My Marlin configs for Fabrikator Mini and CTC i3 Pro B
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stepper_dac.cpp 3.9KB

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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. uint16_t dac_channel_pct[XYZE] = DAC_STEPPER_DFLT;
  43. int dac_init() {
  44. #if PIN_EXISTS(DAC_DISABLE)
  45. OUT_WRITE(DAC_DISABLE_PIN, LOW); // set pin low to enable DAC
  46. #endif
  47. mcp4728_init();
  48. if (mcp4728_simpleCommand(RESET)) return -1;
  49. dac_present = true;
  50. mcp4728_setVref_all(DAC_STEPPER_VREF);
  51. mcp4728_setGain_all(DAC_STEPPER_GAIN);
  52. if (mcp4728_getDrvPct(0) < 1 || mcp4728_getDrvPct(1) < 1 || mcp4728_getDrvPct(2) < 1 || mcp4728_getDrvPct(3) < 1 ) {
  53. mcp4728_setDrvPct(dac_channel_pct);
  54. mcp4728_eepromWrite();
  55. }
  56. return 0;
  57. }
  58. void dac_current_percent(uint8_t channel, float val) {
  59. if (!dac_present) return;
  60. NOMORE(val, 100);
  61. mcp4728_analogWrite(dac_order[channel], val * 0.01 * (DAC_STEPPER_MAX));
  62. mcp4728_simpleCommand(UPDATE);
  63. }
  64. void dac_current_raw(uint8_t channel, uint16_t val) {
  65. if (!dac_present) return;
  66. NOMORE(val, DAC_STEPPER_MAX);
  67. mcp4728_analogWrite(dac_order[channel], val);
  68. mcp4728_simpleCommand(UPDATE);
  69. }
  70. static float dac_perc(int8_t n) { return 100.0 * mcp4728_getValue(dac_order[n]) * (1.0 / (DAC_STEPPER_MAX)); }
  71. static float dac_amps(int8_t n) { return mcp4728_getDrvPct(dac_order[n]) * (DAC_STEPPER_MAX) * 0.125 * (1.0 / (DAC_STEPPER_SENSE)); }
  72. int16_t dac_current_get_percent(AxisEnum axis) { return mcp4728_getDrvPct(dac_order[axis]); }
  73. void dac_current_set_percents(int16_t pct[XYZE]) {
  74. LOOP_XYZE(i) dac_channel_pct[i] = pct[dac_order[i]];
  75. mcp4728_setDrvPct(dac_channel_pct);
  76. }
  77. void dac_print_values() {
  78. if (!dac_present) return;
  79. SERIAL_ECHO_START;
  80. SERIAL_ECHOLNPGM("Stepper current values in % (Amps):");
  81. SERIAL_ECHO_START;
  82. SERIAL_ECHOPAIR(" X:", dac_perc(X_AXIS));
  83. SERIAL_ECHOPAIR(" (", dac_amps(X_AXIS));
  84. SERIAL_ECHOPAIR(") Y:", dac_perc(Y_AXIS));
  85. SERIAL_ECHOPAIR(" (", dac_amps(Y_AXIS));
  86. SERIAL_ECHOPAIR(") Z:", dac_perc(Z_AXIS));
  87. SERIAL_ECHOPAIR(" (", dac_amps(Z_AXIS));
  88. SERIAL_ECHOPAIR(") E:", dac_perc(E_AXIS));
  89. SERIAL_ECHOPAIR(" (", dac_amps(E_AXIS));
  90. SERIAL_ECHOLN(")");
  91. }
  92. void dac_commit_eeprom() {
  93. if (!dac_present) return;
  94. mcp4728_eepromWrite();
  95. }
  96. #endif // DAC_STEPPER_CURRENT