My Marlin configs for Fabrikator Mini and CTC i3 Pro B
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stepper.cpp 38KB

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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.cpp - A singleton object to execute motion plans using stepper motors
  24. * Marlin Firmware
  25. *
  26. * Derived from Grbl
  27. * Copyright (c) 2009-2011 Simen Svale Skogsrud
  28. *
  29. * Grbl is free software: you can redistribute it and/or modify
  30. * it under the terms of the GNU General Public License as published by
  31. * the Free Software Foundation, either version 3 of the License, or
  32. * (at your option) any later version.
  33. *
  34. * Grbl is distributed in the hope that it will be useful,
  35. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  36. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  37. * GNU General Public License for more details.
  38. *
  39. * You should have received a copy of the GNU General Public License
  40. * along with Grbl. If not, see <http://www.gnu.org/licenses/>.
  41. */
  42. /* The timer calculations of this module informed by the 'RepRap cartesian firmware' by Zack Smith
  43. and Philipp Tiefenbacher. */
  44. #include "Marlin.h"
  45. #include "stepper.h"
  46. #include "endstops.h"
  47. #include "planner.h"
  48. #include "temperature.h"
  49. #include "ultralcd.h"
  50. #include "language.h"
  51. #include "cardreader.h"
  52. #include "speed_lookuptable.h"
  53. #if HAS_DIGIPOTSS
  54. #include <SPI.h>
  55. #endif
  56. Stepper stepper; // Singleton
  57. // public:
  58. block_t* Stepper::current_block = NULL; // A pointer to the block currently being traced
  59. #if ENABLED(ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED)
  60. bool Stepper::abort_on_endstop_hit = false;
  61. #endif
  62. #if ENABLED(Z_DUAL_ENDSTOPS)
  63. bool Stepper::performing_homing = false;
  64. #endif
  65. // private:
  66. unsigned char Stepper::last_direction_bits = 0; // The next stepping-bits to be output
  67. unsigned int Stepper::cleaning_buffer_counter = 0;
  68. #if ENABLED(Z_DUAL_ENDSTOPS)
  69. bool Stepper::locked_z_motor = false;
  70. bool Stepper::locked_z2_motor = false;
  71. #endif
  72. long Stepper::counter_X = 0,
  73. Stepper::counter_Y = 0,
  74. Stepper::counter_Z = 0,
  75. Stepper::counter_E = 0;
  76. volatile uint32_t Stepper::step_events_completed = 0; // The number of step events executed in the current block
  77. #if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
  78. unsigned char Stepper::old_OCR0A;
  79. volatile unsigned char Stepper::eISR_Rate = 200; // Keep the ISR at a low rate until needed
  80. #if ENABLED(LIN_ADVANCE)
  81. volatile long Stepper::e_steps[E_STEPPERS];
  82. int Stepper::extruder_advance_k = LIN_ADVANCE_K,
  83. Stepper::final_estep_rate,
  84. Stepper::current_estep_rate[E_STEPPERS],
  85. Stepper::current_adv_steps[E_STEPPERS];
  86. #else
  87. long Stepper::e_steps[E_STEPPERS],
  88. Stepper::final_advance = 0,
  89. Stepper::old_advance = 0,
  90. Stepper::advance_rate,
  91. Stepper::advance;
  92. #endif
  93. #endif
  94. long Stepper::acceleration_time, Stepper::deceleration_time;
  95. volatile long Stepper::count_position[NUM_AXIS] = { 0 };
  96. volatile signed char Stepper::count_direction[NUM_AXIS] = { 1, 1, 1, 1 };
  97. #if ENABLED(MIXING_EXTRUDER)
  98. long Stepper::counter_m[MIXING_STEPPERS];
  99. #endif
  100. unsigned short Stepper::acc_step_rate; // needed for deceleration start point
  101. uint8_t Stepper::step_loops, Stepper::step_loops_nominal;
  102. unsigned short Stepper::OCR1A_nominal;
  103. volatile long Stepper::endstops_trigsteps[XYZ];
  104. #if ENABLED(X_DUAL_STEPPER_DRIVERS)
  105. #define X_APPLY_DIR(v,Q) do{ X_DIR_WRITE(v); X2_DIR_WRITE((v) != INVERT_X2_VS_X_DIR); }while(0)
  106. #define X_APPLY_STEP(v,Q) do{ X_STEP_WRITE(v); X2_STEP_WRITE(v); }while(0)
  107. #elif ENABLED(DUAL_X_CARRIAGE)
  108. #define X_APPLY_DIR(v,ALWAYS) \
  109. if (extruder_duplication_enabled || ALWAYS) { \
  110. X_DIR_WRITE(v); \
  111. X2_DIR_WRITE(v); \
  112. } \
  113. else { \
  114. if (current_block->active_extruder) X2_DIR_WRITE(v); else X_DIR_WRITE(v); \
  115. }
  116. #define X_APPLY_STEP(v,ALWAYS) \
  117. if (extruder_duplication_enabled || ALWAYS) { \
  118. X_STEP_WRITE(v); \
  119. X2_STEP_WRITE(v); \
  120. } \
  121. else { \
  122. if (current_block->active_extruder != 0) X2_STEP_WRITE(v); else X_STEP_WRITE(v); \
  123. }
  124. #else
  125. #define X_APPLY_DIR(v,Q) X_DIR_WRITE(v)
  126. #define X_APPLY_STEP(v,Q) X_STEP_WRITE(v)
  127. #endif
  128. #if ENABLED(Y_DUAL_STEPPER_DRIVERS)
  129. #define Y_APPLY_DIR(v,Q) do{ Y_DIR_WRITE(v); Y2_DIR_WRITE((v) != INVERT_Y2_VS_Y_DIR); }while(0)
  130. #define Y_APPLY_STEP(v,Q) do{ Y_STEP_WRITE(v); Y2_STEP_WRITE(v); }while(0)
  131. #else
  132. #define Y_APPLY_DIR(v,Q) Y_DIR_WRITE(v)
  133. #define Y_APPLY_STEP(v,Q) Y_STEP_WRITE(v)
  134. #endif
  135. #if ENABLED(Z_DUAL_STEPPER_DRIVERS)
  136. #define Z_APPLY_DIR(v,Q) do{ Z_DIR_WRITE(v); Z2_DIR_WRITE(v); }while(0)
  137. #if ENABLED(Z_DUAL_ENDSTOPS)
  138. #define Z_APPLY_STEP(v,Q) \
  139. if (performing_homing) { \
  140. if (Z_HOME_DIR > 0) {\
  141. if (!(TEST(endstops.old_endstop_bits, Z_MAX) && (count_direction[Z_AXIS] > 0)) && !locked_z_motor) Z_STEP_WRITE(v); \
  142. if (!(TEST(endstops.old_endstop_bits, Z2_MAX) && (count_direction[Z_AXIS] > 0)) && !locked_z2_motor) Z2_STEP_WRITE(v); \
  143. } \
  144. else { \
  145. if (!(TEST(endstops.old_endstop_bits, Z_MIN) && (count_direction[Z_AXIS] < 0)) && !locked_z_motor) Z_STEP_WRITE(v); \
  146. if (!(TEST(endstops.old_endstop_bits, Z2_MIN) && (count_direction[Z_AXIS] < 0)) && !locked_z2_motor) Z2_STEP_WRITE(v); \
  147. } \
  148. } \
  149. else { \
  150. Z_STEP_WRITE(v); \
  151. Z2_STEP_WRITE(v); \
  152. }
  153. #else
  154. #define Z_APPLY_STEP(v,Q) do{ Z_STEP_WRITE(v); Z2_STEP_WRITE(v); }while(0)
  155. #endif
  156. #else
  157. #define Z_APPLY_DIR(v,Q) Z_DIR_WRITE(v)
  158. #define Z_APPLY_STEP(v,Q) Z_STEP_WRITE(v)
  159. #endif
  160. #if DISABLED(MIXING_EXTRUDER)
  161. #define E_APPLY_STEP(v,Q) E_STEP_WRITE(v)
  162. #endif
  163. // intRes = longIn1 * longIn2 >> 24
  164. // uses:
  165. // r26 to store 0
  166. // r27 to store bits 16-23 of the 48bit result. The top bit is used to round the two byte result.
