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我正在尝试使用HiLetgo ESP8266 12-E和ILI9341 LCD 触摸屏创建一个简单的开/关触摸屏对接。

我已按如下方式连接电路板：

ILI9341 <--> ESP8266

  • SDD/味噌 <--> D6
  • LED <--> 3.3V
  • SCK <--> D5
  • SDI/MOSI <--> D7
  • T_CS <--> D8触控片选？
  • DC/RS <--> D1
  • 复位 <--> 3.3V
  • CS <--> D2
  • 接地 <--> 接地
  • VCC <--> 3.3V

我正在使用 Adafruit 库和使用 Arduino IDE 的示例 Adafruit ONOFFBUTTON 示例。我的代码如下所示：

//This example implements a simple sliding On/Off button. The example
// demonstrates drawing and touch operations.
//
//Thanks to Adafruit forums member Asteroid for the original sketch!
//
#include <Adafruit_GFX.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_ILI9341.h>
#include <Adafruit_STMPE610.h>

// This is calibration data for the raw touch data to the screen coordinates
#define TS_MINX 150
#define TS_MINY 130
#define TS_MAXX 3800
#define TS_MAXY 4000

#define STMPE_CS D8
Adafruit_STMPE610 ts = Adafruit_STMPE610(STMPE_CS);
#define TFT_CS D2
#define TFT_DC D1
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

boolean RecordOn = false;

#define FRAME_X 210
#define FRAME_Y 180
#define FRAME_W 100
#define FRAME_H 50

#define REDBUTTON_X FRAME_X
#define REDBUTTON_Y FRAME_Y
#define REDBUTTON_W (FRAME_W/2)
#define REDBUTTON_H FRAME_H

#define GREENBUTTON_X (REDBUTTON_X + REDBUTTON_W)
#define GREENBUTTON_Y FRAME_Y
#define GREENBUTTON_W (FRAME_W/2)
#define GREENBUTTON_H FRAME_H

void drawFrame()
{
  tft.drawRect(FRAME_X, FRAME_Y, FRAME_W, FRAME_H, ILI9341_BLACK);
}

void redBtn()
{ 
  tft.fillRect(REDBUTTON_X, REDBUTTON_Y, REDBUTTON_W, REDBUTTON_H, ILI9341_RED);
  tft.fillRect(GREENBUTTON_X, GREENBUTTON_Y, GREENBUTTON_W, GREENBUTTON_H, ILI9341_BLUE);
  drawFrame();
  tft.setCursor(GREENBUTTON_X + 6 , GREENBUTTON_Y + (GREENBUTTON_H/2));
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println("ON");
  RecordOn = false;
}

void greenBtn()
{
  tft.fillRect(GREENBUTTON_X, GREENBUTTON_Y, GREENBUTTON_W, GREENBUTTON_H, ILI9341_GREEN);
  tft.fillRect(REDBUTTON_X, REDBUTTON_Y, REDBUTTON_W, REDBUTTON_H, ILI9341_BLUE);
  drawFrame();
  tft.setCursor(REDBUTTON_X + 6 , REDBUTTON_Y + (REDBUTTON_H/2));
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println("OFF");
  RecordOn = true;
}

void setup(void)
{
  SPI.setMOSI(7);
  SPI.setSCK(14);

  Serial.begin(74880);
  tft.begin();
  if (!ts.begin()) { 
    Serial.println("Unable to start touchscreen.");
  } 
  else { 
    Serial.println("Touchscreen started."); 
  }

  tft.fillScreen(ILI9341_BLUE);
  // origin = left,top landscape (USB left upper)
  tft.setRotation(1); 
  redBtn();
}

void loop()
{
  // See if there's any  touch data for us
  if (!ts.bufferEmpty())
  {   
    // Retrieve a point  
    TS_Point p = ts.getPoint(); 
    // Scale using the calibration #'s
    // and rotate coordinate system
    p.x = map(p.x, TS_MINY, TS_MAXY, 0, tft.height());
    p.y = map(p.y, TS_MINX, TS_MAXX, 0, tft.width());
    int y = tft.height() - p.x;
    int x = p.y;

