diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 9259468374..84e4f49e59 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -1886,6 +1886,15 @@
#define LEVELING_BED_TEMP 50
#endif
+/**
+ * Bed Distance Sensor
+ *
+ * Measures the distance from bed to nozzle with accuracy of 0.01mm.
+ * For information about this sensor https://github.com/markniu/Bed_Distance_sensor
+ * Uses I2C port, so it requires I2C library markyue/Panda_SoftMasterI2C.
+ */
+//#define BD_SENSOR
+
/**
* Enable detailed logging of G28, G29, M48, etc.
* Turn on with the command 'M111 S32'.
diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
index 921c3c60bc..1e2e6c6483 100644
--- a/Marlin/src/MarlinCore.cpp
+++ b/Marlin/src/MarlinCore.cpp
@@ -121,6 +121,10 @@
#include "feature/bltouch.h"
#endif
+#if ENABLED(BD_SENSOR)
+ #include "feature/bedlevel/bdl/bdl.h"
+#endif
+
#if ENABLED(POLL_JOG)
#include "feature/joystick.h"
#endif
@@ -779,6 +783,9 @@ void idle(bool no_stepper_sleep/*=false*/) {
if (++idle_depth > 5) SERIAL_ECHOLNPGM("idle() call depth: ", idle_depth);
#endif
+ // Bed Distance Sensor task
+ TERN_(BD_SENSOR, bdl.process());
+
// Core Marlin activities
manage_inactivity(no_stepper_sleep);
@@ -1632,6 +1639,10 @@ void setup() {
SETUP_RUN(test_tmc_connection());
#endif
+ #if ENABLED(BD_SENSOR)
+ SETUP_RUN(bdl.init(I2C_BD_SDA_PIN, I2C_BD_SCL_PIN, I2C_BD_DELAY));
+ #endif
+
marlin_state = MF_RUNNING;
SETUP_LOG("setup() completed.");
diff --git a/Marlin/src/core/utility.cpp b/Marlin/src/core/utility.cpp
index e4fd525924..64f083e197 100644
--- a/Marlin/src/core/utility.cpp
+++ b/Marlin/src/core/utility.cpp
@@ -70,6 +70,7 @@ void safe_delay(millis_t ms) {
TERN_(NOZZLE_AS_PROBE, "NOZZLE_AS_PROBE")
TERN_(FIX_MOUNTED_PROBE, "FIX_MOUNTED_PROBE")
TERN_(HAS_Z_SERVO_PROBE, TERN(BLTOUCH, "BLTOUCH", "SERVO PROBE"))
+ TERN_(BD_SENSOR, "BD_SENSOR")
TERN_(TOUCH_MI_PROBE, "TOUCH_MI_PROBE")
TERN_(Z_PROBE_SLED, "Z_PROBE_SLED")
TERN_(Z_PROBE_ALLEN_KEY, "Z_PROBE_ALLEN_KEY")
diff --git a/Marlin/src/feature/babystep.cpp b/Marlin/src/feature/babystep.cpp
index 54ad9588f4..2e3d6a9fd2 100644
--- a/Marlin/src/feature/babystep.cpp
+++ b/Marlin/src/feature/babystep.cpp
@@ -54,6 +54,18 @@ void Babystep::add_mm(const AxisEnum axis, const_float_t mm) {
add_steps(axis, mm * planner.settings.axis_steps_per_mm[axis]);
}
+#if ENABLED(BD_SENSOR)
+ void Babystep::set_mm(const AxisEnum axis, const_float_t mm) {
+ //if (DISABLED(BABYSTEP_WITHOUT_HOMING) && axes_should_home(_BV(axis))) return;
+ const int16_t distance = mm * planner.settings.axis_steps_per_mm[axis];
+ accum = distance; // Count up babysteps for the UI
+ steps[BS_AXIS_IND(axis)] = distance;
+ TERN_(BABYSTEP_DISPLAY_TOTAL, axis_total[BS_TOTAL_IND(axis)] = distance);
+ TERN_(BABYSTEP_ALWAYS_AVAILABLE, gcode.reset_stepper_timeout());
+ TERN_(INTEGRATED_BABYSTEPPING, if (has_steps()) stepper.initiateBabystepping());
