【Arduino】189种传感器模块系列实验(资料代码+仿真编程+图形编程)
实验二百四十九:1.28寸圆形彩色TFT显示屏 高清IPS 模块 240*240 SPI接口GC9A01驱动
项目之一百三十七:ESP32+GC9A01之随机位置变化的红、绿、蓝呼吸矩形
实验开源代码
- /*
- 【Arduino】189种传感器模块系列实验(资料代码+仿真编程+图形编程)
- 实验二百四十九:1.28寸圆形彩色TFT显示屏 高清IPS 模块 240*240 SPI接口GC9A01驱动
- 项目之一百三十七:ESP32+GC9A01之随机位置变化的红、绿、蓝呼吸矩形
- */
-
- // GC9A01---------- ESP32
- // RST ------------ NC(复位引脚,此处未连接)
- // CS ------------- D4(片选引脚,连接到ESP32的D4引脚)
- // DC ------------- D2(数据/命令选择引脚,连接到ESP32的D2引脚)
- // SDA ------------ D23 (green)(主数据输出引脚,连接到ESP32的D23引脚,绿色线)
- // SCL ------------ D18 (yellow)(时钟信号引脚,连接到ESP32的D18引脚,黄色线)
- // GND ------------ GND(接地引脚,连接到ESP32的接地端)
- // VCC -------------3V3(电源引脚,连接到ESP32的3.3V电源)
-
- #include <TFT_eSPI.h>
- #include <math.h>
-
- #define SCREEN_WIDTH 240
- #define SCREEN_HEIGHT 240
- #define RECT_SIZE 80 // 矩形大小
- #define BREATH_SPEED 0.1 // **降低呼吸速度,让变化更明显**
- #define MAX_BRIGHTNESS 255 // **增加最大亮度**
- #define MIN_BRIGHTNESS 50 // **设置最低亮度,避免完全消失**
-
- TFT_eSPI tft = TFT_eSPI();
- float breathPhase = 0; // 控制呼吸亮度变化
-
- void setup() {
- Serial.begin(115200);
- tft.init();
- tft.setRotation(2);
- tft.fillScreen(TFT_BLACK);
- randomSeed(analogRead(0)); // 初始化随机数种子
- }
-
- void drawBreathingRectangles() {
- breathPhase += BREATH_SPEED; // 更新呼吸周期
- float brightness = (sin(breathPhase) + 1) / 2 * (MAX_BRIGHTNESS - MIN_BRIGHTNESS) + MIN_BRIGHTNESS;
-
- // 计算颜色
- uint16_t red = tft.color565(brightness, 0, 0);
- uint16_t green = tft.color565(0, brightness, 0);
- uint16_t blue = tft.color565(0, 0, brightness);
-
- // **随机位置**
- int xRed = random(0, SCREEN_WIDTH - RECT_SIZE);
- int yRed = random(0, SCREEN_HEIGHT - RECT_SIZE);
- int xGreen = random(0, SCREEN_WIDTH - RECT_SIZE);
- int yGreen = random(0, SCREEN_HEIGHT - RECT_SIZE);
- int xBlue = random(0, SCREEN_WIDTH - RECT_SIZE);
- int yBlue = random(0, SCREEN_HEIGHT - RECT_SIZE);
-
- // **绘制三个呼吸矩形**
- tft.fillRect(xRed, yRed, RECT_SIZE, RECT_SIZE, red); // 红色
- tft.fillRect(xGreen, yGreen, RECT_SIZE, RECT_SIZE, green); // 绿色
- tft.fillRect(xBlue, yBlue, RECT_SIZE, RECT_SIZE, blue); // 蓝色
- }
-
- void loop() {
- tft.fillScreen(TFT_BLACK); // 清屏
- drawBreathingRectangles(); // 生成随机位置的矩形
- delay(200); // **降低刷新频率,让颜色变化更平滑**
- }
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