  167. // note that the lower two bytes and the upper byte of the 48bit result are not calculated.
  168. // this can cause the result to be out by one as the lower bytes may cause carries into the upper ones.
  169. // B0 A0 are bits 24-39 and are the returned value
  170. // C1 B1 A1 is longIn1
  171. // D2 C2 B2 A2 is longIn2
  172. //
  173. #define MultiU24X32toH16(intRes, longIn1, longIn2) \
  174. asm volatile ( \
  175. "clr r26 \n\t" \
  176. "mul %A1, %B2 \n\t" \
  177. "mov r27, r1 \n\t" \
  178. "mul %B1, %C2 \n\t" \
  179. "movw %A0, r0 \n\t" \
  180. "mul %C1, %C2 \n\t" \
  181. "add %B0, r0 \n\t" \
  182. "mul %C1, %B2 \n\t" \
  183. "add %A0, r0 \n\t" \
  184. "adc %B0, r1 \n\t" \
  185. "mul %A1, %C2 \n\t" \
  186. "add r27, r0 \n\t" \
  187. "adc %A0, r1 \n\t" \
  188. "adc %B0, r26 \n\t" \
  189. "mul %B1, %B2 \n\t" \
  190. "add r27, r0 \n\t" \
  191. "adc %A0, r1 \n\t" \
  192. "adc %B0, r26 \n\t" \
  193. "mul %C1, %A2 \n\t" \
  194. "add r27, r0 \n\t" \
  195. "adc %A0, r1 \n\t" \
  196. "adc %B0, r26 \n\t" \
  197. "mul %B1, %A2 \n\t" \
  198. "add r27, r1 \n\t" \
  199. "adc %A0, r26 \n\t" \
  200. "adc %B0, r26 \n\t" \
  201. "lsr r27 \n\t" \
  202. "adc %A0, r26 \n\t" \
  203. "adc %B0, r26 \n\t" \
  204. "mul %D2, %A1 \n\t" \
  205. "add %A0, r0 \n\t" \
  206. "adc %B0, r1 \n\t" \
  207. "mul %D2, %B1 \n\t" \
  208. "add %B0, r0 \n\t" \
  209. "clr r1 \n\t" \
  210. : \
  211. "=&r" (intRes) \
  212. : \
  213. "d" (longIn1), \
  214. "d" (longIn2) \
  215. : \
  216. "r26" , "r27" \
  217. )
  218. // Some useful constants
  219. #define ENABLE_STEPPER_DRIVER_INTERRUPT() SBI(TIMSK1, OCIE1A)
  220. #define DISABLE_STEPPER_DRIVER_INTERRUPT() CBI(TIMSK1, OCIE1A)
  221. /**
  222. * __________________________
  223. * /| |\ _________________ ^
  224. * / | | \ /| |\ |
  225. * / | | \ / | | \ s
  226. * / | | | | | \ p
  227. * / | | | | | \ e
  228. * +-----+------------------------+---+--+---------------+----+ e
  229. * | BLOCK 1 | BLOCK 2 | d
  230. *
  231. * time ----->
  232. *
  233. * The trapezoid is the shape the speed curve over time. It starts at block->initial_rate, accelerates
  234. * first block->accelerate_until step_events_completed, then keeps going at constant speed until
  235. * step_events_completed reaches block->decelerate_after after which it decelerates until the trapezoid generator is reset.
  236. * The slope of acceleration is calculated using v = u + at where t is the accumulated timer values of the steps so far.
  237. */
  238. void Stepper::wake_up() {
  239. // TCNT1 = 0;
  240. ENABLE_STEPPER_DRIVER_INTERRUPT();
  241. }
  242. /**
  243. * Set the stepper direction of each axis
  244. *
  245. * COREXY: X_AXIS=A_AXIS and Y_AXIS=B_AXIS
  246. * COREXZ: X_AXIS=A_AXIS and Z_AXIS=C_AXIS
  247. * COREYZ: Y_AXIS=B_AXIS and Z_AXIS=C_AXIS
  248. */
  249. void Stepper::set_directions() {
  250. #define SET_STEP_DIR(AXIS) \
  251. if (motor_direction(AXIS ##_AXIS)) { \
  252. AXIS ##_APPLY_DIR(INVERT_## AXIS ##_DIR, false); \
  253. count_direction[AXIS ##_AXIS] = -1; \
  254. } \
  255. else { \
  256. AXIS ##_APPLY_DIR(!INVERT_## AXIS ##_DIR, false); \
  257. count_direction[AXIS ##_AXIS] = 1; \
  258. }
  259. #if HAS_X_DIR
  260. SET_STEP_DIR(X); // A
  261. #endif
  262. #if HAS_Y_DIR
  263. SET_STEP_DIR(Y); // B
  264. #endif
  265. #if HAS_Z_DIR
  266. SET_STEP_DIR(Z); // C
  267. #endif
  268. if (motor_direction(E_AXIS)) {
  269. REV_E_DIR();
  270. count_direction[E_AXIS] = -1;
  271. }
  272. else {
  273. NORM_E_DIR();
  274. count_direction[E_AXIS] = 1;
  275. }
  276. }
  277. // "The Stepper Driver Interrupt" - This timer interrupt is the workhorse.
  278. // It pops blocks from the block_buffer and executes them by pulsing the stepper pins appropriately.
