temperature.cpp 70 KB

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  1. /*
  2. temperature.c - temperature control
  3. Part of Marlin
  4. Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
  5. This program is free software: you can redistribute it and/or modify
  6. it under the terms of the GNU General Public License as published by
  7. the Free Software Foundation, either version 3 of the License, or
  8. (at your option) any later version.
  9. This program is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. GNU General Public License for more details.
  13. You should have received a copy of the GNU General Public License
  14. along with this program. If not, see <http://www.gnu.org/licenses/>.
  15. */
  16. /*
  17. This firmware is a mashup between Sprinter and grbl.
  18. (https://github.com/kliment/Sprinter)
  19. (https://github.com/simen/grbl/tree)
  20. It has preliminary support for Matthew Roberts advance algorithm
  21. http://reprap.org/pipermail/reprap-dev/2011-May/003323.html
  22. */
  23. #include "Marlin.h"
  24. #include "cmdqueue.h"
  25. #include "ultralcd.h"
  26. #include "sound.h"
  27. #include "temperature.h"
  28. #include "cardreader.h"
  29. #include "Sd2PinMap.h"
  30. #include <avr/wdt.h>
  31. #include "adc.h"
  32. #include "ConfigurationStore.h"
  33. #include "messages.h"
  34. #include "Timer.h"
  35. #include "Configuration_prusa.h"
  36. #include "config.h"
  37. //===========================================================================
  38. //=============================public variables============================
  39. //===========================================================================
  40. int target_temperature[EXTRUDERS] = { 0 };
  41. int target_temperature_bed = 0;
  42. int current_temperature_raw[EXTRUDERS] = { 0 };
  43. float current_temperature[EXTRUDERS] = { 0.0 };
  44. #ifdef PINDA_THERMISTOR
  45. uint16_t current_temperature_raw_pinda = 0 ; //value with more averaging applied
  46. uint16_t current_temperature_raw_pinda_fast = 0; //value read from adc
  47. float current_temperature_pinda = 0.0;
  48. #endif //PINDA_THERMISTOR
  49. #ifdef AMBIENT_THERMISTOR
  50. int current_temperature_raw_ambient = 0 ;
  51. float current_temperature_ambient = 0.0;
  52. #endif //AMBIENT_THERMISTOR
  53. #ifdef VOLT_PWR_PIN
  54. int current_voltage_raw_pwr = 0;
  55. #endif
  56. #ifdef VOLT_BED_PIN
  57. int current_voltage_raw_bed = 0;
  58. #endif
  59. #ifdef IR_SENSOR_ANALOG
  60. uint16_t current_voltage_raw_IR = 0;
  61. #endif //IR_SENSOR_ANALOG
  62. int current_temperature_bed_raw = 0;
  63. float current_temperature_bed = 0.0;
  64. #ifdef PIDTEMP
  65. float _Kp, _Ki, _Kd;
  66. int pid_cycle, pid_number_of_cycles;
  67. bool pid_tuning_finished = false;
  68. #ifdef PID_ADD_EXTRUSION_RATE
  69. float Kc=DEFAULT_Kc;
  70. #endif
  71. #endif //PIDTEMP
  72. #ifdef FAN_SOFT_PWM
  73. unsigned char fanSpeedSoftPwm;
  74. #endif
  75. #ifdef FANCHECK
  76. volatile uint8_t fan_check_error = EFCE_OK;
  77. #endif
  78. unsigned char soft_pwm_bed;
  79. #ifdef BABYSTEPPING
  80. volatile int babystepsTodo[3]={0,0,0};
  81. #endif
  82. //===========================================================================
  83. //=============================private variables============================
  84. //===========================================================================
  85. static volatile bool temp_meas_ready = false;
  86. #ifdef PIDTEMP
  87. //static cannot be external:
  88. static float iState_sum[EXTRUDERS] = { 0 };
  89. static float dState_last[EXTRUDERS] = { 0 };
  90. static float pTerm[EXTRUDERS];
  91. static float iTerm[EXTRUDERS];
  92. static float dTerm[EXTRUDERS];
  93. //int output;
  94. static float pid_error[EXTRUDERS];
  95. static float iState_sum_min[EXTRUDERS];
  96. static float iState_sum_max[EXTRUDERS];
  97. // static float pid_input[EXTRUDERS];
  98. // static float pid_output[EXTRUDERS];
  99. static bool pid_reset[EXTRUDERS];
  100. #endif //PIDTEMP
  101. #ifdef PIDTEMPBED
  102. //static cannot be external:
  103. static float temp_iState_bed = { 0 };
  104. static float temp_dState_bed = { 0 };
  105. static float pTerm_bed;
  106. static float iTerm_bed;
  107. static float dTerm_bed;
  108. //int output;
  109. static float pid_error_bed;
  110. static float temp_iState_min_bed;
  111. static float temp_iState_max_bed;
  112. #else //PIDTEMPBED
  113. static unsigned long previous_millis_bed_heater;
  114. #endif //PIDTEMPBED
  115. static unsigned char soft_pwm[EXTRUDERS];
  116. #ifdef FAN_SOFT_PWM
  117. static unsigned char soft_pwm_fan;
  118. #endif
  119. uint8_t fanSpeedBckp = 255;
  120. #if (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1)
  121. unsigned long extruder_autofan_last_check = _millis();
  122. bool fan_measuring = false;
  123. uint8_t fanState = 0;
  124. #ifdef EXTRUDER_ALTFAN_DETECT
  125. struct
  126. {
  127. uint8_t isAltfan : 1;
  128. uint8_t altfanOverride : 1;
  129. } altfanStatus;
  130. #endif //EXTRUDER_ALTFAN_DETECT
  131. #endif
  132. #if EXTRUDERS > 3
  133. # error Unsupported number of extruders
  134. #elif EXTRUDERS > 2
  135. # define ARRAY_BY_EXTRUDERS(v1, v2, v3) { v1, v2, v3 }
  136. #elif EXTRUDERS > 1
  137. # define ARRAY_BY_EXTRUDERS(v1, v2, v3) { v1, v2 }
  138. #else
  139. # define ARRAY_BY_EXTRUDERS(v1, v2, v3) { v1 }
  140. #endif
  141. static ShortTimer oTimer4minTempHeater,oTimer4minTempBed;
  142. // Init min and max temp with extreme values to prevent false errors during startup
  143. static int minttemp_raw[EXTRUDERS] = ARRAY_BY_EXTRUDERS( HEATER_0_RAW_LO_TEMP , HEATER_1_RAW_LO_TEMP , HEATER_2_RAW_LO_TEMP );
  144. static int maxttemp_raw[EXTRUDERS] = ARRAY_BY_EXTRUDERS( HEATER_0_RAW_HI_TEMP , HEATER_1_RAW_HI_TEMP , HEATER_2_RAW_HI_TEMP );
  145. static int minttemp[EXTRUDERS] = ARRAY_BY_EXTRUDERS( 0, 0, 0 );
  146. static int maxttemp[EXTRUDERS] = ARRAY_BY_EXTRUDERS( 16383, 16383, 16383 );
  147. #ifdef BED_MINTEMP
  148. static int bed_minttemp_raw = HEATER_BED_RAW_LO_TEMP;
  149. #endif
  150. #ifdef BED_MAXTEMP
  151. static int bed_maxttemp_raw = HEATER_BED_RAW_HI_TEMP;
  152. #endif
  153. #ifdef AMBIENT_MINTEMP
  154. static int ambient_minttemp_raw = AMBIENT_RAW_LO_TEMP;
  155. #endif
  156. #ifdef AMBIENT_MAXTEMP
  157. static int ambient_maxttemp_raw = AMBIENT_RAW_HI_TEMP;
  158. #endif
  159. static void *heater_ttbl_map[EXTRUDERS] = ARRAY_BY_EXTRUDERS( (void *)HEATER_0_TEMPTABLE, (void *)HEATER_1_TEMPTABLE, (void *)HEATER_2_TEMPTABLE );
  160. static uint8_t heater_ttbllen_map[EXTRUDERS] = ARRAY_BY_EXTRUDERS( HEATER_0_TEMPTABLE_LEN, HEATER_1_TEMPTABLE_LEN, HEATER_2_TEMPTABLE_LEN );
  161. static float analog2temp(int raw, uint8_t e);
  162. static float analog2tempBed(int raw);
  163. static float analog2tempAmbient(int raw);
  164. static void updateTemperaturesFromRawValues();
  165. enum TempRunawayStates
  166. {
  167. TempRunaway_INACTIVE = 0,
  168. TempRunaway_PREHEAT = 1,
  169. TempRunaway_ACTIVE = 2,
  170. };
  171. #ifndef SOFT_PWM_SCALE
  172. #define SOFT_PWM_SCALE 0
  173. #endif
  174. //===========================================================================
  175. //============================= functions ============================
  176. //===========================================================================
  177. #if (defined (TEMP_RUNAWAY_BED_HYSTERESIS) && TEMP_RUNAWAY_BED_TIMEOUT > 0) || (defined (TEMP_RUNAWAY_EXTRUDER_HYSTERESIS) && TEMP_RUNAWAY_EXTRUDER_TIMEOUT > 0)
  178. static float temp_runaway_status[4];
  179. static float temp_runaway_target[4];
  180. static float temp_runaway_timer[4];
  181. static int temp_runaway_error_counter[4];
  182. static void temp_runaway_check(int _heater_id, float _target_temperature, float _current_temperature, float _output, bool _isbed);
  183. static void temp_runaway_stop(bool isPreheat, bool isBed);
  184. #endif
  185. #ifdef EXTRUDER_ALTFAN_DETECT
  186. ISR(INT6_vect) {
  187. fan_edge_counter[0]++;
  188. }
  189. bool extruder_altfan_detect()
  190. {
  191. setExtruderAutoFanState(3);
  192. SET_INPUT(TACH_0);
  193. uint8_t overrideVal = eeprom_read_byte((uint8_t *)EEPROM_ALTFAN_OVERRIDE);
  194. if (overrideVal == EEPROM_EMPTY_VALUE)
  195. {
  196. overrideVal = (calibration_status() == CALIBRATION_STATUS_CALIBRATED) ? 1 : 0;
  197. eeprom_update_byte((uint8_t *)EEPROM_ALTFAN_OVERRIDE, overrideVal);
  198. }
  199. altfanStatus.altfanOverride = overrideVal;
  200. CRITICAL_SECTION_START;
  201. EICRB &= ~(1 << ISC61);
  202. EICRB |= (1 << ISC60);
  203. EIMSK |= (1 << INT6);
  204. fan_edge_counter[0] = 0;
  205. CRITICAL_SECTION_END;
  206. extruder_autofan_last_check = _millis();
  207. _delay(1000);
  208. EIMSK &= ~(1 << INT6);
  209. countFanSpeed();
  210. altfanStatus.isAltfan = fan_speed[0] > 100;
  211. setExtruderAutoFanState(1);
  212. return altfanStatus.isAltfan;
  213. }
  214. void altfanOverride_toggle()
  215. {
  216. altfanStatus.altfanOverride = !altfanStatus.altfanOverride;
  217. eeprom_update_byte((uint8_t *)EEPROM_ALTFAN_OVERRIDE, altfanStatus.altfanOverride);
  218. }
  219. bool altfanOverride_get()
  220. {
  221. return altfanStatus.altfanOverride;
  222. }
  223. #endif //EXTRUDER_ALTFAN_DETECT
  224. // return "false", if all extruder-heaters are 'off' (ie. "true", if any heater is 'on')
  225. bool checkAllHotends(void)
  226. {
  227. bool result=false;
  228. for(int i=0;i<EXTRUDERS;i++) result=(result||(target_temperature[i]!=0));
  229. return(result);
  230. }
  231. void PID_autotune(float temp, int extruder, int ncycles)
  232. {
  233. pid_number_of_cycles = ncycles;
  234. pid_tuning_finished = false;
  235. float input = 0.0;
  236. pid_cycle=0;
  237. bool heating = true;
  238. unsigned long temp_millis = _millis();
  239. unsigned long t1=temp_millis;
  240. unsigned long t2=temp_millis;
  241. long t_high = 0;
  242. long t_low = 0;
  243. long bias, d;
  244. float Ku, Tu;
  245. float max = 0, min = 10000;
  246. uint8_t safety_check_cycles = 0;
  247. const uint8_t safety_check_cycles_count = (extruder < 0) ? 45 : 10; //10 cycles / 20s delay for extruder and 45 cycles / 90s for heatbed
  248. float temp_ambient;
  249. #if (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1)
  250. unsigned long extruder_autofan_last_check = _millis();
  251. #endif
  252. if ((extruder >= EXTRUDERS)
  253. #if (TEMP_BED_PIN <= -1)
  254. ||(extruder < 0)
  255. #endif
  256. ){
  257. SERIAL_ECHOLN("PID Autotune failed. Bad extruder number.");
  258. pid_tuning_finished = true;
  259. pid_cycle = 0;
  260. return;
  261. }
  262. SERIAL_ECHOLN("PID Autotune start");
  263. disable_heater(); // switch off all heaters.
