Firmware2/Marlin/src/feature/touch/xpt2046.h

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/**
* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* 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
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#pragma once
#include <stdint.h>
// Relies on XPT2046-compatible mode of ADS7843,
// hence no Z1 / Z2 measurements are possible.
#define XPT2046_DFR_MODE 0x00
#define XPT2046_SER_MODE 0x04
#define XPT2046_CONTROL 0x80
enum XPTCoordinate : uint8_t {
XPT2046_X = 0x10,
XPT2046_Y = 0x50,
XPT2046_Z1 = 0x30,
XPT2046_Z2 = 0x40
};
class XPT2046 {
public:
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static void init();
static uint8_t read_buttons();
bool getTouchPoint(uint16_t &x, uint16_t &y);
static bool isTouched();
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inline void waitForRelease() { while (isTouched()) { /* nada */ } }
inline void waitForTouch(uint16_t &x, uint16_t &y) { while (!getTouchPoint(x, y)) { /* nada */ } }
private:
static uint16_t getInTouch(const XPTCoordinate coordinate);
};
extern XPT2046 touch;