  279. ISR(TIMER1_COMPA_vect) { Stepper::isr(); }
  280. void Stepper::isr() {
  281. if (cleaning_buffer_counter) {
  282. current_block = NULL;
  283. planner.discard_current_block();
  284. #ifdef SD_FINISHED_RELEASECOMMAND
  285. if ((cleaning_buffer_counter == 1) && (SD_FINISHED_STEPPERRELEASE)) enqueue_and_echo_commands_P(PSTR(SD_FINISHED_RELEASECOMMAND));
  286. #endif
  287. cleaning_buffer_counter--;
  288. OCR1A = 200;
  289. return;
  290. }
  291. // If there is no current block, attempt to pop one from the buffer
  292. if (!current_block) {
  293. // Anything in the buffer?
  294. current_block = planner.get_current_block();
  295. if (current_block) {
  296. current_block->busy = true;
  297. trapezoid_generator_reset();
  298. // Initialize Bresenham counters to 1/2 the ceiling
  299. counter_X = counter_Y = counter_Z = counter_E = -(current_block->step_event_count >> 1);
  300. #if ENABLED(MIXING_EXTRUDER)
  301. MIXING_STEPPERS_LOOP(i)
  302. counter_m[i] = -(current_block->mix_event_count[i] >> 1);
  303. #endif
  304. step_events_completed = 0;
  305. #if ENABLED(Z_LATE_ENABLE)
  306. if (current_block->steps[Z_AXIS] > 0) {
  307. enable_z();
  308. OCR1A = 2000; //1ms wait
  309. return;
  310. }
  311. #endif
  312. // #if ENABLED(ADVANCE)
  313. // e_steps[TOOL_E_INDEX] = 0;
  314. // #endif
  315. }
  316. else {
  317. OCR1A = 2000; // 1kHz.
  318. }
  319. }
  320. if (current_block) {
  321. // Update endstops state, if enabled
  322. if (endstops.enabled
  323. #if HAS_BED_PROBE
  324. || endstops.z_probe_enabled
  325. #endif
  326. ) endstops.update();
  327. // Take multiple steps per interrupt (For high speed moves)
  328. bool all_steps_done = false;
  329. for (int8_t i = 0; i < step_loops; i++) {
  330. #ifndef USBCON
  331. customizedSerial.checkRx(); // Check for serial chars.
  332. #endif
  333. #if ENABLED(LIN_ADVANCE)
  334. counter_E += current_block->steps[E_AXIS];
  335. if (counter_E > 0) {
  336. counter_E -= current_block->step_event_count;
  337. #if DISABLED(MIXING_EXTRUDER)
  338. // Don't step E here for mixing extruder
  339. count_position[E_AXIS] += count_direction[E_AXIS];
  340. motor_direction(E_AXIS) ? --e_steps[TOOL_E_INDEX] : ++e_steps[TOOL_E_INDEX];
  341. #endif
  342. }
  343. #if ENABLED(MIXING_EXTRUDER)
  344. // Step mixing steppers proportionally
  345. bool dir = motor_direction(E_AXIS);
  346. MIXING_STEPPERS_LOOP(j) {
  347. counter_m[j] += current_block->steps[E_AXIS];
  348. if (counter_m[j] > 0) {
  349. counter_m[j] -= current_block->mix_event_count[j];
  350. dir ? --e_steps[j] : ++e_steps[j];
  351. }
  352. }
  353. #endif
  354. if (current_block->use_advance_lead) {
  355. int delta_adv_steps = (((long)extruder_advance_k * current_estep_rate[TOOL_E_INDEX]) >> 9) - current_adv_steps[TOOL_E_INDEX];
  356. #if ENABLED(MIXING_EXTRUDER)
  357. // Mixing extruders apply advance lead proportionally
  358. MIXING_STEPPERS_LOOP(j) {
  359. int steps = delta_adv_steps * current_block->step_event_count / current_block->mix_event_count[j];
  360. e_steps[j] += steps;
  361. current_adv_steps[j] += steps;
  362. }
  363. #else
  364. // For most extruders, advance the single E stepper
  365. e_steps[TOOL_E_INDEX] += delta_adv_steps;
  366. current_adv_steps[TOOL_E_INDEX] += delta_adv_steps;
  367. #endif
  368. }
  369. #elif ENABLED(ADVANCE)
  370. // Always count the unified E axis
  371. counter_E += current_block->steps[E_AXIS];
  372. if (counter_E > 0) {
  373. counter_E -= current_block->step_event_count;
  374. #if DISABLED(MIXING_EXTRUDER)
  375. // Don't step E here for mixing extruder
  376. motor_direction(E_AXIS) ? --e_steps[TOOL_E_INDEX] : ++e_steps[TOOL_E_INDEX];
  377. #endif
  378. }
  379. #if ENABLED(MIXING_EXTRUDER)
  380. // Step mixing steppers proportionally
  381. bool dir = motor_direction(E_AXIS);
  382. MIXING_STEPPERS_LOOP(j) {
  383. counter_m[j] += current_block->steps[E_AXIS];
  384. if (counter_m[j] > 0) {
  385. counter_m[j] -= current_block->mix_event_count[j];
  386. dir ? --e_steps[j] : ++e_steps[j];
  387. }
  388. }
  389. #endif // MIXING_EXTRUDER
  390. #endif // ADVANCE or LIN_ADVANCE
  391. #define _COUNTER(AXIS) counter_## AXIS
  392. #define _APPLY_STEP(AXIS) AXIS ##_APPLY_STEP
  393. #define _INVERT_STEP_PIN(AXIS) INVERT_## AXIS ##_STEP_PIN
  394. // Advance the Bresenham counter; start a pulse if the axis needs a step
  395. #define PULSE_START(AXIS) \
  396. _COUNTER(AXIS) += current_block->steps[_AXIS(AXIS)]; \
  397. if (_COUNTER(AXIS) > 0) { _APPLY_STEP(AXIS)(!_INVERT_STEP_PIN(AXIS),0); }
  398. // Stop an active pulse, reset the Bresenham counter, update the position
  399. #define PULSE_STOP(AXIS) \
  400. if (_COUNTER(AXIS) > 0) { \
  401. _COUNTER(AXIS) -= current_block->step_event_count; \
