TFT 一般指薄膜晶體管。 薄膜晶體管（Thin Film Transistor，簡稱TFT）是一種器件。
1.屏幕規(guī)格
ZJY154T-PG04厚.pdf
ST7789VW芯片手冊.pdf
(見資料下載處)
2.原理圖
ST7789屏幕驅(qū)動電路圖
3.程序?qū)崿F(xiàn)
3.1引腳定義
參考：ESP32 入門筆記01：樂鑫ESP32-DevKitC開發(fā)板信息、開發(fā)環(huán)境搭建以及學資料準備
3.2Adafruit_GFX / Arduino_ST7789版
/***************************************************
1.3TFT ST7789 IPS SPI display.
接線
TFT_DC 15
TFT_RST 17
TFT_SDA 23
TFT_SCL 18
GND
VCC 5V/3.3V 都行
BLK 不用接
****************************************************/
#include <Adafruit_GFX.h> // Core graphics library by Adafruit
#include <Arduino_ST7789.h> // Hardware-specific library for ST7789 (with or without CS pin)
#include <SPI.h>
#define TFT_DC 15
#define TFT_RST 17
#define TFT_CS 4 // only for displays with CS pin
#define TFT_MOSI 23 // for hardware SPI data pin (all of available pins)
#define TFT_SCLK 18 // for hardware SPI sclk pin (all of available pins)
//You can use different type of hardware initialization
//using hardware SPI (11, 13 on UNO; 51, 52 on MEGA; ICSP-4, ICSP-3 on DUE and etc)
//Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST); //for display without CS pin
//Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST, TFT_CS); //for display with CS pin
//or you can use software SPI on all available pins (slow)
Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK); //for display without CS pin
//Arduino_ST7789 tft = Arduino_ST7789(TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_CS); //for display with CS pin
float p = 3.1415926;
void setup(void) {
Serial.begin(9600);
Serial.print("Hello! ST7789 TFT Test");
tft.init(240, 240); // initialize a ST7789 chip, 240x240 pixels
Serial.println("Initialized");
/*9uint16_t time = millis();
tft.fillScreen(BLACK);
time = millis() - time;
/*Serial.println(time, DEC);
delay(500);
// large block of text
tft.fillScreen(BLACK);
testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", WHITE);
delay(1000);
// tft print function
tftPrintTest();
delay(4000);
// a single pixel
tft.drawPixel(tft.width()/2, tft.height()/2, GREEN);
delay(500);
// line draw test
testlines(YELLOW);
delay(500);
// optimized lines
testfastlines(RED, BLUE);
delay(500);
testdrawrects(GREEN);
delay(500);
testfillrects(YELLOW, MAGENTA);
delay(500);
tft.fillScreen(BLACK);
testfillcircles(10, BLUE);
testdrawcircles(10, WHITE);
delay(500);
testroundrects();
delay(500);
testtriangles();
delay(500);*/
/*mediabuttons();
delay(500);
Serial.println("done");
delay(1000);*/
}
void loop() {
//tft.fillScreen(BLACK);
testfillcircles(10, BLUE);
testdrawcircles(10, WHITE);
testfillrects(YELLOW, MAGENTA);
delay(500);
tft.invertDisplay(true);
delay(500);
tft.invertDisplay(false);
delay(500);
tftPrintTest();
delay(500);
mediabuttons();
delay(500);
}
void testlines(uint16_t color) {
tft.fillScreen(BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(0, 0, x, tft.height()-1, color);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(0, 0, tft.width()-1, y, color);
}
tft.fillScreen(BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(tft.width()-1, 0, 0, y, color);
}
tft.fillScreen(BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(0, tft.height()-1, x, 0, color);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
}
tft.fillScreen(BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
}
for (int16_t y=0; y < tft.height(); y+=6) {
tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
}
}
void testdrawtext(char *text, uint16_t color) {
