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Firmware2/Marlin/src/module/endstops.cpp
Scott Lahteine 5ebba4b19f More serial strings
2020-02-26 04:11:12 -06:00

1004 lines
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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* endstops.cpp - A singleton object to manage endstops
*/
#include "endstops.h"
#include "stepper.h"
#include "../MarlinCore.h"
#include "../sd/cardreader.h"
#include "temperature.h"
#include "../lcd/ultralcd.h"
#if ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
#include HAL_PATH(../HAL, endstop_interrupts.h)
#endif
#if BOTH(SD_ABORT_ON_ENDSTOP_HIT, SDSUPPORT)
#include "printcounter.h" // for print_job_timer
#endif
#if ENABLED(BLTOUCH)
#include "../feature/bltouch.h"
#endif
#if ENABLED(JOYSTICK)
#include "../feature/joystick.h"
#endif
Endstops endstops;
// private:
bool Endstops::enabled, Endstops::enabled_globally; // Initialized by settings.load()
volatile uint8_t Endstops::hit_state;
Endstops::esbits_t Endstops::live_state = 0;
#if ENDSTOP_NOISE_THRESHOLD
Endstops::esbits_t Endstops::validated_live_state;
uint8_t Endstops::endstop_poll_count;
#endif
#if HAS_BED_PROBE
volatile bool Endstops::z_probe_enabled = false;
#endif
// Initialized by settings.load()
#if ENABLED(X_DUAL_ENDSTOPS)
float Endstops::x2_endstop_adj;
#endif
#if ENABLED(Y_DUAL_ENDSTOPS)
float Endstops::y2_endstop_adj;
#endif
#if ENABLED(Z_MULTI_ENDSTOPS)
float Endstops::z2_endstop_adj;
#if NUM_Z_STEPPER_DRIVERS >= 3
float Endstops::z3_endstop_adj;
#if NUM_Z_STEPPER_DRIVERS >= 4
float Endstops::z4_endstop_adj;
#endif
#endif
#endif
#if ENABLED(SPI_ENDSTOPS)
Endstops::tmc_spi_homing_t Endstops::tmc_spi_homing; // = 0
#endif
#if ENABLED(IMPROVE_HOMING_RELIABILITY)
millis_t sg_guard_period; // = 0
#endif
/**
* Class and Instance Methods
*/
void Endstops::init() {
#if HAS_X_MIN
#if ENABLED(ENDSTOPPULLUP_XMIN)
SET_INPUT_PULLUP(X_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_XMIN)
SET_INPUT_PULLDOWN(X_MIN_PIN);
#else
SET_INPUT(X_MIN_PIN);
#endif
#endif
#if HAS_X2_MIN
#if ENABLED(ENDSTOPPULLUP_XMIN)
SET_INPUT_PULLUP(X2_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_XMIN)
SET_INPUT_PULLDOWN(X2_MIN_PIN);
#else
SET_INPUT(X2_MIN_PIN);
#endif
#endif
#if HAS_Y_MIN
#if ENABLED(ENDSTOPPULLUP_YMIN)
SET_INPUT_PULLUP(Y_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_YMIN)
SET_INPUT_PULLDOWN(Y_MIN_PIN);
#else
SET_INPUT(Y_MIN_PIN);
#endif
#endif
#if HAS_Y2_MIN
#if ENABLED(ENDSTOPPULLUP_YMIN)
SET_INPUT_PULLUP(Y2_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_YMIN)
SET_INPUT_PULLDOWN(Y2_MIN_PIN);
#else
SET_INPUT(Y2_MIN_PIN);
#endif
#endif
#if HAS_Z_MIN
#if ENABLED(ENDSTOPPULLUP_ZMIN)
SET_INPUT_PULLUP(Z_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMIN)
SET_INPUT_PULLDOWN(Z_MIN_PIN);
#else
SET_INPUT(Z_MIN_PIN);
#endif
#endif
#if HAS_Z2_MIN
#if ENABLED(ENDSTOPPULLUP_ZMIN)
SET_INPUT_PULLUP(Z2_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMIN)
SET_INPUT_PULLDOWN(Z2_MIN_PIN);
#else