  264. if (extruder<0)
  265. {
  266. soft_pwm_bed = (MAX_BED_POWER)/2;
  267. timer02_set_pwm0(soft_pwm_bed << 1);
  268. bias = d = (MAX_BED_POWER)/2;
  269. target_temperature_bed = (int)temp; // to display the requested target bed temperature properly on the main screen
  270. }
  271. else
  272. {
  273. soft_pwm[extruder] = (PID_MAX)/2;
  274. bias = d = (PID_MAX)/2;
  275. target_temperature[extruder] = (int)temp; // to display the requested target extruder temperature properly on the main screen
  276. }
  277. for(;;) {
  278. #ifdef WATCHDOG
  279. wdt_reset();
  280. #endif //WATCHDOG
  281. if(temp_meas_ready == true) { // temp sample ready
  282. updateTemperaturesFromRawValues();
  283. input = (extruder<0)?current_temperature_bed:current_temperature[extruder];
  284. max=max(max,input);
  285. min=min(min,input);
  286. #if (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1)
  287. if(_millis() - extruder_autofan_last_check > 2500) {
  288. checkExtruderAutoFans();
  289. extruder_autofan_last_check = _millis();
  290. }
  291. #endif
  292. if(heating == true && input > temp) {
  293. if(_millis() - t2 > 5000) {
  294. heating=false;
  295. if (extruder<0)
  296. {
  297. soft_pwm_bed = (bias - d) >> 1;
  298. timer02_set_pwm0(soft_pwm_bed << 1);
  299. }
  300. else
  301. soft_pwm[extruder] = (bias - d) >> 1;
  302. t1=_millis();
  303. t_high=t1 - t2;
  304. max=temp;
  305. }
  306. }
  307. if(heating == false && input < temp) {
  308. if(_millis() - t1 > 5000) {
  309. heating=true;
  310. t2=_millis();
  311. t_low=t2 - t1;
  312. if(pid_cycle > 0) {
  313. bias += (d*(t_high - t_low))/(t_low + t_high);
  314. bias = constrain(bias, 20 ,(extruder<0?(MAX_BED_POWER):(PID_MAX))-20);
  315. if(bias > (extruder<0?(MAX_BED_POWER):(PID_MAX))/2) d = (extruder<0?(MAX_BED_POWER):(PID_MAX)) - 1 - bias;
  316. else d = bias;
  317. SERIAL_PROTOCOLPGM(" bias: "); SERIAL_PROTOCOL(bias);
  318. SERIAL_PROTOCOLPGM(" d: "); SERIAL_PROTOCOL(d);
  319. SERIAL_PROTOCOLPGM(" min: "); SERIAL_PROTOCOL(min);
  320. SERIAL_PROTOCOLPGM(" max: "); SERIAL_PROTOCOLLN(max);
  321. if(pid_cycle > 2) {
  322. Ku = (4.0*d)/(3.14159*(max-min)/2.0);
  323. Tu = ((float)(t_low + t_high)/1000.0);
  324. SERIAL_PROTOCOLPGM(" Ku: "); SERIAL_PROTOCOL(Ku);
  325. SERIAL_PROTOCOLPGM(" Tu: "); SERIAL_PROTOCOLLN(Tu);
  326. _Kp = 0.6*Ku;
  327. _Ki = 2*_Kp/Tu;
  328. _Kd = _Kp*Tu/8;
  329. SERIAL_PROTOCOLLNPGM(" Classic PID ");
  330. SERIAL_PROTOCOLPGM(" Kp: "); SERIAL_PROTOCOLLN(_Kp);
  331. SERIAL_PROTOCOLPGM(" Ki: "); SERIAL_PROTOCOLLN(_Ki);
  332. SERIAL_PROTOCOLPGM(" Kd: "); SERIAL_PROTOCOLLN(_Kd);
  333. /*
  334. _Kp = 0.33*Ku;
  335. _Ki = _Kp/Tu;
  336. _Kd = _Kp*Tu/3;
  337. SERIAL_PROTOCOLLNPGM(" Some overshoot ");
  338. SERIAL_PROTOCOLPGM(" Kp: "); SERIAL_PROTOCOLLN(_Kp);
  339. SERIAL_PROTOCOLPGM(" Ki: "); SERIAL_PROTOCOLLN(_Ki);
  340. SERIAL_PROTOCOLPGM(" Kd: "); SERIAL_PROTOCOLLN(_Kd);
  341. _Kp = 0.2*Ku;
  342. _Ki = 2*_Kp/Tu;
  343. _Kd = _Kp*Tu/3;
  344. SERIAL_PROTOCOLLNPGM(" No overshoot ");
  345. SERIAL_PROTOCOLPGM(" Kp: "); SERIAL_PROTOCOLLN(_Kp);
  346. SERIAL_PROTOCOLPGM(" Ki: "); SERIAL_PROTOCOLLN(_Ki);
  347. SERIAL_PROTOCOLPGM(" Kd: "); SERIAL_PROTOCOLLN(_Kd);
  348. */
  349. }
  350. }
  351. if (extruder<0)
  352. {
  353. soft_pwm_bed = (bias + d) >> 1;
  354. timer02_set_pwm0(soft_pwm_bed << 1);
  355. }
  356. else
  357. soft_pwm[extruder] = (bias + d) >> 1;
  358. pid_cycle++;
  359. min=temp;
  360. }
  361. }
  362. }
  363. if(input > (temp + 20)) {
  364. SERIAL_PROTOCOLLNPGM("PID Autotune failed! Temperature too high");
  365. pid_tuning_finished = true;
  366. pid_cycle = 0;
  367. return;
  368. }
  369. if(_millis() - temp_millis > 2000) {
  370. int p;
  371. if (extruder<0){
  372. p=soft_pwm_bed;
  373. SERIAL_PROTOCOLPGM("B:");
  374. }else{
  375. p=soft_pwm[extruder];
  376. SERIAL_PROTOCOLPGM("T:");
  377. }
  378. SERIAL_PROTOCOL(input);
  379. SERIAL_PROTOCOLPGM(" @:");
  380. SERIAL_PROTOCOLLN(p);
  381. if (safety_check_cycles == 0) { //save ambient temp
  382. temp_ambient = input;
  383. //SERIAL_ECHOPGM("Ambient T: ");
  384. //MYSERIAL.println(temp_ambient);
  385. safety_check_cycles++;
  386. }
  387. else if (safety_check_cycles < safety_check_cycles_count) { //delay
  388. safety_check_cycles++;
  389. }
  390. else if (safety_check_cycles == safety_check_cycles_count){ //check that temperature is rising
  391. safety_check_cycles++;
  392. //SERIAL_ECHOPGM("Time from beginning: ");
  393. //MYSERIAL.print(safety_check_cycles_count * 2);
  394. //SERIAL_ECHOPGM("s. Difference between current and ambient T: ");
  395. //MYSERIAL.println(input - temp_ambient);
  396. if (abs(input - temp_ambient) < 5.0) {
  397. temp_runaway_stop(false, (extruder<0));
  398. pid_tuning_finished = true;
  399. return;
  400. }
  401. }
  402. temp_millis = _millis();
  403. }
  404. if(((_millis() - t1) + (_millis() - t2)) > (10L*60L*1000L*2L)) {
  405. SERIAL_PROTOCOLLNPGM("PID Autotune failed! timeout");
  406. pid_tuning_finished = true;
  407. pid_cycle = 0;
  408. return;
  409. }
  410. if(pid_cycle > ncycles) {
  411. SERIAL_PROTOCOLLNPGM("PID Autotune finished! Put the last Kp, Ki and Kd constants from above into Configuration.h");
  412. pid_tuning_finished = true;
  413. pid_cycle = 0;
  414. return;
  415. }
  416. lcd_update(0);
  417. }
  418. }
  419. void updatePID()
  420. {
  421. #ifdef PIDTEMP
  422. for(uint_least8_t e = 0; e < EXTRUDERS; e++) {
  423. iState_sum_max[e] = PID_INTEGRAL_DRIVE_MAX / cs.Ki;
  424. }
  425. #endif
  426. #ifdef PIDTEMPBED
  427. temp_iState_max_bed = PID_INTEGRAL_DRIVE_MAX / cs.bedKi;
  428. #endif
  429. }
  430. int getHeaterPower(int heater) {
  431. if (heater<0)
  432. return soft_pwm_bed;
  433. return soft_pwm[heater];
  434. }
  435. #if (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1)
  436. #if defined(FAN_PIN) && FAN_PIN > -1
  437. #if EXTRUDER_0_AUTO_FAN_PIN == FAN_PIN
  438. #error "You cannot set EXTRUDER_0_AUTO_FAN_PIN equal to FAN_PIN"
  439. #endif
  440. #endif
  441. void setExtruderAutoFanState(uint8_t state)
  442. {
  443. //If bit 1 is set (0x02), then the extruder fan speed won't be adjusted according to temperature. Useful for forcing
  444. //the fan to either On or Off during certain tests/errors.
  445. fanState = state;
  446. newFanSpeed = 0;
  447. if (fanState & 0x01)
  448. {
  449. #ifdef EXTRUDER_ALTFAN_DETECT
  450. if (altfanStatus.isAltfan && !altfanStatus.altfanOverride) newFanSpeed = EXTRUDER_ALTFAN_SPEED_SILENT;
  451. else newFanSpeed = EXTRUDER_AUTO_FAN_SPEED;
  452. #else //EXTRUDER_ALTFAN_DETECT
  453. newFanSpeed = EXTRUDER_AUTO_FAN_SPEED;
  454. #endif //EXTRUDER_ALTFAN_DETECT
  455. }
  456. timer4_set_fan0(newFanSpeed);
  457. }
  458. #if (defined(FANCHECK) && (((defined(TACH_0) && (TACH_0 >-1)) || (defined(TACH_1) && (TACH_1 > -1)))))
  459. void countFanSpeed()
  460. {
  461. //SERIAL_ECHOPGM("edge counter 1:"); MYSERIAL.println(fan_edge_counter[1]);
  462. fan_speed[0] = (fan_edge_counter[0] * (float(250) / (_millis() - extruder_autofan_last_check)));
  463. fan_speed[1] = (fan_edge_counter[1] * (float(250) / (_millis() - extruder_autofan_last_check)));
  464. /*SERIAL_ECHOPGM("time interval: "); MYSERIAL.println(_millis() - extruder_autofan_last_check);
  465. SERIAL_ECHOPGM("extruder fan speed:"); MYSERIAL.print(fan_speed[0]); SERIAL_ECHOPGM("; edge counter:"); MYSERIAL.println(fan_edge_counter[0]);
  466. SERIAL_ECHOPGM("print fan speed:"); MYSERIAL.print(fan_speed[1]); SERIAL_ECHOPGM("; edge counter:"); MYSERIAL.println(fan_edge_counter[1]);
  467. SERIAL_ECHOLNPGM(" ");*/
  468. fan_edge_counter[0] = 0;
  469. fan_edge_counter[1] = 0;
  470. }
  471. void checkFanSpeed()
  472. {
  473. uint8_t max_print_fan_errors = 0;
  474. uint8_t max_extruder_fan_errors = 0;
  475. #ifdef FAN_SOFT_PWM
  476. max_print_fan_errors = 3; //15 seconds
  477. max_extruder_fan_errors = 4; //20seconds
  478. #else //FAN_SOFT_PWM
  479. max_print_fan_errors = 15; //15 seconds
  480. max_extruder_fan_errors = 10; //10 seconds
  481. #endif //FAN_SOFT_PWM
  482. if(fans_check_enabled != false)
  483. fans_check_enabled = (eeprom_read_byte((uint8_t*)EEPROM_FAN_CHECK_ENABLED) > 0);
  484. static unsigned char fan_speed_errors[2] = { 0,0 };
  485. #if (defined(FANCHECK) && defined(TACH_0) && (TACH_0 >-1))
  486. if ((fan_speed[0] < 20) && (current_temperature[0] > EXTRUDER_AUTO_FAN_TEMPERATURE)){ fan_speed_errors[0]++;}
  487. else{
  488. fan_speed_errors[0] = 0;
  489. host_keepalive();
  490. }
  491. #endif
  492. #if (defined(FANCHECK) && defined(TACH_1) && (TACH_1 >-1))
  493. if ((fan_speed[1] < 5) && ((blocks_queued() ? block_buffer[block_buffer_tail].fan_speed : fanSpeed) > MIN_PRINT_FAN_SPEED)) fan_speed_errors[1]++;
  494. else fan_speed_errors[1] = 0;
  495. #endif
  496. // drop the fan_check_error flag when both fans are ok
  497. if( fan_speed_errors[0] == 0 && fan_speed_errors[1] == 0 && fan_check_error == EFCE_REPORTED){
  498. // we may even send some info to the LCD from here
  499. fan_check_error = EFCE_FIXED;
  500. }
  501. if ((fan_check_error == EFCE_FIXED) && !PRINTER_ACTIVE){
  502. fan_check_error = EFCE_OK; //if the issue is fixed while the printer is doing nothing, reenable processing immediately.
  503. lcd_reset_alert_level(); //for another fan speed error
  504. }
  505. if ((fan_speed_errors[0] > max_extruder_fan_errors) && fans_check_enabled && (fan_check_error == EFCE_OK)) {
  506. fan_speed_errors[0] = 0;
  507. fanSpeedError(0); //extruder fan
  508. }
  509. if ((fan_speed_errors[1] > max_print_fan_errors) && fans_check_enabled && (fan_check_error == EFCE_OK)) {
  510. fan_speed_errors[1] = 0;
  511. fanSpeedError(1); //print fan
  512. }
  513. }
  514. //! Prints serialMsg to serial port, displays lcdMsg onto the LCD and beeps.