tft.setCursor(0, 0);
tft.setTextColor(color);
tft.setTextWrap(true);
tft.print(text);
}
void testfastlines(uint16_t color1, uint16_t color2) {
tft.fillScreen(BLACK);
for (int16_t y=0; y < tft.height(); y+=5) {
tft.drawFastHLine(0, y, tft.width(), color1);
}
for (int16_t x=0; x < tft.width(); x+=5) {
tft.drawFastVLine(x, 0, tft.height(), color2);
}
}
void testdrawrects(uint16_t color) {
tft.fillScreen(BLACK);
for (int16_t x=0; x < tft.width(); x+=6) {
tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
}
}
void testfillrects(uint16_t color1, uint16_t color2) {
tft.fillScreen(BLACK);
for (int16_t x=tft.width()-1; x > 6; x-=6) {
tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
}
}
void testfillcircles(uint8_t radius, uint16_t color) {
for (int16_t x=radius; x < tft.width(); x+=radius*2) {
for (int16_t y=radius; y < tft.height(); y+=radius*2) {
tft.fillCircle(x, y, radius, color);
}
}
}
void testdrawcircles(uint8_t radius, uint16_t color) {
for (int16_t x=0; x < tft.width()+radius; x+=radius*2) {
for (int16_t y=0; y < tft.height()+radius; y+=radius*2) {
tft.drawCircle(x, y, radius, color);
}
}
}
void testtriangles() {
tft.fillScreen(BLACK);
int color = 0xF800;
int t;
int w = tft.width()/2;
int x = tft.height()-1;
int y = 0;
int z = tft.width();
for(t = 0 ; t <= 15; t++) {
tft.drawTriangle(w, y, y, x, z, x, color);
x-=4;
y+=4;
z-=4;
color+=100;
}
}
void testroundrects() {
tft.fillScreen(BLACK);
int color = 100;
int i;
int t;
for(t = 0 ; t <= 4; t+=1) {
int x = 0;
int y = 0;
int w = tft.width()-2;
int h = tft.height()-2;
for(i = 0 ; i <= 16; i+=1) {
tft.drawRoundRect(x, y, w, h, 5, color);
x+=2;
y+=3;
w-=4;
h-=6;
color+=1100;
}
color+=100;
}
}
void tftPrintTest() {
tft.setTextWrap(false);
tft.fillScreen(BLACK);
tft.setCursor(0, 30);
tft.setTextColor(RED);
tft.setTextSize(1);
tft.println("Hello World!");
tft.setTextColor(YELLOW);
tft.setTextSize(2);
tft.println("Hello World!");
tft.setTextColor(GREEN);
tft.setTextSize(3);
tft.println("Hello World!");
tft.setTextColor(BLUE);
tft.setTextSize(4);
tft.print(1234.567);
delay(1500);
tft.setCursor(0, 0);
tft.fillScreen(BLACK);
tft.setTextColor(WHITE);
tft.setTextSize(0);
tft.println("Hello World!");
tft.setTextSize(1);
tft.setTextColor(GREEN);
tft.print(p, 6);
tft.println(" Want pi?");
tft.println(" ");
tft.print(8675309, HEX); // print 8,675,309 out in HEX!
tft.println(" Print HEX!");
tft.println(" ");
tft.setTextColor(WHITE);
tft.println("Sketch has been");
tft.println("running for: ");
tft.setTextColor(MAGENTA);
tft.print(millis() / 1000);
tft.setTextColor(WHITE);
tft.print(" seconds.");
}
void mediabuttons() {
// play
tft.fillScreen(BLACK);
tft.fillRoundRect(25, 10, 78, 60, 8, WHITE);
tft.fillTriangle(42, 20, 42, 60, 90, 40, RED);
delay(500);
// pause
tft.fillRoundRect(25, 90, 78, 60, 8, WHITE);
tft.fillRoundRect(39, 98, 20, 45, 5, GREEN);
tft.fillRoundRect(69, 98, 20, 45, 5, GREEN);
delay(500);
// play color
tft.fillTriangle(42, 20, 42, 60, 90, 40, BLUE);
delay(50);
// pause color
tft.fillRoundRect(39, 98, 20, 45, 5, RED);
tft.fillRoundRect(69, 98, 20, 45, 5, RED);
// play color
tft.fillTriangle(42, 20, 42, 60, 90, 40, GREEN);
}
3.3TFT_eSPI庫版
參考：使用DOIT ESP32 DEVKIT V1驅(qū)動屏幕ST7789
3.3.1配置TFT_eSPI
配置TFT_eSPI,作者分了4個部分。
a.選擇屏幕的驅(qū)動和尺寸
b.定義引腳
非常重要，之前一直沒有點亮屏幕而改用Adafruit庫，就是因為引腳定義的問題。
// TFT官方配置
#define TFT_MOSI 15 // In some display driver board, it might be written as "SDA" and so on.
