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Fix cold/lengthy extrusion handling

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This commit is contained in:
Scott Lahteine 2017-11-10 01:32:48 -06:00
parent 4714fb8fcb
commit 24b302c001
2 changed files with 32 additions and 23 deletions
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11
Marlin/Marlin_main.cpp
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@ -12947,27 +12947,32 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
*
* This may result in several calls to planner.buffer_line to
* do smaller moves for DELTA, SCARA, mesh moves, etc.
*
* Make sure current_position[E] and destination[E] are good
* before calling or cold/lengthy extrusion may get missed.
*/
void prepare_move_to_destination() {
clamp_to_software_endstops(destination);
refresh_cmd_timeout();
#if ENABLED(PREVENT_COLD_EXTRUSION)
#if ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE)
if (!DEBUGGING(DRYRUN)) {
if (destination[E_AXIS] != current_position[E_AXIS]) {
#if ENABLED(PREVENT_COLD_EXTRUSION)
if (thermalManager.tooColdToExtrude(active_extruder)) {
current_position[E_AXIS] = destination[E_AXIS]; // Behave as if the move really took place, but ignore E part
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
}
#endif // PREVENT_COLD_EXTRUSION
#if ENABLED(PREVENT_LENGTHY_EXTRUDE)
if (fabs(destination[E_AXIS] - current_position[E_AXIS]) > EXTRUDE_MAXLENGTH / volumetric_multiplier[active_extruder]) {
if (FABS(destination[E_AXIS] - current_position[E_AXIS]) > (EXTRUDE_MAXLENGTH) / volumetric_multiplier[active_extruder]) {
current_position[E_AXIS] = destination[E_AXIS]; // Behave as if the move really took place, but ignore E part
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
}
#endif
#endif // PREVENT_LENGTHY_EXTRUDE
}
}

14
Marlin/planner.cpp
View File

@ -719,12 +719,15 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
long de = target[E_AXIS] - position[E_AXIS];
const float e_factor = volumetric_multiplier[extruder] * flow_percentage[extruder] * 0.01;
#if ENABLED(LIN_ADVANCE)
float de_float = e - position_float[E_AXIS];
#endif
#if ENABLED(PREVENT_COLD_EXTRUSION)
#if ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE)
if (de) {
#if ENABLED(PREVENT_COLD_EXTRUSION)
if (thermalManager.tooColdToExtrude(extruder)) {
position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
de = 0; // no difference
@ -735,8 +738,9 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
}
#endif // PREVENT_COLD_EXTRUSION
#if ENABLED(PREVENT_LENGTHY_EXTRUDE)
int32_t de_mm = labs(de * volumetric_multiplier[active_extruder]);
const int32_t de_mm = labs(de * e_factor);
if (de_mm > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
de = 0; // no difference
@ -747,9 +751,9 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
SERIAL_ECHO_START();
SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
}
#endif
#endif // PREVENT_LENGTHY_EXTRUDE
}
#endif
#endif // PREVENT_COLD_EXTRUSION || PREVENT_LENGTHY_EXTRUDE
// Compute direction bit-mask for this block
uint8_t dm = 0;
@ -778,7 +782,7 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
#endif
if (de < 0) SBI(dm, E_AXIS);
const float esteps_float = de * volumetric_multiplier[extruder] * flow_percentage[extruder] * 0.01;
const float esteps_float = de * e_factor;
const int32_t esteps = abs(esteps_float) + 0.5;
// Calculate the buffer head after we push this byte