  515. //! Extracted from fanSpeedError to save some space.
  516. //! @param serialMsg pointer into PROGMEM, this text will be printed to the serial port
  517. //! @param lcdMsg pointer into PROGMEM, this text will be printed onto the LCD
  518. static void fanSpeedErrorBeep(const char *serialMsg, const char *lcdMsg){
  519. SERIAL_ECHOLNRPGM(serialMsg);
  520. if (get_message_level() == 0) {
  521. Sound_MakeCustom(200,0,true);
  522. LCD_ALERTMESSAGERPGM(lcdMsg);
  523. }
  524. }
  525. void fanSpeedError(unsigned char _fan) {
  526. if (get_message_level() != 0 && isPrintPaused) return;
  527. //to ensure that target temp. is not set to zero in case that we are resuming print
  528. if (card.sdprinting || is_usb_printing) {
  529. if (heating_status != 0) {
  530. lcd_print_stop();
  531. }
  532. else {
  533. fan_check_error = EFCE_DETECTED; //plans error for next processed command
  534. }
  535. }
  536. else {
  537. // SERIAL_PROTOCOLLNRPGM(MSG_OCTOPRINT_PAUSED); //Why pause octoprint? is_usb_printing would be true in that case, so there is no need for this.
  538. setTargetHotend0(0);
  539. heating_status = 0;
  540. fan_check_error = EFCE_REPORTED;
  541. }
  542. switch (_fan) {
  543. case 0: // extracting the same code from case 0 and case 1 into a function saves 72B
  544. fanSpeedErrorBeep(PSTR("Extruder fan speed is lower than expected"), MSG_FANCHECK_EXTRUDER);
  545. break;
  546. case 1:
  547. fanSpeedErrorBeep(PSTR("Print fan speed is lower than expected"), MSG_FANCHECK_PRINT);
  548. break;
  549. }
  550. }
  551. #endif //(defined(TACH_0) && TACH_0 >-1) || (defined(TACH_1) && TACH_1 > -1)
  552. void checkExtruderAutoFans()
  553. {
  554. #if defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1
  555. if (!(fanState & 0x02))
  556. {
  557. fanState &= ~1;
  558. fanState |= current_temperature[0] > EXTRUDER_AUTO_FAN_TEMPERATURE;
  559. }
  560. setExtruderAutoFanState(fanState);
  561. #endif
  562. }
  563. #endif // any extruder auto fan pins set
  564. // ready for eventually parameters adjusting
  565. void resetPID(uint8_t) // only for compiler-warning elimination (if function do nothing)
  566. //void resetPID(uint8_t extruder)
  567. {
  568. }
  569. void manage_heater()
  570. {
  571. #ifdef WATCHDOG
  572. wdt_reset();
  573. #endif //WATCHDOG
  574. float pid_input;
  575. float pid_output;
  576. if(temp_meas_ready != true) //better readability
  577. return;
  578. // more precisely - this condition partially stabilizes time interval for regulation values evaluation (@ ~ 230ms)
  579. // ADC values need to be converted before checking: converted values are later used in MINTEMP
  580. updateTemperaturesFromRawValues();
  581. check_max_temp();
  582. check_min_temp();
  583. #ifdef TEMP_RUNAWAY_BED_HYSTERESIS
  584. temp_runaway_check(0, target_temperature_bed, current_temperature_bed, (int)soft_pwm_bed, true);
  585. #endif
  586. for(int e = 0; e < EXTRUDERS; e++)
  587. {
  588. #ifdef TEMP_RUNAWAY_EXTRUDER_HYSTERESIS
  589. temp_runaway_check(e+1, target_temperature[e], current_temperature[e], (int)soft_pwm[e], false);
  590. #endif
  591. #ifdef PIDTEMP
  592. pid_input = current_temperature[e];
  593. #ifndef PID_OPENLOOP
  594. if(target_temperature[e] == 0) {
  595. pid_output = 0;
  596. pid_reset[e] = true;
  597. } else {
  598. pid_error[e] = target_temperature[e] - pid_input;
  599. if(pid_reset[e]) {
  600. iState_sum[e] = 0.0;
  601. dTerm[e] = 0.0; // 'dState_last[e]' initial setting is not necessary (see end of if-statement)
  602. pid_reset[e] = false;
  603. }
  604. #ifndef PonM
  605. pTerm[e] = cs.Kp * pid_error[e];
  606. iState_sum[e] += pid_error[e];
  607. iState_sum[e] = constrain(iState_sum[e], iState_sum_min[e], iState_sum_max[e]);
  608. iTerm[e] = cs.Ki * iState_sum[e];
  609. // PID_K1 defined in Configuration.h in the PID settings
  610. #define K2 (1.0-PID_K1)
  611. dTerm[e] = (cs.Kd * (pid_input - dState_last[e]))*K2 + (PID_K1 * dTerm[e]); // e.g. digital filtration of derivative term changes
  612. pid_output = pTerm[e] + iTerm[e] - dTerm[e]; // subtraction due to "Derivative on Measurement" method (i.e. derivative of input instead derivative of error is used)
  613. if (pid_output > PID_MAX) {
  614. if (pid_error[e] > 0 ) iState_sum[e] -= pid_error[e]; // conditional un-integration
  615. pid_output=PID_MAX;
  616. } else if (pid_output < 0) {
  617. if (pid_error[e] < 0 ) iState_sum[e] -= pid_error[e]; // conditional un-integration
  618. pid_output=0;
  619. }
  620. #else // PonM ("Proportional on Measurement" method)
  621. iState_sum[e] += cs.Ki * pid_error[e];
  622. iState_sum[e] -= cs.Kp * (pid_input - dState_last[e]);
  623. iState_sum[e] = constrain(iState_sum[e], 0, PID_INTEGRAL_DRIVE_MAX);
  624. dTerm[e] = cs.Kd * (pid_input - dState_last[e]);
  625. pid_output = iState_sum[e] - dTerm[e]; // subtraction due to "Derivative on Measurement" method (i.e. derivative of input instead derivative of error is used)
  626. pid_output = constrain(pid_output, 0, PID_MAX);
  627. #endif // PonM
  628. }
  629. dState_last[e] = pid_input;
  630. #else
  631. pid_output = constrain(target_temperature[e], 0, PID_MAX);
  632. #endif //PID_OPENLOOP
  633. #ifdef PID_DEBUG
  634. SERIAL_ECHO_START;
  635. SERIAL_ECHO(" PID_DEBUG ");
  636. SERIAL_ECHO(e);
  637. SERIAL_ECHO(": Input ");
  638. SERIAL_ECHO(pid_input);
  639. SERIAL_ECHO(" Output ");
  640. SERIAL_ECHO(pid_output);
  641. SERIAL_ECHO(" pTerm ");
  642. SERIAL_ECHO(pTerm[e]);
  643. SERIAL_ECHO(" iTerm ");
  644. SERIAL_ECHO(iTerm[e]);
  645. SERIAL_ECHO(" dTerm ");
  646. SERIAL_ECHOLN(-dTerm[e]);
  647. #endif //PID_DEBUG
  648. #else /* PID off */
  649. pid_output = 0;
  650. if(current_temperature[e] < target_temperature[e]) {
  651. pid_output = PID_MAX;
  652. }
  653. #endif
  654. // Check if temperature is within the correct range
  655. if((current_temperature[e] < maxttemp[e]) && (target_temperature[e] != 0))
  656. {
  657. soft_pwm[e] = (int)pid_output >> 1;
  658. }
  659. else
  660. {
  661. soft_pwm[e] = 0;
  662. }
  663. } // End extruder for loop
  664. #define FAN_CHECK_PERIOD 5000 //5s
  665. #define FAN_CHECK_DURATION 100 //100ms
  666. #ifndef DEBUG_DISABLE_FANCHECK
  667. #if (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1)
  668. #ifdef FAN_SOFT_PWM
  669. #ifdef FANCHECK
  670. if ((_millis() - extruder_autofan_last_check > FAN_CHECK_PERIOD) && (!fan_measuring)) {
  671. extruder_autofan_last_check = _millis();
  672. fanSpeedBckp = fanSpeedSoftPwm;
  673. if (fanSpeedSoftPwm >= MIN_PRINT_FAN_SPEED) { //if we are in rage where we are doing fan check, set full PWM range for a short time to measure fan RPM by reading tacho signal without modulation by PWM signal
  674. // printf_P(PSTR("fanSpeedSoftPwm 1: %d\n"), fanSpeedSoftPwm);
  675. fanSpeedSoftPwm = 255;
  676. }
  677. fan_measuring = true;
  678. }
  679. if ((_millis() - extruder_autofan_last_check > FAN_CHECK_DURATION) && (fan_measuring)) {
  680. countFanSpeed();
  681. checkFanSpeed();
  682. //printf_P(PSTR("fanSpeedSoftPwm 1: %d\n"), fanSpeedSoftPwm);
  683. fanSpeedSoftPwm = fanSpeedBckp;
  684. //printf_P(PSTR("fan PWM: %d; extr fanSpeed measured: %d; print fan speed measured: %d \n"), fanSpeedBckp, fan_speed[0], fan_speed[1]);
  685. extruder_autofan_last_check = _millis();
  686. fan_measuring = false;
  687. }
  688. #endif //FANCHECK
  689. checkExtruderAutoFans();
  690. #else //FAN_SOFT_PWM
  691. if(_millis() - extruder_autofan_last_check > 1000) // only need to check fan state very infrequently
  692. {
  693. #if (defined(FANCHECK) && ((defined(TACH_0) && (TACH_0 >-1)) || (defined(TACH_1) && (TACH_1 > -1))))
  694. countFanSpeed();
  695. checkFanSpeed();
  696. #endif //(defined(TACH_0) && TACH_0 >-1) || (defined(TACH_1) && TACH_1 > -1)
  697. checkExtruderAutoFans();
  698. extruder_autofan_last_check = _millis();
  699. }
  700. #endif //FAN_SOFT_PWM
  701. #endif
  702. #endif //DEBUG_DISABLE_FANCHECK
  703. #ifndef PIDTEMPBED
  704. if(_millis() - previous_millis_bed_heater < BED_CHECK_INTERVAL)
  705. return;
  706. previous_millis_bed_heater = _millis();
  707. #endif
  708. #if TEMP_SENSOR_BED != 0
  709. #ifdef PIDTEMPBED
  710. pid_input = current_temperature_bed;
  711. #ifndef PID_OPENLOOP
  712. pid_error_bed = target_temperature_bed - pid_input;
  713. pTerm_bed = cs.bedKp * pid_error_bed;
  714. temp_iState_bed += pid_error_bed;
  715. temp_iState_bed = constrain(temp_iState_bed, temp_iState_min_bed, temp_iState_max_bed);
  716. iTerm_bed = cs.bedKi * temp_iState_bed;
  717. //PID_K1 defined in Configuration.h in the PID settings
  718. #define K2 (1.0-PID_K1)
  719. dTerm_bed= (cs.bedKd * (pid_input - temp_dState_bed))*K2 + (PID_K1 * dTerm_bed);
  720. temp_dState_bed = pid_input;
  721. pid_output = pTerm_bed + iTerm_bed - dTerm_bed;
  722. if (pid_output > MAX_BED_POWER) {
  723. if (pid_error_bed > 0 ) temp_iState_bed -= pid_error_bed; // conditional un-integration
  724. pid_output=MAX_BED_POWER;
  725. } else if (pid_output < 0){
  726. if (pid_error_bed < 0 ) temp_iState_bed -= pid_error_bed; // conditional un-integration
  727. pid_output=0;
  728. }
  729. #else
  730. pid_output = constrain(target_temperature_bed, 0, MAX_BED_POWER);
  731. #endif //PID_OPENLOOP
  732. if(current_temperature_bed < BED_MAXTEMP)
  733. {
  734. soft_pwm_bed = (int)pid_output >> 1;
  735. timer02_set_pwm0(soft_pwm_bed << 1);
  736. }
  737. else {
  738. soft_pwm_bed = 0;
  739. timer02_set_pwm0(soft_pwm_bed << 1);
  740. }
  741. #elif !defined(BED_LIMIT_SWITCHING)
  742. // Check if temperature is within the correct range
  743. if(current_temperature_bed < BED_MAXTEMP)
  744. {
  745. if(current_temperature_bed >= target_temperature_bed)
  746. {
  747. soft_pwm_bed = 0;
  748. timer02_set_pwm0(soft_pwm_bed << 1);
  749. }
  750. else
  751. {
  752. soft_pwm_bed = MAX_BED_POWER>>1;
  753. timer02_set_pwm0(soft_pwm_bed << 1);
  754. }
  755. }
  756. else
  757. {
  758. soft_pwm_bed = 0;
  759. timer02_set_pwm0(soft_pwm_bed << 1);
  760. WRITE(HEATER_BED_PIN,LOW);
  761. }
  762. #else //#ifdef BED_LIMIT_SWITCHING
  763. // Check if temperature is within the correct band
  764. if(current_temperature_bed < BED_MAXTEMP)
  765. {
  766. if(current_temperature_bed > target_temperature_bed + BED_HYSTERESIS)
  767. {
  768. soft_pwm_bed = 0;
  769. timer02_set_pwm0(soft_pwm_bed << 1);
  770. }
  771. else if(current_temperature_bed <= target_temperature_bed - BED_HYSTERESIS)
  772. {
  773. soft_pwm_bed = MAX_BED_POWER>>1;
  774. timer02_set_pwm0(soft_pwm_bed << 1);
  775. }
  776. }
  777. else
  778. {
  779. soft_pwm_bed = 0;
  780. timer02_set_pwm0(soft_pwm_bed << 1);
  781. WRITE(HEATER_BED_PIN,LOW);
  782. }
  783. #endif
  784. if(target_temperature_bed==0)
  785. {
  786. soft_pwm_bed = 0;
  787. timer02_set_pwm0(soft_pwm_bed << 1);
  788. }
  789. #endif
  790. host_keepalive();
  791. }
  792. #define PGM_RD_W(x) (short)pgm_read_word(&x)
  793. // Derived from RepRap FiveD extruder::getTemperature()
  794. // For hot end temperature measurement.
