prusa3d · 3d-gussner · Nov 22, 2023 · Oct 22, 2023 · Nov 12, 2023 · Nov 19, 2023
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -225,6 +225,7 @@ set(FW_SOURCES
     spi.c
     SpoolJoin.cpp
     stepper.cpp
+    stopwatch.cpp
     strtod.c
     swi2c.c
     Tcodes.cpp

diff --git a/Firmware/Marlin.h b/Firmware/Marlin.h
@@ -262,18 +262,13 @@ extern float retract_length_swap;
 extern float retract_recover_length_swap;
 #endif
 
-extern uint32_t starttime; // milliseconds
-extern uint32_t pause_time; // milliseconds
-extern uint32_t start_pause_print; // milliseconds
 extern ShortTimer usb_timer;
 extern bool processing_tcode;
 extern bool homing_flag;
 extern uint32_t total_filament_used; // mm/100 or 10um
 
 /// @brief Save print statistics to EEPROM
-/// @param _total_filament_used has unit mm/100 or 10um
-/// @param _total_print_time has unit minutes, for example 123 minutes
-void save_statistics(uint32_t _total_filament_used, uint32_t _total_print_time);
+void save_statistics();
 
 extern int fan_edge_counter[2];
 extern int fan_speed[2];

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
@@ -89,6 +89,7 @@
 #include "Tcodes.h"
 #include "Dcodes.h"
 #include "SpoolJoin.h"
+#include "stopwatch.h"
 
 #ifndef LA_NOCOMPAT
 #include "la10compat.h"
@@ -174,7 +175,7 @@ static LongTimer crashDetTimer;
 
 bool mesh_bed_leveling_flag = false;
 
-uint32_t total_filament_used;
+uint32_t total_filament_used; // unit mm/100 or 10um
 HeatingStatus heating_status;
 int fan_edge_counter[2];
 int fan_speed[2];
@@ -289,9 +290,6 @@ static uint32_t max_inactive_time = 0;
 static uint32_t stepper_inactive_time = DEFAULT_STEPPER_DEACTIVE_TIME*1000l;
 static uint32_t safetytimer_inactive_time = DEFAULT_SAFETYTIMER_TIME_MINS*60*1000ul;
 
-uint32_t starttime;
-uint32_t pause_time;
-uint32_t start_pause_print;
 ShortTimer usb_timer;
 
 bool Stopped=false;
@@ -509,12 +507,12 @@ void servo_init()
 }
 
 bool __attribute__((noinline)) printJobOngoing() {
-    return (IS_SD_PRINTING || usb_timer.running());
+    return (IS_SD_PRINTING || usb_timer.running() || print_job_timer.isRunning());
 }
 
 bool __attribute__((noinline)) printer_active() {
     return printJobOngoing()
-        || isPrintPaused
+        || print_job_timer.isPaused()
         || saved_printing
         || (lcd_commands_type != LcdCommands::Idle)
         || MMU2::mmu2.MMU_PRINT_SAVED()
@@ -535,7 +533,7 @@ bool check_fsensor() {
 bool __attribute__((noinline)) babystep_allowed() {
     return ( !homing_flag
         && !mesh_bed_leveling_flag
-        && !isPrintPaused
+        && !print_job_timer.isPaused()
         && ((lcd_commands_type == LcdCommands::Layer1Cal && CHECK_ALL_HEATERS)
             || printJobOngoing()
             || lcd_commands_type == LcdCommands::Idle
@@ -633,7 +631,7 @@ void crashdet_detected(uint8_t mask)
 
 void crashdet_recover()
 {
-  if (!isPrintPaused) crashdet_restore_print_and_continue();
+  if (!print_job_timer.isPaused()) crashdet_restore_print_and_continue();
   if (lcd_crash_detect_enabled()) tmc2130_sg_stop_on_crash = true;
 }
 
@@ -1731,7 +1729,7 @@ void loop()
         KEEPALIVE_STATE(NOT_BUSY);
     }
 
-	if (isPrintPaused && saved_printing_type == PowerPanic::PRINT_TYPE_USB) { //keep believing that usb is being printed. Prevents accessing dangerous menus while pausing.
+	if (print_job_timer.isPaused() && saved_printing_type == PowerPanic::PRINT_TYPE_USB) { //keep believing that usb is being printed. Prevents accessing dangerous menus while pausing.
 		usb_timer.start();
 	}
 	else if (usb_timer.expired(10000)) { //just need to check if it expired. Nothing else is needed to be done.
@@ -1828,7 +1826,7 @@ void loop()
 }
   //check heater every n milliseconds
   manage_heater();
-  manage_inactivity(isPrintPaused);
+  manage_inactivity(print_job_timer.isPaused());
   checkHitEndstops();
   lcd_update(0);
 #ifdef TMC2130
@@ -3425,7 +3423,7 @@ static void gcode_M600(const bool automatic, const float x_position, const float
     fanSpeed = 0;
 