+ }
+#endif
+
void Babystep::add_steps(const AxisEnum axis, const int16_t distance) {
if (DISABLED(BABYSTEP_WITHOUT_HOMING) && axes_should_home(_BV(axis))) return;
diff --git a/Marlin/src/feature/babystep.h b/Marlin/src/feature/babystep.h
index 5693afb4fc..bbf0c5a260 100644
--- a/Marlin/src/feature/babystep.h
+++ b/Marlin/src/feature/babystep.h
@@ -63,6 +63,10 @@ public:
static void add_steps(const AxisEnum axis, const int16_t distance);
static void add_mm(const AxisEnum axis, const_float_t mm);
+ #if ENABLED(BD_SENSOR)
+ static void set_mm(const AxisEnum axis, const_float_t mm);
+ #endif
+
static bool has_steps() {
return steps[BS_AXIS_IND(X_AXIS)] || steps[BS_AXIS_IND(Y_AXIS)] || steps[BS_AXIS_IND(Z_AXIS)];
}
diff --git a/Marlin/src/feature/bedlevel/bdl/bdl.cpp b/Marlin/src/feature/bedlevel/bdl/bdl.cpp
new file mode 100644
index 0000000000..0668eb705c
--- /dev/null
+++ b/Marlin/src/feature/bedlevel/bdl/bdl.cpp
@@ -0,0 +1,195 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 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 .
+ *
+ */
+
+#include "../../../inc/MarlinConfig.h"
+
+#if ENABLED(BD_SENSOR)
+
+#include "../../../MarlinCore.h"
+#include "../../../gcode/gcode.h"
+#include "../../../module/settings.h"
+#include "../../../module/motion.h"
+#include "../../../module/planner.h"
+#include "../../../module/stepper.h"
+#include "../../../module/probe.h"
+#include "../../../module/temperature.h"
+#include "../../../module/endstops.h"
+#include "../../babystep.h"
+
+// I2C software Master library for segment bed heating and bed distance sensor
+#include
+
+#include "bdl.h"
+BDS_Leveling bdl;
+
+//#define DEBUG_OUT_BD
+
+// M102 S-5 Read raw Calibrate data
+// M102 S-6 Start Calibrate
+// M102 S4 Set the adjustable Z height value (e.g., 'M102 S4' means it will do adjusting while the Z height <= 0.4mm , disable with 'M102 S0'.)
+// M102 S-1 Read sensor information
+
+#define MAX_BD_HEIGHT 4.0f
+#define CMD_START_READ_CALIBRATE_DATA 1017
+#define CMD_END_READ_CALIBRATE_DATA 1018
+#define CMD_START_CALIBRATE 1019
+#define CMD_END_CALIBRATE 1021
+#define CMD_READ_VERSION 1016
+
+I2C_SegmentBED BD_I2C_SENSOR;
+
+#define BD_SENSOR_I2C_ADDR 0x3C
+
+int8_t BDS_Leveling::config_state;
+uint8_t BDS_Leveling::homing;
+
+void BDS_Leveling::echo_name() { SERIAL_ECHOPGM("Bed Distance Leveling"); }
+
+void BDS_Leveling::init(uint8_t _sda, uint8_t _scl, uint16_t delay_s) {
+ int ret = BD_I2C_SENSOR.i2c_init(_sda, _scl, BD_SENSOR_I2C_ADDR, delay_s);
+ if (ret != 1) SERIAL_ECHOLNPGM("BD_I2C_SENSOR Init Fail return code:", ret);
+ config_state = 0;
+}
+
+float BDS_Leveling::read() {
+ const uint16_t tmp = BD_I2C_SENSOR.BD_i2c_read();
+ float BD_z = NAN;
+ if (BD_I2C_SENSOR.BD_Check_OddEven(tmp) && (tmp & 0x3FF) < 1020)
+ BD_z = (tmp & 0x3FF) / 100.0f;
+ return BD_z;
+}
+
+void BDS_Leveling::process() {
