115 lines
4 KiB
C++
115 lines
4 KiB
C++
/**
|
|
* 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/>.
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
#include "../inc/MarlinConfig.h"
|
|
|
|
enum TempSensorID : uint8_t {
|
|
TSI_PROBE,
|
|
TSI_BED,
|
|
#if ENABLED(USE_TEMP_EXT_COMPENSATION)
|
|
TSI_EXT,
|
|
#endif
|
|
TSI_COUNT
|
|
};
|
|
|
|
typedef struct {
|
|
uint8_t measurements; // Max. number of measurements to be stored (35 - 80°C)
|
|
float temp_res, // Resolution in °C between measurements
|
|
start_temp, // Base measurement; z-offset == 0
|
|
end_temp;
|
|
} temp_calib_t;
|
|
|
|
/**
|
|
* Probe temperature compensation implementation.
|
|
* Z-probes like the P.I.N.D.A V2 allow for compensation of
|
|
* measurement errors/shifts due to changed temperature.
|
|
*/
|
|
|
|
static constexpr temp_calib_t cali_info_init[TSI_COUNT] = {
|
|
{ 10, 5, 30, 30 + 10 * 5 }, // Probe
|
|
{ 10, 5, 60, 60 + 10 * 5 }, // Bed
|
|
#if ENABLED(USE_TEMP_EXT_COMPENSATION)
|
|
{ 20, 5, 180, 180 + 5 * 20 } // Extruder
|
|
#endif
|
|
};
|
|
|
|
class ProbeTempComp {
|
|
public:
|
|
|
|
static const temp_calib_t cali_info[TSI_COUNT];
|
|
|
|
// Where to park nozzle to wait for probe cooldown
|
|
static constexpr xyz_pos_t park_point = PTC_PARK_POS;
|
|
|
|
// XY coordinates of nozzle for probing the bed
|
|
static constexpr xy_pos_t measure_point = PTC_PROBE_POS; // Coordinates to probe
|
|
//measure_point = { 12.0f, 7.3f }; // Coordinates for the MK52 magnetic heatbed
|
|
|
|
static constexpr int probe_calib_bed_temp = BED_MAXTEMP - 10, // Bed temperature while calibrating probe
|
|
bed_calib_probe_temp = 30; // Probe temperature while calibrating bed
|
|
|
|
static int16_t *sensor_z_offsets[TSI_COUNT],
|
|
z_offsets_probe[cali_info_init[TSI_PROBE].measurements], // (µm)
|
|
z_offsets_bed[cali_info_init[TSI_BED].measurements]; // (µm)
|
|
|
|
#if ENABLED(USE_TEMP_EXT_COMPENSATION)
|
|
static int16_t z_offsets_ext[cali_info_init[TSI_EXT].measurements]; // (µm)
|
|
#endif
|
|
|
|
static inline void reset_index() { calib_idx = 0; };
|
|
static inline uint8_t get_index() { return calib_idx; }
|
|
static void clear_offsets(const TempSensorID tsi);
|
|
static inline void clear_all_offsets() {
|
|
clear_offsets(TSI_BED);
|
|
clear_offsets(TSI_PROBE);
|
|
#if ENABLED(USE_TEMP_EXT_COMPENSATION)
|
|
clear_offsets(TSI_EXT);
|
|
#endif
|
|
}
|
|
static bool set_offset(const TempSensorID tsi, const uint8_t idx, const int16_t offset);
|
|
static void print_offsets();
|
|
static void prepare_new_calibration(const float &init_meas_z);
|
|
static void push_back_new_measurement(const TempSensorID tsi, const float &meas_z);
|
|
static bool finish_calibration(const TempSensorID tsi);
|
|
static void compensate_measurement(const TempSensorID tsi, const float &temp, float &meas_z);
|
|
|
|
private:
|
|
static uint8_t calib_idx;
|
|
|
|
/**
|
|
* Base value. Temperature compensation values will be deltas
|
|
* to this value, set at first probe.
|
|
*/
|
|
static float init_measurement;
|
|
|
|
static float get_offset_for_temperature(const TempSensorID tsi, const float &temp);
|
|
|
|
/**
|
|
* Fit a linear function in measured temperature offsets
|
|
* to allow generating values of higher temperatures.
|
|
*/
|
|
static bool linear_regression(const TempSensorID tsi, float &k, float &d);
|
|
};
|
|
|
|
extern ProbeTempComp temp_comp;
|