SET_INPUT(Z2_MIN_PIN);
#endif
#endif
#if HAS_Z3_MIN
#if ENABLED(ENDSTOPPULLUP_ZMIN)
SET_INPUT_PULLUP(Z3_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMIN)
SET_INPUT_PULLDOWN(Z3_MIN_PIN);
#else
SET_INPUT(Z3_MIN_PIN);
#endif
#endif
#if HAS_Z4_MIN
#if ENABLED(ENDSTOPPULLUP_ZMIN)
SET_INPUT_PULLUP(Z4_MIN_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMIN)
SET_INPUT_PULLDOWN(Z4_MIN_PIN);
#else
SET_INPUT(Z4_MIN_PIN);
#endif
#endif
#if HAS_X_MAX
#if ENABLED(ENDSTOPPULLUP_XMAX)
SET_INPUT_PULLUP(X_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_XMAX)
SET_INPUT_PULLDOWN(X_MAX_PIN);
#else
SET_INPUT(X_MAX_PIN);
#endif
#endif
#if HAS_X2_MAX
#if ENABLED(ENDSTOPPULLUP_XMAX)
SET_INPUT_PULLUP(X2_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_XMAX)
SET_INPUT_PULLDOWN(X2_MAX_PIN);
#else
SET_INPUT(X2_MAX_PIN);
#endif
#endif
#if HAS_Y_MAX
#if ENABLED(ENDSTOPPULLUP_YMAX)
SET_INPUT_PULLUP(Y_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_YMAX)
SET_INPUT_PULLDOWN(Y_MAX_PIN);
#else
SET_INPUT(Y_MAX_PIN);
#endif
#endif
#if HAS_Y2_MAX
#if ENABLED(ENDSTOPPULLUP_YMAX)
SET_INPUT_PULLUP(Y2_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_YMAX)
SET_INPUT_PULLDOWN(Y2_MAX_PIN);
#else
SET_INPUT(Y2_MAX_PIN);
#endif
#endif
#if HAS_Z_MAX
#if ENABLED(ENDSTOPPULLUP_ZMAX)
SET_INPUT_PULLUP(Z_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMAX)
SET_INPUT_PULLDOWN(Z_MAX_PIN);
#else
SET_INPUT(Z_MAX_PIN);
#endif
#endif
#if HAS_Z2_MAX
#if ENABLED(ENDSTOPPULLUP_ZMAX)
SET_INPUT_PULLUP(Z2_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMAX)
SET_INPUT_PULLDOWN(Z2_MAX_PIN);
#else
SET_INPUT(Z2_MAX_PIN);
#endif
#endif
#if HAS_Z3_MAX
#if ENABLED(ENDSTOPPULLUP_ZMAX)
SET_INPUT_PULLUP(Z3_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMAX)
SET_INPUT_PULLDOWN(Z3_MAX_PIN);
#else
SET_INPUT(Z3_MAX_PIN);
#endif
#endif
#if HAS_Z4_MAX
#if ENABLED(ENDSTOPPULLUP_ZMAX)
SET_INPUT_PULLUP(Z4_MAX_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMAX)
SET_INPUT_PULLDOWN(Z4_MAX_PIN);
#else
SET_INPUT(Z4_MAX_PIN);
#endif
#endif
#if PIN_EXISTS(CALIBRATION)
#if ENABLED(CALIBRATION_PIN_PULLUP)
SET_INPUT_PULLUP(CALIBRATION_PIN);
#elif ENABLED(CALIBRATION_PIN_PULLDOWN)
SET_INPUT_PULLDOWN(CALIBRATION_PIN);
#else
SET_INPUT(CALIBRATION_PIN);
#endif
#endif
#if HAS_CUSTOM_PROBE_PIN
#if ENABLED(ENDSTOPPULLUP_ZMIN_PROBE)
SET_INPUT_PULLUP(Z_MIN_PROBE_PIN);
#elif ENABLED(ENDSTOPPULLDOWN_ZMIN_PROBE)
SET_INPUT_PULLDOWN(Z_MIN_PROBE_PIN);
#else
SET_INPUT(Z_MIN_PROBE_PIN);
#endif
#endif
#if ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
setup_endstop_interrupts();
#endif
// Enable endstops
enable_globally(
#if ENABLED(ENDSTOPS_ALWAYS_ON_DEFAULT)
true
#else
false
#endif
);
} // Endstops::init
// Called at ~1KHz from Temperature ISR: Poll endstop state if required
void Endstops::poll() {
#if ENABLED(PINS_DEBUGGING)
run_monitor(); // report changes in endstop status
#endif
#if DISABLED(ENDSTOP_INTERRUPTS_FEATURE)
update();
#elif ENDSTOP_NOISE_THRESHOLD
if (endstop_poll_count) update();