  795. static float analog2temp(int raw, uint8_t e) {
  796. if(e >= EXTRUDERS)
  797. {
  798. SERIAL_ERROR_START;
  799. SERIAL_ERROR((int)e);
  800. SERIAL_ERRORLNPGM(" - Invalid extruder number !");
  801. kill(NULL, 6);
  802. return 0.0;
  803. }
  804. #ifdef HEATER_0_USES_MAX6675
  805. if (e == 0)
  806. {
  807. return 0.25 * raw;
  808. }
  809. #endif
  810. if(heater_ttbl_map[e] != NULL)
  811. {
  812. float celsius = 0;
  813. uint8_t i;
  814. short (*tt)[][2] = (short (*)[][2])(heater_ttbl_map[e]);
  815. for (i=1; i<heater_ttbllen_map[e]; i++)
  816. {
  817. if (PGM_RD_W((*tt)[i][0]) > raw)
  818. {
  819. celsius = PGM_RD_W((*tt)[i-1][1]) +
  820. (raw - PGM_RD_W((*tt)[i-1][0])) *
  821. (float)(PGM_RD_W((*tt)[i][1]) - PGM_RD_W((*tt)[i-1][1])) /
  822. (float)(PGM_RD_W((*tt)[i][0]) - PGM_RD_W((*tt)[i-1][0]));
  823. break;
  824. }
  825. }
  826. // Overflow: Set to last value in the table
  827. if (i == heater_ttbllen_map[e]) celsius = PGM_RD_W((*tt)[i-1][1]);
  828. return celsius;
  829. }
  830. #if defined(HEATER_0_USES_AD595)
  831. return ((raw * ((5.0 * 100.0) / 1024.0) / OVERSAMPLENR) * TEMP_SENSOR_AD595_GAIN) + TEMP_SENSOR_AD595_OFFSET;
  832. #elif defined (HEATER_0_USES_AD8495)
  833. return ((raw * 5.0 / 1024.0 / OVERSAMPLENR) / 0.005 * TEMP_SENSOR_AD8495_GAIN) + TEMP_SENSOR_AD8495_OFFSET; //for 5V 10bit ADC
  834. #endif
  835. }
  836. // Derived from RepRap FiveD extruder::getTemperature()
  837. // For bed temperature measurement.
  838. static float analog2tempBed(int raw) {
  839. #ifdef BED_USES_THERMISTOR
  840. float celsius = 0;
  841. byte i;
  842. for (i=1; i<BEDTEMPTABLE_LEN; i++)
  843. {
  844. if (PGM_RD_W(BEDTEMPTABLE[i][0]) > raw)
  845. {
  846. celsius = PGM_RD_W(BEDTEMPTABLE[i-1][1]) +
  847. (raw - PGM_RD_W(BEDTEMPTABLE[i-1][0])) *
  848. (float)(PGM_RD_W(BEDTEMPTABLE[i][1]) - PGM_RD_W(BEDTEMPTABLE[i-1][1])) /
  849. (float)(PGM_RD_W(BEDTEMPTABLE[i][0]) - PGM_RD_W(BEDTEMPTABLE[i-1][0]));
  850. break;
  851. }
  852. }
  853. // Overflow: Set to last value in the table
  854. if (i == BEDTEMPTABLE_LEN) celsius = PGM_RD_W(BEDTEMPTABLE[i-1][1]);
  855. // temperature offset adjustment
  856. #ifdef BED_OFFSET
  857. float _offset = BED_OFFSET;
  858. float _offset_center = BED_OFFSET_CENTER;
  859. float _offset_start = BED_OFFSET_START;
  860. float _first_koef = (_offset / 2) / (_offset_center - _offset_start);
  861. float _second_koef = (_offset / 2) / (100 - _offset_center);
  862. if (celsius >= _offset_start && celsius <= _offset_center)
  863. {
  864. celsius = celsius + (_first_koef * (celsius - _offset_start));
  865. }
  866. else if (celsius > _offset_center && celsius <= 100)
  867. {
  868. celsius = celsius + (_first_koef * (_offset_center - _offset_start)) + ( _second_koef * ( celsius - ( 100 - _offset_center ) )) ;
  869. }
  870. else if (celsius > 100)
  871. {
  872. celsius = celsius + _offset;
  873. }
  874. #endif
  875. return celsius;
  876. #elif defined BED_USES_AD595
  877. return ((raw * ((5.0 * 100.0) / 1024.0) / OVERSAMPLENR) * TEMP_SENSOR_AD595_GAIN) + TEMP_SENSOR_AD595_OFFSET;
  878. #else
  879. return 0;
  880. #endif
  881. }
  882. #ifdef AMBIENT_THERMISTOR
  883. static float analog2tempAmbient(int raw)
  884. {
  885. float celsius = 0;
  886. byte i;
  887. for (i=1; i<AMBIENTTEMPTABLE_LEN; i++)
  888. {
  889. if (PGM_RD_W(AMBIENTTEMPTABLE[i][0]) > raw)
  890. {
  891. celsius = PGM_RD_W(AMBIENTTEMPTABLE[i-1][1]) +
  892. (raw - PGM_RD_W(AMBIENTTEMPTABLE[i-1][0])) *
  893. (float)(PGM_RD_W(AMBIENTTEMPTABLE[i][1]) - PGM_RD_W(AMBIENTTEMPTABLE[i-1][1])) /
  894. (float)(PGM_RD_W(AMBIENTTEMPTABLE[i][0]) - PGM_RD_W(AMBIENTTEMPTABLE[i-1][0]));
  895. break;
  896. }
  897. }
  898. // Overflow: Set to last value in the table
  899. if (i == AMBIENTTEMPTABLE_LEN) celsius = PGM_RD_W(AMBIENTTEMPTABLE[i-1][1]);
  900. return celsius;
  901. }
  902. #endif //AMBIENT_THERMISTOR
  903. /* Called to get the raw values into the the actual temperatures. The raw values are created in interrupt context,
  904. and this function is called from normal context as it is too slow to run in interrupts and will block the stepper routine otherwise */
  905. static void updateTemperaturesFromRawValues()
  906. {
  907. for(uint8_t e=0;e<EXTRUDERS;e++)
  908. {
  909. current_temperature[e] = analog2temp(current_temperature_raw[e], e);
  910. }
  911. #ifdef PINDA_THERMISTOR
  912. current_temperature_raw_pinda = (uint16_t)((uint32_t)current_temperature_raw_pinda * 3 + current_temperature_raw_pinda_fast) >> 2;
  913. current_temperature_pinda = analog2tempBed(current_temperature_raw_pinda);
  914. #endif
  915. #ifdef AMBIENT_THERMISTOR
  916. current_temperature_ambient = analog2tempAmbient(current_temperature_raw_ambient); //thermistor for ambient is NTCG104LH104JT1 (2000)
  917. #endif
  918. #ifdef DEBUG_HEATER_BED_SIM
  919. current_temperature_bed = target_temperature_bed;
  920. #else //DEBUG_HEATER_BED_SIM
  921. current_temperature_bed = analog2tempBed(current_temperature_bed_raw);
  922. #endif //DEBUG_HEATER_BED_SIM
  923. CRITICAL_SECTION_START;
  924. temp_meas_ready = false;
  925. CRITICAL_SECTION_END;
  926. }
  927. void tp_init()
  928. {
  929. #if MB(RUMBA) && ((TEMP_SENSOR_0==-1)||(TEMP_SENSOR_1==-1)||(TEMP_SENSOR_2==-1)||(TEMP_SENSOR_BED==-1))
  930. //disable RUMBA JTAG in case the thermocouple extension is plugged on top of JTAG connector
  931. MCUCR=(1<<JTD);
  932. MCUCR=(1<<JTD);
  933. #endif
  934. // Finish init of mult extruder arrays
  935. for(int e = 0; e < EXTRUDERS; e++) {
  936. // populate with the first value
  937. maxttemp[e] = maxttemp[0];
  938. #ifdef PIDTEMP
  939. iState_sum_min[e] = 0.0;
  940. iState_sum_max[e] = PID_INTEGRAL_DRIVE_MAX / cs.Ki;
  941. #endif //PIDTEMP
  942. #ifdef PIDTEMPBED
  943. temp_iState_min_bed = 0.0;
  944. temp_iState_max_bed = PID_INTEGRAL_DRIVE_MAX / cs.bedKi;
  945. #endif //PIDTEMPBED
  946. }
  947. #if defined(HEATER_0_PIN) && (HEATER_0_PIN > -1)
  948. SET_OUTPUT(HEATER_0_PIN);
  949. #endif
  950. #if defined(HEATER_1_PIN) && (HEATER_1_PIN > -1)
  951. SET_OUTPUT(HEATER_1_PIN);
  952. #endif
  953. #if defined(HEATER_2_PIN) && (HEATER_2_PIN > -1)
  954. SET_OUTPUT(HEATER_2_PIN);
  955. #endif
  956. #if defined(HEATER_BED_PIN) && (HEATER_BED_PIN > -1)
  957. SET_OUTPUT(HEATER_BED_PIN);
  958. #endif
  959. #if defined(FAN_PIN) && (FAN_PIN > -1)
  960. SET_OUTPUT(FAN_PIN);
  961. #ifdef FAST_PWM_FAN
  962. setPwmFrequency(FAN_PIN, 1); // No prescaling. Pwm frequency = F_CPU/256/8
  963. #endif
  964. #ifdef FAN_SOFT_PWM
  965. soft_pwm_fan = fanSpeedSoftPwm / (1 << (8 - FAN_SOFT_PWM_BITS));
  966. #endif
  967. #endif
  968. #ifdef HEATER_0_USES_MAX6675
  969. #ifndef SDSUPPORT
  970. SET_OUTPUT(SCK_PIN);
  971. WRITE(SCK_PIN,0);
  972. SET_OUTPUT(MOSI_PIN);
  973. WRITE(MOSI_PIN,1);
  974. SET_INPUT(MISO_PIN);
  975. WRITE(MISO_PIN,1);
  976. #endif
  977. /* Using pinMode and digitalWrite, as that was the only way I could get it to compile */
  978. //Have to toggle SD card CS pin to low first, to enable firmware to talk with SD card
  979. pinMode(SS_PIN, OUTPUT);
  980. digitalWrite(SS_PIN,0);
  981. pinMode(MAX6675_SS, OUTPUT);
  982. digitalWrite(MAX6675_SS,1);
  983. #endif
  984. adc_init();
  985. timer0_init(); //enables the heatbed timer.
