简介

点亮该屏幕的笔记,既然都能显示了，肯定要获取触摸位置啊，从实物图中可知该屏幕的触摸IC为XPT2046

Arduino IDE需配置esp32开发环境
开发板：ESP 32

触摸过程

这里实现的是触摸屏幕获取坐标

IO映射

TFT LCD	ESP32
VCC	3V3
GND	GND
CS	P5
RESET	P4
DC	P17
MOSI	P23
SCK	P18
LED	VIN(最好加一个电阻)
MISO	P19
触摸接口	触摸接口
T_CLK	P18
T_CS	P5
T_DIN	P23
T_DO	P19
T_IRQ	P21

这里可以看到复用部分接口，灵感来自于太极创客的一个视频（参考3）

代码

需要从库管理器下载的库：XPT2046_Touchscreen
工具-开发板- ESP32 Arduino - NodeMCU-32s

#include <XPT2046_Touchscreen.h>
#include <SPI.h>#define CS_PIN  8
// MOSI=11, MISO=12, SCK=13#define TIRQ_PIN  2
XPT2046_Touchscreen ts(5, 21);
void setup() {Serial.begin(9600);ts.begin();ts.setRotation(1);while (!Serial && (millis() <= 1000));
}int x = 0;
int y = 0;void loop() {if (ts.touched()) {TS_Point p = ts.getPoint();if(x != p.x || y != p.y) //过滤重复的点位{Serial.print("Pressure = ");  //按压的力度大小Serial.print(p.z);Serial.print(", x = ");      //坐标的x值Serial.print(p.x);Serial.print(", y = ");     //坐标的y值Serial.print(p.y);Serial.println();} x=p.x;y=p.y;delay(30);}
}

效果

指尖触摸屏幕，可以在串口监视器中看到一下内容

总结

或是是因为XPT2046过于廉价，获取到的触摸数据emmm，不堪入目，也可能是我没有校准???如何校准哦。。人傻了

花式点亮屏幕

这里不涉及触摸，但点亮的方式挺炫酷的

IO映射

TFT LCD	ESP32
VCC	3V3
GND	GND
CS	P5
RESET	P4
DC	P17
MOSI	P23
SCK	P18
LED	VIN(最好加一个电阻)
MISO	P19（非必需，可以不接）