#endif
}
void Endstops::enable_globally(const bool onoff) {
enabled_globally = enabled = onoff;
resync();
}
// Enable / disable endstop checking
void Endstops::enable(const bool onoff) {
enabled = onoff;
resync();
}
// Disable / Enable endstops based on ENSTOPS_ONLY_FOR_HOMING and global enable
void Endstops::not_homing() {
enabled = enabled_globally;
}
#if ENABLED(VALIDATE_HOMING_ENDSTOPS)
// If the last move failed to trigger an endstop, call kill
void Endstops::validate_homing_move() {
if (trigger_state()) hit_on_purpose();
else kill(GET_TEXT(MSG_LCD_HOMING_FAILED));
}
#endif
// Enable / disable endstop z-probe checking
#if HAS_BED_PROBE
void Endstops::enable_z_probe(const bool onoff) {
z_probe_enabled = onoff;
resync();
}
#endif
// Get the stable endstop states when enabled
void Endstops::resync() {
if (!abort_enabled()) return; // If endstops/probes are disabled the loop below can hang
#if ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
update();
#else
safe_delay(2); // Wait for Temperature ISR to run at least once (runs at 1KHz)
#endif
#if ENDSTOP_NOISE_THRESHOLD
while (endstop_poll_count) safe_delay(1);
#endif
}
#if ENABLED(PINS_DEBUGGING)
void Endstops::run_monitor() {
if (!monitor_flag) return;
static uint8_t monitor_count = 16; // offset this check from the others
monitor_count += _BV(1); // 15 Hz
monitor_count &= 0x7F;
if (!monitor_count) monitor(); // report changes in endstop status
}
#endif
void Endstops::event_handler() {
static uint8_t prev_hit_state; // = 0
if (hit_state == prev_hit_state) return;
prev_hit_state = hit_state;
if (hit_state) {
#if HAS_SPI_LCD
char chrX = ' ', chrY = ' ', chrZ = ' ', chrP = ' ';
#define _SET_STOP_CHAR(A,C) (chr## A = C)
#else
#define _SET_STOP_CHAR(A,C) ;
#endif
#define _ENDSTOP_HIT_ECHO(A,C) do{ \
SERIAL_ECHOPAIR(" " STRINGIFY(A) ":", planner.triggered_position_mm(_AXIS(A))); \
_SET_STOP_CHAR(A,C); }while(0)
#define _ENDSTOP_HIT_TEST(A,C) \
if (TEST(hit_state, A ##_MIN) || TEST(hit_state, A ##_MAX)) \
_ENDSTOP_HIT_ECHO(A,C)
#define ENDSTOP_HIT_TEST_X() _ENDSTOP_HIT_TEST(X,'X')
#define ENDSTOP_HIT_TEST_Y() _ENDSTOP_HIT_TEST(Y,'Y')
#define ENDSTOP_HIT_TEST_Z() _ENDSTOP_HIT_TEST(Z,'Z')
SERIAL_ECHO_START();
SERIAL_ECHOPGM(STR_ENDSTOPS_HIT);
ENDSTOP_HIT_TEST_X();
ENDSTOP_HIT_TEST_Y();
ENDSTOP_HIT_TEST_Z();
#if HAS_CUSTOM_PROBE_PIN
#define P_AXIS Z_AXIS
if (TEST(hit_state, Z_MIN_PROBE)) _ENDSTOP_HIT_ECHO(P, 'P');
#endif
SERIAL_EOL();
#if HAS_SPI_LCD
ui.status_printf_P(0, PSTR(S_FMT " %c %c %c %c"), GET_TEXT(MSG_LCD_ENDSTOPS), chrX, chrY, chrZ, chrP);
#endif
#if BOTH(SD_ABORT_ON_ENDSTOP_HIT, SDSUPPORT)
if (planner.abort_on_endstop_hit) {
card.endFilePrint();
quickstop_stepper();
thermalManager.disable_all_heaters();
print_job_timer.stop();
}
#endif
}
}
static void print_es_state(const bool is_hit, PGM_P const label=nullptr) {
if (label) serialprintPGM(label);
SERIAL_ECHOPGM(": ");
serialprintPGM(is_hit ? PSTR(STR_ENDSTOP_HIT) : PSTR(STR_ENDSTOP_OPEN));
SERIAL_EOL();
}
void _O2 Endstops::report_states() {