  986. // timer2 already enabled earlier in the code
  987. // now enable the COMPB temperature interrupt
  988. OCR2B = 128;
  989. TIMSK2 |= (1<<OCIE2B);
  990. timer4_init(); //for tone and Extruder fan PWM
  991. // Wait for temperature measurement to settle
  992. _delay(250);
  993. #ifdef HEATER_0_MINTEMP
  994. minttemp[0] = HEATER_0_MINTEMP;
  995. while(analog2temp(minttemp_raw[0], 0) < HEATER_0_MINTEMP) {
  996. #if HEATER_0_RAW_LO_TEMP < HEATER_0_RAW_HI_TEMP
  997. minttemp_raw[0] += OVERSAMPLENR;
  998. #else
  999. minttemp_raw[0] -= OVERSAMPLENR;
  1000. #endif
  1001. }
  1002. #endif //MINTEMP
  1003. #ifdef HEATER_0_MAXTEMP
  1004. maxttemp[0] = HEATER_0_MAXTEMP;
  1005. while(analog2temp(maxttemp_raw[0], 0) > HEATER_0_MAXTEMP) {
  1006. #if HEATER_0_RAW_LO_TEMP < HEATER_0_RAW_HI_TEMP
  1007. maxttemp_raw[0] -= OVERSAMPLENR;
  1008. #else
  1009. maxttemp_raw[0] += OVERSAMPLENR;
  1010. #endif
  1011. }
  1012. #endif //MAXTEMP
  1013. #if (EXTRUDERS > 1) && defined(HEATER_1_MINTEMP)
  1014. minttemp[1] = HEATER_1_MINTEMP;
  1015. while(analog2temp(minttemp_raw[1], 1) < HEATER_1_MINTEMP) {
  1016. #if HEATER_1_RAW_LO_TEMP < HEATER_1_RAW_HI_TEMP
  1017. minttemp_raw[1] += OVERSAMPLENR;
  1018. #else
  1019. minttemp_raw[1] -= OVERSAMPLENR;
  1020. #endif
  1021. }
  1022. #endif // MINTEMP 1
  1023. #if (EXTRUDERS > 1) && defined(HEATER_1_MAXTEMP)
  1024. maxttemp[1] = HEATER_1_MAXTEMP;
  1025. while(analog2temp(maxttemp_raw[1], 1) > HEATER_1_MAXTEMP) {
  1026. #if HEATER_1_RAW_LO_TEMP < HEATER_1_RAW_HI_TEMP
  1027. maxttemp_raw[1] -= OVERSAMPLENR;
  1028. #else
  1029. maxttemp_raw[1] += OVERSAMPLENR;
  1030. #endif
  1031. }
  1032. #endif //MAXTEMP 1
  1033. #if (EXTRUDERS > 2) && defined(HEATER_2_MINTEMP)
  1034. minttemp[2] = HEATER_2_MINTEMP;
  1035. while(analog2temp(minttemp_raw[2], 2) < HEATER_2_MINTEMP) {
  1036. #if HEATER_2_RAW_LO_TEMP < HEATER_2_RAW_HI_TEMP
  1037. minttemp_raw[2] += OVERSAMPLENR;
  1038. #else
  1039. minttemp_raw[2] -= OVERSAMPLENR;
  1040. #endif
  1041. }
  1042. #endif //MINTEMP 2
  1043. #if (EXTRUDERS > 2) && defined(HEATER_2_MAXTEMP)
  1044. maxttemp[2] = HEATER_2_MAXTEMP;
  1045. while(analog2temp(maxttemp_raw[2], 2) > HEATER_2_MAXTEMP) {
  1046. #if HEATER_2_RAW_LO_TEMP < HEATER_2_RAW_HI_TEMP
  1047. maxttemp_raw[2] -= OVERSAMPLENR;
  1048. #else
  1049. maxttemp_raw[2] += OVERSAMPLENR;
  1050. #endif
  1051. }
  1052. #endif //MAXTEMP 2
  1053. #ifdef BED_MINTEMP
  1054. while(analog2tempBed(bed_minttemp_raw) < BED_MINTEMP) {
  1055. #if HEATER_BED_RAW_LO_TEMP < HEATER_BED_RAW_HI_TEMP
  1056. bed_minttemp_raw += OVERSAMPLENR;
  1057. #else
  1058. bed_minttemp_raw -= OVERSAMPLENR;
  1059. #endif
  1060. }
  1061. #endif //BED_MINTEMP
  1062. #ifdef BED_MAXTEMP
  1063. while(analog2tempBed(bed_maxttemp_raw) > BED_MAXTEMP) {
  1064. #if HEATER_BED_RAW_LO_TEMP < HEATER_BED_RAW_HI_TEMP
  1065. bed_maxttemp_raw -= OVERSAMPLENR;
  1066. #else
  1067. bed_maxttemp_raw += OVERSAMPLENR;
  1068. #endif
  1069. }
  1070. #endif //BED_MAXTEMP
  1071. #ifdef AMBIENT_MINTEMP
  1072. while(analog2tempAmbient(ambient_minttemp_raw) < AMBIENT_MINTEMP) {
  1073. #if HEATER_AMBIENT_RAW_LO_TEMP < HEATER_AMBIENT_RAW_HI_TEMP
  1074. ambient_minttemp_raw += OVERSAMPLENR;
  1075. #else
  1076. ambient_minttemp_raw -= OVERSAMPLENR;
  1077. #endif
  1078. }
  1079. #endif //AMBIENT_MINTEMP
  1080. #ifdef AMBIENT_MAXTEMP
  1081. while(analog2tempAmbient(ambient_maxttemp_raw) > AMBIENT_MAXTEMP) {
  1082. #if HEATER_AMBIENT_RAW_LO_TEMP < HEATER_AMBIENT_RAW_HI_TEMP
  1083. ambient_maxttemp_raw -= OVERSAMPLENR;
  1084. #else
  1085. ambient_maxttemp_raw += OVERSAMPLENR;
  1086. #endif
  1087. }
  1088. #endif //AMBIENT_MAXTEMP
  1089. }
  1090. #if (defined (TEMP_RUNAWAY_BED_HYSTERESIS) && TEMP_RUNAWAY_BED_TIMEOUT > 0) || (defined (TEMP_RUNAWAY_EXTRUDER_HYSTERESIS) && TEMP_RUNAWAY_EXTRUDER_TIMEOUT > 0)
  1091. void temp_runaway_check(int _heater_id, float _target_temperature, float _current_temperature, float _output, bool _isbed)
  1092. {
  1093. float __delta;
  1094. float __hysteresis = 0;
  1095. int __timeout = 0;
  1096. bool temp_runaway_check_active = false;
  1097. static float __preheat_start[2] = { 0,0}; //currently just bed and one extruder
  1098. static int __preheat_counter[2] = { 0,0};
  1099. static int __preheat_errors[2] = { 0,0};
  1100. if (_millis() - temp_runaway_timer[_heater_id] > 2000)
  1101. {
  1102. #ifdef TEMP_RUNAWAY_BED_TIMEOUT
  1103. if (_isbed)
  1104. {
  1105. __hysteresis = TEMP_RUNAWAY_BED_HYSTERESIS;
  1106. __timeout = TEMP_RUNAWAY_BED_TIMEOUT;
  1107. }
  1108. #endif
  1109. #ifdef TEMP_RUNAWAY_EXTRUDER_TIMEOUT
  1110. if (!_isbed)
  1111. {
  1112. __hysteresis = TEMP_RUNAWAY_EXTRUDER_HYSTERESIS;
  1113. __timeout = TEMP_RUNAWAY_EXTRUDER_TIMEOUT;
  1114. }
  1115. #endif
  1116. temp_runaway_timer[_heater_id] = _millis();
  1117. if (_output == 0)
  1118. {
  1119. temp_runaway_check_active = false;
  1120. temp_runaway_error_counter[_heater_id] = 0;
  1121. }
  1122. if (temp_runaway_target[_heater_id] != _target_temperature)
  1123. {
  1124. if (_target_temperature > 0)
  1125. {
  1126. temp_runaway_status[_heater_id] = TempRunaway_PREHEAT;
  1127. temp_runaway_target[_heater_id] = _target_temperature;
  1128. __preheat_start[_heater_id] = _current_temperature;
  1129. __preheat_counter[_heater_id] = 0;
  1130. }
  1131. else
  1132. {
  1133. temp_runaway_status[_heater_id] = TempRunaway_INACTIVE;
  1134. temp_runaway_target[_heater_id] = _target_temperature;
  1135. }
  1136. }
  1137. if ((_current_temperature < _target_temperature) && (temp_runaway_status[_heater_id] == TempRunaway_PREHEAT))
  1138. {
  1139. __preheat_counter[_heater_id]++;
  1140. if (__preheat_counter[_heater_id] > ((_isbed) ? 16 : 8)) // periodicaly check if current temperature changes
  1141. {
  1142. /*SERIAL_ECHOPGM("Heater:");
  1143. MYSERIAL.print(_heater_id);
  1144. SERIAL_ECHOPGM(" T:");
  1145. MYSERIAL.print(_current_temperature);
  1146. SERIAL_ECHOPGM(" Tstart:");
  1147. MYSERIAL.print(__preheat_start[_heater_id]);
  1148. SERIAL_ECHOPGM(" delta:");
  1149. MYSERIAL.print(_current_temperature-__preheat_start[_heater_id]);*/
  1150. //-// if (_current_temperature - __preheat_start[_heater_id] < 2) {
  1151. //-// if (_current_temperature - __preheat_start[_heater_id] < ((_isbed && (_current_temperature>105.0))?0.6:2.0)) {
  1152. __delta=2.0;
  1153. if(_isbed)
  1154. {
  1155. __delta=3.0;
  1156. if(_current_temperature>90.0) __delta=2.0;
  1157. if(_current_temperature>105.0) __delta=0.6;
  1158. }
  1159. if (_current_temperature - __preheat_start[_heater_id] < __delta) {
  1160. __preheat_errors[_heater_id]++;
  1161. /*SERIAL_ECHOPGM(" Preheat errors:");
  1162. MYSERIAL.println(__preheat_errors[_heater_id]);*/
  1163. }
  1164. else {
  1165. //SERIAL_ECHOLNPGM("");
  1166. __preheat_errors[_heater_id] = 0;
  1167. }
  1168. if (__preheat_errors[_heater_id] > ((_isbed) ? 3 : 5))
  1169. {
  1170. if (farm_mode) { prusa_statistics(0); }
  1171. temp_runaway_stop(true, _isbed);
  1172. if (farm_mode) { prusa_statistics(91); }
  1173. }
  1174. __preheat_start[_heater_id] = _current_temperature;
  1175. __preheat_counter[_heater_id] = 0;
  1176. }
  1177. }
  1178. //-// if (_current_temperature >= _target_temperature && temp_runaway_status[_heater_id] == TempRunaway_PREHEAT)
  1179. if ((_current_temperature > (_target_temperature - __hysteresis)) && temp_runaway_status[_heater_id] == TempRunaway_PREHEAT)
  1180. {
  1181. /*SERIAL_ECHOPGM("Heater:");
  1182. MYSERIAL.print(_heater_id);
  1183. MYSERIAL.println(" ->tempRunaway");*/
  1184. temp_runaway_status[_heater_id] = TempRunaway_ACTIVE;
  1185. temp_runaway_check_active = false;
  1186. temp_runaway_error_counter[_heater_id] = 0;
  1187. }
  1188. if (_output > 0)
  1189. {
  1190. temp_runaway_check_active = true;
  1191. }
  1192. if (temp_runaway_check_active)
  1193. {
  1194. // we are in range
  1195. if ((_current_temperature > (_target_temperature - __hysteresis)) && (_current_temperature < (_target_temperature + __hysteresis)))
  1196. {
  1197. temp_runaway_check_active = false;
  1198. temp_runaway_error_counter[_heater_id] = 0;
  1199. }
  1200. else
  1201. {
  1202. if (temp_runaway_status[_heater_id] > TempRunaway_PREHEAT)
  1203. {
  1204. temp_runaway_error_counter[_heater_id]++;
  1205. if (temp_runaway_error_counter[_heater_id] * 2 > __timeout)
  1206. {
  1207. if (farm_mode) { prusa_statistics(0); }
  1208. temp_runaway_stop(false, _isbed);
  1209. if (farm_mode) { prusa_statistics(90); }
  1210. }
  1211. }
  1212. }
  1213. }
  1214. }
  1215. }
  1216. void temp_runaway_stop(bool isPreheat, bool isBed)
  1217. {
  1218. cancel_heatup = true;
  1219. quickStop();
  1220. if (card.sdprinting)
  1221. {
  1222. card.sdprinting = false;
  1223. card.closefile();
  1224. }
  1225. // Clean the input command queue
  1226. // This is necessary, because in command queue there can be commands which would later set heater or bed temperature.
  1227. cmdqueue_reset();
  1228. disable_heater();
  1229. disable_x();
  1230. disable_y();
  1231. disable_e0();
  1232. disable_e1();
  1233. disable_e2();
  1234. manage_heater();
  1235. lcd_update(0);
  1236. Sound_MakeCustom(200,0,true);
  1237. if (isPreheat)
  1238. {
  1239. Stop();
  1240. isBed ? LCD_ALERTMESSAGEPGM("BED PREHEAT ERROR") : LCD_ALERTMESSAGEPGM("PREHEAT ERROR");
  1241. SERIAL_ERROR_START;
  1242. isBed ? SERIAL_ERRORLNPGM(" THERMAL RUNAWAY ( PREHEAT HEATBED)") : SERIAL_ERRORLNPGM(" THERMAL RUNAWAY ( PREHEAT HOTEND)");
  1243. #ifdef EXTRUDER_ALTFAN_DETECT
  1244. altfanStatus.altfanOverride = 1; //full speed
  1245. #endif //EXTRUDER_ALTFAN_DETECT
  1246. setExtruderAutoFanState(3);
  1247. SET_OUTPUT(FAN_PIN);
  1248. #ifdef FAN_SOFT_PWM
  1249. fanSpeedSoftPwm = 255;
  1250. #else //FAN_SOFT_PWM
  1251. analogWrite(FAN_PIN, 255);
  1252. #endif //FAN_SOFT_PWM
  1253. fanSpeed = 255;
  1254. delayMicroseconds(2000);
  1255. }
  1256. else
  1257. {
  1258. isBed ? LCD_ALERTMESSAGEPGM("BED THERMAL RUNAWAY") : LCD_ALERTMESSAGEPGM("THERMAL RUNAWAY");
  1259. SERIAL_ERROR_START;
  1260. isBed ? SERIAL_ERRORLNPGM(" HEATBED THERMAL RUNAWAY") : SERIAL_ERRORLNPGM(" HOTEND THERMAL RUNAWAY");
  1261. }
  1262. }
  1263. #endif
  1264. void disable_heater()
  1265. {
  1266. setAllTargetHotends(0);
  1267. setTargetBed(0);
  1268. #if defined(TEMP_0_PIN) && TEMP_0_PIN > -1
  1269. target_temperature[0]=0;
  1270. soft_pwm[0]=0;
  1271. #if defined(HEATER_0_PIN) && HEATER_0_PIN > -1
  1272. WRITE(HEATER_0_PIN,LOW);
  1273. #endif
  1274. #endif
  1275. #if defined(TEMP_1_PIN) && TEMP_1_PIN > -1 && EXTRUDERS > 1
  1276. target_temperature[1]=0;
  1277. soft_pwm[1]=0;
  1278. #if defined(HEATER_1_PIN) && HEATER_1_PIN > -1
  1279. WRITE(HEATER_1_PIN,LOW);
  1280. #endif
  1281. #endif
  1282. #if defined(TEMP_2_PIN) && TEMP_2_PIN > -1 && EXTRUDERS > 2
  1283. target_temperature[2]=0;
  1284. soft_pwm[2]=0;
  1285. #if defined(HEATER_2_PIN) && HEATER_2_PIN > -1
  1286. WRITE(HEATER_2_PIN,LOW);
  1287. #endif
  1288. #endif
  1289. #if defined(TEMP_BED_PIN) && TEMP_BED_PIN > -1
  1290. target_temperature_bed=0;
  1291. soft_pwm_bed=0;
  1292. timer02_set_pwm0(soft_pwm_bed << 1);
  1293. bedPWMDisabled = 0;
  1294. #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
  1295. //WRITE(HEATER_BED_PIN,LOW);
  1296. #endif
  1297. #endif
  1298. }
  1299. //! codes of alert messages for the LCD - it is shorter to compare an uin8_t
  1300. //! than raw const char * of the messages themselves.
