ESP32与TFT引脚接线对照表：
找到TFT_eSPI库文件下的User_Setup.h
#define ST7735_DRIVER // Define additional parameters below for this display#define TFT_RGB_ORDER TFT_BGR // Colour order Blue-Green-Red#define TFT_WIDTH 128#define TFT_HEIGHT 128
#define ST7735_GREENTAB3#define TFT_MOSI 23 // In some display driver board, it might be written as "SDA" and so on.#define TFT_MISO 19#define TFT_SCLK 18#define TFT_CS 27 // Chip select control pin#define TFT_DC 25 // Data Command control pin#define TFT_RST 26 // Reset pin (could connect to Arduino RESET pin)
#define SPI_FREQUENCY 27000000#define SPI_READ_FREQUENCY 20000000#define SPI_TOUCH_FREQUENCY 2500000
#include//导入库 #includeTFT_eSPI tft = TFT_eSPI();void setup() {// put your setup code here, to run once:tft.init(); //初始化tft.fillScreen(TFT_BLACK); //屏幕颜色tft.setCursor(10, 10, 1); //设置起始坐标(10, 10)，2 号字体tft.setTextColor(TFT_BLUE); //设置文本颜色为蓝色tft.setTextSize(2); //设置文字的大小 (1~7)tft.fillCircle(20,20,10,TFT_YELLOW); //画圆tft.drawLine(10,50, 118, 50, TFT_WHITE); //画线tft.drawPixel(70,70,TFT_RED); //画点tft.setTextColor(TFT_WHITE,TFT_BLACK); //设置文字颜色和背景颜色tft.setCursor(10, 80, 1); //设置起始坐标(10, 80)，2 号字体tft.println("DQ"); //显示文字}void loop() {// put your main code here, to run repeatedly:}
const unsigned char hz_Wed PROGMEM[] ={0x00,0x00,0x00,0x00,0x7F,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFE,0x00,0x00,0x00,0x00/*"三",1*/};const unsigned char hz_ha PROGMEM[] ={0x00,0x40,0x00,0x40,0x78,0xA0,0x49,0x10,0x4A,0x08,0x4C,0x06,0x4B,0xF8,0x48,0x00,0x48,0x00,0x4B,0xF8,0x7A,0x08,0x4A,0x08,0x02,0x08,0x02,0x08,0x03,0xF8,0x02,0x08};/*"哈",0*/const unsigned char hz_er PROGMEM[] ={0x08,0x00,0x08,0x00,0x08,0x00,0x1F,0xFC,0x10,0x04,0x21,0x08,0x41,0x00,0x81,0x00,0x01,0x00,0x11,0x10,0x11,0x08,0x21,0x04,0x41,0x02,0x81,0x02,0x05,0x00,0x02,0x00};/*"尔",0*/const unsigned char hz_bin PROGMEM[] ={0x00,0x80,0x20,0x40,0x17,0xFE,0x14,0x02,0x88,0x14,0x43,0xE0,0x4A,0x00,0x0A,0x00,0x13,0xFC,0x12,0x10,0xE2,0x10,0x2F,0xFE,0x20,0x00,0x21,0x10,0x22,0x08,0x04,0x04};/*"滨",0*/struct FNT_HZ // 汉字字模数据结构{char Index[4]; // 汉字内码索引,存放内码,如"中",在UTF-8编码下，每个汉字占3个字节，第四个是结束符0const unsigned char* hz_Id; // 点阵码数据 存放内码后对应的 点阵序列 每个字需要32个字节的点阵序列unsigned char hz_width;};PROGMEM const FNT_HZ hanzi[] ={{"三", hz_Wed,16}, {"哈",hz_ha,16}, {"尔", hz_er, 16},{"滨", hz_bin, 16},};
TFT_eSPI tft = TFT_eSPI();void setup() {// put your setup code here, to run once:tft.init(); //初始化tft.fillScreen(TFT_BLACK); //屏幕颜色tft.setCursor(10, 10, 1); //设置起始坐标(10, 10)，2 号字体tft.setTextColor(TFT_BLUE); //设置文本颜色为蓝色tft.setTextSize(2); //设置文字的大小 (1~7)tft.fillCircle(20,20,10,TFT_YELLOW); //画圆tft.drawLine(10,50, 118, 50, TFT_WHITE); //画线tft.drawPixel(70,70,TFT_RED); //画点tft.setTextColor(TFT_WHITE,TFT_BLACK); //设置文字颜色和背景颜色tft.setCursor(10, 80, 1); //设置起始坐标(10, 80)，2 号字体tft.println("DQ"); //显示文字showMyFont(75, 100, TFT_BLUE);}void loop() {// put your main code here, to run repeatedly:}/*******************单个汉字显示****************/void showMyFont(int32_t x, int32_t y, uint32_t color) {int k = 0;tft.drawBitmap(x, y, hanzi[k].hz_Id, hanzi[k].hz_width, 16, color);}
TFT_eSPI tft = TFT_eSPI();void setup() {// put your setup code here, to run once:tft.init(); //初始化tft.fillScreen(TFT_BLACK); //屏幕颜色tft.setCursor(10, 10, 1); //设置起始坐标(10, 10)，2 号字体tft.setTextColor(TFT_BLUE); //设置文本颜色为蓝色tft.setTextSize(2); //设置文字的大小 (1~7)tft.fillCircle(20,20,10,TFT_YELLOW); //画圆tft.drawLine(10,50, 118, 50, TFT_WHITE); //画线tft.drawPixel(70,70,TFT_RED); //画点tft.setTextColor(TFT_WHITE,TFT_BLACK); //设置文字颜色和背景颜色tft.setCursor(10, 80, 1); //设置起始坐标(10, 80)，2 号字体tft.println("DQ"); //显示文字/*******************多个汉字显示****************/showMyFonts(35, 100, "哈尔滨", TFT_WHITE);}void loop() {// put your main code here, to run repeatedly:}void showMyFont(int32_t x, int32_t y, const char c[3], uint32_t color) {for (int k = 0; k < 4; k++)// 根据字库的字数调节循环的次数if (hanzi[k].Index[0] == c[0] && hanzi[k].Index[1] == c[1] && hanzi[k].Index[2] == c[2]){ tft.drawBitmap(x, y, hanzi[k].hz_Id, hanzi[k].hz_width, 16, color);}}void showMyFonts(int32_t x, int32_t y, const char str[], uint32_t color) { //显示整句汉字，字库比较简单，上下、左右输出是在函数内实现int x0 = x;for (int i = 0; i < strlen(str); i += 3) {showMyFont(x0, y, str+i, color);x0 += 17;}}
tft.init(); tft 初始化tft.fillScreen(Color); color 可用内置的也可以自己设置屏幕颜色tft.setCursor(X, Y, L); 设置起始坐标(X, Y)，L号字体 L:0~6tft.setTextColor(Color); 设置文本颜色tft.setTextSize(S); 设置文字的大小 S:(1~7)tft.println(Str); 显示文字字符串，仅可显示英文字符tft.fillCircle(X,Y,R,Color); 画圆 以(X，Y)为圆心，R为半径。tft.drawLine(X1,Y1, X2, Y2, Color); 画线，起点（X1，Y1），终点（X2，Y2）。tft.drawPixel(X,Y,Color); 画点 （X，Y）tft.setTextColor(fg,bg); 设置文字颜色fg和背景颜色bg。