#if ENABLED(BLTOUCH)
bltouch._set_SW_mode();
#endif
SERIAL_ECHOLNPGM(STR_M119_REPORT);
#define ES_REPORT(S) print_es_state(READ(S##_PIN) != S##_ENDSTOP_INVERTING, PSTR(STR_##S))
#if HAS_X_MIN
ES_REPORT(X_MIN);
#endif
#if HAS_X2_MIN
ES_REPORT(X2_MIN);
#endif
#if HAS_X_MAX
ES_REPORT(X_MAX);
#endif
#if HAS_X2_MAX
ES_REPORT(X2_MAX);
#endif
#if HAS_Y_MIN
ES_REPORT(Y_MIN);
#endif
#if HAS_Y2_MIN
ES_REPORT(Y2_MIN);
#endif
#if HAS_Y_MAX
ES_REPORT(Y_MAX);
#endif
#if HAS_Y2_MAX
ES_REPORT(Y2_MAX);
#endif
#if HAS_Z_MIN
ES_REPORT(Z_MIN);
#endif
#if HAS_Z2_MIN
ES_REPORT(Z2_MIN);
#endif
#if HAS_Z3_MIN
ES_REPORT(Z3_MIN);
#endif
#if HAS_Z4_MIN
ES_REPORT(Z4_MIN);
#endif
#if HAS_Z_MAX
ES_REPORT(Z_MAX);
#endif
#if HAS_Z2_MAX
ES_REPORT(Z2_MAX);
#endif
#if HAS_Z3_MAX
ES_REPORT(Z3_MAX);
#endif
#if HAS_Z4_MAX
ES_REPORT(Z4_MAX);
#endif
#if HAS_CUSTOM_PROBE_PIN
print_es_state(READ(Z_MIN_PROBE_PIN) != Z_MIN_PROBE_ENDSTOP_INVERTING, PSTR(STR_Z_PROBE));
#endif
#if HAS_FILAMENT_SENSOR
#if NUM_RUNOUT_SENSORS == 1
print_es_state(READ(FIL_RUNOUT_PIN) != FIL_RUNOUT_INVERTING, PSTR(STR_FILAMENT_RUNOUT_SENSOR));
#else
#define _CASE_RUNOUT(N) case N: pin = FIL_RUNOUT##N##_PIN; break;
for (uint8_t i = 1; i <= NUM_RUNOUT_SENSORS; i++) {
pin_t pin;
switch (i) {
default: continue;
REPEAT_S(1, INCREMENT(NUM_RUNOUT_SENSORS), _CASE_RUNOUT)
}
SERIAL_ECHOPGM(STR_FILAMENT_RUNOUT_SENSOR);
if (i > 1) SERIAL_CHAR(' ', '0' + i);
print_es_state(extDigitalRead(pin) != FIL_RUNOUT_INVERTING);
}
#undef _CASE_RUNOUT
#endif
#endif
#if ENABLED(BLTOUCH)
bltouch._reset_SW_mode();
#endif
#if ENABLED(JOYSTICK_DEBUG)
joystick.report();
#endif
} // Endstops::report_states
// The following routines are called from an ISR context. It could be the temperature ISR, the
// endstop ISR or the Stepper ISR.
#define _ENDSTOP(AXIS, MINMAX) AXIS ##_## MINMAX
#define _ENDSTOP_PIN(AXIS, MINMAX) AXIS ##_## MINMAX ##_PIN
#define _ENDSTOP_INVERTING(AXIS, MINMAX) AXIS ##_## MINMAX ##_ENDSTOP_INVERTING
// Check endstops - Could be called from Temperature ISR!
void Endstops::update() {
#if !ENDSTOP_NOISE_THRESHOLD
if (!abort_enabled()) return;
#endif
#define UPDATE_ENDSTOP_BIT(AXIS, MINMAX) SET_BIT_TO(live_state, _ENDSTOP(AXIS, MINMAX), (READ(_ENDSTOP_PIN(AXIS, MINMAX)) != _ENDSTOP_INVERTING(AXIS, MINMAX)))
#define COPY_LIVE_STATE(SRC_BIT, DST_BIT) SET_BIT_TO(live_state, DST_BIT, TEST(live_state, SRC_BIT))
#if ENABLED(G38_PROBE_TARGET) && PIN_EXISTS(Z_MIN_PROBE) && !(CORE_IS_XY || CORE_IS_XZ)
// If G38 command is active check Z_MIN_PROBE for ALL movement
if (G38_move) UPDATE_ENDSTOP_BIT(Z, MIN_PROBE);
#endif
// With Dual X, endstops are only checked in the homing direction for the active extruder
#if ENABLED(DUAL_X_CARRIAGE)
#define E0_ACTIVE stepper.movement_extruder() == 0
#define X_MIN_TEST() ((X_HOME_DIR < 0 && E0_ACTIVE) || (X2_HOME_DIR < 0 && !E0_ACTIVE))
#define X_MAX_TEST() ((X_HOME_DIR > 0 && E0_ACTIVE) || (X2_HOME_DIR > 0 && !E0_ACTIVE))
#else
#define X_MIN_TEST() true
#define X_MAX_TEST() true
#endif