    if (RecordOn)
    {
      if((x > REDBUTTON_X) && (x < (REDBUTTON_X + REDBUTTON_W))) {
        if ((y > REDBUTTON_Y) && (y <= (REDBUTTON_Y + REDBUTTON_H))) {
          Serial.println("Red btn hit"); 
          redBtn();
        }
      }
    }
    else //Record is off (RecordOn == false)
    {
      if((x > GREENBUTTON_X) && (x < (GREENBUTTON_X + GREENBUTTON_W))) {
        if ((y > GREENBUTTON_Y) && (y <= (GREENBUTTON_Y + GREENBUTTON_H))) {
          Serial.println("Green btn hit"); 
          greenBtn();
        }
      }
    }

    Serial.println(RecordOn);
  }  
}

我在网上找不到很多使用 ESP8266 和 ILI9341 触摸屏的示例或文档。我正在寻找

  1. 验证我是否正确连接了该死的东西
  2. 根据需要修改代码以反映所使用的引脚，并使触摸按钮正常工作

非常感谢您花时间阅读本文。非常感谢您的帮助！

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1 回答 1

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我正在尝试使用 HiLetgo ESP8266 12-E 和ILI9341 LCD 触摸屏创建一个简单的开/关触摸屏对接。

编辑 - 我找到了一个解决方案
，基于从nailbuster 的博客中获取的信息。

接线板如下：

ILI9341 <--> ESP8266
T_IRQ <--> GPIO16
T_DO, SODI (MISO) <---> GPIO12
T_DIN, SDI (MOSI) <---> GPIO13
T_CS <--> GPIO4
T_CLK, SCK <--> GPIO14
LED, RESET, VCC <--> 3.3V
D/C <--> GPI02
CS <--> GPIO15
GND <--> GND

有些电线在同一个通道上。

这是工作示例代码，Nailbuster 的 XTPPaint 的修改版本

#include <Arduino.h>
#include <SPI.h>

#include <Adafruit_ILI9341esp.h>
#include <Adafruit_GFX.h>
#include <XPT2046.h>

// Modify the following two lines to match your hardware
// Also, update calibration parameters below, as necessary
// For the esp shield, these are the default.
#define TFT_DC 2
#define TFT_CS 15

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
XPT2046 touch(/*cs=*/ 4, /*irq=*/ 5);

Adafruit_GFX_Button button;

void setup() {
  delay(1000);

  Serial.begin(115200);
  SPI.setFrequency(ESP_SPI_FREQ);

  tft.begin();
  touch.begin(tft.width(), tft.height());  // Must be done before setting rotation
  Serial.print("tftx ="); Serial.print(tft.width()); Serial.print(" tfty ="); Serial.println(tft.height());
  tft.fillScreen(ILI9341_BLACK);

  // Replace these for your screen module
  touch.setCalibration(209, 1759, 1775, 273);
  button.initButton(&tft, 0, 0, 70, 40, ILI9341_DARKCYAN, ILI9341_BLUE, ILI9341_GREENYELLOW, "BUTTON", 2);
  button.drawButton();

}

static uint16_t prev_x = 0xffff, prev_y = 0xffff;

void loop() {
    uint16_t x, y;
  if (touch.isTouching()) {
    touch.getPosition(x, y);
//  Serial.print("x ="); Serial.print(x); Serial.print(" y ="); Serial.println(y);

    prev_x = x;
    prev_y = y;
  } else {
    prev_x = prev_y = 0xffff;
  }


  button.press(button.contains(x, y)); // tell the button it is pressed


// now we can ask the buttons if their state has changed
    if (button.justReleased()) {
        button.drawButton(); // draw normal
   // do work here
    }

    if (button.justPressed()) {
        button.drawButton(true); // draw invert!
    }

  delay(20);
}

我希望这可以为将来遇到此问题的任何人提供有用的参考

于 2016-12-13T04:54:54.130 回答