     // Retract E
-    if (!isPrintPaused)
+    if (!print_job_timer.isPaused())
     {
       current_position[E_AXIS] += e_shift;
       plan_buffer_line_curposXYZE(FILAMENTCHANGE_RFEED);
@@ -3488,7 +3486,7 @@ static void gcode_M600(const bool automatic, const float x_position, const float
 
         // Feed a little of filament to stabilize pressure
         if (!automatic) {
-            if (isPrintPaused)
+            if (print_job_timer.isPaused())
             {
                 // Return to retracted state during a pause
                 // @todo is retraction really needed? E-position is reverted a few lines below
@@ -3524,7 +3522,7 @@ static void gcode_M600(const bool automatic, const float x_position, const float
         feedmultiply = feedmultiplyBckp;
         enquecommandf_P(MSG_M220, feedmultiplyBckp);
     }
-    if (isPrintPaused) lcd_setstatuspgm(_T(MSG_PRINT_PAUSED));
+    if (print_job_timer.isPaused()) lcd_setstatuspgm(_T(MSG_PRINT_PAUSED));
     else lcd_setstatuspgm(MSG_WELCOME);
     custom_message_type = CustomMsg::Status;
 }
@@ -5256,7 +5254,7 @@ void process_commands()
 	### M24 - Start SD print <a href="https://reprap.org/wiki/G-code#M24:_Start.2Fresume_SD_print">M24: Start/resume SD print</a>
     */
     case 24:
-    if (isPrintPaused)
+    if (print_job_timer.isPaused())
       lcd_resume_print();
     else
     {
@@ -5271,7 +5269,7 @@ void process_commands()
       }
 
       card.startFileprint();
-      starttime=_millis();
+      print_job_timer.start();
       if (MMU2::mmu2.Enabled())
       {
         if (MMU2::mmu2.FindaDetectsFilament() && !fsensor.getFilamentPresent())
@@ -5389,7 +5387,7 @@ void process_commands()
                 la10c_reset();
 #endif
             }
-            starttime=_millis(); // procedure calls count as normal print time.
+            print_job_timer.start(); // procedure calls count as normal print time.
         }
       }
     } break;
@@ -5413,7 +5411,7 @@ void process_commands()
     case 31: //M31 take time since the start of the SD print or an M109 command
       {
       char time[30];
-      uint32_t t = (_millis() - starttime) / 1000;
+      uint32_t t = print_job_timer.duration();
       int16_t sec, min;
       min = t / 60;
       sec = t % 60;
@@ -5875,6 +5873,48 @@ SERIAL_PROTOCOLPGM("\n\n");
         break;
     }
 