// Use HEAD for core axes, AXIS for others
#if CORE_IS_XY || CORE_IS_XZ
#define X_AXIS_HEAD X_HEAD
#else
#define X_AXIS_HEAD X_AXIS
#endif
#if CORE_IS_XY || CORE_IS_YZ
#define Y_AXIS_HEAD Y_HEAD
#else
#define Y_AXIS_HEAD Y_AXIS
#endif
#if CORE_IS_XZ || CORE_IS_YZ
#define Z_AXIS_HEAD Z_HEAD
#else
#define Z_AXIS_HEAD Z_AXIS
#endif
/**
* Check and update endstops
*/
#if HAS_X_MIN && !X_SPI_SENSORLESS
UPDATE_ENDSTOP_BIT(X, MIN);
#if ENABLED(X_DUAL_ENDSTOPS)
#if HAS_X2_MIN
UPDATE_ENDSTOP_BIT(X2, MIN);
#else
COPY_LIVE_STATE(X_MIN, X2_MIN);
#endif
#endif
#endif
#if HAS_X_MAX && !X_SPI_SENSORLESS
UPDATE_ENDSTOP_BIT(X, MAX);
#if ENABLED(X_DUAL_ENDSTOPS)
#if HAS_X2_MAX
UPDATE_ENDSTOP_BIT(X2, MAX);
#else
COPY_LIVE_STATE(X_MAX, X2_MAX);
#endif
#endif
#endif
#if HAS_Y_MIN && !Y_SPI_SENSORLESS
UPDATE_ENDSTOP_BIT(Y, MIN);
#if ENABLED(Y_DUAL_ENDSTOPS)
#if HAS_Y2_MIN
UPDATE_ENDSTOP_BIT(Y2, MIN);
#else
COPY_LIVE_STATE(Y_MIN, Y2_MIN);
#endif
#endif
#endif
#if HAS_Y_MAX && !Y_SPI_SENSORLESS
UPDATE_ENDSTOP_BIT(Y, MAX);
#if ENABLED(Y_DUAL_ENDSTOPS)
#if HAS_Y2_MAX
UPDATE_ENDSTOP_BIT(Y2, MAX);
#else
COPY_LIVE_STATE(Y_MAX, Y2_MAX);
#endif
#endif
#endif
#if HAS_Z_MIN && !Z_SPI_SENSORLESS
UPDATE_ENDSTOP_BIT(Z, MIN);
#if ENABLED(Z_MULTI_ENDSTOPS)
#if HAS_Z2_MIN
UPDATE_ENDSTOP_BIT(Z2, MIN);
#else
COPY_LIVE_STATE(Z_MIN, Z2_MIN);
#endif
#if NUM_Z_STEPPER_DRIVERS >= 3
#if HAS_Z3_MIN
UPDATE_ENDSTOP_BIT(Z3, MIN);
#else
COPY_LIVE_STATE(Z_MIN, Z3_MIN);
#endif
#endif
#if NUM_Z_STEPPER_DRIVERS >= 4
#if HAS_Z4_MIN
UPDATE_ENDSTOP_BIT(Z4, MIN);
#else
COPY_LIVE_STATE(Z_MIN, Z4_MIN);
#endif
#endif
#endif
#endif
// When closing the gap check the enabled probe
#if HAS_CUSTOM_PROBE_PIN
UPDATE_ENDSTOP_BIT(Z, MIN_PROBE);
#endif
#if HAS_Z_MAX && !Z_SPI_SENSORLESS
// Check both Z dual endstops
#if ENABLED(Z_MULTI_ENDSTOPS)
UPDATE_ENDSTOP_BIT(Z, MAX);
#if HAS_Z2_MAX
UPDATE_ENDSTOP_BIT(Z2, MAX);
#else
COPY_LIVE_STATE(Z_MAX, Z2_MAX);
#endif
#if NUM_Z_STEPPER_DRIVERS >= 3
#if HAS_Z3_MAX
UPDATE_ENDSTOP_BIT(Z3, MAX);
#else
COPY_LIVE_STATE(Z_MAX, Z3_MAX);
#endif
#endif
#if NUM_Z_STEPPER_DRIVERS >= 4
#if HAS_Z4_MAX
UPDATE_ENDSTOP_BIT(Z4, MAX);
#else
COPY_LIVE_STATE(Z_MAX, Z4_MAX);
#endif
#endif
#elif !HAS_CUSTOM_PROBE_PIN || Z_MAX_PIN != Z_MIN_PROBE_PIN
// If this pin isn't the bed probe it's the Z endstop
UPDATE_ENDSTOP_BIT(Z, MAX);
#endif
#endif
#if ENDSTOP_NOISE_THRESHOLD
/**
* Filtering out noise on endstops requires a delayed decision. Let's assume, due to noise,
* that 50% of endstop signal samples are good and 50% are bad (assuming normal distribution
* of random noise). Then the first sample has a 50% chance to be good or bad. The 2nd sample
* also has a 50% chance to be good or bad. The chances of 2 samples both being bad becomes
* 50% of 50%, or 25%. That was the previous implementation of Marlin endstop handling. It
* reduces chances of bad readings in half, at the cost of 1 extra sample period, but chances
* still exist. The only way to reduce them further is to increase the number of samples.
