diff --git a/Marlin/applet/Marlin.cpp b/Marlin/applet/Marlin.cpp deleted file mode 100644 index 70800d8810..0000000000 --- a/Marlin/applet/Marlin.cpp +++ /dev/null @@ -1,2050 +0,0 @@ -#include "WProgram.h" -/* - Reprap firmware based on Sprinter and grbl. - Copyright (C) 2011 - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . - */ - -/* - This firmware is a mashup of Sprinter and grbl. - (https://github.com/kliment/Sprinter) - (https://github.com/simen/grbl/tree) - The acceleration algorithm is derived from http://hwml.com/LeibRamp.pdf - This firmware is optimized for gen6 electronics. - */ - - -#include "fastio.h" -#include "Configuration.h" -#include "pins.h" -#include "Marlin.h" -#include "speed_lookuptable.h" - -#ifdef SDSUPPORT -#include "SdFat.h" -#endif - -#ifndef CRITICAL_SECTION_START -#define CRITICAL_SECTION_START unsigned char _sreg = SREG; cli() -#define CRITICAL_SECTION_END SREG = _sreg -#endif - -// look here for descriptions of gcodes: http://linuxcnc.org/handbook/gcode/g-code.html -// http://objects.reprap.org/wiki/Mendel_User_Manual:_RepRapGCodes - -//Implemented Codes -//------------------- -// G0 -> G1 -// G1 - Coordinated Movement X Y Z E -// G4 - Dwell S or P -// G28 - Home all Axis -// G90 - Use Absolute Coordinates -// G91 - Use Relative Coordinates -// G92 - Set current position to cordinates given - -//RepRap M Codes -// M104 - Set extruder target temp -// M105 - Read current temp -// M106 - Fan on -// M107 - Fan off -// M109 - Wait for extruder current temp to reach target temp. -// M114 - Display current position - -//Custom M Codes -// M80 - Turn on Power Supply -// M20 - List SD card -// M21 - Init SD card -// M22 - Release SD card -// M23 - Select SD file (M23 filename.g) -// M24 - Start/resume SD print -// M25 - Pause SD print -// M26 - Set SD position in bytes (M26 S12345) -// M27 - Report SD print status -// M28 - Start SD write (M28 filename.g) -// M29 - Stop SD write -// M81 - Turn off Power Supply -// M82 - Set E codes absolute (default) -// M83 - Set E codes relative while in Absolute Coordinates (G90) mode -// M84 - Disable steppers until next move, -// or use S to specify an inactivity timeout, after which the steppers will be disabled. S0 to disable the timeout. -// M85 - Set inactivity shutdown timer with parameter S. To disable set zero (default) -// M92 - Set axis_steps_per_unit - same syntax as G92 -// M115 - Capabilities string -// M140 - Set bed target temp -// M190 - Wait for bed current temp to reach target temp. -// M201 - Set max acceleration in units/s^2 for print moves (M201 X1000 Y1000) -// M202 - Set max acceleration in units/s^2 for travel moves (M202 X1000 Y1000) -// M301 - Set PID parameters P I and D - - -//Stepper Movement Variables - -char axis_codes[NUM_AXIS] = { - 'X', 'Y', 'Z', 'E'}; -float destination[NUM_AXIS] = { - 0.0, 0.0, 0.0, 0.0}; -float current_position[NUM_AXIS] = { - 0.0, 0.0, 0.0, 0.0}; -bool home_all_axis = true; -long feedrate = 1500, next_feedrate, saved_feedrate; -long gcode_N, gcode_LastN; -bool relative_mode = false; //Determines Absolute or Relative Coordinates -bool relative_mode_e = false; //Determines Absolute or Relative E Codes while in Absolute Coordinates mode. E is always relative in Relative Coordinates mode. -unsigned long axis_steps_per_sqr_second[NUM_AXIS]; - -// comm variables -#define MAX_CMD_SIZE 96 -#define BUFSIZE 8 -char cmdbuffer[BUFSIZE][MAX_CMD_SIZE]; -bool fromsd[BUFSIZE]; -int bufindr = 0; -int bufindw = 0; -int buflen = 0; -int i = 0; -char serial_char; -int serial_count = 0; -boolean comment_mode = false; -char *strchr_pointer; // just a pointer to find chars in the cmd string like X, Y, Z, E, etc - -// Manage heater variables. - -int target_raw = 0; -int current_raw = 0; -unsigned char temp_meas_ready = false; - -#ifdef PIDTEMP - double temp_iState = 0; - double temp_dState = 0; - double pTerm; - double iTerm; - double dTerm; - //int output; - double pid_error; - double temp_iState_min; - double temp_iState_max; - double pid_setpoint = 0.0; - double pid_input; - double pid_output; - bool pid_reset; -#endif - -#ifdef WATCHPERIOD -int watch_raw = -1000; -unsigned long watchmillis = 0; -#endif -#ifdef MINTEMP -int minttemp = temp2analogh(MINTEMP); -#endif -#ifdef MAXTEMP -int maxttemp = temp2analogh(MAXTEMP); -#endif - -//Inactivity shutdown variables -unsigned long previous_millis_cmd = 0; -unsigned long max_inactive_time = 0; -unsigned long stepper_inactive_time = 0; - -#ifdef SDSUPPORT -Sd2Card card; -SdVolume volume; -SdFile root; -SdFile file; -uint32_t filesize = 0; -uint32_t sdpos = 0; -bool sdmode = false; -bool sdactive = false; -bool savetosd = false; -int16_t n; - -void initsd(){ - sdactive = false; -#if SDSS >- 1 - if(root.isOpen()) - root.close(); - if (!card.init(SPI_FULL_SPEED,SDSS)){ - //if (!card.init(SPI_HALF_SPEED,SDSS)) - Serial.println("SD init fail"); - } - else if (!volume.init(&card)) - Serial.println("volume.init failed"); - else if (!root.openRoot(&volume)) - Serial.println("openRoot failed"); - else - sdactive = true; -#endif -} - -inline void write_command(char *buf){ - char* begin = buf; - char* npos = 0; - char* end = buf + strlen(buf) - 1; - - file.writeError = false; - if((npos = strchr(buf, 'N')) != NULL){ - begin = strchr(npos, ' ') + 1; - end = strchr(npos, '*') - 1; - } - end[1] = '\r'; - end[2] = '\n'; - end[3] = '\0'; - //Serial.println(begin); - file.write(begin); - if (file.writeError){ - Serial.println("error writing to file"); - } -} -#endif - - -void setup() -{ - Serial.begin(BAUDRATE); - Serial.println("start"); - - for(int i = 0; i < BUFSIZE; i++){ - fromsd[i] = false; - } - - //Initialize Dir Pins -#if X_DIR_PIN > -1 - SET_OUTPUT(X_DIR_PIN); -#endif -#if Y_DIR_PIN > -1 - SET_OUTPUT(Y_DIR_PIN); -#endif -#if Z_DIR_PIN > -1 - SET_OUTPUT(Z_DIR_PIN); -#endif -#if E_DIR_PIN > -1 - SET_OUTPUT(E_DIR_PIN); -#endif - - //Initialize Enable Pins - steppers default to disabled. - -#if (X_ENABLE_PIN > -1) - SET_OUTPUT(X_ENABLE_PIN); - if(!X_ENABLE_ON) WRITE(X_ENABLE_PIN,HIGH); -#endif -#if (Y_ENABLE_PIN > -1) - SET_OUTPUT(Y_ENABLE_PIN); - if(!Y_ENABLE_ON) WRITE(Y_ENABLE_PIN,HIGH); -#endif -#if (Z_ENABLE_PIN > -1) - SET_OUTPUT(Z_ENABLE_PIN); - if(!Z_ENABLE_ON) WRITE(Z_ENABLE_PIN,HIGH); -#endif -#if (E_ENABLE_PIN > -1) - SET_OUTPUT(E_ENABLE_PIN); - if(!E_ENABLE_ON) WRITE(E_ENABLE_PIN,HIGH); -#endif - - //endstops and pullups -#ifdef ENDSTOPPULLUPS -#if X_MIN_PIN > -1 - SET_INPUT(X_MIN_PIN); - WRITE(X_MIN_PIN,HIGH); -#endif -#if X_MAX_PIN > -1 - SET_INPUT(X_MAX_PIN); - WRITE(X_MAX_PIN,HIGH); -#endif -#if Y_MIN_PIN > -1 - SET_INPUT(Y_MIN_PIN); - WRITE(Y_MIN_PIN,HIGH); -#endif -#if