  402. count_position[_AXIS(AXIS)] += count_direction[_AXIS(AXIS)]; \
  403. _APPLY_STEP(AXIS)(_INVERT_STEP_PIN(AXIS),0); \
  404. }
  405. // If a minimum pulse time was specified get the CPU clock
  406. #if MINIMUM_STEPPER_PULSE > 0
  407. static uint32_t pulse_start;
  408. pulse_start = TCNT0;
  409. #endif
  410. #if HAS_X_STEP
  411. PULSE_START(X);
  412. #endif
  413. #if HAS_Y_STEP
  414. PULSE_START(Y);
  415. #endif
  416. #if HAS_Z_STEP
  417. PULSE_START(Z);
  418. #endif
  419. // For non-advance use linear interpolation for E also
  420. #if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
  421. #if ENABLED(MIXING_EXTRUDER)
  422. // Keep updating the single E axis
  423. counter_E += current_block->steps[E_AXIS];
  424. // Tick the counters used for this mix
  425. MIXING_STEPPERS_LOOP(j) {
  426. // Step mixing steppers (proportionally)
  427. counter_m[j] += current_block->steps[E_AXIS];
  428. // Step when the counter goes over zero
  429. if (counter_m[j] > 0) En_STEP_WRITE(j, !INVERT_E_STEP_PIN);
  430. }
  431. #else // !MIXING_EXTRUDER
  432. PULSE_START(E);
  433. #endif
  434. #endif // !ADVANCE && !LIN_ADVANCE
  435. // For a minimum pulse time wait before stopping pulses
  436. #if MINIMUM_STEPPER_PULSE > 0
  437. #define CYCLES_EATEN_BY_CODE 10
  438. while ((uint32_t)(TCNT0 - pulse_start) < (MINIMUM_STEPPER_PULSE * (F_CPU / 1000000UL)) - CYCLES_EATEN_BY_CODE) { /* nada */ }
  439. #endif
  440. #if HAS_X_STEP
  441. PULSE_STOP(X);
  442. #endif
  443. #if HAS_Y_STEP
  444. PULSE_STOP(Y);
  445. #endif
  446. #if HAS_Z_STEP
  447. PULSE_STOP(Z);
  448. #endif
  449. #if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
  450. #if ENABLED(MIXING_EXTRUDER)
  451. // Always step the single E axis
  452. if (counter_E > 0) {
  453. counter_E -= current_block->step_event_count;
  454. count_position[E_AXIS] += count_direction[E_AXIS];
  455. }
  456. MIXING_STEPPERS_LOOP(j) {
  457. if (counter_m[j] > 0) {
  458. counter_m[j] -= current_block->mix_event_count[j];
  459. En_STEP_WRITE(j, INVERT_E_STEP_PIN);
  460. }
  461. }
  462. #else // !MIXING_EXTRUDER
  463. PULSE_STOP(E);
  464. #endif
  465. #endif // !ADVANCE && !LIN_ADVANCE
  466. if (++step_events_completed >= current_block->step_event_count) {
  467. all_steps_done = true;
  468. break;
  469. }
  470. }
  471. #if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
  472. // If we have esteps to execute, fire the next advance_isr "now"
  473. if (e_steps[TOOL_E_INDEX]) OCR0A = TCNT0 + 2;
  474. #endif
  475. // Calculate new timer value
  476. uint16_t timer, step_rate;
  477. if (step_events_completed <= (uint32_t)current_block->accelerate_until) {
  478. MultiU24X32toH16(acc_step_rate, acceleration_time, current_block->acceleration_rate);
  479. acc_step_rate += current_block->initial_rate;
  480. // upper limit
  481. NOMORE(acc_step_rate, current_block->nominal_rate);
  482. // step_rate to timer interval
  483. timer = calc_timer(acc_step_rate);
  484. OCR1A = timer;
  485. acceleration_time += timer;
  486. #if ENABLED(LIN_ADVANCE)
  487. if (current_block->use_advance_lead)
  488. current_estep_rate[TOOL_E_INDEX] = ((uint32_t)acc_step_rate * current_block->e_speed_multiplier8) >> 8;
  489. if (current_block->use_advance_lead) {
  490. #if ENABLED(MIXING_EXTRUDER)
  491. MIXING_STEPPERS_LOOP(j)
  492. current_estep_rate[j] = ((uint32_t)acc_step_rate * current_block->e_speed_multiplier8 * current_block->step_event_count / current_block->mix_event_count[j]) >> 8;
  493. #else
  494. current_estep_rate[TOOL_E_INDEX] = ((uint32_t)acc_step_rate * current_block->e_speed_multiplier8) >> 8;
  495. #endif
  496. }
  497. #elif ENABLED(ADVANCE)
  498. advance += advance_rate * step_loops;
  499. //NOLESS(advance, current_block->advance);
  500. long advance_whole = advance >> 8,
  501. advance_factor = advance_whole - old_advance;
  502. // Do E steps + advance steps
  503. #if ENABLED(MIXING_EXTRUDER)
  504. // ...for mixing steppers proportionally
  505. MIXING_STEPPERS_LOOP(j)
  506. e_steps[j] += advance_factor * current_block->step_event_count / current_block->mix_event_count[j];
  507. #else
  508. // ...for the active extruder
  509. e_steps[TOOL_E_INDEX] += advance_factor;
  510. #endif
  511. old_advance = advance_whole;
  512. #endif // ADVANCE or LIN_ADVANCE
  513. #if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
  514. eISR_Rate = (timer >> 2) * step_loops / abs(e_steps[TOOL_E_INDEX]);
  515. #endif
  516. }
  517. else if (step_events_completed > (uint32_t)current_block->decelerate_after) {
  518. MultiU24X32toH16(step_rate, deceleration_time, current_block->acceleration_rate);
  519. if (step_rate < acc_step_rate) { // Still decelerating?