* To reduce the chance to 1% (1/128th) requires 7 samples (adding 7ms of delay).
*/
static esbits_t old_live_state;
if (old_live_state != live_state) {
endstop_poll_count = ENDSTOP_NOISE_THRESHOLD;
old_live_state = live_state;
}
else if (endstop_poll_count && !--endstop_poll_count)
validated_live_state = live_state;
if (!abort_enabled()) return;
#endif
// Test the current status of an endstop
#define TEST_ENDSTOP(ENDSTOP) (TEST(state(), ENDSTOP))
// Record endstop was hit
#define _ENDSTOP_HIT(AXIS, MINMAX) SBI(hit_state, _ENDSTOP(AXIS, MINMAX))
// Call the endstop triggered routine for single endstops
#define PROCESS_ENDSTOP(AXIS, MINMAX) do { \
if (TEST_ENDSTOP(_ENDSTOP(AXIS, MINMAX))) { \
_ENDSTOP_HIT(AXIS, MINMAX); \
planner.endstop_triggered(_AXIS(AXIS)); \
} \
}while(0)
// Call the endstop triggered routine for dual endstops
#define PROCESS_DUAL_ENDSTOP(A, MINMAX) do { \
const byte dual_hit = TEST_ENDSTOP(_ENDSTOP(A, MINMAX)) | (TEST_ENDSTOP(_ENDSTOP(A##2, MINMAX)) << 1); \
if (dual_hit) { \
_ENDSTOP_HIT(A, MINMAX); \
/* if not performing home or if both endstops were trigged during homing... */ \
if (!stepper.separate_multi_axis || dual_hit == 0b11) \
planner.endstop_triggered(_AXIS(A)); \
} \
}while(0)
#define PROCESS_TRIPLE_ENDSTOP(A, MINMAX) do { \
const byte triple_hit = TEST_ENDSTOP(_ENDSTOP(A, MINMAX)) | (TEST_ENDSTOP(_ENDSTOP(A##2, MINMAX)) << 1) | (TEST_ENDSTOP(_ENDSTOP(A##3, MINMAX)) << 2); \
if (triple_hit) { \
_ENDSTOP_HIT(A, MINMAX); \
/* if not performing home or if both endstops were trigged during homing... */ \
if (!stepper.separate_multi_axis || triple_hit == 0b111) \
planner.endstop_triggered(_AXIS(A)); \
} \
}while(0)
#define PROCESS_QUAD_ENDSTOP(A, MINMAX) do { \
const byte quad_hit = TEST_ENDSTOP(_ENDSTOP(A, MINMAX)) | (TEST_ENDSTOP(_ENDSTOP(A##2, MINMAX)) << 1) | (TEST_ENDSTOP(_ENDSTOP(A##3, MINMAX)) << 2) | (TEST_ENDSTOP(_ENDSTOP(A##4, MINMAX)) << 3); \
if (quad_hit) { \
_ENDSTOP_HIT(A, MINMAX); \
/* if not performing home or if both endstops were trigged during homing... */ \
if (!stepper.separate_multi_axis || quad_hit == 0b1111) \
planner.endstop_triggered(_AXIS(A)); \
} \
}while(0)
#if ENABLED(X_DUAL_ENDSTOPS)
#define PROCESS_ENDSTOP_X(MINMAX) PROCESS_DUAL_ENDSTOP(X, MINMAX)
#else
#define PROCESS_ENDSTOP_X(MINMAX) if (X_##MINMAX##_TEST()) PROCESS_ENDSTOP(X, MINMAX)
#endif
#if ENABLED(Y_DUAL_ENDSTOPS)
#define PROCESS_ENDSTOP_Y(MINMAX) PROCESS_DUAL_ENDSTOP(Y, MINMAX)
#else
#define PROCESS_ENDSTOP_Y(MINMAX) PROCESS_ENDSTOP(Y, MINMAX)
#endif
#if DISABLED(Z_MULTI_ENDSTOPS)
#define PROCESS_ENDSTOP_Z(MINMAX) PROCESS_ENDSTOP(Z, MINMAX)
#elif NUM_Z_STEPPER_DRIVERS == 4
#define PROCESS_ENDSTOP_Z(MINMAX) PROCESS_QUAD_ENDSTOP(Z, MINMAX)
#elif NUM_Z_STEPPER_DRIVERS == 3
#define PROCESS_ENDSTOP_Z(MINMAX) PROCESS_TRIPLE_ENDSTOP(Z, MINMAX)
#else
#define PROCESS_ENDSTOP_Z(MINMAX) PROCESS_DUAL_ENDSTOP(Z, MINMAX)
#endif
#if ENABLED(G38_PROBE_TARGET) && PIN_EXISTS(Z_MIN_PROBE) && !(CORE_IS_XY || CORE_IS_XZ)
#if ENABLED(G38_PROBE_AWAY)
#define _G38_OPEN_STATE (G38_move >= 4)
