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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 <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- #include "../inc/MarlinConfig.h"
-
- enum TempSensorID : uint8_t {
- #if ENABLED(PTC_PROBE)
- TSI_PROBE,
- #endif
- #if ENABLED(PTC_BED)
- TSI_BED,
- #endif
- #if ENABLED(PTC_HOTEND)
- TSI_EXT,
- #endif
- TSI_COUNT
- };
-
- typedef struct {
- uint8_t measurements; // Max. number of measurements to be stored (35 - 80°C)
- celsius_t temp_resolution, // Resolution in °C between measurements
- start_temp; // Base measurement; z-offset == 0
- } 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.
- */
-
- class ProbeTempComp {
- public:
-
- static constexpr temp_calib_t cali_info[TSI_COUNT] = {
- #if ENABLED(PTC_PROBE)
- { PTC_PROBE_COUNT, PTC_PROBE_RES, PTC_PROBE_START }, // Probe
- #endif
- #if ENABLED(PTC_BED)
- { PTC_BED_COUNT, PTC_BED_RES, PTC_BED_START }, // Bed
- #endif
- #if ENABLED(PTC_HOTEND)
- { PTC_HOTEND_COUNT, PTC_HOTEND_RES, PTC_HOTEND_START }, // Extruder
- #endif
- };
-
- static int16_t *sensor_z_offsets[TSI_COUNT];
- #if ENABLED(PTC_PROBE)
- static int16_t z_offsets_probe[PTC_PROBE_COUNT]; // (µm)
- #endif
- #if ENABLED(PTC_BED)
- static int16_t z_offsets_bed[PTC_BED_COUNT]; // (µm)
- #endif
- #if ENABLED(PTC_HOTEND)
- static int16_t z_offsets_hotend[PTC_HOTEND_COUNT]; // (µm)
- #endif
-
- static void reset_index() { calib_idx = 0; };
- static uint8_t get_index() { return calib_idx; }
- static void reset();
- static void clear_all_offsets() {
- TERN_(PTC_PROBE, clear_offsets(TSI_PROBE));
- TERN_(PTC_BED, clear_offsets(TSI_BED));
- TERN_(PTC_HOTEND, clear_offsets(TSI_EXT));
- }
- 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_t init_meas_z);
- static void push_back_new_measurement(const TempSensorID tsi, const_float_t meas_z);
- static bool finish_calibration(const TempSensorID tsi);
- static void set_enabled(const bool ena) { enabled = ena; }
-
- // Apply all temperature compensation adjustments
- static void apply_compensation(float &meas_z);
-
- private:
- static uint8_t calib_idx;
- static bool enabled;
-
- static void clear_offsets(const TempSensorID tsi);
-
- /**
- * Base value. Temperature compensation values will be deltas
- * to this value, set at first probe.
- */
- static float init_measurement;
-
- /**
- * 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);
-
- static void compensate_measurement(const TempSensorID tsi, const celsius_t temp, float &meas_z);
- };
-
- extern ProbeTempComp ptc;
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