+ //if (config_state == 0) return;
+ static millis_t next_check_ms = 0; // starting at T=0
+ static float z_pose = 0.0f;
+ const millis_t ms = millis();
+ if (ELAPSED(ms, next_check_ms)) { // timed out (or first run)
+ next_check_ms = ms + (config_state < 0 ? 1000 : 100); // check at 1Hz or 10Hz
+
+ unsigned short tmp = 0;
+ const float cur_z = planner.get_axis_position_mm(Z_AXIS); //current_position.z
+ static float old_cur_z = cur_z,
+ old_buf_z = current_position.z;
+
+ tmp = BD_I2C_SENSOR.BD_i2c_read();
+ if (BD_I2C_SENSOR.BD_Check_OddEven(tmp) && (tmp & 0x3FF) < 1020) {
+ const float z_sensor = (tmp & 0x3FF) / 100.0f;
+ if (cur_z < 0) config_state = 0;
+ //float abs_z = current_position.z > cur_z ? (current_position.z - cur_z) : (cur_z - current_position.z);
+ if ( cur_z < config_state * 0.1f
+ && config_state > 0
+ && old_cur_z == cur_z
+ && old_buf_z == current_position.z
+ && z_sensor < (MAX_BD_HEIGHT)
+ ) {
+ babystep.set_mm(Z_AXIS, cur_z - z_sensor);
+ #if ENABLED(DEBUG_OUT_BD)
+ SERIAL_ECHOLNPGM("BD:", z_sensor, ", Z:", cur_z, "|", current_position.z);
+ #endif
+ }
+ else {
+ babystep.set_mm(Z_AXIS, 0);
+ //if (old_cur_z <= cur_z) Z_DIR_WRITE(!INVERT_Z_DIR);
+ stepper.set_directions();
+ }
+ old_cur_z = cur_z;
+ old_buf_z = current_position.z;
+ endstops.bdp_state_update(z_sensor <= 0.01f);
+ //endstops.update();
+ }
+ else
+ stepper.set_directions();
+
+ #if ENABLED(DEBUG_OUT_BD)
+ SERIAL_ECHOLNPGM("BD:", tmp & 0x3FF, ", Z:", cur_z, "|", current_position.z);
+ if (BD_I2C_SENSOR.BD_Check_OddEven(tmp) == 0) SERIAL_ECHOLNPGM("errorCRC");
+ #endif
+
+ if ((tmp & 0x3FF) > 1020) {
+ BD_I2C_SENSOR.BD_i2c_stop();
+ safe_delay(10);
+ }
+
+ // read raw calibrate data
+ if (config_state == -5) {
+ BD_I2C_SENSOR.BD_i2c_write(CMD_START_READ_CALIBRATE_DATA);
+ safe_delay(1000);
+
+ for (int i = 0; i < MAX_BD_HEIGHT * 10; i++) {
+ tmp = BD_I2C_SENSOR.BD_i2c_read();
+ SERIAL_ECHOLNPGM("Calibrate data:", i, ",", tmp & 0x3FF, ", check:", BD_I2C_SENSOR.BD_Check_OddEven(tmp));
+ safe_delay(500);
+ }
+ config_state = 0;
+ BD_I2C_SENSOR.BD_i2c_write(CMD_END_READ_CALIBRATE_DATA);
+ safe_delay(500);
+ }
+ else if (config_state <= -6) { // Start Calibrate
+ safe_delay(100);
+ if (config_state == -6) {
+ //BD_I2C_SENSOR.BD_i2c_write(1019); // begin calibrate
+ //delay(1000);
+ gcode.stepper_inactive_time = SEC_TO_MS(60 * 5);
+ gcode.process_subcommands_now(F("M17 Z"));
+ gcode.process_subcommands_now(F("G1 Z0.0"));
+ z_pose = 0;
+ safe_delay(1000);
+ BD_I2C_SENSOR.BD_i2c_write(CMD_START_CALIBRATE); // Begin calibrate
+ SERIAL_ECHOLNPGM("Begin calibrate");
+ safe_delay(2000);
+ config_state = -7;
+ }
+ else if (planner.get_axis_position_mm(Z_AXIS) < 10.0f) {
+ if (z_pose >= MAX_BD_HEIGHT) {
+ BD_I2C_SENSOR.BD_i2c_write(CMD_END_CALIBRATE); // End calibrate
+ SERIAL_ECHOLNPGM("End calibrate data");
+ z_pose = 7;
+ config_state = 0;
+ safe_delay(1000);