Y_MAX_PIN > -1 - SET_INPUT(Y_MAX_PIN); - WRITE(Y_MAX_PIN,HIGH); -#endif -#if Z_MIN_PIN > -1 - SET_INPUT(Z_MIN_PIN); - WRITE(Z_MIN_PIN,HIGH); -#endif -#if Z_MAX_PIN > -1 - SET_INPUT(Z_MAX_PIN); - WRITE(Z_MAX_PIN,HIGH); -#endif -#else -#if X_MIN_PIN > -1 - SET_INPUT(X_MIN_PIN); -#endif -#if X_MAX_PIN > -1 - SET_INPUT(X_MAX_PIN); -#endif -#if Y_MIN_PIN > -1 - SET_INPUT(Y_MIN_PIN); -#endif -#if Y_MAX_PIN > -1 - SET_INPUT(Y_MAX_PIN); -#endif -#if Z_MIN_PIN > -1 - SET_INPUT(Z_MIN_PIN); -#endif -#if Z_MAX_PIN > -1 - SET_INPUT(Z_MAX_PIN); -#endif -#endif - -#if (HEATER_0_PIN > -1) - SET_OUTPUT(HEATER_0_PIN); -#endif -#if (HEATER_1_PIN > -1) - SET_OUTPUT(HEATER_1_PIN); -#endif - - //Initialize Step Pins -#if (X_STEP_PIN > -1) - SET_OUTPUT(X_STEP_PIN); -#endif -#if (Y_STEP_PIN > -1) - SET_OUTPUT(Y_STEP_PIN); -#endif -#if (Z_STEP_PIN > -1) - SET_OUTPUT(Z_STEP_PIN); -#endif -#if (E_STEP_PIN > -1) - SET_OUTPUT(E_STEP_PIN); -#endif - for(int i=0; i < NUM_AXIS; i++){ - axis_steps_per_sqr_second[i] = max_acceleration_units_per_sq_second[i] * axis_steps_per_unit[i]; - } - -#ifdef PIDTEMP - temp_iState_min = 0.0; - temp_iState_max = PID_INTEGRAL_DRIVE_MAX / Ki; -#endif //PIDTEMP - -#ifdef SDSUPPORT - //power to SD reader -#if SDPOWER > -1 - SET_OUTPUT(SDPOWER); - WRITE(SDPOWER,HIGH); -#endif - initsd(); - -#endif - plan_init(); // Initialize planner; - st_init(); // Initialize stepper; - tp_init(); // Initialize temperature loop -} - - -void loop() -{ - if(buflen<3) - get_command(); - - if(buflen){ -#ifdef SDSUPPORT - if(savetosd){ - if(strstr(cmdbuffer[bufindr],"M29") == NULL){ - write_command(cmdbuffer[bufindr]); - Serial.println("ok"); - } - else{ - file.sync(); - file.close(); - savetosd = false; - Serial.println("Done saving file."); - } - } - else{ - process_commands(); - } -#else - process_commands(); -#endif - buflen = (buflen-1); - bufindr = (bufindr + 1)%BUFSIZE; - } - //check heater every n milliseconds - manage_heater(); - manage_inactivity(1); -} - - -inline void get_command() -{ - while( Serial.available() > 0 && buflen < BUFSIZE) { - serial_char = Serial.read(); - if(serial_char == '\n' || serial_char == '\r' || serial_char == ':' || serial_count >= (MAX_CMD_SIZE - 1) ) - { - if(!serial_count) return; //if empty line - cmdbuffer[bufindw][serial_count] = 0; //terminate string - if(!comment_mode){ - fromsd[bufindw] = false; - if(strstr(cmdbuffer[bufindw], "N") != NULL) - { - strchr_pointer = strchr(cmdbuffer[bufindw], 'N'); - gcode_N = (strtol(&cmdbuffer[bufindw][strchr_pointer - cmdbuffer[bufindw] + 1], NULL, 10)); - if(gcode_N != gcode_LastN+1 && (strstr(cmdbuffer[bufindw], "M110") == NULL) ) { - Serial.print("Serial Error: Line Number is not Last Line Number+1, Last Line:"); - Serial.println(gcode_LastN); - //Serial.println(gcode_N); - FlushSerialRequestResend(); - serial_count = 0; - return; - } - - if(strstr(cmdbuffer[bufindw], "*") != NULL) - { - byte checksum = 0; - byte count = 0; - while(cmdbuffer[bufindw][count] != '*') checksum = checksum^cmdbuffer[bufindw][count++]; - strchr_pointer = strchr(cmdbuffer[bufindw], '*'); - - if( (int)(strtod(&cmdbuffer[bufindw][strchr_pointer - cmdbuffer[bufindw] + 1], NULL)) != checksum) { - Serial.print("Error: checksum mismatch, Last Line:"); - Serial.println(gcode_LastN); - FlushSerialRequestResend(); - serial_count = 0; - return; - } - //if no errors, continue parsing - } - else - { - Serial.print("Error: No Checksum with line number, Last Line:"); - Serial.println(gcode_LastN); - FlushSerialRequestResend(); - serial_count = 0; - return; - } - - gcode_LastN = gcode_N; - //if no errors, continue parsing - } - else // if we don't receive 'N' but still see '*' - { - if((strstr(cmdbuffer[bufindw], "*") != NULL)) - { - Serial.print("Error: No Line Number with checksum, Last Line:"); - Serial.println(gcode_LastN); - serial_count = 0; - return; - } - } - if((strstr(cmdbuffer[bufindw], "G") != NULL)){ - strchr_pointer = strchr(cmdbuffer[bufindw], 'G'); - switch((int)((strtod(&cmdbuffer[bufindw][strchr_pointer - cmdbuffer[bufindw] + 1], NULL)))){ - case 0: - case 1: -#ifdef SDSUPPORT - if(savetosd) - break; -#endif - Serial.println("ok"); - break; - default: - break; - } - - } - bufindw = (bufindw + 1)%BUFSIZE; - buflen += 1; - - } - comment_mode = false; //for new command - serial_count = 0; //clear buffer - } - else - { - if(serial_char == ';') comment_mode = true; - if(!comment_mode) cmdbuffer[bufindw][serial_count++] = serial_char; - } - } -#ifdef SDSUPPORT - if(!sdmode || serial_count!=0){ - return; - } - while( filesize > sdpos && buflen < BUFSIZE) { - n = file.read(); - serial_char = (char)n; - if(serial_char == '\n' || serial_char == '\r' || serial_char == ':' || serial_count >= (MAX_CMD_SIZE - 1) || n == -1) - { - sdpos = file.curPosition(); - if(sdpos >= filesize){ - sdmode = false; - Serial.println("Done printing file"); - } - if(!serial_count) return; //if empty line - cmdbuffer[bufindw][serial_count] = 0; //terminate string - if(!comment_mode){ - fromsd[bufindw] = true; - buflen += 1; - bufindw = (bufindw + 1)%BUFSIZE; - } - comment_mode = false; //for new command - serial_count = 0; //clear buffer - } - else - { - if(serial_char == ';') comment_mode = true; - if(!comment_mode) cmdbuffer[bufindw][serial_count++] = serial_char; - } - } -#endif - -} - - -inline float code_value() { - return (strtod(&cmdbuffer[bufindr][strchr_pointer - cmdbuffer[bufindr] + 1], NULL)); -} -inline long code_value_long() { - return (strtol(&cmdbuffer[bufindr][strchr_pointer - cmdbuffer[bufindr] + 1], NULL, 10)); -} -inline bool code_seen(char code_string[]) { - return (strstr(cmdbuffer[bufindr], code_string) != NULL); -} //Return True if the string was found - -inline bool code_seen(char code) -{ - strchr_pointer = strchr(cmdbuffer[bufindr], code); - return (strchr_pointer != NULL); //Return True if a character was found -} - -inline void process_commands() -{ - unsigned long codenum; //throw away variable - char *starpos = NULL; - - if(code_seen('G')) - { - switch((int)code_value()) - { - case 0: // G0 -> G1 - case 1: // G1 - get_coordinates(); // For X Y Z E F - prepare_move(); - previous_millis_cmd = millis(); - //ClearToSend(); - return; - //break; - case 4: // G4 dwell - codenum = 0; - if(code_seen('P')) codenum = code_value(); // milliseconds to wait - if(code_seen('S')) codenum = code_value() * 1000; // seconds to wait - codenum += millis(); // keep track of when we started waiting - while(millis() < codenum ){ - manage_heater(); - } - break; - case 28: //G28 Home all Axis one at a time - saved_feedrate = feedrate; - for(int i=0; i < NUM_AXIS; i++) { - destination[i] = current_position[i]; - } - feedrate = 0; - - home_all_axis = !