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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"
#if ENABLED(TOUCH_BUTTONS_HW_SPI)
#include <SPI.h>
#endif
#ifndef TOUCH_MISO_PIN
#define TOUCH_MISO_PIN SD_MISO_PIN
#endif
#ifndef TOUCH_MOSI_PIN
#define TOUCH_MOSI_PIN SD_MOSI_PIN
#endif
#ifndef TOUCH_SCK_PIN
#define TOUCH_SCK_PIN SD_SCK_PIN
#endif
#ifndef TOUCH_CS_PIN
#define TOUCH_CS_PIN SD_SS_PIN
#endif
#ifndef TOUCH_INT_PIN
#define TOUCH_INT_PIN -1
#endif
#define XPT2046_DFR_MODE 0x00
#define XPT2046_SER_MODE 0x04
#define XPT2046_CONTROL 0x80
enum XPTCoordinate : uint8_t {
XPT2046_X = 0x10 | XPT2046_CONTROL | XPT2046_DFR_MODE,
XPT2046_Y = 0x50 | XPT2046_CONTROL | XPT2046_DFR_MODE,
XPT2046_Z1 = 0x30 | XPT2046_CONTROL | XPT2046_DFR_MODE,
XPT2046_Z2 = 0x40 | XPT2046_CONTROL | XPT2046_DFR_MODE,
};
#if !defined(XPT2046_Z1_THRESHOLD)
#define XPT2046_Z1_THRESHOLD 10
#endif
class XPT2046 {
private:
static bool isBusy() { return false; }
static uint16_t getRawData(const XPTCoordinate coordinate);
static bool isTouched();
static inline void DataTransferBegin() { WRITE(TOUCH_CS_PIN, LOW); };
static inline void DataTransferEnd() { WRITE(TOUCH_CS_PIN, HIGH); };
#if ENABLED(TOUCH_BUTTONS_HW_SPI)
static uint16_t HardwareIO(uint16_t data);
#endif
static uint16_t SoftwareIO(uint16_t data);
static uint16_t IO(uint16_t data = 0);
public:
#if ENABLED(TOUCH_BUTTONS_HW_SPI)
static SPIClass SPIx;
#endif
static void Init();
static bool getRawPoint(int16_t *x, int16_t *y);
};
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