+ }
+ else {
+ float tmp_k = 0;
+ char tmp_1[30];
+ sprintf_P(tmp_1, PSTR("G1 Z%d.%d"), int(z_pose), int(int(z_pose * 10) % 10));
+ gcode.process_subcommands_now(tmp_1);
+
+ SERIAL_ECHO(tmp_1);
+ SERIAL_ECHOLNPGM(" ,Z:", current_position.z);
+
+ while (tmp_k < (z_pose - 0.1f)) {
+ tmp_k = planner.get_axis_position_mm(Z_AXIS);
+ safe_delay(1);
+ }
+ safe_delay(800);
+ tmp = (z_pose + 0.0001f) * 10;
+ BD_I2C_SENSOR.BD_i2c_write(tmp);
+ SERIAL_ECHOLNPGM("w:", tmp, ",Zpose:", z_pose);
+ z_pose += 0.1001f;
+ //queue.enqueue_now_P(PSTR("G90"));
+ }
+ }
+ }
+ }
+}
+
+#endif // BD_SENSOR
diff --git a/Marlin/src/feature/bedlevel/bdl/bdl.h b/Marlin/src/feature/bedlevel/bdl/bdl.h
new file mode 100644
index 0000000000..6307b1ab28
--- /dev/null
+++ b/Marlin/src/feature/bedlevel/bdl/bdl.h
@@ -0,0 +1,36 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 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 .
+ *
+ */
+#pragma once
+
+#include
+
+class BDS_Leveling {
+public:
+ static int8_t config_state;
+ static uint8_t homing;
+ static void echo_name();
+ static void init(uint8_t _sda, uint8_t _scl, uint16_t delay_s);
+ static void process();
+ static float read();
+};
+
+extern BDS_Leveling bdl;
diff --git a/Marlin/src/gcode/calibrate/G28.cpp b/Marlin/src/gcode/calibrate/G28.cpp
index e22e3cb5f8..a6dff2d75a 100644
--- a/Marlin/src/gcode/calibrate/G28.cpp
+++ b/Marlin/src/gcode/calibrate/G28.cpp
@@ -36,6 +36,10 @@
#include "../../feature/bedlevel/bedlevel.h"
#endif
+#if ENABLED(BD_SENSOR)
+ #include "../../feature/bedlevel/bdl/bdl.h"
+#endif
+
#if ENABLED(SENSORLESS_HOMING)
#include "../../feature/tmc_util.h"
#endif
@@ -202,7 +206,9 @@ void GcodeSuite::G28() {
DEBUG_SECTION(log_G28, "G28", DEBUGGING(LEVELING));
if (DEBUGGING(LEVELING)) log_machine_info();
- /*
+ TERN_(BD_SENSOR, bdl.config_state = 0);
+
+ /**
* Set the laser power to false to stop the planner from processing the current power setting.
*/
#if ENABLED(LASER_FEATURE)
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index bbfe561ffe..405e2d460c 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -577,6 +577,10 @@ void GcodeSuite::process_parsed_command(const bool no_ok/*=false*/) {
case 100: M100(); break; // M100: Free Memory Report
#endif
+ #if ENABLED(BD_SENSOR)
+ case 102: M102(); break; // M102: Configure Bed Distance Sensor
+ #endif
+
#if HAS_EXTRUDERS
case 104: M104(); break; // M104: Set hot end temperature
case 109: M109(); break; // M109: Wait for hotend temperature to reach target
diff --git a/Marlin/src/gcode/gcode.h b/Marlin/src/gcode/gcode.h
index 135cfc7f43..2b15706395 100644
--- a/Marlin/src/gcode/gcode.h
+++ b/Marlin/src/gcode/gcode.h
@@ -132,6 +132,8 @@
*
* M100 - Watch Free Memory (for debugging) (Requires M100_FREE_MEMORY_WATCHER)
*
+ * M102 - Configure Bed Distance Sensor. (Requires BD_SENSOR)
+ *
* M104 - Set extruder target temp.
