diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h index 47ad0b732..2b60c3602 100644 --- a/Marlin/Configuration.h +++ b/Marlin/Configuration.h @@ -20,9 +20,6 @@ // if unwanted behavior is observed on a user's machine when running at very slow speeds. #define MINIMUM_PLANNER_SPEED 2.0 // (mm/sec) -// If defined the movements slow down when the look ahead buffer is only half full -#define SLOWDOWN - // BASIC SETTINGS: select your board type, thermistor type, axis scaling, and endstop configuration //// The following define selects which electronics board you have. Please choose the one that matches your setup @@ -248,7 +245,12 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th #define DEFAULT_XYJERK 20.0 // (mm/sec) #define DEFAULT_ZJERK 0.4 // (mm/sec) +// If defined the movements slow down when the look ahead buffer is only half full +#define SLOWDOWN +//default stepper release if idle +#define DEFAULT_STEPPER_DEACTIVE_TIME 60 +#define DEFAULT_STEPPER_DEACTIVE_COMMAND "M84 X Y E" //z stays powered //=========================================================================== @@ -338,6 +340,11 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th #define AUTOTEMP_OLDWEIGHT 0.98 #endif +//this prevents dangerous Extruder moves, i.e. if the temperature is under the limit +//can be software-disabled for whatever purposes by +#define PREVENT_DANGEROUS_EXTRUDE +#define EXTRUDE_MINTEMP 190 +#define EXTRUDE_MAXLENGTH (X_MAX_LENGTH+Y_MAX_LENGTH) //prevent extrusion of very large distances. const int dropsegments=5; //everything with less than this number of steps will be ignored as move and joined with the next movement diff --git a/Marlin/Marlin.pde b/Marlin/Marlin.pde index b3291cb0b..c6251927e 100644 --- a/Marlin/Marlin.pde +++ b/Marlin/Marlin.pde @@ -110,6 +110,7 @@ // M206 - set additional homeing offset // M220 - set speed factor override percentage S:factor in percent // M301 - Set PID parameters P I and D +// M302 - Allow cold extrudes // M400 - Finish all moves // M500 - stores paramters in EEPROM // M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily). @@ -176,7 +177,8 @@ const int sensitive_pins[] = SENSITIVE_PINS; // Sensitive pin list for M42 //Inactivity shutdown variables static unsigned long previous_millis_cmd = 0; static unsigned long max_inactive_time = 0; -static unsigned long stepper_inactive_time = 0; +static unsigned long stepper_inactive_time = DEFAULT_STEPPER_DEACTIVE_TIME*1000; +static unsigned long last_stepperdisabled_time=30*1000; //first release check after 30 seconds static unsigned long starttime=0; static unsigned long stoptime=0; @@ -1057,6 +1059,12 @@ FORCE_INLINE void process_commands() } break; #endif //PIDTEMP + + case 302: // finish all moves + { + allow_cold_extrudes(true); + } + break; case 400: // finish all moves { st_synchronize(); @@ -1188,14 +1196,17 @@ 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(); + if(stepper_inactive_time) + if( (millis()-last_stepperdisabled_time) > stepper_inactive_time ) + { + if(previous_millis_cmd>last_stepperdisabled_time) + last_stepperdisabled_time=previous_millis_cmd; + else + { + enquecommand(DEFAULT_STEPPER_DEACTIVE_COMMAND); + last_stepperdisabled_time=millis(); } + } #ifdef EXTRUDER_RUNOUT_PREVENT if( (millis()-previous_millis_cmd) > EXTRUDER_RUNOUT_SECONDS*1000 ) if(degHotend(active_extruder)>EXTRUDER_RUNOUT_MINTEMP) diff --git a/Marlin/planner.cpp b/Marlin/planner.cpp index a8f41d353..df255443d 100644 --- a/Marlin/planner.cpp +++ b/Marlin/planner.cpp @@ -106,7 +106,9 @@ volatile unsigned char block_buffer_tail; // Index of the block to pro //=========================================================================== //=============================private variables ============================ //=========================================================================== - +#ifdef PREVENT_DANGEROUS_EXTRUDE + bool allow_cold_extrude=false; +#endif #ifdef XY_FREQUENCY_LIMIT // Used for the frequency limit static unsigned char old_direction_bits = 0; // Old direction bits. Used for speed calculations @@ -465,7 +467,23 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa 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]); + target[E_AXIS] = lround(e*axis_steps_per_unit[E_AXIS]); + + #ifdef PREVENT_DANGEROUS_EXTRUDE + if(target[E_AXIS]!=position[E_AXIS]) + if(degHotend(active_extruder)axis_steps_per_unit[E_AXIS]*EXTRUDE_MAXLENGTH) + { + position[E_AXIS]=target[E_AXIS]; //behave as if the move really took place, but ignore E part + SERIAL_ECHO_START; + SERIAL_ECHOLNPGM(" too long extrusion prevented"); + } + #endif // Prepare to set up new block block_t *block = &block_buffer[block_buffer_head]; @@ -786,3 +804,9 @@ uint8_t movesplanned() return (block_buffer_head-block_buffer_tail + BLOCK_BUFFER_SIZE) & (BLOCK_BUFFER_SIZE - 1); } +void allow_cold_extrudes(bool allow) +{ + #ifdef PREVENT_DANGEROUS_EXTRUDE + allow_cold_extrude=allow; + #endif +} \ No newline at end of file diff --git a/Marlin/planner.h b/Marlin/planner.h index b1e028f00..b2d1c6c6c 100644 --- a/Marlin/planner.h +++ b/Marlin/planner.h @@ -140,4 +140,6 @@ FORCE_INLINE bool blocks_queued() else return true; } + +void allow_cold_extrudes(bool allow); #endif