#else
#define _G38_OPEN_STATE LOW
#endif
// If G38 command is active check Z_MIN_PROBE for ALL movement
if (G38_move && TEST_ENDSTOP(_ENDSTOP(Z, MIN_PROBE)) != _G38_OPEN_STATE) {
if (stepper.axis_is_moving(X_AXIS)) { _ENDSTOP_HIT(X, MIN); planner.endstop_triggered(X_AXIS); }
else if (stepper.axis_is_moving(Y_AXIS)) { _ENDSTOP_HIT(Y, MIN); planner.endstop_triggered(Y_AXIS); }
else if (stepper.axis_is_moving(Z_AXIS)) { _ENDSTOP_HIT(Z, MIN); planner.endstop_triggered(Z_AXIS); }
G38_did_trigger = true;
}
#endif
// Now, we must signal, after validation, if an endstop limit is pressed or not
if (stepper.axis_is_moving(X_AXIS)) {
if (stepper.motor_direction(X_AXIS_HEAD)) { // -direction
#if HAS_X_MIN || (X_SPI_SENSORLESS && X_HOME_DIR < 0)
PROCESS_ENDSTOP_X(MIN);
#endif
}
else { // +direction
#if HAS_X_MAX || (X_SPI_SENSORLESS && X_HOME_DIR > 0)
PROCESS_ENDSTOP_X(MAX);
#endif
}
}
if (stepper.axis_is_moving(Y_AXIS)) {
if (stepper.motor_direction(Y_AXIS_HEAD)) { // -direction
#if HAS_Y_MIN || (Y_SPI_SENSORLESS && Y_HOME_DIR < 0)
PROCESS_ENDSTOP_Y(MIN);
#endif
}
else { // +direction
#if HAS_Y_MAX || (Y_SPI_SENSORLESS && Y_HOME_DIR > 0)
PROCESS_ENDSTOP_Y(MAX);
#endif
}
}
if (stepper.axis_is_moving(Z_AXIS)) {
if (stepper.motor_direction(Z_AXIS_HEAD)) { // Z -direction. Gantry down, bed up.
#if HAS_Z_MIN || (Z_SPI_SENSORLESS && Z_HOME_DIR < 0)
if (true
#if ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN)
&& z_probe_enabled
#elif HAS_CUSTOM_PROBE_PIN
&& !z_probe_enabled
#endif
) PROCESS_ENDSTOP_Z(MIN);
#endif
// When closing the gap check the enabled probe
#if HAS_CUSTOM_PROBE_PIN
if (z_probe_enabled) PROCESS_ENDSTOP(Z, MIN_PROBE);
#endif
}
else { // Z +direction. Gantry up, bed down.
#if HAS_Z_MAX || (Z_SPI_SENSORLESS && Z_HOME_DIR > 0)
#if ENABLED(Z_MULTI_ENDSTOPS)
PROCESS_ENDSTOP_Z(MAX);
#elif !HAS_CUSTOM_PROBE_PIN || Z_MAX_PIN != Z_MIN_PROBE_PIN // No probe or probe is Z_MIN || Probe is not Z_MAX
PROCESS_ENDSTOP(Z, MAX);
#endif
#endif
}
}
} // Endstops::update()
#if ENABLED(SPI_ENDSTOPS)
#define X_STOP (X_HOME_DIR < 0 ? X_MIN : X_MAX)
#define Y_STOP (Y_HOME_DIR < 0 ? Y_MIN : Y_MAX)
#define Z_STOP (Z_HOME_DIR < 0 ? Z_MIN : Z_MAX)
bool Endstops::tmc_spi_homing_check() {
bool hit = false;
#if X_SPI_SENSORLESS
if (tmc_spi_homing.x && stepperX.test_stall_status()) {
SBI(live_state, X_STOP);
hit = true;
}
#endif
#if Y_SPI_SENSORLESS
if (tmc_spi_homing.y && stepperY.test_stall_status()) {
SBI(live_state, Y_STOP);
hit = true;
}
#endif
#if Z_SPI_SENSORLESS
if (tmc_spi_homing.z && stepperZ.test_stall_status()) {
SBI(live_state, Z_STOP);
hit = true;
}
#endif
return hit;
}
void Endstops::clear_endstop_state() {
#if X_SPI_SENSORLESS
CBI(live_state, X_STOP);
#endif
#if Y_SPI_SENSORLESS
CBI(live_state, Y_STOP);
#endif
#if Z_SPI_SENSORLESS
CBI(live_state, Z_STOP);
#endif
}
#endif // SPI_ENDSTOPS
#if ENABLED(PINS_DEBUGGING)
bool Endstops::monitor_flag = false;
/**
* Monitor Endstops and Z Probe for changes
*
* If a change is detected then the LED is toggled and
* a message is sent out the serial port.