* M105 - Report current temperatures.
* M106 - Set print fan speed.
@@ -705,6 +707,11 @@ private:
static void M100();
#endif
+ #if ENABLED(BD_SENSOR)
+ static void M102();
+ static void M102_report(const bool forReplay=true);
+ #endif
+
#if HAS_EXTRUDERS
static void M104_M109(const bool isM109);
FORCE_INLINE static void M104() { M104_M109(false); }
diff --git a/Marlin/src/gcode/probe/M102.cpp b/Marlin/src/gcode/probe/M102.cpp
new file mode 100644
index 0000000000..b70c9aed18
--- /dev/null
+++ b/Marlin/src/gcode/probe/M102.cpp
@@ -0,0 +1,57 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 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 .
+ *
+ */
+
+/**
+ * M102.cpp - Configure Bed Distance Sensor
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(BD_SENSOR)
+
+#include "../gcode.h"
+#include "../../feature/bedlevel/bdl/bdl.h"
+
+/**
+ * M102: Configure the Bed Distance Sensor
+ *
+ * M102 S<10ths> : Set adjustable Z height in 10ths of a mm (e.g., 'M102 S4' enables adjusting for Z <= 0.4mm.)
+ * M102 S0 : Disable adjustable Z height.
+ *
+ * Negative S values are commands:
+ * M102 S-1 : Read sensor information
+ * M102 S-5 : Read raw Calibration data
+ * M102 S-6 : Start Calibration
+ */
+void GcodeSuite::M102() {
+ if (parser.seenval('S'))
+ bdl.config_state = parser.value_int();
+ else
+ M102_report();
+}
+
+void GcodeSuite::M102_report(const bool forReplay/*=true*/) {
+ report_heading(forReplay, F("Bed Distance Sensor"));
+ SERIAL_ECHOLNPGM(" M102 S", bdl.config_state);
+}
+
+#endif // BD_SENSOR
diff --git a/Marlin/src/inc/Conditionals_LCD.h b/Marlin/src/inc/Conditionals_LCD.h
index a6be04e237..c1c174da46 100644
--- a/Marlin/src/inc/Conditionals_LCD.h
+++ b/Marlin/src/inc/Conditionals_LCD.h
@@ -1103,7 +1103,7 @@
#if ANY(TOUCH_MI_PROBE, Z_PROBE_ALLEN_KEY, SOLENOID_PROBE, Z_PROBE_SLED, RACK_AND_PINION_PROBE, SENSORLESS_PROBING, MAGLEV4, MAG_MOUNTED_PROBE)
#define HAS_STOWABLE_PROBE 1
#endif
-#if ANY(HAS_STOWABLE_PROBE, HAS_Z_SERVO_PROBE, FIX_MOUNTED_PROBE, NOZZLE_AS_PROBE)
+#if ANY(HAS_STOWABLE_PROBE, HAS_Z_SERVO_PROBE, FIX_MOUNTED_PROBE, BD_SENSOR, NOZZLE_AS_PROBE)
#define HAS_BED_PROBE 1
#endif
diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index bdcd1d3fce..ff8730d07b 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1660,8 +1660,8 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
*/
#if 1 < 0 \
+ (DISABLED(BLTOUCH) && HAS_Z_SERVO_PROBE) \
- + COUNT_ENABLED(PROBE_MANUALLY, BLTOUCH, FIX_MOUNTED_PROBE, NOZZLE_AS_PROBE, TOUCH_MI_PROBE, SOLENOID_PROBE, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, RACK_AND_PINION_PROBE, SENSORLESS_PROBING, MAGLEV4, MAG_MOUNTED_PROBE)
- #error "Please enable only one probe option: PROBE_MANUALLY, SENSORLESS_PROBING, BLTOUCH, FIX_MOUNTED_PROBE, NOZZLE_AS_PROBE, TOUCH_MI_PROBE, SOLENOID_PROBE, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, MAGLEV4, MAG_MOUNTED_PROBE or Z Servo."