((code_seen(axis_codes[0])) || (code_seen(axis_codes[1])) || (code_seen(axis_codes[2]))); - - if((home_all_axis) || (code_seen(axis_codes[X_AXIS]))) { - if ((X_MIN_PIN > -1 && X_HOME_DIR==-1) || (X_MAX_PIN > -1 && X_HOME_DIR==1)){ - st_synchronize(); - current_position[X_AXIS] = 0; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[X_AXIS] = 1.5 * X_MAX_LENGTH * X_HOME_DIR; - feedrate = homing_feedrate[X_AXIS]; - prepare_move(); - - st_synchronize(); - current_position[X_AXIS] = 0; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[X_AXIS] = -5 * X_HOME_DIR; - prepare_move(); - - st_synchronize(); - destination[X_AXIS] = 10 * X_HOME_DIR; - feedrate = homing_feedrate[X_AXIS]/2 ; - prepare_move(); - st_synchronize(); - - current_position[X_AXIS] = (X_HOME_DIR == -1) ? 0 : X_MAX_LENGTH; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[X_AXIS] = current_position[X_AXIS]; - feedrate = 0; - } - } - - if((home_all_axis) || (code_seen(axis_codes[Y_AXIS]))) { - if ((Y_MIN_PIN > -1 && Y_HOME_DIR==-1) || (Y_MAX_PIN > -1 && Y_HOME_DIR==1)){ - current_position[Y_AXIS] = 0; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[Y_AXIS] = 1.5 * Y_MAX_LENGTH * Y_HOME_DIR; - feedrate = homing_feedrate[Y_AXIS]; - prepare_move(); - st_synchronize(); - - current_position[Y_AXIS] = 0; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[Y_AXIS] = -5 * Y_HOME_DIR; - prepare_move(); - st_synchronize(); - - destination[Y_AXIS] = 10 * Y_HOME_DIR; - feedrate = homing_feedrate[Y_AXIS]/2; - prepare_move(); - st_synchronize(); - - current_position[Y_AXIS] = (Y_HOME_DIR == -1) ? 0 : Y_MAX_LENGTH; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[Y_AXIS] = current_position[Y_AXIS]; - feedrate = 0; - } - } - - if((home_all_axis) || (code_seen(axis_codes[Z_AXIS]))) { - if ((Z_MIN_PIN > -1 && Z_HOME_DIR==-1) || (Z_MAX_PIN > -1 && Z_HOME_DIR==1)){ - current_position[Z_AXIS] = 0; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[Z_AXIS] = 1.5 * Z_MAX_LENGTH * Z_HOME_DIR; - feedrate = homing_feedrate[Z_AXIS]; - prepare_move(); - st_synchronize(); - - current_position[Z_AXIS] = 0; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[Z_AXIS] = -2 * Z_HOME_DIR; - prepare_move(); - st_synchronize(); - - destination[Z_AXIS] = 3 * Z_HOME_DIR; - feedrate = homing_feedrate[Z_AXIS]/2; - prepare_move(); - st_synchronize(); - - current_position[Z_AXIS] = (Z_HOME_DIR == -1) ? 0 : Z_MAX_LENGTH; - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - destination[Z_AXIS] = current_position[Z_AXIS]; - feedrate = 0; - } - } - feedrate = saved_feedrate; - previous_millis_cmd = millis(); - break; - case 90: // G90 - relative_mode = false; - break; - case 91: // G91 - relative_mode = true; - break; - case 92: // G92 - if(!code_seen(axis_codes[E_AXIS])) - st_synchronize(); - for(int i=0; i < NUM_AXIS; i++) { - if(code_seen(axis_codes[i])) current_position[i] = code_value(); - } - plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); - break; - - } - } - - else if(code_seen('M')) - { - - switch( (int)code_value() ) - { -#ifdef SDSUPPORT - - case 20: // M20 - list SD card - Serial.println("Begin file list"); - root.ls(); - Serial.println("End file list"); - break; - case 21: // M21 - init SD card - sdmode = false; - initsd(); - break; - case 22: //M22 - release SD card - sdmode = false; - sdactive = false; - break; - case 23: //M23 - Select file - if(sdactive){ - sdmode = false; - file.close(); - starpos = (strchr(strchr_pointer + 4,'*')); - if(starpos!=NULL) - *(starpos-1)='\0'; - if (file.open(&root, strchr_pointer + 4, O_READ)) { - Serial.print("File opened:"); - Serial.print(strchr_pointer + 4); - Serial.print(" Size:"); - Serial.println(file.fileSize()); - sdpos = 0; - filesize = file.fileSize(); - Serial.println("File selected"); - } - else{ - Serial.println("file.open failed"); - } - } - break; - case 24: //M24 - Start SD print - if(sdactive){ - sdmode = true; - } - break; - case 25: //M25 - Pause SD print - if(sdmode){ - sdmode = false; - } - break; - case 26: //M26 - Set SD index - if(sdactive && code_seen('S')){ - sdpos = code_value_long(); - file.seekSet(sdpos); - } - break; - case 27: //M27 - Get SD status - if(sdactive){ - Serial.print("SD printing byte "); - Serial.print(sdpos); - Serial.print("/"); - Serial.println(filesize); - } - else{ - Serial.println("Not SD printing"); - } - break; - case 28: //M28 - Start SD write - if(sdactive){ - char* npos = 0; - file.close(); - sdmode = false; - starpos = (strchr(strchr_pointer + 4,'*')); - if(starpos != NULL){ - npos = strchr(cmdbuffer[bufindr], 'N'); - strchr_pointer = strchr(npos,' ') + 1; - *(starpos-1) = '\0'; - } - if (!file.open(&root, strchr_pointer+4, O_CREAT | O_APPEND | O_WRITE | O_TRUNC)) - { - Serial.print("open failed, File: "); - Serial.print(strchr_pointer + 4); - Serial.print("."); - } - else{ - savetosd = true; - Serial.print("Writing to file: "); - Serial.println(strchr_pointer + 4); - } - } - break; - case 29: //M29 - Stop SD write - //processed in write to file routine above - //savetosd = false; - break; -#endif - case 104: // M104 -#ifdef PID_OPENLOOP - if (code_seen('S')) PidTemp_Output = code_value() * (PID_MAX/100.0); - if(pid_output > PID_MAX) pid_output = PID_MAX; - if(pid_output < 0) pid_output = 0; -#else //PID_OPENLOOP - if (code_seen('S')) { - target_raw = temp2analogh(code_value()); -#ifdef PIDTEMP - pid_setpoint = code_value(); -#endif //PIDTEMP - } -#ifdef WATCHPERIOD - if(target_raw > current_raw){ - watchmillis = max(1,millis()); - watch_raw = current_raw; - } - else{ - watchmillis = 0; - } -#endif //WATCHPERIOD -#endif //PID_OPENLOOP - break; - case 105: // M105 - Serial.print("ok T:"); - Serial.println(analog2temp(current_raw)); - return; - //break; - case 109: // M109 - Wait for extruder heater to reach target. - if (code_seen('S')) target_raw = temp2analogh(code_value()); -#ifdef WATCHPERIOD - if(target_raw>current_raw){ - watchmillis = max(1,millis()); - watch_raw = current_raw; - } - else{ - watchmillis = 0; - } -#endif - codenum = millis(); - while(current_raw < target_raw) { - if( (millis() - codenum) > 1000 ) //Print Temp Reading every 1 second while heating up. - { - Serial.print("T:"); - Serial.println( analog2temp(current_raw)); - codenum = millis(); - } - manage_heater(); - } - break; - case 190: - break; - case 82: - axis_relative_modes[3] = false; - break; - case 83: - axis_relative_modes[3] = true; - break; - case 84: - if(code_seen('S')){ - stepper_inactive_time = code_value() * 1000; - } - else{ - st_synchronize(); - disable_x(); - disable_y(); - disable_z(); - disable_e(); - } - break; - case 85: // M85 - code_seen('S'); - max_inactive_time = code_value() * 1000; - break; - case 92: // M92 - for(int i=0; i < NUM_AXIS; i++) { - if(code_seen(axis_codes[i])) axis_steps_per_unit[i] = code_value(); - } - - break; - case 115: // M115 - Serial.println("FIRMWARE_NAME:Sprinter/grbl mashup for gen6 FIRMWARE_URL:http://www.mendel-parts.com PROTOCOL_VERSION:1.0 MACHINE_TYPE:Mendel EXTRUDER_COUNT:1"); - break; - case 114: // M114 - Serial.print("X:"); - Serial.print(current_position[X_AXIS]); - Serial.print("Y:"); - Serial.print(current_position[Y_AXIS]); - Serial.print("Z:"); - Serial.print(current_position[Z_AXIS]); - Serial.print("E:"); - Serial.println(current_position[E_AXIS]); - break; - case 119: // M119 -#if (X_MIN_PIN > -1) - Serial.print("x_min:"); - Serial.print((READ(X_MIN_PIN)^ENDSTOPS_INVERTING)?"H ":"L "); -#endif -#if (X_MAX_PIN > -1) - Serial.print("x_max:"); - Serial.print((READ(X_MAX_PIN)^ENDSTOPS_INVERTING)?"H ":"L "); -#endif -#if (Y_MIN_PIN > -1) - Serial.print("y_min:"); - Serial.print((READ(Y_MIN_PIN)^ENDSTOPS_INVERTING)?"H ":"L "); -#endif -#if (Y_MAX_PIN > -1) - Serial.print("y_max:"); - Serial.print((READ(Y_MAX_PIN)^ENDSTOPS_INVERTING)?"H ":"L "); -#endif -#if (Z_MIN_PIN > -1) - Serial.print("z_min:"); - Serial.print((READ(Z_MIN_PIN)^ENDSTOPS_INVERTING)?"H ":"L "); -#endif -#if (Z_MAX_PIN > -1) - Serial.print("z_max:"); - Serial.print((READ(Z_MAX_PIN)^ENDSTOPS_INVERTING)?"H ":"L "); -#endif - Serial.println(""); - break; - //TODO: update for all axis, use for loop - case 201: // M201 - for(int i=0; i < NUM_AXIS; i++) { - if(code_seen(axis_codes[i])) axis_steps_per_sqr_second[i] = code_value() * axis_steps_per_unit[i]; - } - break; -#if 0 // Not used for Sprinter/grbl gen6 - case 202: // M202 - for(int i=0; i < NUM_AXIS; i++) { - if(code_seen(axis_codes[i])) axis_travel_steps_per_sqr_second[i] = code_value() * axis_steps_per_unit[i]; - } - break; -#endif -#ifdef PIDTEMP - case 301: // M301 - if(code_seen('P')) Kp = code_value(); - if(code_seen('I')) Ki = code_value()*PID_dT; - if(code_seen('D')) Kd = code_value()/PID_dT; - Serial.print("Kp ");Serial.println(Kp); - Serial.print("Ki ");Serial.println(Ki/PID_dT); - Serial.print("Kd ");Serial.println(Kd*PID_dT); - temp_iState_min = 0.0; - temp_iState_max = PID_INTEGRAL_DRIVE_MAX / Ki; - break; -#endif //PIDTEMP - } - } - else{ - Serial.println("Unknown command:"); - Serial.println(cmdbuffer[bufindr]); - } - - ClearToSend(); -} - -void FlushSerialRequestResend() -{ - //char cmdbuffer[bufindr][100]="Resend:"; - Serial.flush(); - Serial.print("Resend:"); - Serial.println(gcode_LastN + 1); - ClearToSend(); -} - -void ClearToSend() -{ - previous_millis_cmd = millis(); -#ifdef SDSUPPORT - if(fromsd[bufindr]) - return; -#endif - Serial.println("ok"); -} - -inline void get_coordinates() -{ - for(int i=0; i < NUM_AXIS; i++) { - if(code_seen(axis_codes[i])) destination[i] = (float)code_value() + (axis_relative_modes[i] || relative_mode)*current_position[i]; - else destination[i] = current_position[i]; //Are these else lines really needed? - } - if(code_seen('F')) { - next_feedrate = code_value(); - if(next_feedrate > 0.0) feedrate = next_feedrate; - } -} - -void prepare_move() -{ - plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60); - for(int i=0; i < NUM_AXIS; i++) { - current_position[i] = destination[i]; - } -} - -void manage_heater() -{ - float pid_input; - float pid_output; - if(temp_meas_ready != true) - return; - -CRITICAL_SECTION_START; - temp_meas_ready = false; -CRITICAL_SECTION_END; - -#ifdef PIDTEMP - pid_input = analog2temp(current_raw);//ACT - -#ifndef PID_OPENLOOP - pid_error = pid_setpoint - pid_input; - if(pid_error > 10){ - pid_output = PID_MAX; - pid_reset = true; - } - else if(pid_error < -10) { - pid_output = 0; - pid_reset = true; - } - else { - if(pid_reset == true) { - temp_iState = 0.0; - pid_reset = false; - } - pTerm = Kp * pid_error; - temp_iState += pid_error; - temp_iState = constrain(temp_iState, temp_iState_min, temp_iState_max); - iTerm = Ki * temp_iState; - #define K1 0.8 - #define K2 (1.0-K1) - dTerm = (Kd * (pid_input - temp_dState))*K2 + (K1 * dTerm); - temp_dState = pid_input; - pid_output = constrain(pTerm + iTerm - dTerm, 0, PID_MAX); - } -#endif //PID_OPENLOOP -#ifdef PID_DEBUG - Serial.print(" Input "); - Serial.print(pid_input); - Serial.print(" Output "); - Serial.print(pid_output); - Serial.print(" pTerm "); - Serial.print(pTerm); - Serial.print(" iTerm "); - Serial.print(iTerm); - Serial.print(" dTerm "); - Serial.print(dTerm); - Serial.println(); -#endif //PID_DEBUG - OCR2B = pid_output; -#endif -} - - -int temp2analogu(int celsius, const short table[][2], int numtemps) { - int raw = 0; - byte i; - - for (i=1; i raw) { - celsius = (float)table[i-1][1] + - (float)(raw - table[i-1][0]) * - (float)(table[i][1] - table[i-1][1]) / - (float)(table[i][0] - table[i-1][0]); - - break; - } - } - // Overflow: Set to last value in the table - if (i == numtemps) celsius = table[i-1][1]; - - return celsius; -} - - -inline void kill() -{ - target_raw=0; -#ifdef PIDTEMP - pid_setpoint = 0.0; -#endif PIDTEMP - OCR2B = 0; - WRITE(HEATER_0_PIN,LOW); - - disable_x(); - disable_y(); - disable_z(); - disable_e(); - -} - -inline void manage_inactivity(byte debug) { - if( (millis()-previous_millis_cmd) > max_inactive_time ) if(max_inactive_time) kill(); - if( (millis()-previous_millis_cmd) > stepper_inactive_time ) if(stepper_inactive_time) { - disable_x(); - disable_y(); - disable_z(); - disable_e(); - } - check_axes_activity(); -} - -// Planner - -/* - Reasoning behind the mathematics in this module (in the key of 'Mathematica'): - - s == speed, a == acceleration, t == time, d == distance - - Basic definitions: - - Speed[s_, a_, t_] := s + (a*t) - Travel[s_, a_, t_] := Integrate[Speed[s, a, t], t] - - Distance to reach a specific speed with a constant acceleration: - - Solve[{Speed[s, a, t] == m, Travel[s, a, t] == d}, d, t] - d -> (m^2 - s^2)/(2 a) --> estimate_acceleration_distance() - - Speed after a given distance of travel with constant acceleration: - - Solve[{Speed[s, a, t] == m, Travel[s, a, t] == d}, m, t] - m -> Sqrt[2 a d + s^2] - - DestinationSpeed[s_, a_, d_] := Sqrt[2 a d + s^2] - - When to start braking (di) to reach a specified destionation speed (s2) after accelerating - from initial speed s1 without ever stopping at a plateau: - - Solve[{DestinationSpeed[s1, a, di] == DestinationSpeed[s2, a, d - di]}, di] - di -> (2 a d - s1^2 + s2^2)/(4 a) --> intersection_distance() - - IntersectionDistance[s1_, s2_, a_, d_] := (2 a d - s1^2 + s2^2)/(4 a) - */ - - -// The number of linear motions that can be in the plan at any give time -#define BLOCK_BUFFER_SIZE 16 -#define BLOCK_BUFFER_MASK 0x0f - -static block_t block_buffer[BLOCK_BUFFER_SIZE]; // A ring buffer for motion instructions -static volatile unsigned char block_buffer_head; // Index of the next block to be pushed -static volatile unsigned char block_buffer_tail; // Index of the block to process now - -// The current position of the tool in absolute steps -static long position[4]; - -#define ONE_MINUTE_OF_MICROSECONDS 60000000.0 - -// Calculates the distance (not time) it takes to accelerate from initial_rate to target_rate using the -// given acceleration: -inline long estimate_acceleration_distance(long initial_rate, long target_rate, long acceleration) { - return( - (target_rate*target_rate-initial_rate*initial_rate)/ - (2L*acceleration) - ); -} - -// This function gives you the point at which you must start braking (at the rate of -acceleration) if -// you started at speed initial_rate and accelerated until this point and want to end at the final_rate after -// a total travel of distance. This can be used to compute the intersection point between acceleration and -// deceleration in the cases where the trapezoid has no plateau (i.e. never reaches maximum speed) - -inline long intersection_distance(long initial_rate, long final_rate, long acceleration, long distance) { - return( - (2*acceleration*distance-initial_rate*initial_rate+final_rate*final_rate)/ - (4*acceleration) - ); -} - -// Calculates trapezoid parameters so that the entry- and exit-speed is compensated by the provided factors. - -void calculate_trapezoid_for_block(block_t *block, float entry_speed, float exit_speed) { - if(block->busy == true) return; // If block is busy then bail out. - float entry_factor = entry_speed / block->nominal_speed; - float exit_factor = exit_speed / block->nominal_speed; - long initial_rate = ceil(block->nominal_rate*entry_factor); - long final_rate = ceil(block->nominal_rate*exit_factor); - -#ifdef ADVANCE - long initial_advance = block->advance*entry_factor*entry_factor; - long final_advance = block->advance*exit_factor*exit_factor; -#endif // ADVANCE - - // Limit minimal step rate (Otherwise the timer will overflow.) - if(initial_rate <32) initial_rate=32; - if(final_rate < 32) final_rate=32; - - // Calculate the acceleration steps - long acceleration = block->acceleration; - long accelerate_steps = estimate_acceleration_distance(initial_rate, block->nominal_rate, acceleration); - long decelerate_steps = estimate_acceleration_distance(final_rate, block->nominal_rate, acceleration); - - // Calculate the size of Plateau of Nominal Rate. - long plateau_steps = block->step_event_count-accelerate_steps-decelerate_steps; - - // Is the Plateau of Nominal Rate smaller than nothing? That means no cruising, and we will - // have to use intersection_distance() to calculate when to abort acceleration and start braking - // in order to reach the final_rate exactly at the end of this block. - if (plateau_steps < 0) { - accelerate_steps = intersection_distance(initial_rate, final_rate, acceleration, block->step_event_count); - plateau_steps = 0; - } - - long decelerate_after = accelerate_steps+plateau_steps; - long acceleration_rate = (long)((float)acceleration * 8.388608); - - CRITICAL_SECTION_START; // Fill variables used by the stepper in a critical section - if(block->busy == false) { // Don't update variables if block is busy. - block->accelerate_until = accelerate_steps; - block->decelerate_after = decelerate_after; - block->acceleration_rate = acceleration_rate; - block->initial_rate = initial_rate; - block->final_rate = final_rate; -#ifdef ADVANCE - block->initial_advance = initial_advance; - block->final_advance = final_advance; -#endif ADVANCE - } - CRITICAL_SECTION_END; -} - -// Calculates the maximum allowable speed at this point when you must be able to reach target_velocity using the -// acceleration within the allotted distance. -inline float max_allowable_speed(float acceleration, float target_velocity, float distance) { - return( - sqrt(target_velocity*target_velocity-2*acceleration*60*60*distance) - ); -} - -// "Junction jerk" in this context is the immediate change in speed at the junction of two blocks. -// This method will calculate the junction jerk as the euclidean distance between the nominal -// velocities of the respective blocks. -inline float junction_jerk(block_t *before, block_t *after) { - return(sqrt( - pow((before->speed_x-after->speed_x), 2)+ - pow((before->speed_y-after->speed_y), 2)+ - pow((before->speed_z-after->speed_z)*axis_steps_per_unit[Z_AXIS]/axis_steps_per_unit[X_AXIS], 2)) - ); -} - -// Return the safe speed which is max_jerk/2, e.g. the -// speed under which you cannot exceed max_jerk no matter what you do. -float safe_speed(block_t *block) { - float safe_speed; - safe_speed = max_jerk/2; - if (safe_speed > block->nominal_speed) safe_speed = block->nominal_speed; - return safe_speed; -} - -// The kernel called by planner_recalculate() when scanning the plan from last to first entry. -void planner_reverse_pass_kernel(block_t *previous, block_t *current, block_t *next) { - if(!current) { - return; - } - - float entry_speed = current->nominal_speed; - float exit_factor; - float exit_speed; - if (next) { - exit_speed = next->entry_speed; - } - else { - exit_speed = safe_speed(current); - } - - // Calculate the entry_factor for the current block. - if (previous) { - // Reduce speed so that junction_jerk is within the maximum allowed - float jerk = junction_jerk(previous, current); - if((previous->steps_x == 0) && (previous->steps_y == 0)) { - entry_speed = safe_speed(current); - } - else if (jerk > max_jerk) { - entry_speed = (max_jerk/jerk) * entry_speed; - } - // If the required deceleration across the block is too rapid, reduce the entry_factor accordingly. - if (entry_speed > exit_speed) { - float max_entry_speed = max_allowable_speed(-acceleration,exit_speed, current->millimeters); - if (max_entry_speed < entry_speed) { - entry_speed = max_entry_speed; - } - } - } - else { - entry_speed = safe_speed(current); - } - // Store result - current->entry_speed = entry_speed; -} - -// planner_recalculate() needs to go over the current plan twice. Once in reverse and once forward. This -// implements the reverse pass. -void planner_reverse_pass() { - char block_index = block_buffer_head; - block_t *block[3] = { - NULL, NULL, NULL }; - while(block_index != block_buffer_tail) { - block_index--; - if(block_index < 0) { - block_index = BLOCK_BUFFER_SIZE-1; - } - block[2]= block[1]; - block[1]= block[0]; - block[0] = &block_buffer[block_index]; - planner_reverse_pass_kernel(block[0], block[1], block[2]); - } - planner_reverse_pass_kernel(NULL, block[0], block[1]); -} - -// The