  520. step_rate = acc_step_rate - step_rate;
  521. NOLESS(step_rate, current_block->final_rate);
  522. }
  523. else
  524. step_rate = current_block->final_rate;
  525. // step_rate to timer interval
  526. timer = calc_timer(step_rate);
  527. OCR1A = timer;
  528. deceleration_time += timer;
  529. #if ENABLED(LIN_ADVANCE)
  530. if (current_block->use_advance_lead) {
  531. #if ENABLED(MIXING_EXTRUDER)
  532. MIXING_STEPPERS_LOOP(j)
  533. current_estep_rate[j] = ((uint32_t)step_rate * current_block->e_speed_multiplier8 * current_block->step_event_count / current_block->mix_event_count[j]) >> 8;
  534. #else
  535. current_estep_rate[TOOL_E_INDEX] = ((uint32_t)step_rate * current_block->e_speed_multiplier8) >> 8;
  536. #endif
  537. }
  538. #elif ENABLED(ADVANCE)
  539. advance -= advance_rate * step_loops;
  540. NOLESS(advance, final_advance);
  541. // Do E steps + advance steps
  542. long advance_whole = advance >> 8,
  543. advance_factor = advance_whole - old_advance;
  544. #if ENABLED(MIXING_EXTRUDER)
  545. MIXING_STEPPERS_LOOP(j)
  546. e_steps[j] += advance_factor * current_block->step_event_count / current_block->mix_event_count[j];
  547. #else
  548. e_steps[TOOL_E_INDEX] += advance_factor;
  549. #endif
  550. old_advance = advance_whole;
  551. #endif // ADVANCE or LIN_ADVANCE
  552. #if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
  553. eISR_Rate = (timer >> 2) * step_loops / abs(e_steps[TOOL_E_INDEX]);
  554. #endif
  555. }
  556. else {
  557. #if ENABLED(LIN_ADVANCE)
  558. if (current_block->use_advance_lead)
  559. current_estep_rate[TOOL_E_INDEX] = final_estep_rate;
  560. eISR_Rate = (OCR1A_nominal >> 2) * step_loops_nominal / abs(e_steps[TOOL_E_INDEX]);
  561. #endif
  562. OCR1A = OCR1A_nominal;
  563. // ensure we're running at the correct step rate, even if we just came off an acceleration
  564. step_loops = step_loops_nominal;
  565. }
  566. NOLESS(OCR1A, TCNT1 + 16);
  567. // If current block is finished, reset pointer
  568. if (all_steps_done) {
  569. current_block = NULL;
  570. planner.discard_current_block();
  571. }
  572. }
  573. }
  574. #if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
  575. // Timer interrupt for E. e_steps is set in the main routine;
  576. // Timer 0 is shared with millies
  577. ISR(TIMER0_COMPA_vect) { Stepper::advance_isr(); }
  578. void Stepper::advance_isr() {
  579. old_OCR0A += eISR_Rate;
  580. OCR0A = old_OCR0A;
  581. #define START_E_PULSE(INDEX) \
  582. if (e_steps[INDEX]) E## INDEX ##_STEP_WRITE(!INVERT_E_STEP_PIN)
  583. #define STOP_E_PULSE(INDEX) \
  584. if (e_steps[INDEX]) { \
  585. e_steps[INDEX] <= 0 ? ++e_steps[INDEX] : --e_steps[INDEX]; \
  586. E## INDEX ##_STEP_WRITE(INVERT_E_STEP_PIN); \
  587. }
  588. // Step all E steppers that have steps
  589. for (uint8_t i = 0; i < step_loops; i++) {
  590. #if MINIMUM_STEPPER_PULSE > 0
  591. static uint32_t pulse_start;
  592. pulse_start = TCNT0;
  593. #endif
  594. START_E_PULSE(0);
  595. #if E_STEPPERS > 1
  596. START_E_PULSE(1);
  597. #if E_STEPPERS > 2
  598. START_E_PULSE(2);
  599. #if E_STEPPERS > 3
  600. START_E_PULSE(3);
  601. #endif
  602. #endif
  603. #endif
  604. // For a minimum pulse time wait before stopping pulses
  605. #if MINIMUM_STEPPER_PULSE > 0
  606. #define CYCLES_EATEN_BY_E 10
  607. while ((uint32_t)(TCNT0 - pulse_start) < (MINIMUM_STEPPER_PULSE * (F_CPU / 1000000UL)) - CYCLES_EATEN_BY_E) { /* nada */ }
  608. #endif
  609. STOP_E_PULSE(0);
  610. #if E_STEPPERS > 1
  611. STOP_E_PULSE(1);
  612. #if E_STEPPERS > 2
  613. STOP_E_PULSE(2);
  614. #if E_STEPPERS > 3
  615. STOP_E_PULSE(3);
  616. #endif
  617. #endif
  618. #endif
  619. }
  620. }
  621. #endif // ADVANCE or LIN_ADVANCE
  622. void Stepper::init() {
  623. digipot_init(); //Initialize Digipot Motor Current
  624. microstep_init(); //Initialize Microstepping Pins
  625. // initialise TMC Steppers
  626. #if ENABLED(HAVE_TMCDRIVER)
  627. tmc_init();
  628. #endif
  629. // initialise L6470 Steppers
  630. #if ENABLED(HAVE_L6470DRIVER)
  631. L6470_init();
  632. #endif
  633. // Initialize Dir Pins
  634. #if HAS_X_DIR
  635. X_DIR_INIT;
  636. #endif
  637. #if HAS_X2_DIR
  638. X2_DIR_INIT;
  639. #endif
  640. #if HAS_Y_DIR
  641. Y_DIR_INIT;
  642. #if ENABLED(Y_DUAL_STEPPER_DRIVERS) && HAS_Y2_DIR
  643. Y2_DIR_INIT;
  644. #endif
  645. #endif
  646. #if HAS_Z_DIR
  647. Z_DIR_INIT;
  648. #if ENABLED(Z_DUAL_STEPPER_DRIVERS) && HAS_Z2_DIR
  649. Z2_DIR_INIT;
  650. #endif
  651. #endif
  652. #if HAS_E0_DIR
  653. E0_DIR_INIT;
  654. #endif
  655. #if HAS_E1_DIR
  656. E1_DIR_INIT;
  657. #endif
  658. #if HAS_E2_DIR
  659. E2_DIR_INIT;
  660. #endif
  661. #if HAS_E3_DIR
  662. E3_DIR_INIT;
  663. #endif
  664. //Initialize Enable Pins - steppers default to disabled.
  665. #if HAS_X_ENABLE
  666. X_ENABLE_INIT;
  667. if (!X_ENABLE_ON) X_ENABLE_WRITE(HIGH);
  668. #if ENABLED(DUAL_X_CARRIAGE) && HAS_X2_ENABLE
  669. X2_ENABLE_INIT;
  670. if (!X_ENABLE_ON) X2_ENABLE_WRITE(HIGH);
  671. #endif
  672. #endif
  673. #if HAS_Y_ENABLE
  674. Y_ENABLE_INIT;
  675. if (!Y_ENABLE_ON) Y_ENABLE_WRITE(HIGH);
  676. #if ENABLED(Y_DUAL_STEPPER_DRIVERS) && HAS_Y2_ENABLE
  677. Y2_ENABLE_INIT;
  678. if (!Y_ENABLE_ON) Y2_ENABLE_WRITE(HIGH);
  679. #endif
  680. #endif
  681. #if HAS_Z_ENABLE
  682. Z_ENABLE_INIT;
  683. if (!Z_ENABLE_ON) Z_ENABLE_WRITE(HIGH);
