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Support dual x-carriage printers

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Dual x-carriage designs offer some substantial improvements for dual
extruder printing.
This commit is contained in:
Robert F-C
2013-07-17 22:44:45 +10:00
parent 5ab872de1f
commit d7390e13d9
5 changed files with 242 additions and 25 deletions
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88
Marlin/stepper.cpp
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@ -348,11 +348,21 @@ ISR(TIMER1_COMPA_vect)
// Set the direction bits (X_AXIS=A_AXIS and Y_AXIS=B_AXIS for COREXY)
if((out_bits & (1<<X_AXIS))!=0){
WRITE(X_DIR_PIN, INVERT_X_DIR);
#ifdef DUAL_X_CARRIAGE
if (active_extruder != 0)
WRITE(X2_DIR_PIN,INVERT_X_DIR);
else
#endif
WRITE(X_DIR_PIN, INVERT_X_DIR);
count_direction[X_AXIS]=-1;
}
else{
WRITE(X_DIR_PIN, !INVERT_X_DIR);
#ifdef DUAL_X_CARRIAGE
if (active_extruder != 0)
WRITE(X2_DIR_PIN,!INVERT_X_DIR);
else
#endif
WRITE(X_DIR_PIN, !INVERT_X_DIR);
count_direction[X_AXIS]=1;
}
if((out_bits & (1<<Y_AXIS))!=0){
@ -372,29 +382,41 @@ ISR(TIMER1_COMPA_vect)
#endif
CHECK_ENDSTOPS
{
#if defined(X_MIN_PIN) && X_MIN_PIN > -1
bool x_min_endstop=(READ(X_MIN_PIN) != X_ENDSTOPS_INVERTING);
if(x_min_endstop && old_x_min_endstop && (current_block->steps_x > 0)) {
endstops_trigsteps[X_AXIS] = count_position[X_AXIS];
endstop_x_hit=true;
step_events_completed = current_block->step_event_count;
}
old_x_min_endstop = x_min_endstop;
#endif
#ifdef DUAL_X_CARRIAGE
// with 2 x-carriages, endstops are only checked in the homing direction for the active extruder
if ((active_extruder == 0 && X_HOME_DIR == -1) || (active_extruder != 0 && X2_HOME_DIR == -1))
#endif
{
#if defined(X_MIN_PIN) && X_MIN_PIN > -1
bool x_min_endstop=(READ(X_MIN_PIN) != X_ENDSTOPS_INVERTING);
if(x_min_endstop && old_x_min_endstop && (current_block->steps_x > 0)) {
endstops_trigsteps[X_AXIS] = count_position[X_AXIS];
endstop_x_hit=true;
step_events_completed = current_block->step_event_count;
}
old_x_min_endstop = x_min_endstop;
#endif
}
}
}
else { // +direction
CHECK_ENDSTOPS
{
#if defined(X_MAX_PIN) && X_MAX_PIN > -1
bool x_max_endstop=(READ(X_MAX_PIN) != X_ENDSTOPS_INVERTING);
if(x_max_endstop && old_x_max_endstop && (current_block->steps_x > 0)){
endstops_trigsteps[X_AXIS] = count_position[X_AXIS];
endstop_x_hit=true;
step_events_completed = current_block->step_event_count;
}
old_x_max_endstop = x_max_endstop;
#endif
#ifdef DUAL_X_CARRIAGE
// with 2 x-carriages, endstops are only checked in the homing direction for the active extruder
if ((active_extruder == 0 && X_HOME_DIR == 1) || (active_extruder != 0 && X2_HOME_DIR == 1))
#endif
{
#if defined(X_MAX_PIN) && X_MAX_PIN > -1
bool x_max_endstop=(READ(X_MAX_PIN) != X_ENDSTOPS_INVERTING);
if(x_max_endstop && old_x_max_endstop && (current_block->steps_x > 0)){
endstops_trigsteps[X_AXIS] = count_position[X_AXIS];
endstop_x_hit=true;
step_events_completed = current_block->step_event_count;
}
old_x_max_endstop = x_max_endstop;
#endif
}
}
}
@ -507,10 +529,20 @@ ISR(TIMER1_COMPA_vect)
counter_x += current_block->steps_x;
if (counter_x > 0) {
WRITE(X_STEP_PIN, !INVERT_X_STEP_PIN);
#ifdef DUAL_X_CARRIAGE
if (active_extruder != 0)
WRITE(X2_STEP_PIN,!INVERT_X_STEP_PIN);
else
#endif
WRITE(X_STEP_PIN, !INVERT_X_STEP_PIN);
counter_x -= current_block->step_event_count;
count_position[X_AXIS]+=count_direction[X_AXIS];
WRITE(X_STEP_PIN, INVERT_X_STEP_PIN);
#ifdef DUAL_X_CARRIAGE
if (active_extruder != 0)
WRITE(X2_STEP_PIN,INVERT_X_STEP_PIN);
else
#endif
WRITE(X_STEP_PIN, INVERT_X_STEP_PIN);
}
counter_y += current_block->steps_y;
@ -685,6 +717,9 @@ void st_init()
#if defined(X_DIR_PIN) && X_DIR_PIN > -1
SET_OUTPUT(X_DIR_PIN);
#endif
#if defined(X2_DIR_PIN) && X2_DIR_PIN > -1
SET_OUTPUT(X2_DIR_PIN);
#endif
#if defined(Y_DIR_PIN) && Y_DIR_PIN > -1
SET_OUTPUT(Y_DIR_PIN);
#endif
@ -711,6 +746,10 @@ void st_init()
SET_OUTPUT(X_ENABLE_PIN);
if(!X_ENABLE_ON) WRITE(X_ENABLE_PIN,HIGH);
#endif
#if defined(X2_ENABLE_PIN) && X2_ENABLE_PIN > -1
SET_OUTPUT(X2_ENABLE_PIN);
if(!X_ENABLE_ON) WRITE(X2_ENABLE_PIN,HIGH);
#endif
#if defined(Y_ENABLE_PIN) && Y_ENABLE_PIN > -1
SET_OUTPUT(Y_ENABLE_PIN);
if(!Y_ENABLE_ON) WRITE(Y_ENABLE_PIN,HIGH);
@ -788,6 +827,11 @@ void st_init()
WRITE(X_STEP_PIN,INVERT_X_STEP_PIN);
disable_x();
#endif
#if defined(X2_STEP_PIN) && (X2_STEP_PIN > -1)
SET_OUTPUT(X2_STEP_PIN);
WRITE(X2_STEP_PIN,INVERT_X_STEP_PIN);
disable_x();
#endif
#if defined(Y_STEP_PIN) && (Y_STEP_PIN > -1)
SET_OUTPUT(Y_STEP_PIN);
WRITE(Y_STEP_PIN,INVERT_Y_STEP_PIN);