kernel called by planner_recalculate() when scanning the plan from first to last entry. -void planner_forward_pass_kernel(block_t *previous, block_t *current, block_t *next) { - if(!current) { - return; - } - if(previous) { - // If the previous block is an acceleration block, but it is not long enough to - // complete the full speed change within the block, we need to adjust out entry - // speed accordingly. Remember current->entry_factor equals the exit factor of - // the previous block. - if(previous->entry_speed < current->entry_speed) { - float max_entry_speed = max_allowable_speed(-acceleration, previous->entry_speed, previous->millimeters); - if (max_entry_speed < current->entry_speed) { - current->entry_speed = max_entry_speed; - } - } - } -} - -// planner_recalculate() needs to go over the current plan twice. Once in reverse and once forward. This -// implements the forward pass. -void planner_forward_pass() { - char block_index = block_buffer_tail; - block_t *block[3] = { - NULL, NULL, NULL }; - - while(block_index != block_buffer_head) { - block[0] = block[1]; - block[1] = block[2]; - block[2] = &block_buffer[block_index]; - planner_forward_pass_kernel(block[0],block[1],block[2]); - block_index = (block_index+1) & BLOCK_BUFFER_MASK; - } - planner_forward_pass_kernel(block[1], block[2], NULL); -} - -// Recalculates the trapezoid speed profiles for all blocks in the plan according to the -// entry_factor for each junction. Must be called by planner_recalculate() after -// updating the blocks. -void planner_recalculate_trapezoids() { - char block_index = block_buffer_tail; - block_t *current; - block_t *next = NULL; - while(block_index != block_buffer_head) { - current = next; - next = &block_buffer[block_index]; - if (current) { - calculate_trapezoid_for_block(current, current->entry_speed, next->entry_speed); - } - block_index = (block_index+1) & BLOCK_BUFFER_MASK; - } - calculate_trapezoid_for_block(next, next->entry_speed, safe_speed(next)); -} - -// Recalculates the motion plan according to the following algorithm: -// -// 1. Go over every block in reverse order and calculate a junction speed reduction (i.e. block_t.entry_factor) -// so that: -// a. The junction jerk is within the set limit -// b. No speed reduction within one block requires faster deceleration than the one, true constant -// acceleration. -// 2. Go over every block in chronological order and dial down junction speed reduction values if -// a. The speed increase within one block would require faster accelleration than the one, true -// constant acceleration. -// -// When these stages are complete all blocks have an entry_factor that will allow all speed changes to -// be performed using only the one, true constant acceleration, and where no junction jerk is jerkier than -// the set limit. Finally it will: -// -// 3. Recalculate trapezoids for all blocks. - -void planner_recalculate() { - planner_reverse_pass(); - planner_forward_pass(); - planner_recalculate_trapezoids(); -} - -void plan_init() { - block_buffer_head = 0; - block_buffer_tail = 0; - memset(position, 0, sizeof(position)); // clear position -} - - -inline void plan_discard_current_block() { - if (block_buffer_head != block_buffer_tail) { - block_buffer_tail = (block_buffer_tail + 1) & BLOCK_BUFFER_MASK; - } -} - -inline block_t *plan_get_current_block() { - if (block_buffer_head == block_buffer_tail) { - return(NULL); - } - block_t *block = &block_buffer[block_buffer_tail]; - block->busy = true; - return(block); -} - -void check_axes_activity() { - unsigned char x_active = 0; - unsigned char y_active = 0; - unsigned char z_active = 0; - unsigned char e_active = 0; - block_t *block; - - if(block_buffer_tail != block_buffer_head) { - char block_index = block_buffer_tail; - while(block_index != block_buffer_head) { - block = &block_buffer[block_index]; - if(block->steps_x != 0) x_active++; - if(block->steps_y != 0) y_active++; - if(block->steps_z != 0) z_active++; - if(block->steps_e != 0) e_active++; - block_index = (block_index+1) & BLOCK_BUFFER_MASK; - } - } - if((DISABLE_X) && (x_active == 0)) disable_x(); - if((DISABLE_Y) && (y_active == 0)) disable_y(); - if((DISABLE_Z) && (z_active == 0)) disable_z(); - if((DISABLE_E) && (e_active == 0)) disable_e(); -} - -// Add a new linear movement to the buffer. steps_x, _y and _z is the absolute position in -// mm. Microseconds specify how many microseconds the move should take to perform. To aid acceleration -// calculation the caller must also provide the physical length of the line in millimeters. -void plan_buffer_line(float x, float y, float z, float e, float feed_rate) { - - // The target position of the tool in absolute steps - // Calculate target position in absolute steps - long target[4]; - target[X_AXIS] = lround(x*axis_steps_per_unit[X_AXIS]); - target[Y_AXIS] = lround(y*axis_steps_per_unit[Y_AXIS]); - target[Z_AXIS] = lround(z*axis_steps_per_unit[Z_AXIS]); - target[E_AXIS] = lround(e*axis_steps_per_unit[E_AXIS]); - - // Calculate the buffer head after we push this byte - int next_buffer_head = (block_buffer_head + 1) & BLOCK_BUFFER_MASK; - - // If the buffer is full: good! That means we are well ahead of the robot. - // Rest here until there is room in the buffer. - while(block_buffer_tail == next_buffer_head) { - manage_heater(); - manage_inactivity(1); - } - - // Prepare to set up new block - block_t *block = &block_buffer[block_buffer_head]; - - // Mark block as not busy (Not executed by the stepper interrupt) - block->busy = false; - - // Number of steps for each axis - block->steps_x = labs(target[X_AXIS]-position[X_AXIS]); - block->steps_y = labs(target[Y_AXIS]-position[Y_AXIS]); - block->steps_z = labs(target[Z_AXIS]-position[Z_AXIS]); - block->steps_e = labs(target[E_AXIS]-position[E_AXIS]); - block->step_event_count = max(block->steps_x, max(block->steps_y, max(block->steps_z, block->steps_e))); - - // Bail if this is a zero-length block - if (block->step_event_count == 0) { - return; - }; - - float delta_x_mm = (target[X_AXIS]-position[X_AXIS])/axis_steps_per_unit[X_AXIS]; - float delta_y_mm = (target[Y_AXIS]-position[Y_AXIS])/axis_steps_per_unit[Y_AXIS]; - float delta_z_mm = (target[Z_AXIS]-position[Z_AXIS])/axis_steps_per_unit[Z_AXIS]; - float delta_e_mm = (target[E_AXIS]-position[E_AXIS])/axis_steps_per_unit[E_AXIS]; - block->millimeters = sqrt(square(delta_x_mm) + square(delta_y_mm) + square(delta_z_mm) + square(delta_e_mm)); - - unsigned long microseconds; - microseconds = lround((block->millimeters/feed_rate)*1000000); - - // Calculate speed in mm/minute for each axis - float multiplier = 60.0*1000000.0/microseconds; - block->speed_z = delta_z_mm * multiplier; - block->speed_x = delta_x_mm * multiplier; - block->speed_y = delta_y_mm * multiplier; - block->speed_e = delta_e_mm * multiplier; - - // Limit speed per axis - float speed_factor = 1; - float tmp_speed_factor; - if(abs(block->speed_x) > max_feedrate[X_AXIS]) { - speed_factor = max_feedrate[Y_AXIS] / abs(block->speed_x); - } - if(abs(block->speed_y) > max_feedrate[Y_AXIS]){ - tmp_speed_factor = max_feedrate[Y_AXIS] / abs(block->speed_y); - if(speed_factor > tmp_speed_factor) speed_factor = tmp_speed_factor; - } - if(abs(block->speed_z) > max_feedrate[Z_AXIS]){ - tmp_speed_factor = max_feedrate[Z_AXIS] / abs(block->speed_z); - if(tmp_speed_factor < speed_factor) speed_factor = tmp_speed_factor; - } - if(abs(block->speed_e) > max_feedrate[E_AXIS]){ - tmp_speed_factor = max_feedrate[E_AXIS] / abs(block->speed_e); - if(tmp_speed_factor < speed_factor) speed_factor = tmp_speed_factor; - } - multiplier = multiplier * speed_factor; - block->speed_z = delta_z_mm * multiplier; - block->speed_x = delta_x_mm * multiplier; - block->speed_y = delta_y_mm * multiplier; - block->speed_e = delta_e_mm * multiplier; - - block->nominal_speed = block->millimeters * multiplier; - block->nominal_rate = ceil(block->step_event_count * multiplier / 60); - if(block->nominal_rate < 32) block->nominal_rate = 32; - block->entry_speed = safe_speed(block); - - // Compute the acceleration rate for the trapezoid generator. - float travel_per_step = block->millimeters/block->step_event_count; - if(block->steps_x == 0 && block->steps_y == 0 && block->steps_z == 0) { - block->acceleration = ceil( (retract_acceleration)/travel_per_step); // convert to: acceleration steps/sec^2 - } - else { - block->acceleration = ceil( (acceleration)/travel_per_step); // convert to: acceleration steps/sec^2 - // Limit acceleration per axis - if((block->acceleration * block->steps_x / block->step_event_count) > axis_steps_per_sqr_second[X_AXIS]) - block->acceleration = axis_steps_per_sqr_second[X_AXIS]; - if((block->acceleration * block->steps_y / block->step_event_count) > axis_steps_per_sqr_second[Y_AXIS]) - block->acceleration = axis_steps_per_sqr_second[Y_AXIS]; - if((block->acceleration * block->steps_e / block->step_event_count) > axis_steps_per_sqr_second[E_AXIS]) - block->acceleration = axis_steps_per_sqr_second[E_AXIS]; - if((block->acceleration * block->steps_z / block->step_event_count) > axis_steps_per_sqr_second[Z_AXIS]) - block->acceleration = axis_steps_per_sqr_second[Z_AXIS]; - } - -#ifdef ADVANCE - // Calculate advance rate - if((block->steps_e == 0) || (block->steps_x == 0 && block->steps_y == 0 && block->steps_z == 0)) { - block->advance_rate = 0; - block->advance = 0; - } - else { - long acc_dist = estimate_acceleration_distance(0, block->nominal_rate, block->acceleration); - float advance = (STEPS_PER_CUBIC_MM_E * EXTRUDER_ADVANCE_K) * - (block->speed_e * block->speed_e * EXTRUTION_AREA * EXTRUTION_AREA / 3600.0)*65536; - block->advance = advance; - if(acc_dist == 0) { - block->advance_rate = 0; - } - else { - block->advance_rate = advance / (float)acc_dist; - } - } - -#endif // ADVANCE - - // compute a preliminary conservative acceleration trapezoid - float safespeed = safe_speed(block); - calculate_trapezoid_for_block(block, safespeed, safespeed); - - // Compute direction bits for this block - block->direction_bits = 0; - if (target[X_AXIS] < position[X_AXIS]) { - block->direction_bits |= (1<direction_bits |= (1<direction_bits |= (1<direction_bits |= (1<steps_x != 0) enable_x(); - if(block->steps_y != 0) enable_y(); - if(block->steps_z != 0) enable_z(); - if(block->steps_e != 0) enable_e(); - - // Move buffer head - block_buffer_head = next_buffer_head; - - // Update position - memcpy(position, target, sizeof(target)); // position[] = target[] - - planner_recalculate(); - st_wake_up(); -} - -void plan_set_position(float x, float y, float z, float e) -{ - position[X_AXIS] = lround(x*axis_steps_per_unit[X_AXIS]); - position[Y_AXIS] = lround(y*axis_steps_per_unit[Y_AXIS]); - position[Z_AXIS] = lround(z*axis_steps_per_unit[Z_AXIS]); - position[E_AXIS] = lround(e*axis_steps_per_unit[E_AXIS]); -} - -// Stepper - -// intRes = intIn1 * intIn2 >> 16 -// uses: -// r26 to store 0 -// r27 to store the byte 1 of the 24 bit result -#define MultiU16X8toH16(intRes, charIn1, intIn2) \ -asm volatile ( \ -"clr r26 \n\t" \ -"mul %A1, %B2 \n\t" \ -"movw %A0, r0 \n\t" \ -"mul %A1, %A2 \n\t" \ -"add %A0, r1 \n\t" \ -"adc %B0, r26 \n\t" \ -"lsr r0 \n\t" \ -"adc %A0, r26 \n\t" \ -"adc %B0, r26 \n\t" \ -"clr r1 \n\t" \ -: \ -"=&r" (intRes) \ -: \ -"d" (charIn1), \ -"d" (intIn2) \ -: \ -"r26" , "r27" \ -) - -// intRes = longIn1 * longIn2 >> 24 -// uses: -// r26 to store 0 -// r27 to store the byte 1 of the 48bit result -#define MultiU24X24toH16(intRes, longIn1, longIn2) \ -asm volatile ( \ -"clr r26 \n\t" \ -"mul %A1, %B2 \n\t" \ -"mov r27, r1 \n\t" \ -"mul %B1, %C2 \n\t" \ -"movw %A0, r0 \n\t" \ -"mul %C1, %C2 \n\t" \ -"add %B0, r0 \n\t" \ -"mul %C1, %B2 \n\t" \ -"add %A0, r0 \n\t" \ -"adc %B0, r1 \n\t" \ -"mul %A1, %C2 \n\t" \ -"add r27, r0 \n\t" \ -"adc %A0, r1 \n\t" \ -"adc %B0, r26 \n\t" \ -"mul %B1, %B2 \n\t" \ -"add r27, r0 \n\t" \ -"adc %A0, r1 \n\t" \ -"adc %B0, r26 \n\t" \ -"mul %C1, %A2 \n\t" \ -"add r27, r0 \n\t" \ -"adc %A0, r1 \n\t" \ -"adc %B0, r26 \n\t" \ -"mul %B1, %A2 \n\t" \ -"add r27, r1 \n\t" \ -"adc %A0, r26 \n\t" \ -"adc %B0, r26 \n\t" \ -"lsr r27 \n\t" \ -"adc %A0, r26 \n\t" \ -"adc %B0, r26 \n\t" \ -"clr r1 \n\t" \ -: \ -"=&r" (intRes) \ -: \ -"d" (longIn1), \ -"d" (longIn2) \ -: \ -"r26" , "r27" \ -) - -// Some useful constants - -#define ENABLE_STEPPER_DRIVER_INTERRUPT() TIMSK1 |= (1< -// -// The trapezoid is the shape the speed curve over time. It starts at block->initial_rate, accelerates -// first block->accelerate_until step_events_completed, then keeps going at constant speed until -// step_events_completed reaches block->decelerate_after after which it decelerates until the trapezoid generator is reset. -// The slope of acceleration is calculated with the leib ramp alghorithm. - -void st_wake_up() { - // TCNT1 = 0; - ENABLE_STEPPER_DRIVER_INTERRUPT(); -} - -inline unsigned short calc_timer(unsigned short step_rate) { - unsigned short timer; - if(step_rate < 32) step_rate = 32; - step_rate -= 32; // Correct for minimal speed - if(step_rate > (8*256)){ // higher step rate - unsigned short table_address = (unsigned short)&speed_lookuptable_fast[(unsigned char)(step_rate>>8)][0]; - unsigned