  1301. //! Could be used for MAXTEMP situations too - after reaching MAXTEMP and turning off the heater automagically
  1302. //! the heater/bed may cool down and a similar alert message like "MAXTERM fixed..." may be displayed.
  1303. enum { LCDALERT_NONE = 0, LCDALERT_HEATERMINTEMP, LCDALERT_BEDMINTEMP, LCDALERT_MINTEMPFIXED, LCDALERT_PLEASERESTART };
  1304. //! remember the last alert message sent to the LCD
  1305. //! to prevent flicker and improve speed
  1306. uint8_t last_alert_sent_to_lcd = LCDALERT_NONE;
  1307. //! update the current temperature error message
  1308. //! @param type short error abbreviation (PROGMEM)
  1309. //! @param func optional lcd update function (lcd_setalertstatus when first setting the error)
  1310. void temp_update_messagepgm(const char* PROGMEM type, void (*func)(const char*) = lcd_updatestatus)
  1311. {
  1312. char msg[LCD_WIDTH];
  1313. strcpy_P(msg, PSTR("Err: "));
  1314. strcat_P(msg, type);
  1315. (*func)(msg);
  1316. }
  1317. //! signal a temperature error on both the lcd and serial
  1318. //! @param type short error abbreviation (PROGMEM)
  1319. //! @param e optional extruder index for hotend errors
  1320. void temp_error_messagepgm(const char* PROGMEM type, uint8_t e = EXTRUDERS)
  1321. {
  1322. temp_update_messagepgm(type, lcd_setalertstatus);
  1323. SERIAL_ERROR_START;
  1324. if(e != EXTRUDERS) {
  1325. SERIAL_ERROR((int)e);
  1326. SERIAL_ERRORPGM(": ");
  1327. }
  1328. SERIAL_ERRORPGM("Heaters switched off. ");
  1329. SERIAL_ERRORRPGM(type);
  1330. SERIAL_ERRORLNPGM(" triggered!");
  1331. }
  1332. void max_temp_error(uint8_t e) {
  1333. disable_heater();
  1334. if(IsStopped() == false) {
  1335. temp_error_messagepgm(PSTR("MAXTEMP"), e);
  1336. }
  1337. #ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  1338. Stop();
  1339. #endif
  1340. SET_OUTPUT(FAN_PIN);
  1341. SET_OUTPUT(BEEPER);
  1342. WRITE(FAN_PIN, 1);
  1343. WRITE(BEEPER, 1);
  1344. #ifdef EXTRUDER_ALTFAN_DETECT
  1345. altfanStatus.altfanOverride = 1; //full speed
  1346. #endif //EXTRUDER_ALTFAN_DETECT
  1347. setExtruderAutoFanState(3);
  1348. // fanSpeed will consumed by the check_axes_activity() routine.
  1349. fanSpeed=255;
  1350. if (farm_mode) { prusa_statistics(93); }
  1351. }
  1352. void min_temp_error(uint8_t e) {
  1353. #ifdef DEBUG_DISABLE_MINTEMP
  1354. return;
  1355. #endif
  1356. disable_heater();
  1357. //if (current_temperature_ambient < MINTEMP_MINAMBIENT) return;
  1358. static const char err[] PROGMEM = "MINTEMP";
  1359. if(IsStopped() == false) {
  1360. temp_error_messagepgm(err, e);
  1361. last_alert_sent_to_lcd = LCDALERT_HEATERMINTEMP;
  1362. } else if( last_alert_sent_to_lcd != LCDALERT_HEATERMINTEMP ){ // only update, if the lcd message is to be changed (i.e. not the same as last time)
  1363. // we are already stopped due to some error, only update the status message without flickering
  1364. temp_update_messagepgm(err);
  1365. last_alert_sent_to_lcd = LCDALERT_HEATERMINTEMP;
  1366. }
  1367. #ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  1368. // if( last_alert_sent_to_lcd != LCDALERT_HEATERMINTEMP ){
  1369. // last_alert_sent_to_lcd = LCDALERT_HEATERMINTEMP;
  1370. // lcd_print_stop();
  1371. // }
  1372. Stop();
  1373. #endif
  1374. if (farm_mode) { prusa_statistics(92); }
  1375. }
  1376. void bed_max_temp_error(void) {
  1377. disable_heater();
  1378. if(IsStopped() == false) {
  1379. temp_error_messagepgm(PSTR("MAXTEMP BED"));
  1380. }
  1381. #ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  1382. Stop();
  1383. #endif
  1384. }
  1385. void bed_min_temp_error(void) {
  1386. #ifdef DEBUG_DISABLE_MINTEMP
  1387. return;
  1388. #endif
  1389. disable_heater();
  1390. static const char err[] PROGMEM = "MINTEMP BED";
  1391. if(IsStopped() == false) {
  1392. temp_error_messagepgm(err);
  1393. last_alert_sent_to_lcd = LCDALERT_BEDMINTEMP;
  1394. } else if( last_alert_sent_to_lcd != LCDALERT_BEDMINTEMP ){ // only update, if the lcd message is to be changed (i.e. not the same as last time)
  1395. // we are already stopped due to some error, only update the status message without flickering
  1396. temp_update_messagepgm(err);
  1397. last_alert_sent_to_lcd = LCDALERT_BEDMINTEMP;
  1398. }
  1399. #ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  1400. Stop();
  1401. #endif
  1402. }
  1403. #ifdef AMBIENT_THERMISTOR
  1404. void ambient_max_temp_error(void) {
  1405. disable_heater();
  1406. if(IsStopped() == false) {
  1407. temp_error_messagepgm(PSTR("MAXTEMP AMB"));
  1408. }
  1409. #ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  1410. Stop();
  1411. #endif
  1412. }
  1413. void ambient_min_temp_error(void) {
  1414. #ifdef DEBUG_DISABLE_MINTEMP
  1415. return;
  1416. #endif
  1417. disable_heater();
  1418. if(IsStopped() == false) {
  1419. temp_error_messagepgm(PSTR("MINTEMP AMB"));
  1420. }
  1421. #ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  1422. Stop();
  1423. #endif
  1424. }
  1425. #endif
  1426. #ifdef HEATER_0_USES_MAX6675
  1427. #define MAX6675_HEAT_INTERVAL 250
  1428. long max6675_previous_millis = MAX6675_HEAT_INTERVAL;
  1429. int max6675_temp = 2000;
  1430. int read_max6675()
  1431. {
  1432. if (_millis() - max6675_previous_millis < MAX6675_HEAT_INTERVAL)
  1433. return max6675_temp;
  1434. max6675_previous_millis = _millis();
  1435. max6675_temp = 0;
  1436. #ifdef PRR
  1437. PRR &= ~(1<<PRSPI);
  1438. #elif defined PRR0
  1439. PRR0 &= ~(1<<PRSPI);
  1440. #endif
  1441. SPCR = (1<<MSTR) | (1<<SPE) | (1<<SPR0);
  1442. // enable TT_MAX6675
  1443. WRITE(MAX6675_SS, 0);
  1444. // ensure 100ns delay - a bit extra is fine
  1445. asm("nop");//50ns on 20Mhz, 62.5ns on 16Mhz
  1446. asm("nop");//50ns on 20Mhz, 62.5ns on 16Mhz
  1447. // read MSB
  1448. SPDR = 0;
  1449. for (;(SPSR & (1<<SPIF)) == 0;);
  1450. max6675_temp = SPDR;
  1451. max6675_temp <<= 8;
  1452. // read LSB
  1453. SPDR = 0;
  1454. for (;(SPSR & (1<<SPIF)) == 0;);
  1455. max6675_temp |= SPDR;
  1456. // disable TT_MAX6675
  1457. WRITE(MAX6675_SS, 1);
  1458. if (max6675_temp & 4)
  1459. {
  1460. // thermocouple open
  1461. max6675_temp = 2000;
  1462. }
  1463. else
  1464. {
  1465. max6675_temp = max6675_temp >> 3;
  1466. }
  1467. return max6675_temp;
  1468. }
  1469. #endif
  1470. extern "C" {
  1471. void adc_ready(void) //callback from adc when sampling finished
  1472. {
  1473. current_temperature_raw[0] = adc_values[ADC_PIN_IDX(TEMP_0_PIN)]; //heater
  1474. #ifdef PINDA_THERMISTOR
  1475. current_temperature_raw_pinda_fast = adc_values[ADC_PIN_IDX(TEMP_PINDA_PIN)];
  1476. #endif //PINDA_THERMISTOR
  1477. current_temperature_bed_raw = adc_values[ADC_PIN_IDX(TEMP_BED_PIN)];
  1478. #ifdef VOLT_PWR_PIN
  1479. current_voltage_raw_pwr = adc_values[ADC_PIN_IDX(VOLT_PWR_PIN)];
  1480. #endif
  1481. #ifdef AMBIENT_THERMISTOR
  1482. current_temperature_raw_ambient = adc_values[ADC_PIN_IDX(TEMP_AMBIENT_PIN)]; // 5->6
  1483. #endif //AMBIENT_THERMISTOR
  1484. #ifdef VOLT_BED_PIN
  1485. current_voltage_raw_bed = adc_values[ADC_PIN_IDX(VOLT_BED_PIN)]; // 6->9
  1486. #endif
  1487. #ifdef IR_SENSOR_ANALOG
  1488. current_voltage_raw_IR = adc_values[ADC_PIN_IDX(VOLT_IR_PIN)];
  1489. #endif //IR_SENSOR_ANALOG
  1490. temp_meas_ready = true;
  1491. }
  1492. } // extern "C"
  1493. FORCE_INLINE static void temperature_isr()
  1494. {
  1495. if (!temp_meas_ready) adc_cycle();
  1496. lcd_buttons_update();
  1497. static uint8_t pwm_count = (1 << SOFT_PWM_SCALE);
  1498. static uint8_t soft_pwm_0;
  1499. #ifdef SLOW_PWM_HEATERS
  1500. static unsigned char slow_pwm_count = 0;
  1501. static unsigned char state_heater_0 = 0;
  1502. static unsigned char state_timer_heater_0 = 0;
  1503. #endif
  1504. #if (EXTRUDERS > 1) || defined(HEATERS_PARALLEL)
  1505. static unsigned char soft_pwm_1;
  1506. #ifdef SLOW_PWM_HEATERS
  1507. static unsigned char state_heater_1 = 0;
  1508. static unsigned char state_timer_heater_1 = 0;
  1509. #endif
  1510. #endif
  1511. #if EXTRUDERS > 2
  1512. static unsigned char soft_pwm_2;
  1513. #ifdef SLOW_PWM_HEATERS
  1514. static unsigned char state_heater_2 = 0;
  1515. static unsigned char state_timer_heater_2 = 0;
  1516. #endif
  1517. #endif
  1518. #if HEATER_BED_PIN > -1
  1519. // @@DR static unsigned char soft_pwm_b;
  1520. #ifdef SLOW_PWM_HEATERS
  1521. static unsigned char state_heater_b = 0;
  1522. static unsigned char state_timer_heater_b = 0;
  1523. #endif
  1524. #endif
  1525. #if defined(FILWIDTH_PIN) &&(FILWIDTH_PIN > -1)
  1526. static unsigned long raw_filwidth_value = 0; //added for filament width sensor
  1527. #endif
  1528. #ifndef SLOW_PWM_HEATERS
  1529. /*
  1530. * standard PWM modulation
  1531. */
  1532. if (pwm_count == 0)
  1533. {
  1534. soft_pwm_0 = soft_pwm[0];
  1535. if(soft_pwm_0 > 0)
  1536. {
  1537. WRITE(HEATER_0_PIN,1);
  1538. #ifdef HEATERS_PARALLEL
  1539. WRITE(HEATER_1_PIN,1);
  1540. #endif
  1541. } else WRITE(HEATER_0_PIN,0);
  1542. #if EXTRUDERS > 1
  1543. soft_pwm_1 = soft_pwm[1];
  1544. if(soft_pwm_1 > 0) WRITE(HEATER_1_PIN,1); else WRITE(HEATER_1_PIN,0);
  1545. #endif
  1546. #if EXTRUDERS > 2
  1547. soft_pwm_2 = soft_pwm[2];
  1548. if(soft_pwm_2 > 0) WRITE(HEATER_2_PIN,1); else WRITE(HEATER_2_PIN,0);
  1549. #endif
  1550. }
  1551. #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
  1552. #if 0 // @@DR vypnuto pro hw pwm bedu
  1553. // tuhle prasarnu bude potreba poustet ve stanovenych intervalech, jinak nemam moc sanci zareagovat
  1554. // teoreticky by se tato cast uz vubec nemusela poustet
  1555. if ((pwm_count & ((1 << HEATER_BED_SOFT_PWM_BITS) - 1)) == 0)
  1556. {
  1557. soft_pwm_b = soft_pwm_bed >> (7 - HEATER_BED_SOFT_PWM_BITS);
  1558. # ifndef SYSTEM_TIMER_2