+    /*!
+    ### M75 - Start the print job timer <a href="https://reprap.org/wiki/G-code#M75:_Start_the_print_job_timer">M75: Start the print job timer</a>
+    */
+    case 75:
+    {
+        print_job_timer.start();
+        break;
+    }
+
+    /*!
+    ### M76 - Pause the print job timer <a href="https://reprap.org/wiki/G-code#M76:_Pause_the_print_job_timer">M76: Pause the print job timer</a>
+    */
+    case 76:
+    {
+        print_job_timer.pause();
+        break;
+    }
+
+    /*!
+    ### M77 - Stop the print job timer <a href="https://reprap.org/wiki/G-code#M77:_Stop_the_print_job_timer">M77: Stop the print job timer</a>
+    */
+    case 77:
+    {
+        print_job_timer.stop();
+        save_statistics();
+        break;
+    }
+
+    /*!
+    ### M78 - Show statistical information about the print jobs <a href="https://reprap.org/wiki/G-code#M78:_Show_statistical_information_about_the_print_jobs">M78: Show statistical information about the print jobs</a>
+    */
+    case 78:
+    {
+        // @todo useful for maintenance notifications
+        SERIAL_ECHOPGM("STATS ");
+        SERIAL_ECHO(eeprom_read_dword((uint32_t *)EEPROM_TOTALTIME));
+        SERIAL_ECHOPGM(" min ");
+        SERIAL_ECHO(eeprom_read_dword((uint32_t *)EEPROM_FILAMENTUSED));
+        SERIAL_ECHOLNPGM(" cm.");
+        break;
+    }
+
     /*!
     ### M79 - Start host timer <a href="https://reprap.org/wiki/G-code#M79:_Start_host_timer">M79: Start host timer</a>
     Start the printer-host enable keep-alive timer. While the timer has not expired, the printer will enable host specific features.
@@ -6050,8 +6090,7 @@ SERIAL_PROTOCOLPGM("\n\n");
         LCD_MESSAGERPGM(_T(MSG_HEATING_COMPLETE));
 		heating_status = HeatingStatus::EXTRUDER_HEATING_COMPLETE;
         prusa_statistics(2);
-
-        //starttime=_millis();
+
         previous_millis_cmd.start();
       }
       break;
@@ -7743,7 +7782,7 @@ SERIAL_PROTOCOLPGM("\n\n");
         SERIAL_ECHOPGM("Z:");
         SERIAL_ECHOLN(pause_position[Z_AXIS]);
 */
-        if (!isPrintPaused) {
+        if (!print_job_timer.isPaused()) {
             st_synchronize();
             ClearToSend(); //send OK even before the command finishes executing because we want to make sure it is not skipped because of cmdqueue_pop_front();
             cmdqueue_pop_front(); //trick because we want skip this command (M601) after restore
@@ -7757,7 +7796,7 @@ SERIAL_PROTOCOLPGM("\n\n");
     */
     case 602:
     {
-        if (isPrintPaused) lcd_resume_print();
+        if (print_job_timer.isPaused()) lcd_resume_print();
     }
     break;
 
@@ -9631,7 +9670,7 @@ void ThermalStop(bool allow_recovery)
 
         // Either pause or stop the print
         if(allow_recovery && printJobOngoing()) {
-            if (!isPrintPaused) {
+            if (!print_job_timer.isPaused()) {
                 lcd_setalertstatuspgm(_T(MSG_PAUSED_THERMAL_ERROR), LCD_STATUS_CRITICAL);
 
                 // we cannot make a distinction for the host here, the pause must be instantaneous
@@ -9765,13 +9804,15 @@ void setPwmFrequency(uint8_t pin, int val)
 }
 #endif //FAST_PWM_FAN
 
-void save_statistics(uint32_t _total_filament_used, uint32_t _total_print_time) {
+void save_statistics() {
     uint32_t _previous_filament = eeprom_init_default_dword((uint32_t *)EEPROM_FILAMENTUSED, 0); //_previous_filament unit: meter
     uint32_t _previous_time = eeprom_init_default_dword((uint32_t *)EEPROM_TOTALTIME, 0);        //_previous_time unit: min
 
-    eeprom_update_dword((uint32_t *)EEPROM_TOTALTIME, _previous_time + _total_print_time); // EEPROM_TOTALTIME unit: min
-    eeprom_update_dword((uint32_t *)EEPROM_FILAMENTUSED, _previous_filament + (_total_filament_used / 1000));
+    uint32_t time_minutes = print_job_timer.duration() / 60;
+    eeprom_update_dword((uint32_t *)EEPROM_TOTALTIME, _previous_time + time_minutes); // EEPROM_TOTALTIME unit: min
+    eeprom_update_dword((uint32_t *)EEPROM_FILAMENTUSED, _previous_filament + (total_filament_used / 1000));
 
+    print_job_timer.reset();
     total_filament_used = 0;
 
     if (MMU2::mmu2.Enabled()) {
@@ -10460,7 +10501,6 @@ float temp_compensation_pinda_thermistor_offset(float temperature_pinda)
 void long_pause() //long pause print
 {
 	st_synchronize();
-	start_pause_print = _millis();
 
     // Stop heaters
     heating_status = HeatingStatus::NO_HEATING;

diff --git a/Firmware/Prusa_farm.cpp b/Firmware/Prusa_farm.cpp
@@ -8,6 +8,7 @@
 #include "ultralcd.h"
 #include "Filament_sensor.h"
 #include "language.h"
+#include "stopwatch.h"
 