  684. #if ENABLED(Z_DUAL_STEPPER_DRIVERS) && HAS_Z2_ENABLE
  685. Z2_ENABLE_INIT;
  686. if (!Z_ENABLE_ON) Z2_ENABLE_WRITE(HIGH);
  687. #endif
  688. #endif
  689. #if HAS_E0_ENABLE
  690. E0_ENABLE_INIT;
  691. if (!E_ENABLE_ON) E0_ENABLE_WRITE(HIGH);
  692. #endif
  693. #if HAS_E1_ENABLE
  694. E1_ENABLE_INIT;
  695. if (!E_ENABLE_ON) E1_ENABLE_WRITE(HIGH);
  696. #endif
  697. #if HAS_E2_ENABLE
  698. E2_ENABLE_INIT;
  699. if (!E_ENABLE_ON) E2_ENABLE_WRITE(HIGH);
  700. #endif
  701. #if HAS_E3_ENABLE
  702. E3_ENABLE_INIT;
  703. if (!E_ENABLE_ON) E3_ENABLE_WRITE(HIGH);
  704. #endif
  705. //
  706. // Init endstops and pullups here
  707. //
  708. endstops.init();
  709. #define _STEP_INIT(AXIS) AXIS ##_STEP_INIT
  710. #define _WRITE_STEP(AXIS, HIGHLOW) AXIS ##_STEP_WRITE(HIGHLOW)
  711. #define _DISABLE(axis) disable_## axis()
  712. #define AXIS_INIT(axis, AXIS, PIN) \
  713. _STEP_INIT(AXIS); \
  714. _WRITE_STEP(AXIS, _INVERT_STEP_PIN(PIN)); \
  715. _DISABLE(axis)
  716. #define E_AXIS_INIT(NUM) AXIS_INIT(e## NUM, E## NUM, E)
  717. // Initialize Step Pins
  718. #if HAS_X_STEP
  719. #if ENABLED(X_DUAL_STEPPER_DRIVERS) || ENABLED(DUAL_X_CARRIAGE)
  720. X2_STEP_INIT;
  721. X2_STEP_WRITE(INVERT_X_STEP_PIN);
  722. #endif
  723. AXIS_INIT(x, X, X);
  724. #endif
  725. #if HAS_Y_STEP
  726. #if ENABLED(Y_DUAL_STEPPER_DRIVERS)
  727. Y2_STEP_INIT;
  728. Y2_STEP_WRITE(INVERT_Y_STEP_PIN);
  729. #endif
  730. AXIS_INIT(y, Y, Y);
  731. #endif
  732. #if HAS_Z_STEP
  733. #if ENABLED(Z_DUAL_STEPPER_DRIVERS)
  734. Z2_STEP_INIT;
  735. Z2_STEP_WRITE(INVERT_Z_STEP_PIN);
  736. #endif
  737. AXIS_INIT(z, Z, Z);
  738. #endif
  739. #if HAS_E0_STEP
  740. E_AXIS_INIT(0);
  741. #endif
  742. #if HAS_E1_STEP
  743. E_AXIS_INIT(1);
  744. #endif
  745. #if HAS_E2_STEP
  746. E_AXIS_INIT(2);
  747. #endif
  748. #if HAS_E3_STEP
  749. E_AXIS_INIT(3);
  750. #endif
  751. // waveform generation = 0100 = CTC
  752. CBI(TCCR1B, WGM13);
  753. SBI(TCCR1B, WGM12);
  754. CBI(TCCR1A, WGM11);
  755. CBI(TCCR1A, WGM10);
  756. // output mode = 00 (disconnected)
  757. TCCR1A &= ~(3 << COM1A0);
  758. TCCR1A &= ~(3 << COM1B0);
  759. // Set the timer pre-scaler
  760. // Generally we use a divider of 8, resulting in a 2MHz timer
  761. // frequency on a 16MHz MCU. If you are going to change this, be
  762. // sure to regenerate speed_lookuptable.h with
  763. // create_speed_lookuptable.py
  764. TCCR1B = (TCCR1B & ~(0x07 << CS10)) | (2 << CS10);
  765. OCR1A = 0x4000;
  766. TCNT1 = 0;
  767. ENABLE_STEPPER_DRIVER_INTERRUPT();
  768. #if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
  769. for (int i = 0; i < E_STEPPERS; i++) {
  770. e_steps[i] = 0;
  771. #if ENABLED(LIN_ADVANCE)
  772. current_adv_steps[i] = 0;
  773. #endif
  774. }
  775. #if defined(TCCR0A) && defined(WGM01)
  776. CBI(TCCR0A, WGM01);
  777. CBI(TCCR0A, WGM00);
  778. #endif
  779. SBI(TIMSK0, OCIE0A);
  780. #endif // ADVANCE or LIN_ADVANCE
  781. endstops.enable(true); // Start with endstops active. After homing they can be disabled
  782. sei();
  783. set_directions(); // Init directions to last_direction_bits = 0
  784. }
  785. /**
  786. * Block until all buffered steps are executed
  787. */
  788. void Stepper::synchronize() { while (planner.blocks_queued()) idle(); }
  789. /**
  790. * Set the stepper positions directly in steps
  791. *
  792. * The input is based on the typical per-axis XYZ steps.
  793. * For CORE machines XYZ needs to be translated to ABC.
  794. *
  795. * This allows get_axis_position_mm to correctly
  796. * derive the current XYZ position later on.
  797. */
  798. void Stepper::set_position(const long& x, const long& y, const long& z, const long& e) {
  799. CRITICAL_SECTION_START;
  800. #if ENABLED(COREXY)
  801. // corexy positioning
  802. // these equations follow the form of the dA and dB equations on http://www.corexy.com/theory.html
  803. count_position[A_AXIS] = x + y;
  804. count_position[B_AXIS] = x - y;
  805. count_position[Z_AXIS] = z;
  806. #elif ENABLED(COREXZ)
  807. // corexz planning
  808. count_position[A_AXIS] = x + z;
  809. count_position[Y_AXIS] = y;
  810. count_position[C_AXIS] = x - z;
  811. #elif ENABLED(COREYZ)
  812. // coreyz planning
  813. count_position[X_AXIS] = x;
  814. count_position[B_AXIS] = y + z;
  815. count_position[C_AXIS] = y - z;
  816. #else
  817. // default non-h-bot planning
  818. count_position[X_AXIS] = x;
  819. count_position[Y_AXIS] = y;
  820. count_position[Z_AXIS] = z;
  821. #endif
  822. count_position[E_AXIS] = e;
  823. CRITICAL_SECTION_END;
  824. }
  825. void Stepper::set_e_position(const long& e) {
  826. CRITICAL_SECTION_START;
  827. count_position[E_AXIS] = e;
  828. CRITICAL_SECTION_END;
  829. }
  830. /**
  831. * Get a stepper's position in steps.
  832. */
  833. long Stepper::position(AxisEnum axis) {
  834. CRITICAL_SECTION_START;
  835. long count_pos = count_position[axis];
  836. CRITICAL_SECTION_END;
  837. return count_pos;
  838. }
  839. /**
  840. * Get an axis position according to stepper position(s)
  841. * For CORE machines apply translation from ABC to XYZ.
  842. */
  843. float Stepper::get_axis_position_mm(AxisEnum axis) {
  844. float axis_steps;
  845. #if ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ)
  846. // Requesting one of the "core" axes?