#define TFT_SCLK 14
#define TFT_CS 5 // Chip select control pin
#define TFT_DC 27 // Data Command control pin
#define TFT_RST 33 // Reset pin (could connect to Arduino RESET pin)
#define TFT_BL 22 // LED back-light
//配置1,完全按照引腳圖來配置
#define TFT_MOSI 21
#define TFT_SCLK 22
#define TFT_DC 4
#define TFT_RST 23
//#define TFT_CS 34 // 沒有CS引腳
//#define TFT_BL 35 // 背光不需要設置
//配置2,根據(jù)官方使用修改而來
#define TFT_MOSI 5 //官方使用15,對應HSPI CS0引腳,這里用VSPI CS0,其中V指virtual
#define TFT_SCLK 18 //官方使用14,對應HSPI CLK,這里用VSPI CLK
#define TFT_DC 4
#define TFT_RST 22
//#define TFT_CS 34 // 沒有CS引腳
//#define TFT_BL 35 // 背光不需要設置
c.定義啟用的字體
沒特別的需求就別動配置,關掉某些字體可以節(jié)省存儲空間。
d. 其他選項
主要是控制SPI協(xié)議的頻率,沒事別動
3.3.2TFT_eSPI 顯示圖片
參考資料：
-
【CSDN】ESP32 Arduino 學習篇（五）TFT_eSPI庫
-
【CSDN@慕容流年】《Arduino》開發(fā) 之 TFT_eSPI 庫 顯示一張彩色圖片
main.c
#include <TFT_eSPI.h>
#include <SPI.h>
#include <Wire.h>
#include "bmp.h"
#ifndef TFT_DISPOFF
#define TFT_DISPOFF 0x28
#endif
#ifndef TFT_SLPIN
#define TFT_SLPIN 0x10
#endif
TFT_eSPI tft = TFT_eSPI(240, 240); // Invoke custom library
void showImage(int32_t x, int32_t y, int32_t w, int32_t h, const uint16_t *data);
void setup()
{
Serial.begin(9600);
Serial.println("Start");
tft.init();
// 設置屏幕顯示的旋轉角度，參數(shù)為：0, 1, 2, 3
tft.setRotation(2); // 分別代表 0°、90°、180°、270°
tft.fillScreen(TFT_BLACK);// //屏幕填充顏色，如果沒有設置，沒有顯示的區(qū)域會發(fā)現(xiàn)花屏
tft.setTextSize(2);
tft.setTextColor(TFT_MAGENTA);
tft.setCursor(0, 0);
tft.setTextDatum(MC_DATUM);
tft.setTextSize(1);
if (TFT_BL > 0) { // TFT_BL has been set in the TFT_eSPI library in the User Setup file TTGO_T_Display.h
//顯示屏背光
ledcSetup(10, 5000/*freq*/, 10 /*resolution*/);//信號頻率 5000 Hz 占空比分辨率 10位
ledcAttachPin(TFT_BL, 10);// LEDC_CHANNEL_10
analogReadResolution(10);
ledcWrite(10,1023); // // 1023 = 2 ^ 10 - 1
}
}
void loop()
{
// tft.fillScreen(TFT_WHITE);
// tft.setSwapBytes(true);
showImage(0, 0, 240, 160, bmp1);
// delay(1000);
}
#define PI_BUF_SIZE 128
void showImage(int32_t x, int32_t y, int32_t w, int32_t h, const uint16_t *data){
int32_t dx = 0;
int32_t dy = 0;
int32_t dw = w;
int32_t dh = h*2;
if (x < 0) { dw += x; dx = -x; x = 0; }
if (y < 0) { dh += y; dy = -y; y = 0; }
if (dw < 1 || dh < 1) return;
CS_L;
data += dx + dy * w;
uint16_t buffer[PI_BUF_SIZE];
uint16_t* pix_buffer = buffer;
uint16_t high,low;
tft.setWindow(x, y, x + dw - 1, y + dh - 1);
// Work out the number whole buffers to send
uint16_t nb = (dw * dh) / (2 * PI_BUF_SIZE);
// Fill and send "nb" buffers to TFT
for (int32_t i = 0; i < nb; i++) {
for (int32_t j = 0; j < PI_BUF_SIZE; j++) {
high = pgm_read_word(&data[(i * 2 * PI_BUF_SIZE) + 2 * j + 1]);
low = pgm_read_word(&data[(i * 2 * PI_BUF_SIZE) + 2 * j ]);
pix_buffer[j] = (high<<8)+low;
}
tft.pushPixels(pix_buffer, PI_BUF_SIZE);
}
// Work out number of pixels not yet sent
uint16_t np = (dw * dh) % (2 * PI_BUF_SIZE);
// Send any partial buffer left over
if (np) {
for (int32_t i = 0; i < np; i++)
{
high = pgm_read_word(&data[(nb * 2 * PI_BUF_SIZE) + 2 * i + 1]);
low = pgm_read_word(&data[(nb * 2 * PI_BUF_SIZE) + 2 * i ]);
pix_buffer[i] = (high<<8)+low;
}
tft.pushPixels(pix_buffer, np);
}
CS_H;
}
LCD全彩圖片時取模軟件 Image2Lcd 2.9(破解版)。
bmp.h
const unsigned short bmp1[] PROGMEM = { 0X10,0X10,0X00,0XF0,0X00,0XA0,0X01,0X1B,};
4.成果展示
在【文件】-【示例】-【TFT_eSPI】-【320x240】中找一個示例程序演示。
文章來源：http://www.zghlxwxcb.cn/news/detail-411167.html
ESP32 驅(qū)動ST7789液晶屏效果展示文章來源地址http://www.zghlxwxcb.cn/news/detail-411167.html
資料下載
- 【CSDN】1.54寸（240240）彩色TFT 顯示高清IPS LCD 屏幕 SPI接口ST7789驅(qū)動 資料匯總
參考資料
- [1] 【YouTube】ESP32 + 1.3 inch 240x240 IPS LCD (ST7789 SPI interface), using TFT_eSPI library
- [2] https://arduino-er.blogspot.com/2020/07/esp32-13-inch-240x240-ips-lcd-st7789.html
- [3] 【GitHub】TFT_eSPI庫
- [4] 【CSDN@LoveArduinos
】Arduino開發(fā)-TFT_eSPI庫學習
[5] 【簡書】 使用DOIT ESP32 DEVKIT V1驅(qū)動屏幕ST7789的踩坑之旅
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