代码

需要下载库：Adafruit_ILI9341

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO);
Adafruit_ILI9341 tft = Adafruit_ILI9341(5, 17, 23, 18, 4, 19);    //esp32-nodemcu32svoid setup() {Serial.begin(9600);Serial.println("ILI9341 Test!"); tft.begin();// read diagnostics (optional but can help debug problems)uint8_t x = tft.readcommand8(ILI9341_RDMODE);Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);x = tft.readcommand8(ILI9341_RDMADCTL);Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);x = tft.readcommand8(ILI9341_RDPIXFMT);Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);x = tft.readcommand8(ILI9341_RDIMGFMT);Serial.print("Image Format: 0x"); Serial.println(x, HEX);x = tft.readcommand8(ILI9341_RDSELFDIAG);Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX); Serial.println(F("Benchmark                Time (microseconds)"));delay(10);Serial.print(F("Screen fill              "));Serial.println(testFillScreen());delay(500);Serial.print(F("Text                     "));Serial.println(testText());delay(3000);Serial.print(F("Lines                    "));Serial.println(testLines(ILI9341_CYAN));delay(500);Serial.print(F("Horiz/Vert Lines         "));Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));delay(500);Serial.print(F("Rectangles (outline)     "));Serial.println(testRects(ILI9341_GREEN));delay(500);Serial.print(F("Rectangles (filled)      "));Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));delay(500);Serial.print(F("Circles (filled)         "));Serial.println(testFilledCircles(10, ILI9341_MAGENTA));Serial.print(F("Circles (outline)        "));Serial.println(testCircles(10, ILI9341_WHITE));delay(500);Serial.print(F("Triangles (outline)      "));Serial.println(testTriangles());delay(500);Serial.print(F("Triangles (filled)       "));Serial.println(testFilledTriangles());delay(500);Serial.print(F("Rounded rects (outline)  "));Serial.println(testRoundRects());delay(500);Serial.print(F("Rounded rects (filled)   "));Serial.println(testFilledRoundRects());delay(500);Serial.println(F("Done!"));}void loop(void) {for(uint8_t rotation=0; rotation<4; rotation++) {tft.setRotation(rotation);testText();delay(1000);}
}unsigned long testFillScreen() {unsigned long start = micros();tft.fillScreen(ILI9341_BLACK);yield();tft.fillScreen(ILI9341_RED);yield();tft.fillScreen(ILI9341_GREEN);yield();tft.fillScreen(ILI9341_BLUE);yield();tft.fillScreen(ILI9341_BLACK);yield();return micros() - start;
}unsigned long testText() {tft.fillScreen(ILI9341_BLACK);unsigned long start = micros();tft.setCursor(0, 0);tft.setTextColor(ILI9341_WHITE);  tft.setTextSize(1);tft.println("Hello World!");tft.setTextColor(ILI9341_YELLOW); tft.setTextSize(2);tft.println(1234.56);tft.setTextColor(ILI9341_RED);    tft.setTextSize(3);tft.println(0xDEADBEEF, HEX);tft.println();tft.setTextColor(ILI9341_GREEN);tft.setTextSize(5);tft.println("Groop");tft.setTextSize(2);tft.println("I implore thee,");tft.setTextSize(1);tft.println("my foonting turlingdromes.");tft.println("And hooptiously drangle me");tft.println("with crinkly bindlewurdles,");tft.println("Or I will rend thee");tft.println("in the gobberwarts");tft.println("with my blurglecruncheon,");tft.println("see if I don't!");return micros() - start;
}unsigned long testLines(uint16_t color) {unsigned long start, t;int           x1, y1, x2, y2,w = tft.width(),h = tft.height();tft.fillScreen(ILI9341_BLACK);yield();x1 = y1 = 0;y2    = h - 1;start = micros();for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);x2    = w - 1;for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);t     = micros() - start; // fillScreen doesn't count against timingyield();tft.fillScreen(ILI9341_BLACK);yield();x1    = w - 1;y1    = 0;y2    = h - 1;start = micros();for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);x2    = 0;for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);t    += micros() - start;yield();tft.fillScreen(ILI9341_BLACK);yield();x1    = 0;y1    = h - 1;y2    = 0;start = micros();for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);x2    = w - 1;for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);t    += micros() - start;yield();tft.fillScreen(ILI9341_BLACK);yield();x1    = w - 1;y1    = h - 1;y2    = 0;start = micros();for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);x2    = 0;for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);yield();return micros() - start;
