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Merge pull request #774 from MissionSt/cleanup/probe_pt

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Refactor of z probing for auto bed leveling
This commit is contained in:
nothinman 2014-02-17 01:08:58 +00:00
commit a466c8ef68
1 changed files with 29 additions and 62 deletions
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91
Marlin/Marlin_main.cpp
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@ -978,6 +978,27 @@ static void retract_z_probe() {
#endif #endif
} }
/// Probe bed height at position (x,y), returns the measured z value
static float probe_pt(float x, float y, float z_before) {
// move to right place
do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], z_before);
do_blocking_move_to(x - X_PROBE_OFFSET_FROM_EXTRUDER, y - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
engage_z_probe(); // Engage Z Servo endstop if available
run_z_probe();
float measured_z = current_position[Z_AXIS];
retract_z_probe();
SERIAL_PROTOCOLPGM("Bed x: ");
SERIAL_PROTOCOL(x);
SERIAL_PROTOCOLPGM(" y: ");
SERIAL_PROTOCOL(y);
SERIAL_PROTOCOLPGM(" z: ");
SERIAL_PROTOCOL(measured_z);
SERIAL_PROTOCOLPGM("\n");
return measured_z;
}
#endif // #ifdef ENABLE_AUTO_BED_LEVELING #endif // #ifdef ENABLE_AUTO_BED_LEVELING
static void homeaxis(int axis) { static void homeaxis(int axis) {
@ -1415,31 +1436,20 @@ void process_commands()
for (int xCount=0; xCount < ACCURATE_BED_LEVELING_POINTS; xCount++) for (int xCount=0; xCount < ACCURATE_BED_LEVELING_POINTS; xCount++)
{ {
float z_before;
if (probePointCounter == 0) if (probePointCounter == 0)
{ {
// raise before probing // raise before probing
do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], Z_RAISE_BEFORE_PROBING); z_before = Z_RAISE_BEFORE_PROBING;
} else } else
{ {
// raise extruder // raise extruder
do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS); z_before = current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS;
} }
float measured_z = probe_pt(xProbe, yProbe, z_before);
do_blocking_move_to(xProbe - X_PROBE_OFFSET_FROM_EXTRUDER, yProbe - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]); eqnBVector[probePointCounter] = measured_z;
engage_z_probe(); // Engage Z Servo endstop if available
run_z_probe();
eqnBVector[probePointCounter] = current_position[Z_AXIS];
retract_z_probe();
SERIAL_PROTOCOLPGM("Bed x: ");
SERIAL_PROTOCOL(xProbe);
SERIAL_PROTOCOLPGM(" y: ");
SERIAL_PROTOCOL(yProbe);
SERIAL_PROTOCOLPGM(" z: ");
SERIAL_PROTOCOL(current_position[Z_AXIS]);
SERIAL_PROTOCOLPGM("\n");
eqnAMatrix[probePointCounter + 0*ACCURATE_BED_LEVELING_POINTS*ACCURATE_BED_LEVELING_POINTS] = xProbe; eqnAMatrix[probePointCounter + 0*ACCURATE_BED_LEVELING_POINTS*ACCURATE_BED_LEVELING_POINTS] = xProbe;
eqnAMatrix[probePointCounter + 1*ACCURATE_BED_LEVELING_POINTS*ACCURATE_BED_LEVELING_POINTS] = yProbe; eqnAMatrix[probePointCounter + 1*ACCURATE_BED_LEVELING_POINTS*ACCURATE_BED_LEVELING_POINTS] = yProbe;
@ -1469,56 +1479,13 @@ void process_commands()
// prob 1 // prob 1
do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], Z_RAISE_BEFORE_PROBING); float z_at_xLeft_yBack = probe_pt(LEFT_PROBE_BED_POSITION, BACK_PROBE_BED_POSITION, Z_RAISE_BEFORE_PROBING);
do_blocking_move_to(LEFT_PROBE_BED_POSITION - X_PROBE_OFFSET_FROM_EXTRUDER, BACK_PROBE_BED_POSITION - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
engage_z_probe(); // Engage Z Servo endstop if available
run_z_probe();
float z_at_xLeft_yBack = current_position[Z_AXIS];
retract_z_probe();
SERIAL_PROTOCOLPGM("Bed x: ");
SERIAL_PROTOCOL(LEFT_PROBE_BED_POSITION);
SERIAL_PROTOCOLPGM(" y: ");
SERIAL_PROTOCOL(BACK_PROBE_BED_POSITION);
SERIAL_PROTOCOLPGM(" z: ");
SERIAL_PROTOCOL(current_position[Z_AXIS]);
SERIAL_PROTOCOLPGM("\n");
// prob 2 // prob 2
do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS); float z_at_xLeft_yFront = probe_pt(LEFT_PROBE_BED_POSITION, FRONT_PROBE_BED_POSITION, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
do_blocking_move_to(LEFT_PROBE_BED_POSITION - X_PROBE_OFFSET_FROM_EXTRUDER, FRONT_PROBE_BED_POSITION - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
engage_z_probe(); // Engage Z Servo endstop if available
run_z_probe();
float z_at_xLeft_yFront = current_position[Z_AXIS];
retract_z_probe();
SERIAL_PROTOCOLPGM("Bed x: ");
SERIAL_PROTOCOL(LEFT_PROBE_BED_POSITION);
SERIAL_PROTOCOLPGM(" y: ");
SERIAL_PROTOCOL(FRONT_PROBE_BED_POSITION);
SERIAL_PROTOCOLPGM(" z: ");
SERIAL_PROTOCOL(current_position[Z_AXIS]);
SERIAL_PROTOCOLPGM("\n");
// prob 3 // prob 3
do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS); float z_at_xRight_yFront = probe_pt(RIGHT_PROBE_BED_POSITION, FRONT_PROBE_BED_POSITION, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
// the current position will be updated by the blocking move so the head will not lower on this next call.
do_blocking_move_to(RIGHT_PROBE_BED_POSITION - X_PROBE_OFFSET_FROM_EXTRUDER, FRONT_PROBE_BED_POSITION - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
engage_z_probe(); // Engage Z Servo endstop if available
run_z_probe();
float z_at_xRight_yFront = current_position[Z_AXIS];
retract_z_probe(); // Retract Z Servo endstop if available
SERIAL_PROTOCOLPGM("Bed x: ");
SERIAL_PROTOCOL(RIGHT_PROBE_BED_POSITION);
SERIAL_PROTOCOLPGM(" y: ");
SERIAL_PROTOCOL(FRONT_PROBE_BED_POSITION);
SERIAL_PROTOCOLPGM(" z: ");
SERIAL_PROTOCOL(current_position[Z_AXIS]);
SERIAL_PROTOCOLPGM("\n");
clean_up_after_endstop_move(); clean_up_after_endstop_move();