+ + COUNT_ENABLED(PROBE_MANUALLY, BLTOUCH, BD_SENSOR, FIX_MOUNTED_PROBE, NOZZLE_AS_PROBE, TOUCH_MI_PROBE, SOLENOID_PROBE, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, RACK_AND_PINION_PROBE, SENSORLESS_PROBING, MAGLEV4, MAG_MOUNTED_PROBE)
+ #error "Please enable only one probe option: PROBE_MANUALLY, SENSORLESS_PROBING, BLTOUCH, BD_SENSOR, FIX_MOUNTED_PROBE, NOZZLE_AS_PROBE, TOUCH_MI_PROBE, SOLENOID_PROBE, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, MAGLEV4, MAG_MOUNTED_PROBE or Z Servo."
#endif
#if HAS_BED_PROBE
diff --git a/Marlin/src/inc/Warnings.cpp b/Marlin/src/inc/Warnings.cpp
index 054a006aff..e665ac5bca 100644
--- a/Marlin/src/inc/Warnings.cpp
+++ b/Marlin/src/inc/Warnings.cpp
@@ -773,3 +773,10 @@
#if MB(BTT_BTT002_V1_0, EINSY_RAMBO) && DISABLED(NO_MK3_FAN_PINS_WARNING)
#warning "Define MK3_FAN_PINS to swap hotend and part cooling fan pins. (Define NO_MK3_FAN_PINS_WARNING to suppress this warning.)"
#endif
+
+/**
+ * BD Sensor should always include BABYSTEPPING
+ */
+#if ENABLED(BD_SENSOR) && DISABLED(BABYSTEPPING)
+ #warning "BABYSTEPPING is recommended with BD_SENSOR."
+#endif
diff --git a/Marlin/src/module/endstops.cpp b/Marlin/src/module/endstops.cpp
index 1ee4b92b5f..33c94ae357 100644
--- a/Marlin/src/module/endstops.cpp
+++ b/Marlin/src/module/endstops.cpp
@@ -63,6 +63,13 @@ bool Endstops::enabled, Endstops::enabled_globally; // Initialized by settings.l
volatile Endstops::endstop_mask_t Endstops::hit_state;
Endstops::endstop_mask_t Endstops::live_state = 0;
+#if ENABLED(BD_SENSOR)
+ bool Endstops::bdp_state; // = false
+ #define READ_ENDSTOP(P) ((P == Z_MIN_PIN) ? bdp_state : READ(P))
+#else
+ #define READ_ENDSTOP(P) READ(P)
+#endif
+
#if ENDSTOP_NOISE_THRESHOLD
Endstops::endstop_mask_t Endstops::validated_live_state;
uint8_t Endstops::endstop_poll_count;
@@ -566,7 +573,7 @@ static void print_es_state(const bool is_hit, FSTR_P const flabel=nullptr) {
void __O2 Endstops::report_states() {
TERN_(BLTOUCH, bltouch._set_SW_mode());
SERIAL_ECHOLNPGM(STR_M119_REPORT);
- #define ES_REPORT(S) print_es_state(READ(S##_PIN) != S##_ENDSTOP_INVERTING, F(STR_##S))
+ #define ES_REPORT(S) print_es_state(READ_ENDSTOP(S##_PIN) != S##_ENDSTOP_INVERTING, F(STR_##S))
#if HAS_X_MIN
ES_REPORT(X_MIN);
#endif
@@ -703,7 +710,7 @@ void Endstops::update() {
#endif
// Macros to update / copy the live_state
- #define UPDATE_ENDSTOP_BIT(AXIS, MINMAX) SET_BIT_TO(live_state, _ENDSTOP(AXIS, MINMAX), (READ(_ENDSTOP_PIN(AXIS, MINMAX)) != _ENDSTOP_INVERTING(AXIS, MINMAX)))
