initial commit

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

LICENSE

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+MIT License
+
+Copyright (c) 2023 Felix Biego
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/CST816D/CST816D.cpp

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+#include "CST816D.h"
+
+CST816D::CST816D(int8_t sda_pin, int8_t scl_pin, int8_t rst_pin, int8_t int_pin)
+{
+  _sda = sda_pin;
+  _scl = scl_pin;
+  _rst = rst_pin;
+  _int = int_pin;
+}
+
+void CST816D::begin(void)
+{
+  // Initialize I2C
+  if (_sda != -1 && _scl != -1)
+  {
+    Wire.begin(_sda, _scl);
+  }
+  else
+  {
+    Wire.begin();
+  }
+
+  // Int Pin Configuration
+  if (_int != -1)
+  {
+    pinMode(_int, OUTPUT);
+    digitalWrite(_int, HIGH); //高电平
+    delay(1);
+    digitalWrite(_int, LOW); //低电平
+    delay(1);
+  }
+
+  // Reset Pin Configuration
+  if (_rst != -1)
+  {
+    pinMode(_rst, OUTPUT);
+    digitalWrite(_rst, LOW);
+    delay(10);
+    digitalWrite(_rst, HIGH);
+    delay(300);
+  }
+
+  // Initialize Touch
+  i2c_write(0xFE, 0XFF); //禁止自动进入低功耗模式。
+}
+
+bool CST816D::getTouch(uint16_t *x, uint16_t *y, uint8_t *gesture)
+{
+  bool FingerIndex = false;
+  FingerIndex = (bool)i2c_read(0x02);
+
+  *gesture = i2c_read(0x01);
+  if (!(*gesture == SlideUp || *gesture == SlideDown))
+  {
+    *gesture = None;
+  }
+
+  uint8_t data[4];
+  i2c_read_continuous(0x03, data, 4);
+  *x = ((data[0] & 0x0f) << 8) | data[1];
+  *y = ((data[2] & 0x0f) << 8) | data[3];
+
+  //Flip X , if you x-axis is reversed,please uncomment the following code
+  //*x=240-*x;
+
+  return FingerIndex;
+}
+
+uint8_t CST816D::i2c_read(uint8_t addr)
+{
+  uint8_t rdData;
+  uint8_t rdDataCount;
+  do
+  {
+    Wire.beginTransmission(I2C_ADDR_CST816D);
+    Wire.write(addr);
+    Wire.endTransmission(false); // Restart
+    rdDataCount = Wire.requestFrom(I2C_ADDR_CST816D, 1);
+  } while (rdDataCount == 0);
+  while (Wire.available())
+  {
+    rdData = Wire.read();
+  }
+  return rdData;
+}
+
+uint8_t CST816D::i2c_read_continuous(uint8_t addr, uint8_t *data, uint32_t length)
+{
+  Wire.beginTransmission(I2C_ADDR_CST816D);
+  Wire.write(addr);
+  if ( Wire.endTransmission(true))return -1;
+  Wire.requestFrom(I2C_ADDR_CST816D, length);
+  for (int i = 0; i < length; i++) {
+    *data++ = Wire.read();
+  }
+  return 0;
+}
+
+void CST816D::i2c_write(uint8_t addr, uint8_t data)
+{
+  Wire.beginTransmission(I2C_ADDR_CST816D);
+  Wire.write(addr);
+  Wire.write(data);
+  Wire.endTransmission();
+}
+
+uint8_t CST816D::i2c_write_continuous(uint8_t addr, const uint8_t *data, uint32_t length)
+{
+  Wire.beginTransmission(I2C_ADDR_CST816D);
+  Wire.write(addr);
+  for (int i = 0; i < length; i++) {
+    Wire.write(*data++);
+  }
+  if ( Wire.endTransmission(true))return -1;
+  return 0;
+}

lib/CST816D/CST816D.h

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+#ifndef _CST816D_H
+#define _CST816D_H
+
+#include <Wire.h>
+
+#define I2C_ADDR_CST816D 0x15
+
+//手势
+enum GESTURE
+{
+    None = 0x00,       //无手势
+    SlideDown = 0x01,  //向下滑动
+    SlideUp = 0x02,    //向上滑动
+    SlideLeft = 0x03,  //向左滑动
+    SlideRight = 0x04, //向右滑动
+    SingleTap = 0x05,  //单击
+    DoubleTap = 0x0B,  //双击
+    LongPress = 0x0C   //长按
+};
+
+/**************************************************************************/
+/*!
+    @brief  CST816D I2C CTP controller driver
+*/
+/**************************************************************************/
+class CST816D
+{
+public:
+    CST816D(int8_t sda_pin = -1, int8_t scl_pin = -1, int8_t rst_pin = -1, int8_t int_pin = -1);
+
+    void begin(void);
+    bool getTouch(uint16_t *x, uint16_t *y, uint8_t *gesture);
+
+private:
+    int8_t _sda, _scl, _rst, _int;
+
+    uint8_t i2c_read(uint8_t addr);
+    uint8_t i2c_read_continuous(uint8_t addr, uint8_t *data, uint32_t length);
+    void i2c_write(uint8_t addr, uint8_t data);
+    uint8_t i2c_write_continuous(uint8_t addr, const uint8_t *data, uint32_t length);
+};
+#endif

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html