[Diao Ye learns programming] Arduino hands-on (153) --- 2.4-inch TFT LCD touch screen module 5

The reference to 37 sensors and actuators has been widely circulated on the Internet. In fact, there must be more than 37 sensor modules compatible with Arduino. In view of the fact that I have accumulated some sensor and actuator modules on hand, according to the concept of practice to get true knowledge (must be done), for the purpose of learning and communication, I am going to try a series of experiments one by one, regardless of success (the program goes through) or not, They will be recorded - small progress or unsolvable problems, hoping to inspire others.

[Arduino] 168 kinds of sensor module series experiments (data code + simulation programming + graphics programming)
Experiment 153: 2.4-inch TFT LCD touch screen color screen module can be directly plugged into UNO R3 Mega2560 development board

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[Arduino] 168 sensor module series experiments (data code + simulation programming + graphics programming)

Experiment 153: 2.4-inch TFT LCD touch screen color screen module TFT-LCD high-definition true color display

Project 12: Read the 16-bit or 8-bit value sequence of the register on the MCUFRIEND UNO shield

Experimental open source code:

/*

 【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

 实验一百五十三：2.4寸TFT液晶触摸屏 彩屏模块 TFT-LCD 高清真彩显示屏

 项目之十二：读取MCUFRIEND UNO shield上的寄存器16位或8位值序列

 模块直插，引脚用法如下：

 LCD_CS LCD_CD LCD_WR LCD_RD LCD_RST SD_SS SD_DI SD_DO SD_SCK

 Arduino Uno A3 A2 A1 A0 A4 10 11 12 13

 LCD_D0 LCD_D1 LCD_D2 LCD_D3 LCD_D4 LCD_D5 LCD_D6 LCD_D7

 Arduino Uno 8 9 2 3 4 5 6 7

*/

//Arduino UNO或Mega 2560作为扩展

#define LCD_RST A4

#define LCD_CS A3

#define LCD_RS A2

#define LCD_WR A1

#define LCD_RD A0

#define LCD_D0 8

#define LCD_D1 9

#define LCD_D2 2

#define LCD_D3 3

#define LCD_D4 4

#define LCD_D5 5

#define LCD_D6 6

#define LCD_D7 7

void setup(){
    
    

  Serial.begin(9600);

  while (!Serial) ;

  Serial.println("Read Registers on MCUFRIEND UNO shield");

  Serial.println("controllers either read as single 16-bit");

  Serial.println("e.g. the ID is at readReg(0)");

  Serial.println("or as a sequence of 8-bit values");

  Serial.println("in special locations (first is dummy)");

  Serial.println("");

  lcdInit();

  lcdReset();   //ensures that controller is in default state

//  for (uint16_t i = 0; i < 256; i++) readReg(i, 7, "f.k"); 

  readReg(0x00, 2, "ID: ILI9320, ILI9325, ILI9335, ...");

  readReg(0x04, 4, "Manufacturer ID");

  readReg(0x09, 5, "Status Register");

  readReg(0x0A, 2, "Get Power Mode");

  readReg(0x0C, 2, "Get Pixel Format");

  readReg(0x61, 2, "RDID1 HX8347-G");

  readReg(0x62, 2, "RDID2 HX8347-G");

  readReg(0x63, 2, "RDID3 HX8347-G");

  readReg(0x64, 2, "RDID1 HX8347-A");

  readReg(0x65, 2, "RDID2 HX8347-A");

  readReg(0x66, 2, "RDID3 HX8347-A");

  readReg(0x67, 2, "RDID Himax HX8347-A");

  readReg(0x70, 2, "Panel Himax HX8347-A");

  readReg(0xA1, 5, "RD_DDB SSD1963");

  readReg(0xB0, 2, "RGB Interface Signal Control");

  readReg(0xB4, 2, "Inversion Control");

  readReg(0xB6, 5, "Display Control");

  readReg(0xB7, 2, "Entry Mode Set");

  readReg(0xBF, 6, "ILI9481, HX8357-B");

  readReg(0xC0, 9, "Panel Control");

  readReg(0xC8, 13, "GAMMA");

  readReg(0xCC, 2, "Panel Control");

  readReg(0xD0, 3, "Power Control");

  readReg(0xD2, 5, "NVM Read");

  readReg(0xD3, 4, "ILI9341, ILI9488");

  readReg(0xD4, 4, "Novatek ID");

  readReg(0xDA, 2, "RDID1");

  readReg(0xDB, 2, "RDID2");

  readReg(0xDC, 2, "RDID3");

  readReg(0xE0, 16, "GAMMA-P");

  readReg(0xE1, 16, "GAMMA-N");

  readReg(0xEF, 6, "ILI9327");

  readReg(0xF2, 12, "Adjust Control 2");

  readReg(0xF6, 4, "Interface Control");