+ #define UPDATE_ENDSTOP_BIT(AXIS, MINMAX) SET_BIT_TO(live_state, _ENDSTOP(AXIS, MINMAX), (READ_ENDSTOP(_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) && NONE(CORE_IS_XY, CORE_IS_XZ, MARKFORGED_XY, MARKFORGED_YX)
@@ -1434,7 +1441,7 @@ void Endstops::update() {
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)
+ #define ES_GET_STATE(S) if (READ_ENDSTOP(S##_PIN)) SBI(live_state_local, S)
#if HAS_X_MIN
ES_GET_STATE(X_MIN);
diff --git a/Marlin/src/module/endstops.h b/Marlin/src/module/endstops.h
index 9e411adbda..bffa7fdc39 100644
--- a/Marlin/src/module/endstops.h
+++ b/Marlin/src/module/endstops.h
@@ -166,6 +166,11 @@ class Endstops {
*/
static void update();
+ #if ENABLED(BD_SENSOR)
+ static bool bdp_state;
+ static void bdp_state_update(const bool z_state) { bdp_state = z_state; }
+ #endif
+
/**
* Get Endstop hit state.
*/
diff --git a/Marlin/src/module/probe.cpp b/Marlin/src/module/probe.cpp
index cc6b521fe1..3baef31479 100644
--- a/Marlin/src/module/probe.cpp
+++ b/Marlin/src/module/probe.cpp
@@ -44,6 +44,10 @@
#include "../feature/bedlevel/bedlevel.h"
#endif
+#if ENABLED(BD_SENSOR)
+ #include "../feature/bedlevel/bdl/bdl.h"
+#endif
+
#if ENABLED(DELTA)
#include "delta.h"
#endif
@@ -878,6 +882,8 @@ float Probe::probe_at_point(const_float_t rx, const_float_t ry, const ProbePtRai
// Move the probe to the starting XYZ
do_blocking_move_to(npos, feedRate_t(XY_PROBE_FEEDRATE_MM_S));
+ TERN_(BD_SENSOR, return bdl.read());
+
float measured_z = NAN;
if (!deploy()) {
measured_z = run_z_probe(sanity_check) + offset.z;
diff --git a/Marlin/src/module/stepper.cpp b/Marlin/src/module/stepper.cpp
index b759d97098..beea674ced 100644
--- a/Marlin/src/module/stepper.cpp
+++ b/Marlin/src/module/stepper.cpp
@@ -97,6 +97,10 @@ Stepper stepper; // Singleton
#include "../MarlinCore.h"
#include "../HAL/shared/Delay.h"
+#if ENABLED(BD_SENSOR)
+ #include "../feature/bedlevel/bdl/bdl.h"
+#endif
+
#if ENABLED(INTEGRATED_BABYSTEPPING)
#include "../feature/babystep.h"
#endif
diff --git a/Marlin/src/module/stepper/indirection.h b/Marlin/src/module/stepper/indirection.h
index 3f21530af7..e9a9aa7de9 100644
--- a/Marlin/src/module/stepper/indirection.h
+++ b/Marlin/src/module/stepper/indirection.h
@@ -981,7 +981,7 @@ void reset_stepper_drivers(); // Called by settings.load / settings.reset
#if HAS_Z_AXIS
#define ENABLE_AXIS_Z() if (SHOULD_ENABLE(z)) { ENABLE_STEPPER_Z(); ENABLE_STEPPER_Z2(); ENABLE_STEPPER_Z3(); ENABLE_STEPPER_Z4(); AFTER_CHANGE(z, true); }
- #define DISABLE_AXIS_Z() if (SHOULD_DISABLE(z)) { DISABLE_STEPPER_Z(); DISABLE_STEPPER_Z2(); DISABLE_STEPPER_Z3(); DISABLE_STEPPER_Z4(); AFTER_CHANGE(z, false); set_axis_untrusted(Z_AXIS); Z_RESET(); }