 #ifdef PRUSA_FARM
 uint8_t farm_mode = 0;
@@ -92,8 +93,8 @@ static void prusa_stat_printinfo() {
     SERIAL_ECHOPGM("][FNM:");
     SERIAL_ECHO(card.longFilename[0] ? card.longFilename : card.filename);
     SERIAL_ECHOPGM("][TIM:");
-    if (starttime != 0) {
-        SERIAL_ECHO((_millis() - starttime) / 1000);
+    if (print_job_timer.isRunning()) {
+        SERIAL_ECHO(print_job_timer.duration());
     }
     else {
         SERIAL_ECHO(0);
@@ -237,7 +238,7 @@ void prusa_statistics(uint8_t _message) {
         if (busy_state == PAUSED_FOR_USER) {
             prusa_statistics_case0(15);
         }
-        else if (isPrintPaused) {
+        else if (print_job_timer.isPaused()) {
             prusa_statistics_case0(14);
         }
         else if (IS_SD_PRINTING || (eFilamentAction != FilamentAction::None)) {

diff --git a/Firmware/cardreader.cpp b/Firmware/cardreader.cpp
@@ -8,6 +8,7 @@
 #include "language.h"
 #include "Prusa_farm.h"
 #include "power_panic.h"
+#include "stopwatch.h"
 
 #ifdef SDSUPPORT
 
@@ -556,7 +557,7 @@ uint32_t CardReader::getFileSize()
 
 void CardReader::getStatus(bool arg_P)
 {
-    if (isPrintPaused)
+    if (print_job_timer.isPaused())
     {
         if (saved_printing && (saved_printing_type == PowerPanic::PRINT_TYPE_SD))
             SERIAL_PROTOCOLLNPGM("SD print paused");
@@ -577,7 +578,7 @@ void CardReader::getStatus(bool arg_P)
         SERIAL_PROTOCOL(sdpos);
         SERIAL_PROTOCOL('/');
         SERIAL_PROTOCOLLN(filesize);
-        uint16_t time = ( _millis() - starttime ) / 60000U;
+        uint16_t time = print_job_timer.duration() / 60;
         SERIAL_PROTOCOL((int)(time / 60));
         SERIAL_PROTOCOL(':');
         SERIAL_PROTOCOLLN((int)(time % 60));

diff --git a/Firmware/cmdqueue.cpp b/Firmware/cmdqueue.cpp
@@ -7,6 +7,7 @@
 #include "meatpack.h"
 #include "messages.h"
 #include "language.h"
+#include "stopwatch.h"
 
 // Reserve BUFSIZE lines of length MAX_CMD_SIZE plus CMDBUFFER_RESERVE_FRONT.
 char cmdbuffer[BUFSIZE * (MAX_CMD_SIZE + 1) + CMDBUFFER_RESERVE_FRONT];
@@ -366,7 +367,7 @@ void get_command()
 	}
 
   // start of serial line processing loop
-  while (((MYSERIAL.available() > 0 && !saved_printing) || (MYSERIAL.available() > 0 && isPrintPaused)) && !cmdqueue_serial_disabled) {  //is print is saved (crash detection or filament detection), dont process data from serial line
+  while (((MYSERIAL.available() > 0 && !saved_printing) || (MYSERIAL.available() > 0 && print_job_timer.isPaused())) && !cmdqueue_serial_disabled) {  //is print is saved (crash detection or filament detection), dont process data from serial line
 
 #ifdef ENABLE_MEATPACK
     // MeatPack Changes
@@ -658,12 +659,11 @@ void get_command()
 
           SERIAL_PROTOCOLLNRPGM(_n("Done printing file"));////MSG_FILE_PRINTED
           char time[30];
-          uint32_t t = (_millis() - starttime - pause_time) / 60000;
-          pause_time = 0;
+          uint32_t t = print_job_timer.duration() / 60;
           int hours, minutes;
           minutes = t % 60;
           hours = t / 60;
-          save_statistics(total_filament_used, t);
+          save_statistics();
           sprintf_P(time, PSTR("%i hours %i minutes"),hours, minutes);
           SERIAL_ECHO_START;
           SERIAL_ECHOLN(time);

diff --git a/Firmware/fancheck.cpp b/Firmware/fancheck.cpp
@@ -5,6 +5,7 @@
 #include "messages.h"
 #include "temperature.h"
 #include "stepper.h"
+#include "stopwatch.h"
 
 #define FAN_CHECK_PERIOD 5000 //5s
 #define FAN_CHECK_DURATION 100 //100ms
@@ -93,7 +94,7 @@ void fanSpeedError(unsigned char _fan) {
 
     if (printJobOngoing()) {
         // A print is ongoing, pause the print normally
-        if(!isPrintPaused) {
+        if(!print_job_timer.isPaused()) {
             if (usb_timer.running())
                 lcd_pause_usb_print();
             else