}

void loop() {
    
    

}

void printhex(uint8_t val){
    
    

  if (val < 0x10) Serial.print("0");

  Serial.print(val, HEX);

}

void readReg(uint16_t reg, uint8_t n, const char *msg){
    
    

  uint8_t val8;

  lcdReset();

  lcdSetWriteDir();

  lcdWriteCommand(0xB0);   //Command Access Protect

  lcdWriteData(0x00);    //looks wrong

/*

  lcdWriteCommand(0xF6);

  lcdWriteData(0x01);

  lcdWriteData(0x01);

  lcdWriteData(0x03);

*/

  lcdWriteCommand(reg);

  Serial.print("reg(0x");

  printhex(reg >> 8);

  printhex(reg);

  Serial.print(")");

  lcdSetReadDir();

  while (n--) {
    
    

    val8 = lcdReadData8();

    Serial.print(" ");

    printhex(val8);

  }

  lcdSetWriteDir();

  Serial.print("\t");

  Serial.println(msg);

}

void lcdInit(){
    
    

  pinMode(LCD_CS, OUTPUT);

  digitalWrite(LCD_CS, HIGH);

  pinMode(LCD_RS, OUTPUT);

  digitalWrite(LCD_RS, HIGH);

  pinMode(LCD_WR, OUTPUT);

  digitalWrite(LCD_WR, HIGH);

  pinMode(LCD_RD, OUTPUT);

  digitalWrite(LCD_RD, HIGH);

  pinMode(LCD_RST, OUTPUT);

  digitalWrite(LCD_RST, HIGH);

}

void lcdReset(){
    
    

  digitalWrite(LCD_RST, LOW);

  delay(2);

  digitalWrite(LCD_RST, HIGH);

  delay(10);       //允许控制器重新启动

}

void lcdWrite8(uint16_t data){
    
    

  digitalWrite(LCD_D0, data & 1);

  digitalWrite(LCD_D1, (data & 2) >> 1);

  digitalWrite(LCD_D2, (data & 4) >> 2);

  digitalWrite(LCD_D3, (data & 8) >> 3);

  digitalWrite(LCD_D4, (data & 16) >> 4);

  digitalWrite(LCD_D5, (data & 32) >> 5);

  digitalWrite(LCD_D6, (data & 64) >> 6);

  digitalWrite(LCD_D7, (data & 128) >> 7);

}

uint16_t lcdRead8(){
    
    

  uint16_t result = digitalRead(LCD_D7);

  result <<= 1;

  result |= digitalRead(LCD_D6);

  result <<= 1;

  result |= digitalRead(LCD_D5);

  result <<= 1;

  result |= digitalRead(LCD_D4);

  result <<= 1;

  result |= digitalRead(LCD_D3);

  result <<= 1;

  result |= digitalRead(LCD_D2);

  result <<= 1;

  result |= digitalRead(LCD_D1);

  result <<= 1;

  result |= digitalRead(LCD_D0);

  return result;

}

void lcdSetWriteDir(){
    
    

  pinMode(LCD_D0, OUTPUT);

  pinMode(LCD_D1, OUTPUT);

  pinMode(LCD_D2, OUTPUT);

  pinMode(LCD_D3, OUTPUT);

  pinMode(LCD_D4, OUTPUT);

  pinMode(LCD_D5, OUTPUT);

  pinMode(LCD_D6, OUTPUT);

  pinMode(LCD_D7, OUTPUT);

}

void lcdSetReadDir(){
    
    

  pinMode(LCD_D0, INPUT);

  pinMode(LCD_D1, INPUT);

  pinMode(LCD_D2, INPUT);

  pinMode(LCD_D3, INPUT);

  pinMode(LCD_D4, INPUT);

  pinMode(LCD_D5, INPUT);

  pinMode(LCD_D6, INPUT);

  pinMode(LCD_D7, INPUT);

