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/**
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*
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* @license MIT License
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*
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* Copyright (c) 2025 lewis he
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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 and this permission notice shall be included in all
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* 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 THE
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* SOFTWARE.
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*
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* @file TouchDrvInterface_Example.ino
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* @author Lewis He (lewishe@outlook.com)
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* @date 2025-01-20
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* @note TouchDrvInterface_Example use LilyGo T-RGB,T-RGB has three types of screens, each of which uses different touch driver chips.
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* The example demonstrates using the touch interface class and one sketch is suitable for three types of touch chips.
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*/
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#include <Wire.h>
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#include <SPI.h>
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#include <Arduino.h>
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#include "TouchDrvFT6X36.hpp"
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#include "TouchDrvCSTXXX.hpp"
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#include "TouchDrvGT911.hpp"
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#include "ExtensionIOXL9555.hpp"
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#include "SensorWireHelper.h"
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#ifndef TOUCH_SDA
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#define TOUCH_SDA 8
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#endif
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#ifndef TOUCH_SCL
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#define TOUCH_SCL 48
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#endif
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#ifndef TOUCH_IRQ
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#define TOUCH_IRQ 1
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#endif
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#ifndef TOUCH_RST
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#define TOUCH_RST 1
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#endif
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// Use the TouchDrvInterface base class for automatic discovery and use of multi-touch devices
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TouchDrvInterface *touchDrv;
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// T-RGB uses XL9555 as the reset control of the touch screen
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ExtensionIOXL9555 extension;
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int16_t x[5], y[5];
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ExtensionIOXL9555::ExtensionGPIO tp_reset = ExtensionIOXL9555::IO1;
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void TouchDrvDigitalWrite(uint8_t gpio, uint8_t level)
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{
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if (gpio & 0x80) {
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extension.digitalWrite(gpio & 0x7F, level);
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} else {
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digitalWrite(gpio, level);
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}
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}
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uint8_t TouchDrvDigitalRead(uint8_t gpio)
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{
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if (gpio & 0x80) {
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return extension.digitalRead(gpio & 0x7F);
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} else {
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return digitalRead(gpio);
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}
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}
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void TouchDrvPinMode(uint8_t gpio, uint8_t mode)
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{
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if (gpio & 0x80) {
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extension.pinMode(gpio & 0x7F, mode);
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} else {
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pinMode(gpio, mode);
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}
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}
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bool setupTouchDrv()
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{
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// Add the highest bit to indicate that the GPIO extension is used, not the ESP's GPIO
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const uint8_t touch_reset_pin = tp_reset | 0x80;
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const uint8_t touch_irq_pin = TOUCH_IRQ;
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bool result = false;
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touchDrv = new TouchDrvCSTXXX();
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touchDrv->setGpioCallback(TouchDrvPinMode, TouchDrvDigitalWrite, TouchDrvDigitalRead);
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touchDrv->setPins(touch_reset_pin, touch_irq_pin);
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result = touchDrv->begin(Wire, CST816_SLAVE_ADDRESS, TOUCH_SDA, TOUCH_SCL);
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if (result) {
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const char *model = touchDrv->getModelName();
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Serial.print("Successfully initialized "); Serial.print(model);
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Serial.print(",using "); Serial.print(model); Serial.println(" Driver!");
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return true;
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}
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delete touchDrv;
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touchDrv = new TouchDrvGT911();
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touchDrv->setGpioCallback(TouchDrvPinMode, TouchDrvDigitalWrite, TouchDrvDigitalRead);
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touchDrv->setPins(touch_reset_pin, touch_irq_pin);
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result = touchDrv->begin(Wire, GT911_SLAVE_ADDRESS_L, TOUCH_SDA, TOUCH_SCL);
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if (result) {
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const char *model = touchDrv->getModelName();
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Serial.print("Successfully initialized "); Serial.print(model);
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Serial.print(",using "); Serial.print(model); Serial.println(" Driver!");
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return true;
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}
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delete touchDrv;
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touchDrv = new TouchDrvFT6X36();
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touchDrv->setGpioCallback(TouchDrvPinMode, TouchDrvDigitalWrite, TouchDrvDigitalRead);
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touchDrv->setPins(touch_reset_pin, touch_irq_pin);
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result = touchDrv->begin(Wire, FT3267_SLAVE_ADDRESS, TOUCH_SDA, TOUCH_SCL);
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if (result) {
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TouchDrvFT6X36 *tmp = static_cast<TouchDrvFT6X36 *>(touchDrv);
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tmp->interruptTrigger();
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const char *model = touchDrv->getModelName();
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Serial.print("Successfully initialized "); Serial.print(model);
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Serial.print(",using "); Serial.print(model); Serial.println(" Driver!");
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return true;
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}
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delete touchDrv;
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Serial.println("Unable to find touch device.");
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touchDrv = NULL;
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return false;
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}
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void setup()
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{
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Serial.begin(115200);
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while (!Serial);
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Serial.println("Start!");
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#if (defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_STM32)) && !defined(ARDUINO_ARCH_MBED)
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Wire.setSCL(TOUCH_SCL);
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Wire.setSDA(TOUCH_SDA);
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Wire.begin();
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#elif defined(ARDUINO_ARCH_NRF52)
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Wire.setPins(TOUCH_SDA, TOUCH_SCL);
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Wire.begin();
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#elif defined(ARDUINO_ARCH_ESP32)
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Wire.begin(TOUCH_SDA, TOUCH_SCL);
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#else
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Wire.begin();
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#endif
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SensorWireHelper::dumpDevices(Wire);
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// Use unspecified address to test the address discovery function.
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// T-RGB XL9555 uses 0X20 device address
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if (!extension.begin(Wire, XL9555_UNKOWN_ADDRESS, TOUCH_SDA, TOUCH_SCL)) {
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Serial.println("Failed to find XL9555 - check your wiring!");
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while (1) {
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delay(1000);
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}
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}
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if (!setupTouchDrv()) {
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while (1) {
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delay(3000);
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}
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}
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}
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void loop()
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{
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if (touchDrv->isPressed()) {
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uint8_t touched = touchDrv->getPoint(x, y, touchDrv->getSupportTouchPoint());
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if (touched) {
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for (int i = 0; i < touched; ++i) {
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Serial.print("X[");
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Serial.print(i);
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Serial.print("]:");
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Serial.print(x[i]);
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Serial.print(" ");
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Serial.print(" Y[");
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Serial.print(i);
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Serial.print("]:");
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Serial.print(y[i]);
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Serial.print(" ");
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}
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Serial.println();
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}
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}
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delay(5);
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}
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