  847. if (axis == CORE_AXIS_1 || axis == CORE_AXIS_2) {
  848. CRITICAL_SECTION_START;
  849. long pos1 = count_position[CORE_AXIS_1],
  850. pos2 = count_position[CORE_AXIS_2];
  851. CRITICAL_SECTION_END;
  852. // ((a1+a2)+(a1-a2))/2 -> (a1+a2+a1-a2)/2 -> (a1+a1)/2 -> a1
  853. // ((a1+a2)-(a1-a2))/2 -> (a1+a2-a1+a2)/2 -> (a2+a2)/2 -> a2
  854. axis_steps = (pos1 + ((axis == CORE_AXIS_1) ? pos2 : -pos2)) * 0.5f;
  855. }
  856. else
  857. axis_steps = position(axis);
  858. #else
  859. axis_steps = position(axis);
  860. #endif
  861. return axis_steps * planner.steps_to_mm[axis];
  862. }
  863. void Stepper::finish_and_disable() {
  864. synchronize();
  865. disable_all_steppers();
  866. }
  867. void Stepper::quick_stop() {
  868. cleaning_buffer_counter = 5000;
  869. DISABLE_STEPPER_DRIVER_INTERRUPT();
  870. while (planner.blocks_queued()) planner.discard_current_block();
  871. current_block = NULL;
  872. ENABLE_STEPPER_DRIVER_INTERRUPT();
  873. }
  874. void Stepper::endstop_triggered(AxisEnum axis) {
  875. #if ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ)
  876. float axis_pos = count_position[axis];
  877. if (axis == CORE_AXIS_1)
  878. axis_pos = (axis_pos + count_position[CORE_AXIS_2]) * 0.5;
  879. else if (axis == CORE_AXIS_2)
  880. axis_pos = (count_position[CORE_AXIS_1] - axis_pos) * 0.5;
  881. endstops_trigsteps[axis] = axis_pos;
  882. #else // !COREXY && !COREXZ && !COREYZ
  883. endstops_trigsteps[axis] = count_position[axis];
  884. #endif // !COREXY && !COREXZ && !COREYZ
  885. kill_current_block();
  886. }
  887. void Stepper::report_positions() {
  888. CRITICAL_SECTION_START;
  889. long xpos = count_position[X_AXIS],
  890. ypos = count_position[Y_AXIS],
  891. zpos = count_position[Z_AXIS];
  892. CRITICAL_SECTION_END;
  893. #if ENABLED(COREXY) || ENABLED(COREXZ) || IS_SCARA
  894. SERIAL_PROTOCOLPGM(MSG_COUNT_A);
  895. #else
  896. SERIAL_PROTOCOLPGM(MSG_COUNT_X);
  897. #endif
  898. SERIAL_PROTOCOL(xpos);
  899. #if ENABLED(COREXY) || ENABLED(COREYZ) || IS_SCARA
  900. SERIAL_PROTOCOLPGM(" B:");
  901. #else
  902. SERIAL_PROTOCOLPGM(" Y:");
  903. #endif
  904. SERIAL_PROTOCOL(ypos);
  905. #if ENABLED(COREXZ) || ENABLED(COREYZ)
  906. SERIAL_PROTOCOLPGM(" C:");
  907. #else
  908. SERIAL_PROTOCOLPGM(" Z:");
  909. #endif
  910. SERIAL_PROTOCOL(zpos);
  911. SERIAL_EOL;
  912. }
  913. #if ENABLED(BABYSTEPPING)
  914. // MUST ONLY BE CALLED BY AN ISR,
  915. // No other ISR should ever interrupt this!
  916. void Stepper::babystep(const uint8_t axis, const bool direction) {
  917. #define _ENABLE(axis) enable_## axis()
  918. #define _READ_DIR(AXIS) AXIS ##_DIR_READ
  919. #define _INVERT_DIR(AXIS) INVERT_## AXIS ##_DIR
  920. #define _APPLY_DIR(AXIS, INVERT) AXIS ##_APPLY_DIR(INVERT, true)
  921. #define BABYSTEP_AXIS(axis, AXIS, INVERT) { \
  922. _ENABLE(axis); \
  923. uint8_t old_pin = _READ_DIR(AXIS); \
  924. _APPLY_DIR(AXIS, _INVERT_DIR(AXIS)^direction^INVERT); \
  925. _APPLY_STEP(AXIS)(!_INVERT_STEP_PIN(AXIS), true); \
  926. delayMicroseconds(2); \
  927. _APPLY_STEP(AXIS)(_INVERT_STEP_PIN(AXIS), true); \
  928. _APPLY_DIR(AXIS, old_pin); \
  929. }
  930. switch (axis) {
  931. case X_AXIS:
  932. BABYSTEP_AXIS(x, X, false);
  933. break;
  934. case Y_AXIS:
  935. BABYSTEP_AXIS(y, Y, false);
  936. break;
  937. case Z_AXIS: {
  938. #if DISABLED(DELTA)
  939. BABYSTEP_AXIS(z, Z, BABYSTEP_INVERT_Z);
  940. #else // DELTA
  941. bool z_direction = direction ^ BABYSTEP_INVERT_Z;
  942. enable_x();
  943. enable_y();
  944. enable_z();
  945. uint8_t old_x_dir_pin = X_DIR_READ,
  946. old_y_dir_pin = Y_DIR_READ,
  947. old_z_dir_pin = Z_DIR_READ;
  948. //setup new step
  949. X_DIR_WRITE(INVERT_X_DIR ^ z_direction);
  950. Y_DIR_WRITE(INVERT_Y_DIR ^ z_direction);
  951. Z_DIR_WRITE(INVERT_Z_DIR ^ z_direction);
  952. //perform step
  953. X_STEP_WRITE(!INVERT_X_STEP_PIN);
  954. Y_STEP_WRITE(!INVERT_Y_STEP_PIN);
  955. Z_STEP_WRITE(!INVERT_Z_STEP_PIN);
  956. delayMicroseconds(2);
  957. X_STEP_WRITE(INVERT_X_STEP_PIN);
  958. Y_STEP_WRITE(INVERT_Y_STEP_PIN);
  959. Z_STEP_WRITE(INVERT_Z_STEP_PIN);
  960. //get old pin state back.
