mirror of https://github.com/arendst/Tasmota.git
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
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/* Touchscreen library for XPT2046 Touch Controller Chip
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* Copyright (c) 2015, Paul Stoffregen, paul@pjrc.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef _XPT2046_Touchscreen_h_
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#define _XPT2046_Touchscreen_h_
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#include "Arduino.h"
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#include <SPI.h>
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#if defined(__IMXRT1062__)
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#if __has_include(<FlexIOSPI.h>)
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#include <FlexIOSPI.h>
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#endif
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#endif
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#if ARDUINO < 10600
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#error "Arduino 1.6.0 or later (SPI library) is required"
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#endif
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class TS_Point {
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public:
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TS_Point(void) : x(0), y(0), z(0) {}
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TS_Point(int16_t x, int16_t y, int16_t z) : x(x), y(y), z(z) {}
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bool operator==(TS_Point p) { return ((p.x == x) && (p.y == y) && (p.z == z)); }
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bool operator!=(TS_Point p) { return ((p.x != x) || (p.y != y) || (p.z != z)); }
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int16_t x, y, z;
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};
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class XPT2046_Touchscreen {
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public:
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constexpr XPT2046_Touchscreen(uint8_t cspin, uint8_t tirq=255)
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: csPin(cspin), tirqPin(tirq) { }
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bool begin(SPIClass &wspi = SPI);
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#if defined(_FLEXIO_SPI_H_)
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bool begin(FlexIOSPI &wflexspi);
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#endif
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TS_Point getPoint();
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bool tirqTouched();
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bool touched();
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void readData(uint16_t *x, uint16_t *y, uint8_t *z);
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bool bufferEmpty();
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uint8_t bufferSize() { return 1; }
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void setRotation(uint8_t n) { rotation = n % 4; }
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// protected:
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volatile bool isrWake=true;
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private:
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void update();
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uint8_t csPin, tirqPin, rotation=1;
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int16_t xraw=0, yraw=0, zraw=0;
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uint32_t msraw=0x80000000;
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SPIClass *_pspi = nullptr;
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#if defined(_FLEXIO_SPI_H_)
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FlexIOSPI *_pflexspi = nullptr;
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#endif
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};
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#ifndef ISR_PREFIX
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#if defined(ESP8266)
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#define ISR_PREFIX ICACHE_RAM_ATTR
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#elif defined(ESP32)
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// TODO: should this also be ICACHE_RAM_ATTR ??
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#define ISR_PREFIX IRAM_ATTR
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#else
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#define ISR_PREFIX
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#endif
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#endif
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#endif
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