char tmp_step_rate = (step_rate & 0x00ff); - unsigned short gain = (unsigned short)pgm_read_word_near(table_address+2); - MultiU16X8toH16(timer, tmp_step_rate, gain); - timer = (unsigned short)pgm_read_word_near(table_address) - timer; - } - else { // lower step rates - unsigned short table_address = (unsigned short)&speed_lookuptable_slow[0][0]; - table_address += ((step_rate)>>1) & 0xfffc; - timer = (unsigned short)pgm_read_word_near(table_address); - timer -= (((unsigned short)pgm_read_word_near(table_address+2) * (unsigned char)(step_rate & 0x0007))>>3); - } - if(timer < 100) timer = 100; - return timer; -} - -// Initializes the trapezoid generator from the current block. Called whenever a new -// block begins. -inline void trapezoid_generator_reset() { - accelerate_until = current_block->accelerate_until; - decelerate_after = current_block->decelerate_after; - acceleration_rate = current_block->acceleration_rate; - initial_rate = current_block->initial_rate; - final_rate = current_block->final_rate; - advance = current_block->initial_advance; - final_advance = current_block->final_advance; - deceleration_time = 0; - advance_rate = current_block->advance_rate; - // step_rate to timer interval - acc_step_rate = initial_rate; - acceleration_time = calc_timer(acc_step_rate); - OCR1A = acceleration_time; -} - -// "The Stepper Driver Interrupt" - This timer interrupt is the workhorse. -// It pops blocks from the block_buffer and executes them by pulsing the stepper pins appropriately. -ISR(TIMER1_COMPA_vect) -{ - if(busy){ /*Serial.println("BUSY")*/; - return; - } // The busy-flag is used to avoid reentering this interrupt - - busy = true; - sei(); // Re enable interrupts (normally disabled while inside an interrupt handler) - - // If there is no current block, attempt to pop one from the buffer - if (current_block == NULL) { - // Anything in the buffer? - current_block = plan_get_current_block(); - if (current_block != NULL) { - trapezoid_generator_reset(); - counter_x = -(current_block->step_event_count >> 1); - counter_y = counter_x; - counter_z = counter_x; - counter_e = counter_x; - step_events_completed = 0; - e_steps = 0; - } - else { - DISABLE_STEPPER_DRIVER_INTERRUPT(); - } - } - - if (current_block != NULL) { - // Set directions TO DO This should be done once during init of trapezoid. Endstops -> interrupt - out_bits = current_block->direction_bits; - -#ifdef ADVANCE - // Calculate E early. - counter_e += current_block->steps_e; - if (counter_e > 0) { - counter_e -= current_block->step_event_count; - if ((out_bits & (1<> 16) - old_advance); - CRITICAL_SECTION_END; - old_advance = advance >> 16; -#endif //ADVANCE - - // Set direction en check limit switches - if ((out_bits & (1<step_event_count; - } - } - else // +direction - WRITE(X_DIR_PIN,!INVERT_X_DIR); - - if ((out_bits & (1<step_event_count; - } - } - else // +direction - WRITE(Y_DIR_PIN,!INVERT_Y_DIR); - - if ((out_bits & (1<step_event_count; - } - } - else // +direction - WRITE(Z_DIR_PIN,!INVERT_Z_DIR); - -#ifndef ADVANCE - if ((out_bits & (1<steps_x; - if (counter_x > 0) { - WRITE(X_STEP_PIN, HIGH); - counter_x -= current_block->step_event_count; - WRITE(X_STEP_PIN, LOW); - } - - counter_y += current_block->steps_y; - if (counter_y > 0) { - WRITE(Y_STEP_PIN, HIGH); - counter_y -= current_block->step_event_count; - WRITE(Y_STEP_PIN, LOW); - } - - counter_z += current_block->steps_z; - if (counter_z > 0) { - WRITE(Z_STEP_PIN, HIGH); - counter_z -= current_block->step_event_count; - WRITE(Z_STEP_PIN, LOW); - } - -#ifndef ADVANCE - counter_e += current_block->steps_e; - if (counter_e > 0) { - WRITE(E_STEP_PIN, HIGH); - counter_e -= current_block->step_event_count; - WRITE(E_STEP_PIN, LOW); - } -#endif //!ADVANCE - - // Calculare new timer value - unsigned short timer; - unsigned short step_rate; - if (step_events_completed < accelerate_until) { - MultiU24X24toH16(acc_step_rate, acceleration_time, acceleration_rate); - acc_step_rate += initial_rate; - - // upper limit - if(acc_step_rate > current_block->nominal_rate) - acc_step_rate = current_block->nominal_rate; - - // step_rate to timer interval - timer = calc_timer(acc_step_rate); - advance += advance_rate; - acceleration_time += timer; - OCR1A = timer; - } - else if (step_events_completed > decelerate_after) { - MultiU24X24toH16(step_rate, deceleration_time, acceleration_rate); - - if(step_rate > acc_step_rate) { // Check step_rate stays positive - step_rate = final_rate; - } - else { - step_rate = acc_step_rate - step_rate; // Decelerate from aceleration end point. - } - - // lower limit - if(step_rate < final_rate) - step_rate = final_rate; - - // step_rate to timer interval - timer = calc_timer(step_rate); -#ifdef ADVANCE - advance -= advance_rate; - if(advance < final_advance) - advance = final_advance; -#endif //ADVANCE - deceleration_time += timer; - OCR1A = timer; - } - // If current block is finished, reset pointer - step_events_completed += 1; - if (step_events_completed >= current_block->step_event_count) { - current_block = NULL; - plan_discard_current_block(); - } - } - busy=false; -} - -#ifdef ADVANCE - -unsigned char old_OCR0A; -// Timer interrupt for E. e_steps is set in the main routine; -// Timer 0 is shared with millies -ISR(TIMER0_COMPA_vect) -{ - // Critical section needed because Timer 1 interrupt has higher priority. - // The pin set functions are placed on trategic position to comply with the stepper driver timing. - WRITE(E_STEP_PIN, LOW); - // e_steps is changed in timer 1 interrupt - CRITICAL_SECTION_START; - // Set E direction (Depends on E direction + advance) - if (e_steps < 0) { - WRITE(E_DIR_PIN,INVERT_E_DIR); - e_steps++; - WRITE(E_STEP_PIN, HIGH); - } - if (e_steps > 0) { - WRITE(E_DIR_PIN,!INVERT_E_DIR); - e_steps--; - WRITE(E_STEP_PIN, HIGH); - } - CRITICAL_SECTION_END; - old_OCR0A += 25; // 10kHz interrupt - OCR0A = old_OCR0A; -} -#endif // ADVANCE - -void st_init() -{ - // waveform generation = 0100 = CTC - TCCR1B &= ~(1<= 16) - { - current_raw = 16383 - raw_temp_value; - temp_meas_ready = true; - temp_count = 0; - raw_temp_value = 0; -#ifdef MAXTEMP - if(current_raw >= maxttemp) { - target_raw = 0; -#ifdef PIDTEMP - OCR2B = 0; -#else - WRITE(HEATER_0_PIN,LOW); -#endif - } -#endif -#ifdef MINTEMP - if(current_raw <= minttemp) { - target_raw = 0; -#ifdef PIDTEMP - OCR2B = 0; -#else - WRITE(HEATER_0_PIN,LOW); -#endif - } -#endif -#ifndef PIDTEMP - if(current_raw >= target_raw) - { - WRITE(HEATER_0_PIN,LOW); - } - else - { - WRITE(HEATER_0_PIN,HIGH); - } -#endif - } -} - - -#include - -int main(void) -{ - init(); - - setup(); - - for (;;) - loop(); - - return 0; -} -