  1559. // tady budu krokovat pomalou frekvenci na automatu - tohle je rizeni spinani a rozepinani
  1560. // jako ridici frekvenci mam 2khz, jako vystupni frekvenci mam 30hz
  1561. // 2kHz jsou ovsem ve slysitelnem pasmu, mozna bude potreba jit s frekvenci nahoru (a tomu taky prizpusobit ostatni veci)
  1562. // Teoreticky bych mohl stahnout OCR0B citac na 6, cimz bych se dostal nekam ke 40khz a tady potom honit PWM rychleji nebo i pomaleji
  1563. // to nicemu nevadi. Soft PWM scale by se 20x zvetsilo (no dobre, 16x), cimz by se to posunulo k puvodnimu 30Hz PWM
  1564. //if(soft_pwm_b > 0) WRITE(HEATER_BED_PIN,1); else WRITE(HEATER_BED_PIN,0);
  1565. # endif //SYSTEM_TIMER_2
  1566. }
  1567. #endif
  1568. #endif
  1569. #ifdef FAN_SOFT_PWM
  1570. if ((pwm_count & ((1 << FAN_SOFT_PWM_BITS) - 1)) == 0)
  1571. {
  1572. soft_pwm_fan = fanSpeedSoftPwm / (1 << (8 - FAN_SOFT_PWM_BITS));
  1573. if(soft_pwm_fan > 0) WRITE(FAN_PIN,1); else WRITE(FAN_PIN,0);
  1574. }
  1575. #endif
  1576. if(soft_pwm_0 < pwm_count)
  1577. {
  1578. WRITE(HEATER_0_PIN,0);
  1579. #ifdef HEATERS_PARALLEL
  1580. WRITE(HEATER_1_PIN,0);
  1581. #endif
  1582. }
  1583. #if EXTRUDERS > 1
  1584. if(soft_pwm_1 < pwm_count) WRITE(HEATER_1_PIN,0);
  1585. #endif
  1586. #if EXTRUDERS > 2
  1587. if(soft_pwm_2 < pwm_count) WRITE(HEATER_2_PIN,0);
  1588. #endif
  1589. #if 0 // @@DR
  1590. #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
  1591. if (soft_pwm_b < (pwm_count & ((1 << HEATER_BED_SOFT_PWM_BITS) - 1))){
  1592. //WRITE(HEATER_BED_PIN,0);
  1593. }
  1594. //WRITE(HEATER_BED_PIN, pwm_count & 1 );
  1595. #endif
  1596. #endif
  1597. #ifdef FAN_SOFT_PWM
  1598. if (soft_pwm_fan < (pwm_count & ((1 << FAN_SOFT_PWM_BITS) - 1))) WRITE(FAN_PIN,0);
  1599. #endif
  1600. pwm_count += (1 << SOFT_PWM_SCALE);
  1601. pwm_count &= 0x7f;
  1602. #else //ifndef SLOW_PWM_HEATERS
  1603. /*
  1604. * SLOW PWM HEATERS
  1605. *
  1606. * for heaters drived by relay
  1607. */
  1608. #ifndef MIN_STATE_TIME
  1609. #define MIN_STATE_TIME 16 // MIN_STATE_TIME * 65.5 = time in milliseconds
  1610. #endif
  1611. if (slow_pwm_count == 0) {
  1612. // EXTRUDER 0
  1613. soft_pwm_0 = soft_pwm[0];
  1614. if (soft_pwm_0 > 0) {
  1615. // turn ON heather only if the minimum time is up
  1616. if (state_timer_heater_0 == 0) {
  1617. // if change state set timer
  1618. if (state_heater_0 == 0) {
  1619. state_timer_heater_0 = MIN_STATE_TIME;
  1620. }
  1621. state_heater_0 = 1;
  1622. WRITE(HEATER_0_PIN, 1);
  1623. #ifdef HEATERS_PARALLEL
  1624. WRITE(HEATER_1_PIN, 1);
  1625. #endif
  1626. }
  1627. } else {
  1628. // turn OFF heather only if the minimum time is up
  1629. if (state_timer_heater_0 == 0) {
  1630. // if change state set timer
  1631. if (state_heater_0 == 1) {
  1632. state_timer_heater_0 = MIN_STATE_TIME;
  1633. }
  1634. state_heater_0 = 0;
  1635. WRITE(HEATER_0_PIN, 0);
  1636. #ifdef HEATERS_PARALLEL
  1637. WRITE(HEATER_1_PIN, 0);
  1638. #endif
  1639. }
  1640. }
  1641. #if EXTRUDERS > 1
  1642. // EXTRUDER 1
  1643. soft_pwm_1 = soft_pwm[1];
  1644. if (soft_pwm_1 > 0) {
  1645. // turn ON heather only if the minimum time is up
  1646. if (state_timer_heater_1 == 0) {
  1647. // if change state set timer
  1648. if (state_heater_1 == 0) {
  1649. state_timer_heater_1 = MIN_STATE_TIME;
  1650. }
  1651. state_heater_1 = 1;
  1652. WRITE(HEATER_1_PIN, 1);
  1653. }
  1654. } else {
  1655. // turn OFF heather only if the minimum time is up
  1656. if (state_timer_heater_1 == 0) {
  1657. // if change state set timer
  1658. if (state_heater_1 == 1) {
  1659. state_timer_heater_1 = MIN_STATE_TIME;
  1660. }
  1661. state_heater_1 = 0;
  1662. WRITE(HEATER_1_PIN, 0);
  1663. }
  1664. }
  1665. #endif
  1666. #if EXTRUDERS > 2
  1667. // EXTRUDER 2
  1668. soft_pwm_2 = soft_pwm[2];
  1669. if (soft_pwm_2 > 0) {
  1670. // turn ON heather only if the minimum time is up
  1671. if (state_timer_heater_2 == 0) {
  1672. // if change state set timer
  1673. if (state_heater_2 == 0) {
  1674. state_timer_heater_2 = MIN_STATE_TIME;
  1675. }
  1676. state_heater_2 = 1;
  1677. WRITE(HEATER_2_PIN, 1);
  1678. }
  1679. } else {
  1680. // turn OFF heather only if the minimum time is up
  1681. if (state_timer_heater_2 == 0) {
  1682. // if change state set timer
  1683. if (state_heater_2 == 1) {
  1684. state_timer_heater_2 = MIN_STATE_TIME;
  1685. }
  1686. state_heater_2 = 0;
  1687. WRITE(HEATER_2_PIN, 0);
  1688. }
  1689. }
  1690. #endif
  1691. #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
  1692. // BED
  1693. soft_pwm_b = soft_pwm_bed;
  1694. if (soft_pwm_b > 0) {
  1695. // turn ON heather only if the minimum time is up
  1696. if (state_timer_heater_b == 0) {
  1697. // if change state set timer
  1698. if (state_heater_b == 0) {
  1699. state_timer_heater_b = MIN_STATE_TIME;
  1700. }
  1701. state_heater_b = 1;
  1702. //WRITE(HEATER_BED_PIN, 1);
  1703. }
  1704. } else {
  1705. // turn OFF heather only if the minimum time is up
  1706. if (state_timer_heater_b == 0) {
  1707. // if change state set timer
  1708. if (state_heater_b == 1) {
  1709. state_timer_heater_b = MIN_STATE_TIME;
  1710. }
  1711. state_heater_b = 0;
  1712. WRITE(HEATER_BED_PIN, 0);
  1713. }
  1714. }
  1715. #endif
  1716. } // if (slow_pwm_count == 0)
  1717. // EXTRUDER 0
  1718. if (soft_pwm_0 < slow_pwm_count) {
  1719. // turn OFF heather only if the minimum time is up
  1720. if (state_timer_heater_0 == 0) {
  1721. // if change state set timer
  1722. if (state_heater_0 == 1) {
  1723. state_timer_heater_0 = MIN_STATE_TIME;
  1724. }
  1725. state_heater_0 = 0;
  1726. WRITE(HEATER_0_PIN, 0);
  1727. #ifdef HEATERS_PARALLEL
  1728. WRITE(HEATER_1_PIN, 0);
  1729. #endif
  1730. }
  1731. }
  1732. #if EXTRUDERS > 1
  1733. // EXTRUDER 1
  1734. if (soft_pwm_1 < slow_pwm_count) {
  1735. // turn OFF heather only if the minimum time is up
  1736. if (state_timer_heater_1 == 0) {
  1737. // if change state set timer
  1738. if (state_heater_1 == 1) {
  1739. state_timer_heater_1 = MIN_STATE_TIME;
  1740. }
  1741. state_heater_1 = 0;
  1742. WRITE(HEATER_1_PIN, 0);
  1743. }
  1744. }
  1745. #endif
  1746. #if EXTRUDERS > 2
  1747. // EXTRUDER 2
  1748. if (soft_pwm_2 < slow_pwm_count) {
  1749. // turn OFF heather only if the minimum time is up
  1750. if (state_timer_heater_2 == 0) {
  1751. // if change state set timer
  1752. if (state_heater_2 == 1) {
  1753. state_timer_heater_2 = MIN_STATE_TIME;
  1754. }
  1755. state_heater_2 = 0;
  1756. WRITE(HEATER_2_PIN, 0);
  1757. }
  1758. }
  1759. #endif
  1760. #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
  1761. // BED
  1762. if (soft_pwm_b < slow_pwm_count) {
  1763. // turn OFF heather only if the minimum time is up
  1764. if (state_timer_heater_b == 0) {
  1765. // if change state set timer
  1766. if (state_heater_b == 1) {
  1767. state_timer_heater_b = MIN_STATE_TIME;
  1768. }
  1769. state_heater_b = 0;
  1770. WRITE(HEATER_BED_PIN, 0);
  1771. }
  1772. }
  1773. #endif
  1774. #ifdef FAN_SOFT_PWM
  1775. if ((pwm_count & ((1 << FAN_SOFT_PWM_BITS) - 1)) == 0)
  1776. soft_pwm_fan = fanSpeedSoftPwm / (1 << (8 - FAN_SOFT_PWM_BITS));
  1777. if (soft_pwm_fan > 0) WRITE(FAN_PIN,1); else WRITE(FAN_PIN,0);
  1778. }
  1779. if (soft_pwm_fan < pwm_count) WRITE(FAN_PIN,0);
  1780. #endif
  1781. pwm_count += (1 << SOFT_PWM_SCALE);
  1782. pwm_count &= 0x7f;
  1783. // increment slow_pwm_count only every 64 pwm_count circa 65.5ms
  1784. if ((pwm_count % 64) == 0) {
  1785. slow_pwm_count++;
  1786. slow_pwm_count &= 0x7f;
  1787. // Extruder 0
  1788. if (state_timer_heater_0 > 0) {
  1789. state_timer_heater_0--;
  1790. }
  1791. #if EXTRUDERS > 1
  1792. // Extruder 1
  1793. if (state_timer_heater_1 > 0)
  1794. state_timer_heater_1--;
  1795. #endif
  1796. #if EXTRUDERS > 2
  1797. // Extruder 2
  1798. if (state_timer_heater_2 > 0)
  1799. state_timer_heater_2--;
  1800. #endif
  1801. #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
  1802. // Bed
  1803. if (state_timer_heater_b > 0)
  1804. state_timer_heater_b--;
  1805. #endif
  1806. } //if ((pwm_count % 64) == 0) {
  1807. #endif //ifndef SLOW_PWM_HEATERS
  1808. #ifdef BABYSTEPPING
  1809. for(uint8_t axis=0;axis<3;axis++)
  1810. {
  1811. int curTodo=babystepsTodo[axis]; //get rid of volatile for performance
  1812. if(curTodo>0)
  1813. {
  1814. CRITICAL_SECTION_START;
  1815. babystep(axis,/*fwd*/true);
  1816. babystepsTodo[axis]--; //less to do next time
  1817. CRITICAL_SECTION_END;
  1818. }
  1819. else
  1820. if(curTodo<0)
  1821. {
  1822. CRITICAL_SECTION_START;
  1823. babystep(axis,/*fwd*/false);
  1824. babystepsTodo[axis]++; //less to do next time
  1825. CRITICAL_SECTION_END;
  1826. }
  1827. }
  1828. #endif //BABYSTEPPING
  1829. #if (defined(FANCHECK) && defined(TACH_0) && (TACH_0 > -1))
  1830. check_fans();
  1831. #endif //(defined(TACH_0))
  1832. }
  1833. // Timer2 (originaly timer0) is shared with millies
  1834. #ifdef SYSTEM_TIMER_2
  1835. ISR(TIMER2_COMPB_vect)
  1836. #else //SYSTEM_TIMER_2
  1837. ISR(TIMER0_COMPB_vect)
  1838. #endif //SYSTEM_TIMER_2
  1839. {
  1840. static bool _lock = false;
  1841. if (!_lock)
  1842. {
  1843. _lock = true;
  1844. sei();
  1845. temperature_isr();
  1846. cli();
  1847. _lock = false;
  1848. }
  1849. }
  1850. void check_max_temp()
  1851. {
  1852. //heater
  1853. #if HEATER_0_RAW_LO_TEMP > HEATER_0_RAW_HI_TEMP
  1854. if (current_temperature_raw[0] <= maxttemp_raw[0]) {
  1855. #else
  1856. if (current_temperature_raw[0] >= maxttemp_raw[0]) {
  1857. #endif
  1858. max_temp_error(0);
  1859. }
  1860. //bed
  1861. #if defined(BED_MAXTEMP) && (TEMP_SENSOR_BED != 0)
  1862. #if HEATER_BED_RAW_LO_TEMP > HEATER_BED_RAW_HI_TEMP
