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92 lines
3.5 KiB
92 lines
3.5 KiB
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include "../../inc/MarlinConfigPre.h"
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#include "tft_io.h"
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#ifndef TOUCH_SCREEN_CALIBRATION_PRECISION
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#define TOUCH_SCREEN_CALIBRATION_PRECISION 80
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#endif
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#ifndef TOUCH_SCREEN_HOLD_TO_CALIBRATE_MS
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#define TOUCH_SCREEN_HOLD_TO_CALIBRATE_MS 2500
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#endif
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typedef struct __attribute__((__packed__)) {
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int32_t x, y;
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int16_t offset_x, offset_y;
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uint8_t orientation;
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} touch_calibration_t;
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typedef struct __attribute__((__packed__)) {
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uint16_t x, y;
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int16_t raw_x, raw_y;
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} touch_calibration_point_t;
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enum calibrationState : uint8_t {
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CALIBRATION_TOP_LEFT = 0x00,
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CALIBRATION_BOTTOM_LEFT,
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CALIBRATION_TOP_RIGHT,
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CALIBRATION_BOTTOM_RIGHT,
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CALIBRATION_SUCCESS,
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CALIBRATION_FAIL,
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CALIBRATION_NONE,
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};
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class TouchCalibration {
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public:
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static calibrationState calibration_state;
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static touch_calibration_point_t calibration_points[4];
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static bool validate_precision(int32_t a, int32_t b) { return (a > b ? (100 * b) / a : (100 * a) / b) > TOUCH_SCREEN_CALIBRATION_PRECISION; }
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static bool validate_precision_x(uint8_t a, uint8_t b) { return validate_precision(calibration_points[a].raw_x, calibration_points[b].raw_x); }
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static bool validate_precision_y(uint8_t a, uint8_t b) { return validate_precision(calibration_points[a].raw_y, calibration_points[b].raw_y); }
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static void validate_calibration();
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static touch_calibration_t calibration;
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static uint8_t failed_count;
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static void calibration_reset() { calibration = { TOUCH_CALIBRATION_X, TOUCH_CALIBRATION_Y, TOUCH_OFFSET_X, TOUCH_OFFSET_Y, TOUCH_ORIENTATION }; }
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static bool need_calibration() { return !calibration.offset_x && !calibration.offset_y && !calibration.x && !calibration.y; }
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static calibrationState calibration_start() {
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calibration = { 0, 0, 0, 0, TOUCH_ORIENTATION_NONE };
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calibration_state = CALIBRATION_TOP_LEFT;
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calibration_points[CALIBRATION_TOP_LEFT].x = 30;
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calibration_points[CALIBRATION_TOP_LEFT].y = 30;
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calibration_points[CALIBRATION_BOTTOM_LEFT].x = 30;
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calibration_points[CALIBRATION_BOTTOM_LEFT].y = TFT_HEIGHT - 31;
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calibration_points[CALIBRATION_TOP_RIGHT].x = TFT_WIDTH - 31;
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calibration_points[CALIBRATION_TOP_RIGHT].y = 30;
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calibration_points[CALIBRATION_BOTTOM_RIGHT].x = TFT_WIDTH - 31;
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calibration_points[CALIBRATION_BOTTOM_RIGHT].y = TFT_HEIGHT - 31;
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failed_count = 0;
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return calibration_state;
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}
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static void calibration_end() { calibration_state = CALIBRATION_NONE; }
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static calibrationState get_calibration_state() { return calibration_state; }
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static bool calibration_loaded() {
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if (need_calibration()) calibration_reset();
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return !need_calibration();
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}
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static bool handleTouch(uint16_t x, uint16_t y);
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};
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extern TouchCalibration touch_calibration;
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