}

void lcdWriteData(uint16_t data){
    
    

  lcdSetWriteDir();

  digitalWrite(LCD_CS, LOW);

  digitalWrite(LCD_RS, HIGH);

  digitalWrite(LCD_RD, HIGH);

  digitalWrite(LCD_WR, HIGH);

  lcdWrite8(data >> 8);

  digitalWrite(LCD_WR, LOW);

  delayMicroseconds(10);

  digitalWrite(LCD_WR, HIGH);

  lcdWrite8(data);

  digitalWrite(LCD_WR, LOW);

  delayMicroseconds(10);

  digitalWrite(LCD_WR, HIGH);

  digitalWrite(LCD_CS, HIGH);

}

void lcdWriteCommand(uint16_t command){
    
    

  lcdSetWriteDir();

  digitalWrite(LCD_CS, LOW);

  digitalWrite(LCD_RS, LOW);

  digitalWrite(LCD_RD, HIGH);

  digitalWrite(LCD_WR, HIGH);

  lcdWrite8(command >> 8);

  digitalWrite(LCD_WR, LOW);

  delayMicroseconds(10);

  digitalWrite(LCD_WR, HIGH);

  lcdWrite8(command);

  digitalWrite(LCD_WR, LOW);

  delayMicroseconds(10);

  digitalWrite(LCD_WR, HIGH);

  digitalWrite(LCD_CS, HIGH);

}

uint8_t lcdReadData8(){
    
    

  uint8_t result;

  lcdSetReadDir();

  digitalWrite(LCD_CS, LOW);

  digitalWrite(LCD_RS, HIGH);

  digitalWrite(LCD_RD, HIGH);

  digitalWrite(LCD_WR, HIGH);

  digitalWrite(LCD_RD, LOW);

  delayMicroseconds(10);

  result = lcdRead8();

  digitalWrite(LCD_RD, HIGH);

  delayMicroseconds(10);

  return result;

}

uint16_t lcdReadData16(){
    
    

  uint16_t result;

  result = lcdReadData8() << 8;

  result |= lcdReadData8();

  return result;

}

void lcdWriteRegister(uint16_t addr, uint16_t data){
    
    

  lcdWriteCommand(addr);

  lcdWriteData(data);

}

Experimental serial port return

insert image description here
[Arduino] 168 sensor module series experiments (data code + simulation programming + graphics programming)

Experiment 153: 2.4-inch TFT LCD touch screen color screen module TFT-LCD high-definition true color display

Item 13: Diagnose whether TFT supports this controller, and change the background to display strings on all sides

Experimental open source code

/*

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验一百五十三：2.4寸TFT液晶触摸屏 彩屏模块 TFT-LCD 高清真彩显示屏

 项目十三：诊断TFT是否支持此控制器,并换背景四面显示字符串

 模块直插，引脚用法如下：

 LCD_CS LCD_CD LCD_WR LCD_RD LCD_RST SD_SS SD_DI SD_DO SD_SCK

 Arduino Uno A3 A2 A1 A0 A4 10 11 12 13

 LCD_D0 LCD_D1 LCD_D2 LCD_D3 LCD_D4 LCD_D5 LCD_D6 LCD_D7

 Arduino Uno 8 9 2 3 4 5 6 7

*/

#include <MCUFRIEND_kbv.h>

MCUFRIEND_kbv tft;

// 为一些常见的16位颜色值指定可读的名称

#define BLACK  0x0000

#define BLUE  0x001F

#define RED   0xF800

#define GREEN  0x07E0

#define CYAN  0x07FF

#define MAGENTA 0xF81F

#define YELLOW 0xFFE0

#define WHITE  0xFFFF

#define GRAY  0x8410

uint16_t version = MCUFRIEND_KBV_H_;

void setup() {
    
    

 Serial.begin(9600);

 if (!Serial) delay(3000);  //给 Leonardo多留点时间

 uint16_t ID = tft.readID();

 Serial.println(F("Diagnose whether this controller is supported"));

 Serial.println(F("There are FAQs in extras/mcufriend_how_to.txt"));

 Serial.println(F(""));

 Serial.print(F("tft.readID() finds: ID = 0x"));

 Serial.println(ID, HEX);

 Serial.println(F(""));

 Serial.print(F("MCUFRIEND_kbv version: "));

 Serial.print(version / 100);

 Serial.print(F("."));

 Serial.print((version / 10) % 10);

 Serial.print(F("."));

 Serial.println(version % 10);

 Serial.println(F(""));

 if (ID == 0x0404) {
    
    

  Serial.println(F("Probably a write-only Mega2560 Shield"));

  Serial.println(F("#define USE_SPECIAL in mcufriend_shield.h"));

  Serial.println(F("#define appropriate SPECIAL in mcufriend_special.h"));

  Serial.println(F("e.g. USE_MEGA_16BIT_SHIELD"));