*
* Yes, we could miss a rapid back & forth change but
* that won't matter because this is all manual.
*/
void Endstops::monitor() {
static uint16_t old_live_state_local = 0;
static uint8_t local_LED_status = 0;
uint16_t live_state_local = 0;
#define ES_GET_STATE(S) if (READ(S##_PIN)) SBI(live_state_local, S)
#if HAS_X_MIN
ES_GET_STATE(X_MIN);
#endif
#if HAS_X_MAX
ES_GET_STATE(X_MAX);
#endif
#if HAS_Y_MIN
ES_GET_STATE(Y_MIN);
#endif
#if HAS_Y_MAX
ES_GET_STATE(Y_MAX);
#endif
#if HAS_Z_MIN
ES_GET_STATE(Z_MIN);
#endif
#if HAS_Z_MAX
ES_GET_STATE(Z_MAX);
#endif
#if HAS_Z_MIN_PROBE_PIN
ES_GET_STATE(Z_MIN_PROBE);
#endif
#if HAS_X2_MIN
ES_GET_STATE(X2_MIN);
#endif
#if HAS_X2_MAX
ES_GET_STATE(X2_MAX);
#endif
#if HAS_Y2_MIN
ES_GET_STATE(Y2_MIN);
#endif
#if HAS_Y2_MAX
ES_GET_STATE(Y2_MAX);
#endif
#if HAS_Z2_MIN
ES_GET_STATE(Z2_MIN);
#endif
#if HAS_Z2_MAX
ES_GET_STATE(Z2_MAX);
#endif
#if HAS_Z3_MIN
ES_GET_STATE(Z3_MIN);
#endif
#if HAS_Z3_MAX
ES_GET_STATE(Z3_MAX);
#endif
#if HAS_Z4_MIN
ES_GET_STATE(Z4_MIN);
#endif
#if HAS_Z4_MAX
ES_GET_STATE(Z4_MAX);
#endif
uint16_t endstop_change = live_state_local ^ old_live_state_local;
#define ES_REPORT_CHANGE(S) if (TEST(endstop_change, S)) SERIAL_ECHOPAIR(" " STRINGIFY(S) ":", TEST(live_state_local, S))
if (endstop_change) {
#if HAS_X_MIN
ES_REPORT_CHANGE(X_MIN);
#endif
#if HAS_X_MAX
ES_REPORT_CHANGE(X_MAX);
#endif
#if HAS_Y_MIN
ES_REPORT_CHANGE(Y_MIN);
#endif
#if HAS_Y_MAX
ES_REPORT_CHANGE(Y_MAX);
#endif
#if HAS_Z_MIN
ES_REPORT_CHANGE(Z_MIN);
#endif
#if HAS_Z_MAX
ES_REPORT_CHANGE(Z_MAX);
#endif
#if HAS_Z_MIN_PROBE_PIN
ES_REPORT_CHANGE(Z_MIN_PROBE);
#endif
#if HAS_X2_MIN
ES_REPORT_CHANGE(X2_MIN);
#endif
#if HAS_X2_MAX
ES_REPORT_CHANGE(X2_MAX);
#endif
#if HAS_Y2_MIN
ES_REPORT_CHANGE(Y2_MIN);
#endif
#if HAS_Y2_MAX
ES_REPORT_CHANGE(Y2_MAX);
#endif
#if HAS_Z2_MIN
ES_REPORT_CHANGE(Z2_MIN);
#endif
#if HAS_Z2_MAX
ES_REPORT_CHANGE(Z2_MAX);
#endif
#if HAS_Z3_MIN
ES_REPORT_CHANGE(Z3_MIN);
#endif
#if HAS_Z3_MAX
ES_REPORT_CHANGE(Z3_MAX);
#endif
#if HAS_Z4_MIN
ES_REPORT_CHANGE(Z4_MIN);
#endif
#if HAS_Z4_MAX
ES_REPORT_CHANGE(Z4_MAX);
#endif
SERIAL_ECHOLNPGM("\n");
analogWrite(pin_t(LED_PIN), local_LED_status);
local_LED_status ^= 255;
old_live_state_local = live_state_local;
}
}
#endif // PINS_DEBUGGING
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