  1863. if (current_temperature_bed_raw <= bed_maxttemp_raw) {
  1864. #else
  1865. if (current_temperature_bed_raw >= bed_maxttemp_raw) {
  1866. #endif
  1867. bed_max_temp_error();
  1868. }
  1869. #endif
  1870. //ambient
  1871. #if defined(AMBIENT_MAXTEMP) && (TEMP_SENSOR_AMBIENT != 0)
  1872. #if AMBIENT_RAW_LO_TEMP > AMBIENT_RAW_HI_TEMP
  1873. if (current_temperature_raw_ambient <= ambient_maxttemp_raw) {
  1874. #else
  1875. if (current_temperature_raw_ambient >= ambient_maxttemp_raw) {
  1876. #endif
  1877. ambient_max_temp_error();
  1878. }
  1879. #endif
  1880. }
  1881. //! number of repeating the same state with consecutive step() calls
  1882. //! used to slow down text switching
  1883. struct alert_automaton_mintemp {
  1884. const char *m2;
  1885. alert_automaton_mintemp(const char *m2):m2(m2){}
  1886. private:
  1887. enum { ALERT_AUTOMATON_SPEED_DIV = 5 };
  1888. enum class States : uint8_t { Init = 0, TempAboveMintemp, ShowPleaseRestart, ShowMintemp };
  1889. States state = States::Init;
  1890. uint8_t repeat = ALERT_AUTOMATON_SPEED_DIV;
  1891. void substep(States next_state){
  1892. if( repeat == 0 ){
  1893. state = next_state; // advance to the next state
  1894. repeat = ALERT_AUTOMATON_SPEED_DIV; // and prepare repeating for it too
  1895. } else {
  1896. --repeat;
  1897. }
  1898. }
  1899. public:
  1900. //! brief state automaton step routine
  1901. //! @param current_temp current hotend/bed temperature (for computing simple hysteresis)
  1902. //! @param mintemp minimal temperature including hysteresis to check current_temp against
  1903. void step(float current_temp, float mintemp){
  1904. static const char m1[] PROGMEM = "Please restart";
  1905. switch(state){
  1906. case States::Init: // initial state - check hysteresis
  1907. if( current_temp > mintemp ){
  1908. state = States::TempAboveMintemp;
  1909. }
  1910. // otherwise keep the Err MINTEMP alert message on the display,
  1911. // i.e. do not transfer to state 1
  1912. break;
  1913. case States::TempAboveMintemp: // the temperature has risen above the hysteresis check
  1914. lcd_setalertstatuspgm(m2);
  1915. substep(States::ShowMintemp);
  1916. last_alert_sent_to_lcd = LCDALERT_MINTEMPFIXED;
  1917. break;
  1918. case States::ShowPleaseRestart: // displaying "Please restart"
  1919. lcd_updatestatuspgm(m1);
  1920. substep(States::ShowMintemp);
  1921. last_alert_sent_to_lcd = LCDALERT_PLEASERESTART;
  1922. break;
  1923. case States::ShowMintemp: // displaying "MINTEMP fixed"
  1924. lcd_updatestatuspgm(m2);
  1925. substep(States::ShowPleaseRestart);
  1926. last_alert_sent_to_lcd = LCDALERT_MINTEMPFIXED;
  1927. break;
  1928. }
  1929. }
  1930. };
  1931. static const char m2hotend[] PROGMEM = "MINTEMP HOTEND fixed";
  1932. static const char m2bed[] PROGMEM = "MINTEMP BED fixed";
  1933. static alert_automaton_mintemp alert_automaton_hotend(m2hotend), alert_automaton_bed(m2bed);
  1934. void check_min_temp_heater0()
  1935. {
  1936. //heater
  1937. #if HEATER_0_RAW_LO_TEMP > HEATER_0_RAW_HI_TEMP
  1938. if (current_temperature_raw[0] >= minttemp_raw[0]) {
  1939. #else
  1940. if (current_temperature_raw[0] <= minttemp_raw[0]) {
  1941. #endif
  1942. menu_set_serious_error(SERIOUS_ERR_MINTEMP_HEATER);
  1943. min_temp_error(0);
  1944. } else if( menu_is_serious_error(SERIOUS_ERR_MINTEMP_HEATER) ) {
  1945. // no recovery, just force the user to restart the printer
  1946. // which is a safer variant than just continuing printing
  1947. // The automaton also checks for hysteresis - the temperature must have reached a few degrees above the MINTEMP, before
  1948. // we shall signalize, that MINTEMP has been fixed
  1949. // Code notice: normally the alert_automaton instance would have been placed here
  1950. // as static alert_automaton_mintemp alert_automaton_hotend, but
  1951. // due to stupid compiler that takes 16 more bytes.
  1952. alert_automaton_hotend.step(current_temperature[0], minttemp[0] + TEMP_HYSTERESIS);
  1953. }
  1954. }
  1955. void check_min_temp_bed()
  1956. {
  1957. #if HEATER_BED_RAW_LO_TEMP > HEATER_BED_RAW_HI_TEMP
  1958. if (current_temperature_bed_raw >= bed_minttemp_raw) {
  1959. #else
  1960. if (current_temperature_bed_raw <= bed_minttemp_raw) {
  1961. #endif
  1962. menu_set_serious_error(SERIOUS_ERR_MINTEMP_BED);
  1963. bed_min_temp_error();
  1964. } else if( menu_is_serious_error(SERIOUS_ERR_MINTEMP_BED) ){
  1965. // no recovery, just force the user to restart the printer
  1966. // which is a safer variant than just continuing printing
  1967. alert_automaton_bed.step(current_temperature_bed, BED_MINTEMP + TEMP_HYSTERESIS);
  1968. }
  1969. }
  1970. #ifdef AMBIENT_MINTEMP
  1971. void check_min_temp_ambient()
  1972. {
  1973. #if AMBIENT_RAW_LO_TEMP > AMBIENT_RAW_HI_TEMP
  1974. if (current_temperature_raw_ambient >= ambient_minttemp_raw) {
  1975. #else
  1976. if (current_temperature_raw_ambient <= ambient_minttemp_raw) {
  1977. #endif
  1978. ambient_min_temp_error();
  1979. }
  1980. }
  1981. #endif
  1982. void check_min_temp()
  1983. {
  1984. static bool bCheckingOnHeater=false; // state variable, which allows to short no-checking delay (is set, when temperature is (first time) over heaterMintemp)
  1985. static bool bCheckingOnBed=false; // state variable, which allows to short no-checking delay (is set, when temperature is (first time) over bedMintemp)
  1986. #ifdef AMBIENT_THERMISTOR
  1987. #ifdef AMBIENT_MINTEMP
  1988. check_min_temp_ambient();
  1989. #endif
  1990. #if AMBIENT_RAW_LO_TEMP > AMBIENT_RAW_HI_TEMP
  1991. if(current_temperature_raw_ambient>(OVERSAMPLENR*MINTEMP_MINAMBIENT_RAW)) // thermistor is NTC type
  1992. #else
  1993. if(current_temperature_raw_ambient=<(OVERSAMPLENR*MINTEMP_MINAMBIENT_RAW))
  1994. #endif
  1995. { // ambient temperature is low
  1996. #endif //AMBIENT_THERMISTOR
  1997. // *** 'common' part of code for MK2.5 & MK3
  1998. // * nozzle checking
  1999. if(target_temperature[active_extruder]>minttemp[active_extruder])
  2000. { // ~ nozzle heating is on
  2001. bCheckingOnHeater=bCheckingOnHeater||(current_temperature[active_extruder]>(minttemp[active_extruder]+TEMP_HYSTERESIS)); // for eventually delay cutting
  2002. if(oTimer4minTempHeater.expired(HEATER_MINTEMP_DELAY)||(!oTimer4minTempHeater.running())||bCheckingOnHeater)
  2003. {
  2004. bCheckingOnHeater=true; // not necessary
  2005. check_min_temp_heater0(); // delay is elapsed or temperature is/was over minTemp => periodical checking is active
  2006. }
  2007. }
  2008. else { // ~ nozzle heating is off
  2009. oTimer4minTempHeater.start();
  2010. bCheckingOnHeater=false;
  2011. }
  2012. // * bed checking
  2013. if(target_temperature_bed>BED_MINTEMP)
  2014. { // ~ bed heating is on
  2015. bCheckingOnBed=bCheckingOnBed||(current_temperature_bed>(BED_MINTEMP+TEMP_HYSTERESIS)); // for eventually delay cutting
  2016. if(oTimer4minTempBed.expired(BED_MINTEMP_DELAY)||(!oTimer4minTempBed.running())||bCheckingOnBed)
  2017. {
  2018. bCheckingOnBed=true; // not necessary
  2019. check_min_temp_bed(); // delay is elapsed or temperature is/was over minTemp => periodical checking is active
  2020. }
  2021. }
  2022. else { // ~ bed heating is off
  2023. oTimer4minTempBed.start();
  2024. bCheckingOnBed=false;
  2025. }
  2026. // *** end of 'common' part
  2027. #ifdef AMBIENT_THERMISTOR
  2028. }
  2029. else { // ambient temperature is standard
  2030. check_min_temp_heater0();
  2031. check_min_temp_bed();
  2032. }
  2033. #endif //AMBIENT_THERMISTOR
  2034. }
  2035. #if (defined(FANCHECK) && defined(TACH_0) && (TACH_0 > -1))
  2036. void check_fans() {
  2037. #ifdef FAN_SOFT_PWM
  2038. if (READ(TACH_0) != fan_state[0]) {
  2039. if(fan_measuring) fan_edge_counter[0] ++;
  2040. fan_state[0] = !fan_state[0];
  2041. }
  2042. #else //FAN_SOFT_PWM
  2043. if (READ(TACH_0) != fan_state[0]) {
  2044. fan_edge_counter[0] ++;
  2045. fan_state[0] = !fan_state[0];
  2046. }
  2047. #endif
  2048. //if (READ(TACH_1) != fan_state[1]) {
  2049. // fan_edge_counter[1] ++;
  2050. // fan_state[1] = !fan_state[1];
  2051. //}
  2052. }
  2053. #endif //TACH_0
  2054. #ifdef PIDTEMP
  2055. // Apply the scale factors to the PID values
  2056. float scalePID_i(float i)
  2057. {
  2058. return i*PID_dT;
  2059. }
  2060. float unscalePID_i(float i)
  2061. {
  2062. return i/PID_dT;
  2063. }
  2064. float scalePID_d(float d)
  2065. {
  2066. return d/PID_dT;
  2067. }
  2068. float unscalePID_d(float d)
  2069. {
  2070. return d*PID_dT;
  2071. }
  2072. #endif //PIDTEMP
  2073. #ifdef PINDA_THERMISTOR
  2074. //! @brief PINDA thermistor detected
  2075. //!
  2076. //! @retval true firmware should do temperature compensation and allow calibration
  2077. //! @retval false PINDA thermistor is not detected, disable temperature compensation and calibration
  2078. //! @retval true/false when forced via LCD menu Settings->HW Setup->SuperPINDA
  2079. //!
  2080. bool has_temperature_compensation()
  2081. {
  2082. #ifdef SUPERPINDA_SUPPORT
  2083. #ifdef PINDA_TEMP_COMP
  2084. uint8_t pinda_temp_compensation = eeprom_read_byte((uint8_t*)EEPROM_PINDA_TEMP_COMPENSATION);
  2085. if (pinda_temp_compensation == EEPROM_EMPTY_VALUE) //Unkown PINDA temp compenstation, so check it.
  2086. {
  2087. #endif //PINDA_TEMP_COMP
  2088. return (current_temperature_pinda >= PINDA_MINTEMP) ? true : false;
  2089. #ifdef PINDA_TEMP_COMP
  2090. }
  2091. else if (pinda_temp_compensation == 0) return true; //Overwritten via LCD menu SuperPINDA [No]
  2092. else return false; //Overwritten via LCD menu SuperPINDA [YES]
  2093. #endif //PINDA_TEMP_COMP
  2094. #else
  2095. return true;
  2096. #endif
  2097. }
  2098. #endif //PINDA_THERMISTOR