  961. X_DIR_WRITE(old_x_dir_pin);
  962. Y_DIR_WRITE(old_y_dir_pin);
  963. Z_DIR_WRITE(old_z_dir_pin);
  964. #endif
  965. } break;
  966. default: break;
  967. }
  968. }
  969. #endif //BABYSTEPPING
  970. /**
  971. * Software-controlled Stepper Motor Current
  972. */
  973. #if HAS_DIGIPOTSS
  974. // From Arduino DigitalPotControl example
  975. void Stepper::digitalPotWrite(int address, int value) {
  976. digitalWrite(DIGIPOTSS_PIN, LOW); // take the SS pin low to select the chip
  977. SPI.transfer(address); // send in the address and value via SPI:
  978. SPI.transfer(value);
  979. digitalWrite(DIGIPOTSS_PIN, HIGH); // take the SS pin high to de-select the chip:
  980. //delay(10);
  981. }
  982. #endif //HAS_DIGIPOTSS
  983. void Stepper::digipot_init() {
  984. #if HAS_DIGIPOTSS
  985. const uint8_t digipot_motor_current[] = DIGIPOT_MOTOR_CURRENT;
  986. SPI.begin();
  987. pinMode(DIGIPOTSS_PIN, OUTPUT);
  988. for (uint8_t i = 0; i < COUNT(digipot_motor_current); i++) {
  989. //digitalPotWrite(digipot_ch[i], digipot_motor_current[i]);
  990. digipot_current(i, digipot_motor_current[i]);
  991. }
  992. #endif
  993. #if HAS_MOTOR_CURRENT_PWM
  994. #if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
  995. pinMode(MOTOR_CURRENT_PWM_XY_PIN, OUTPUT);
  996. digipot_current(0, motor_current_setting[0]);
  997. #endif
  998. #if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
  999. pinMode(MOTOR_CURRENT_PWM_Z_PIN, OUTPUT);
  1000. digipot_current(1, motor_current_setting[1]);
  1001. #endif
  1002. #if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
  1003. pinMode(MOTOR_CURRENT_PWM_E_PIN, OUTPUT);
  1004. digipot_current(2, motor_current_setting[2]);
  1005. #endif
  1006. //Set timer5 to 31khz so the PWM of the motor power is as constant as possible. (removes a buzzing noise)
  1007. TCCR5B = (TCCR5B & ~(_BV(CS50) | _BV(CS51) | _BV(CS52))) | _BV(CS50);
  1008. #endif
  1009. }
  1010. void Stepper::digipot_current(uint8_t driver, int current) {
  1011. #if HAS_DIGIPOTSS
  1012. const uint8_t digipot_ch[] = DIGIPOT_CHANNELS;
  1013. digitalPotWrite(digipot_ch[driver], current);
  1014. #elif HAS_MOTOR_CURRENT_PWM
  1015. #define _WRITE_CURRENT_PWM(P) analogWrite(P, 255L * current / (MOTOR_CURRENT_PWM_RANGE))
  1016. switch (driver) {
  1017. #if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
  1018. case 0: _WRITE_CURRENT_PWM(MOTOR_CURRENT_PWM_XY_PIN); break;
  1019. #endif
  1020. #if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
  1021. case 1: _WRITE_CURRENT_PWM(MOTOR_CURRENT_PWM_Z_PIN); break;
  1022. #endif
  1023. #if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
  1024. case 2: _WRITE_CURRENT_PWM(MOTOR_CURRENT_PWM_E_PIN); break;
  1025. #endif
  1026. }
  1027. #else
  1028. UNUSED(driver);
  1029. UNUSED(current);
  1030. #endif
  1031. }
  1032. void Stepper::microstep_init() {
  1033. #if HAS_MICROSTEPS_E1
  1034. pinMode(E1_MS1_PIN, OUTPUT);
  1035. pinMode(E1_MS2_PIN, OUTPUT);
  1036. #endif
  1037. #if HAS_MICROSTEPS
  1038. pinMode(X_MS1_PIN, OUTPUT);
  1039. pinMode(X_MS2_PIN, OUTPUT);
  1040. pinMode(Y_MS1_PIN, OUTPUT);
  1041. pinMode(Y_MS2_PIN, OUTPUT);
  1042. pinMode(Z_MS1_PIN, OUTPUT);
  1043. pinMode(Z_MS2_PIN, OUTPUT);
  1044. pinMode(E0_MS1_PIN, OUTPUT);
  1045. pinMode(E0_MS2_PIN, OUTPUT);
  1046. const uint8_t microstep_modes[] = MICROSTEP_MODES;
  1047. for (uint16_t i = 0; i < COUNT(microstep_modes); i++)
  1048. microstep_mode(i, microstep_modes[i]);
  1049. #endif
  1050. }
  1051. /**
  1052. * Software-controlled Microstepping
  1053. */
  1054. void Stepper::microstep_ms(uint8_t driver, int8_t ms1, int8_t ms2) {
  1055. if (ms1 >= 0) switch (driver) {
  1056. case 0: digitalWrite(X_MS1_PIN, ms1); break;
  1057. case 1: digitalWrite(Y_MS1_PIN, ms1); break;
  1058. case 2: digitalWrite(Z_MS1_PIN, ms1); break;
  1059. case 3: digitalWrite(E0_MS1_PIN, ms1); break;
  1060. #if HAS_MICROSTEPS_E1
  1061. case 4: digitalWrite(E1_MS1_PIN, ms1); break;
  1062. #endif
  1063. }
  1064. if (ms2 >= 0) switch (driver) {
  1065. case 0: digitalWrite(X_MS2_PIN, ms2); break;
  1066. case 1: digitalWrite(Y_MS2_PIN, ms2); break;
  1067. case 2: digitalWrite(Z_MS2_PIN, ms2); break;
  1068. case 3: digitalWrite(E0_MS2_PIN, ms2); break;
  1069. #if PIN_EXISTS(E1_MS2)
  1070. case 4: digitalWrite(E1_MS2_PIN, ms2); break;
  1071. #endif
  1072. }
  1073. }
  1074. void Stepper::microstep_mode(uint8_t driver, uint8_t stepping_mode) {
  1075. switch (stepping_mode) {
  1076. case 1: microstep_ms(driver, MICROSTEP1); break;
  1077. case 2: microstep_ms(driver, MICROSTEP2); break;
  1078. case 4: microstep_ms(driver, MICROSTEP4); break;
  1079. case 8: microstep_ms(driver, MICROSTEP8); break;
  1080. case 16: microstep_ms(driver, MICROSTEP16); break;
  1081. }
  1082. }
  1083. void Stepper::microstep_readings() {
  1084. SERIAL_PROTOCOLLNPGM("MS1,MS2 Pins");
  1085. SERIAL_PROTOCOLPGM("X: ");
  1086. SERIAL_PROTOCOL(digitalRead(X_MS1_PIN));
  1087. SERIAL_PROTOCOLLN(digitalRead(X_MS2_PIN));
  1088. SERIAL_PROTOCOLPGM("Y: ");
  1089. SERIAL_PROTOCOL(digitalRead(Y_MS1_PIN));
  1090. SERIAL_PROTOCOLLN(digitalRead(Y_MS2_PIN));
  1091. SERIAL_PROTOCOLPGM("Z: ");
  1092. SERIAL_PROTOCOL(digitalRead(Z_MS1_PIN));
  1093. SERIAL_PROTOCOLLN(digitalRead(Z_MS2_PIN));
  1094. SERIAL_PROTOCOLPGM("E0: ");
  1095. SERIAL_PROTOCOL(digitalRead(E0_MS1_PIN));
  1096. SERIAL_PROTOCOLLN(digitalRead(E0_MS2_PIN));
  1097. #if HAS_MICROSTEPS_E1
  1098. SERIAL_PROTOCOLPGM("E1: ");
  1099. SERIAL_PROTOCOL(digitalRead(E1_MS1_PIN));
  1100. SERIAL_PROTOCOLLN(digitalRead(E1_MS2_PIN));
  1101. #endif
  1102. }
  1103. #if ENABLED(LIN_ADVANCE)
  1104. void Stepper::advance_M905(const float &k) {
  1105. if (k >= 0) extruder_advance_k = k;
  1106. SERIAL_ECHO_START;
  1107. SERIAL_ECHOPAIR("Advance factor: ", extruder_advance_k);
  1108. SERIAL_EOL;
  1109. }
  1110. #endif // LIN_ADVANCE