RESET)) return -1;
  45. dac_present = true;
  46. mcp4728_setVref_all(DAC_STEPPER_VREF);
  47. mcp4728_setGain_all(DAC_STEPPER_GAIN);
  48. return 0;
  49. }
  50. void dac_current_percent(uint8_t channel, float val) {
  51. if (!dac_present) return;
  52. NOMORE(val, 100);
  53. mcp4728_analogWrite(dac_order[channel], val * DAC_STEPPER_MAX / 100);
  54. mcp4728_simpleCommand(UPDATE);
  55. }
  56. void dac_current_raw(uint8_t channel, uint16_t val) {
  57. if (!dac_present) return;
  58. NOMORE(val, DAC_STEPPER_MAX);
  59. mcp4728_analogWrite(dac_order[channel], val);
  60. mcp4728_simpleCommand(UPDATE);
  61. }
  62. static float dac_perc(int8_t n) { return 100.0 * mcp4728_getValue(dac_order[n]) / DAC_STEPPER_MAX; }
  63. static float dac_amps(int8_t n) { return ((2.048 * mcp4728_getValue(dac_order[n])) / 4096.0) / (8.0 * DAC_STEPPER_SENSE); }
  64. void dac_print_values() {
  65. if (!dac_present) return;
  66. SERIAL_ECHO_START;
  67. SERIAL_ECHOLNPGM("Stepper current values in % (Amps):");
  68. SERIAL_ECHO_START;
  69. SERIAL_ECHOPAIR(" X:", dac_perc(0));
  70. SERIAL_ECHOPAIR(" (", dac_amps(0));
  71. SERIAL_ECHOPAIR(") Y:", dac_perc(1));
  72. SERIAL_ECHOPAIR(" (", dac_amps(1));
  73. SERIAL_ECHOPAIR(") Z:", dac_perc(2));
  74. SERIAL_ECHOPAIR(" (", dac_amps(2));
  75. SERIAL_ECHOPAIR(") E:", dac_perc(3));
  76. SERIAL_ECHOPAIR(" (", dac_amps(3));
  77. SERIAL_ECHOLN(")");
  78. }
  79. void dac_commit_eeprom() {
  80. if (!dac_present) return;
  81. mcp4728_eepromWrite();
  82. }
  83. #endif // DAC_STEPPER_CURRENT