  Serial.println(F("e.g. USE_MEGA_8BIT_SHIELD"));

  Serial.println(F("Hint. A Mega2560 Shield has a 18x2 male header"));

  Serial.println(F("Often a row of resistor-packs near the 18x2"));

  Serial.println(F("RP1-RP7 implies 16-bit but it might be 8-bit"));

  Serial.println(F("RP1-RP4 or RP1-RP5 can only be 8-bit"));

 }

 if (ID == 0xD3D3) {
    
    

  uint16_t guess_ID = 0x9481; // write-only shield

  Serial.println(F("Probably a write-only Mega2560 Shield"));

  Serial.print(F("Try to force ID = 0x"));

  Serial.println(guess_ID, HEX);

  tft.begin(guess_ID);

 }

 else tft.begin(ID);

 Serial.println(F(""));

 if (tft.width() == 0) {
    
    

  Serial.println(F("This ID is not supported"));

  Serial.println(F("look up ID in extras/mcufriend_how_to.txt"));

  Serial.println(F("you may need to edit MCUFRIEND_kbv.cpp"));

  Serial.println(F("to enable support for this ID"));

  Serial.println(F("e.g. #define SUPPORT_8347D"));

  Serial.println(F(""));

  Serial.println(F("New controllers appear on Ebay often"));

  Serial.println(F("If your ID is not supported"));

  Serial.println(F("run LCD_ID_readreg.ino from examples/"));

  Serial.println(F("Copy-Paste the output from the Serial Terminal"));

  Serial.println(F("to a message in Displays topic on Arduino Forum"));

  Serial.println(F("or to Issues on GitHub"));

  Serial.println(F(""));

  Serial.println(F("Note that OPEN-SMART boards have diff pinout"));

  Serial.println(F("Edit the pin defines in LCD_ID_readreg to match"));

  Serial.println(F("Edit mcufiend_shield.h for USE_SPECIAL"));

  Serial.println(F("Edit mcufiend_special.h for USE_OPENSMART_SHIELD_PINOUT"));

  while (1);  //休止

 }

 else {
    
    

  Serial.print(F("PORTRAIT is "));

  Serial.print(tft.width());

  Serial.print(F(" x "));

  Serial.println(tft.height());

  Serial.println(F(""));

  Serial.println(F("Run the examples/graphictest_kbv sketch"));

  Serial.println(F("All colours, text, directions, rotations, scrolls"));

  Serial.println(F("should work. If there is a problem, make notes on paper"));

  Serial.println(F("Post accurate description of problem to Forum"));

  Serial.println(F("Or post a link to a video (or photos)"));

  Serial.println(F(""));

  Serial.println(F("I rely on good information from remote users"));

 }

}

void loop() {
    
    

 static uint8_t aspect = 0;

 const char *aspectname[] = {
    
    

  "PORTRAIT", "LANDSCAPE", "PORTRAIT_REV", "LANDSCAPE_REV"

 };

 const char *colorname[] = {
    
     "BLUE", "GREEN", "RED", "GRAY" };

 uint16_t colormask[] = {
    
     BLUE, GREEN, RED, GRAY };

 uint16_t ID = tft.readID(); //

 tft.setRotation(aspect);

 int width = tft.width();

 int height = tft.height();

 tft.fillScreen(colormask[aspect]);

 tft.drawRect(0, 0, width, height, WHITE);

 tft.drawRect(32, 32, width - 64, height - 64, WHITE);

 tft.setTextSize(2);

 tft.setTextColor(BLACK);

 tft.setCursor(40, 40);

 tft.print("ID=0x");

 tft.print(ID, HEX);

 if (ID == 0xD3D3) tft.print(" w/o");

 tft.setCursor(40, 70);

 tft.print(aspectname[aspect]);

 tft.setCursor(40, 100);

 tft.print(width);

 tft.print(" x ");

 tft.print(height);

 tft.setTextColor(WHITE);

 tft.setCursor(40, 130);

 tft.print(colorname[aspect]);

 tft.setCursor(40, 160);

 tft.setTextSize(1);

 tft.print("MCUFRIEND_KBV_H_ = ");

 tft.print(version);

 if (++aspect > 3) aspect = 0;

 delay(800);

}

Experimental serial port return

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Arduino experiment scene diagram

insert image description here
[Arduino] 168 sensor module series experiments (data code + simulation programming + graphics programming)

Experiment 153: 2.4-inch TFT LCD touch screen color screen module TFT-LCD high-definition true color display