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Add Z_PROBE_LOW_POINT to prevent damage

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2.0.x
Scott Lahteine 7 years ago
parent 82dafbba33
commit 8b8ad14178
6 changed files with 38 additions and 9 deletions
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2
Marlin/Configuration.h
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@ -777,6 +777,8 @@
#define Z_CLEARANCE_BETWEEN_PROBES 5 // Z Clearance between probe points
//#define Z_AFTER_PROBING 5 // Z position after probing is done
#define Z_PROBE_LOW_POINT -2 // Farthest distance below the trigger-point to go before stopping
// For M851 give a range for adjusting the Z probe offset
#define Z_PROBE_OFFSET_RANGE_MIN -20
#define Z_PROBE_OFFSET_RANGE_MAX 20

2
Marlin/src/config/default/Configuration.h
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@ -777,6 +777,8 @@
#define Z_CLEARANCE_BETWEEN_PROBES 5 // Z Clearance between probe points
//#define Z_AFTER_PROBING 5 // Z position after probing is done
#define Z_PROBE_LOW_POINT -2 // Farthest distance below the trigger-point to go before stopping
// For M851 give a range for adjusting the Z probe offset
#define Z_PROBE_OFFSET_RANGE_MIN -20
#define Z_PROBE_OFFSET_RANGE_MAX 20

2
Marlin/src/gcode/calibrate/G33.cpp
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@ -137,7 +137,7 @@ static void G33_cleanup(
inline float calibration_probe(const float nx, const float ny, const bool stow) {
#if HAS_BED_PROBE
return probe_pt(nx, ny, stow ? PROBE_PT_STOW : PROBE_PT_RAISE, 0, false);
return probe_pt(nx, ny, stow ? PROBE_PT_STOW : PROBE_PT_RAISE, 0, true);
#else
UNUSED(stow);
return lcd_probe_pt(nx, ny);

4
Marlin/src/inc/SanityCheck.h
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@ -780,6 +780,10 @@ static_assert(X_MAX_LENGTH >= X_BED_SIZE && Y_MAX_LENGTH >= Y_BED_SIZE,
#error "MULTIPLE_PROBING must be >= 2."
#endif
#if Z_PROBE_LOW_POINT > 0
#error "Z_PROBE_LOW_POINT must be less than or equal to 0."
#endif
#else
/**

35
Marlin/src/module/probe.cpp
Unescape Escape View File

@ -539,17 +539,34 @@ static bool do_probe_move(const float z, const float fr_mm_m) {
*
* @return The raw Z position where the probe was triggered
*/
static float run_z_probe() {
#define HAS_CALIBRATION_PROBE (ENABLED(DELTA_AUTO_CALIBRATION) && Z_PROBE_LOW_POINT < 0)
static float run_z_probe(
#if HAS_CALIBRATION_PROBE
const bool is_calibration
#endif
) {
#if ENABLED(DEBUG_LEVELING_FEATURE)
if (DEBUGGING(LEVELING)) DEBUG_POS(">>> run_z_probe", current_position);
#endif
#if Z_PROBE_LOW_POINT < 0
// Stop the probe before it goes too low to prevent damage.
// If Z isn't known or this is a "calibration probe" then probe to -10mm.
#if !HAS_CALIBRATION_PROBE
constexpr bool is_calibration = false;
#endif
const float z_probe_low_point = !is_calibration && axis_known_position[Z_AXIS] ? -zprobe_zoffset + Z_PROBE_LOW_POINT : -10.0;
#else
// Assertively move down in all cases
constexpr float z_probe_low_point = -10.0;
#endif
// Double-probing does a fast probe followed by a slow probe
#if MULTIPLE_PROBING == 2
// Do a first probe at the fast speed
if (do_probe_move(-10, Z_PROBE_SPEED_FAST)) return NAN;
if (do_probe_move(z_probe_low_point, Z_PROBE_SPEED_FAST)) return NAN;
float first_probe_z = current_position[Z_AXIS];
@ -580,7 +597,7 @@ static float run_z_probe() {
#endif
// Move down slowly to find bed, not too far
if (do_probe_move(-10, Z_PROBE_SPEED_SLOW)) return NAN;
if (do_probe_move(z_probe_low_point, Z_PROBE_SPEED_SLOW)) return NAN;
#if MULTIPLE_PROBING > 2
probes_total += current_position[Z_AXIS];
@ -628,14 +645,14 @@ static float run_z_probe() {
* - Raise to the BETWEEN height
* - Return the probed Z position
*/
float probe_pt(const float &rx, const float &ry, const ProbePtRaise raise_after/*=PROBE_PT_NONE*/, const uint8_t verbose_level/*=0*/, const bool probe_relative/*=true*/) {
float probe_pt(const float &rx, const float &ry, const ProbePtRaise raise_after/*=PROBE_PT_NONE*/, const uint8_t verbose_level/*=0*/, const bool is_calibration/*=false*/) {
#if ENABLED(DEBUG_LEVELING_FEATURE)
if (DEBUGGING(LEVELING)) {
SERIAL_ECHOPAIR(">>> probe_pt(", LOGICAL_X_POSITION(rx));
SERIAL_ECHOPAIR(", ", LOGICAL_Y_POSITION(ry));
SERIAL_ECHOPAIR(", ", raise_after == PROBE_PT_RAISE ? "raise" : raise_after == PROBE_PT_STOW ? "stow" : "none");
SERIAL_ECHOPAIR(", ", int(verbose_level));
SERIAL_ECHOPAIR(", ", probe_relative ? "probe" : "nozzle");
SERIAL_ECHOPAIR(", ", is_calibration ? "nozzle" : "probe");
SERIAL_ECHOLNPGM("_relative)");
DEBUG_POS("", current_position);
}
@ -643,7 +660,7 @@ float probe_pt(const float &rx, const float &ry, const ProbePtRaise raise_after/
// TODO: Adapt for SCARA, where the offset rotates
float nx = rx, ny = ry;
if (probe_relative) {
if (!is_calibration) {
if (!position_is_reachable_by_probe(rx, ry)) return NAN; // The given position is in terms of the probe
nx -= (X_PROBE_OFFSET_FROM_EXTRUDER); // Get the nozzle position
ny -= (Y_PROBE_OFFSET_FROM_EXTRUDER);
@ -667,7 +684,11 @@ float probe_pt(const float &rx, const float &ry, const ProbePtRaise raise_after/
float measured_z = NAN;
if (!DEPLOY_PROBE()) {
measured_z = run_z_probe() + zprobe_zoffset;
measured_z = run_z_probe(
#if HAS_CALIBRATION_PROBE
is_calibration
#endif
) + zprobe_zoffset;
if (raise_after == PROBE_PT_RAISE)
do_blocking_move_to_z(current_position[Z_AXIS] + Z_CLEARANCE_BETWEEN_PROBES, MMM_TO_MMS(Z_PROBE_SPEED_FAST));

2
Marlin/src/module/probe.h
Unescape Escape View File

@ -40,7 +40,7 @@
PROBE_PT_STOW, // Do a complete stow after run_z_probe
PROBE_PT_RAISE // Raise to "between" clearance after run_z_probe
};
float probe_pt(const float &rx, const float &ry, const ProbePtRaise raise_after=PROBE_PT_NONE, const uint8_t verbose_level=0, const bool probe_relative=true);
float probe_pt(const float &rx, const float &ry, const ProbePtRaise raise_after=PROBE_PT_NONE, const uint8_t verbose_level=0, const bool is_calibration=false);
#define DEPLOY_PROBE() set_probe_deployed(true)
#define STOW_PROBE() set_probe_deployed(false)
#else

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