}unsigned long testFastLines(uint16_t color1, uint16_t color2) {unsigned long start;int           x, y, w = tft.width(), h = tft.height();tft.fillScreen(ILI9341_BLACK);start = micros();for(y=0; y<h; y+=5) tft.drawFastHLine(0, y, w, color1);for(x=0; x<w; x+=5) tft.drawFastVLine(x, 0, h, color2);return micros() - start;
}unsigned long testRects(uint16_t color) {unsigned long start;int           n, i, i2,cx = tft.width()  / 2,cy = tft.height() / 2;tft.fillScreen(ILI9341_BLACK);n     = min(tft.width(), tft.height());start = micros();for(i=2; i<n; i+=6) {i2 = i / 2;tft.drawRect(cx-i2, cy-i2, i, i, color);}return micros() - start;
}unsigned long testFilledRects(uint16_t color1, uint16_t color2) {unsigned long start, t = 0;int           n, i, i2,cx = tft.width()  / 2 - 1,cy = tft.height() / 2 - 1;tft.fillScreen(ILI9341_BLACK);n = min(tft.width(), tft.height());for(i=n; i>0; i-=6) {i2    = i / 2;start = micros();tft.fillRect(cx-i2, cy-i2, i, i, color1);t    += micros() - start;tft.drawRect(cx-i2, cy-i2, i, i, color2);yield();}return t;
}unsigned long testFilledCircles(uint8_t radius, uint16_t color) {unsigned long start;int x, y, w = tft.width(), h = tft.height(), r2 = radius * 2;tft.fillScreen(ILI9341_BLACK);start = micros();for(x=radius; x<w; x+=r2) {for(y=radius; y<h; y+=r2) {tft.fillCircle(x, y, radius, color);}}return micros() - start;
}unsigned long testCircles(uint8_t radius, uint16_t color) {unsigned long start;int           x, y, r2 = radius * 2,w = tft.width()  + radius,h = tft.height() + radius;start = micros();for(x=0; x<w; x+=r2) {for(y=0; y<h; y+=r2) {tft.drawCircle(x, y, radius, color);}}return micros() - start;
}unsigned long testTriangles() {unsigned long start;int           n, i, cx = tft.width()  / 2 - 1,cy = tft.height() / 2 - 1;tft.fillScreen(ILI9341_BLACK);n     = min(cx, cy);start = micros();for(i=0; i<n; i+=5) {tft.drawTriangle(cx    , cy - i, // peakcx - i, cy + i, // bottom leftcx + i, cy + i, // bottom righttft.color565(i, i, i));}return micros() - start;
}unsigned long testFilledTriangles() {unsigned long start, t = 0;int           i, cx = tft.width()  / 2 - 1,cy = tft.height() / 2 - 1;tft.fillScreen(ILI9341_BLACK);start = micros();for(i=min(cx,cy); i>10; i-=5) {start = micros();tft.fillTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,tft.color565(0, i*10, i*10));t += micros() - start;tft.drawTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,tft.color565(i*10, i*10, 0));yield();}return t;
}unsigned long testRoundRects() {unsigned long start;int           w, i, i2,cx = tft.width()  / 2 - 1,cy = tft.height() / 2 - 1;tft.fillScreen(ILI9341_BLACK);w     = min(tft.width(), tft.height());start = micros();for(i=0; i<w; i+=6) {i2 = i / 2;tft.drawRoundRect(cx-i2, cy-i2, i, i, i/8, tft.color565(i, 0, 0));}return micros() - start;
}unsigned long testFilledRoundRects() {unsigned long start;int           i, i2,cx = tft.width()  / 2 - 1,cy = tft.height() / 2 - 1;tft.fillScreen(ILI9341_BLACK);start = micros();for(i=min(tft.width(), tft.height()); i>20; i-=6) {i2 = i / 2;tft.fillRoundRect(cx-i2, cy-i2, i, i, i/8, tft.color565(0, i, 0));yield();}return micros() - start;
}

效果

参考

点亮TFT LCD屏幕_ILI9341_SPI_240x320 https://blog.csdn.net/weixin_43031092/article/details/108007481
数据手册 http://www.lcdwiki.com/zh/2.8inch_SPI_Module_ILI9341_SKU:MSP2807
太极创客 https://www.bilibili.com/video/BV1C4411Z7pS?t=76
配置esp32开发环境 https://blog.csdn.net/weixin_43031092/article/details/106860485
ESP32管脚 https://blog.csdn.net/weixin_43031092/article/details/108158407

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用ESP学习单片机之Arduino_Esp-32s获取2.8‘‘TFT LCD屏幕的触摸数据_ILI9341_SPI_XPT2046

简介

触摸过程

IO映射

代码

效果

总结

花式点亮屏幕

IO映射

代码

效果

参考

用ESP学习单片机之Arduino_Esp-32s获取2.8‘‘TFT LCD屏幕的触摸数据_ILI9341_SPI_XPT2046相关推荐

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