+ #define DISABLE_AXIS_Z() if (SHOULD_DISABLE(z)) { DISABLE_STEPPER_Z(); DISABLE_STEPPER_Z2(); DISABLE_STEPPER_Z3(); DISABLE_STEPPER_Z4(); AFTER_CHANGE(z, false); set_axis_untrusted(Z_AXIS); Z_RESET(); TERN_(BD_SENSOR, bdl.config_state = 0); }
#else
#define ENABLE_AXIS_Z() NOOP
#define DISABLE_AXIS_Z() NOOP
diff --git a/Marlin/src/pins/stm32f1/pins_PANDA_PI_V29.h b/Marlin/src/pins/stm32f1/pins_PANDA_PI_V29.h
index 5a82fbcd6d..ed602d8d01 100644
--- a/Marlin/src/pins/stm32f1/pins_PANDA_PI_V29.h
+++ b/Marlin/src/pins/stm32f1/pins_PANDA_PI_V29.h
@@ -38,6 +38,12 @@
#define MARLIN_EEPROM_SIZE EEPROM_PAGE_SIZE // 2K
#endif
+#if ENABLED(BD_SENSOR)
+ #define I2C_BD_SDA_PIN PC6
+ #define I2C_BD_SCL_PIN PB2
+ #define I2C_BD_DELAY 10 // (seconds)
+#endif
+
//
// Servos
//
diff --git a/buildroot/tests/PANDA_PI_V29 b/buildroot/tests/PANDA_PI_V29
new file mode 100755
index 0000000000..a176e571ba
--- /dev/null
+++ b/buildroot/tests/PANDA_PI_V29
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+#
+# Build tests for PANDA_PI_V29
+#
+
+# exit on first failure
+set -e
+
+#
+# Build with the default configurations
+#
+restore_configs
+opt_set MOTHERBOARD BOARD_PANDA_PI_V29 SERIAL_PORT -1 \
+ Z_CLEARANCE_DEPLOY_PROBE 0 Z_CLEARANCE_BETWEEN_PROBES 1 Z_CLEARANCE_MULTI_PROBE 1
+opt_enable BD_SENSOR AUTO_BED_LEVELING_BILINEAR Z_SAFE_HOMING BABYSTEPPING
+exec_test $1 $2 "Panda Pi V29 | BD Sensor | ABL-B" "$3"
+
+# clean up
+restore_configs
diff --git a/ini/features.ini b/ini/features.ini
index b6a07c76df..2f26aa2523 100644
--- a/ini/features.ini
+++ b/ini/features.ini
@@ -99,6 +99,8 @@ HAS_MCP3426_ADC = src_filter=+ +
AUTO_BED_LEVELING_(3POINT|(BI)?LINEAR) = src_filter=+
X_AXIS_TWIST_COMPENSATION = src_filter=+ + +
+BD_SENSOR = markyue/Panda_SoftMasterI2C
+ src_filter=+ +
MESH_BED_LEVELING = src_filter=+ +
AUTO_BED_LEVELING_UBL = src_filter=+ +
UBL_HILBERT_CURVE = src_filter=+
diff --git a/ini/stm32f1.ini b/ini/stm32f1.ini
index d68704216f..1e29ea6de5 100644
--- a/ini/stm32f1.ini
+++ b/ini/stm32f1.ini
@@ -83,7 +83,8 @@ build_flags = ${common_STM32F103RC_variant.build_flags}
-DTIMER_SERVO=TIM1
board_build.offset = 0x5000
board_upload.offset_address = 0x08005000
-
+lib_deps =
+ markyue/Panda_SoftMasterI2C@1.0.3
#
# MKS Robin (STM32F103ZET6)
# Uses HAL STM32 to support Marlin UI for TFT screen with optional touch panel
diff --git a/platformio.ini b/platformio.ini
index 4f5598f6af..751543c8a3 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -103,6 +103,7 @@ default_src_filter = + - - + -
- -
- -
+ - -
- -
- -
-