Arduino-Intro/firmware/Intelligent_LED/Intelligent_LED.ino at main · Arduino-STM32-Dev/Arduino-Intro · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <SoftwareSerial.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
SoftwareSerial BT(10, 11); // RX=10, TX=11

const int buttonPin = 2;
const int ledPin1 = 9;
const int ledPin2 = 8;
const int lightPin = 4; // 光敏数字引脚 DO 接在 D4

int buttonState = 0;
int lastButtonState = 0;
int ledMode = 0; // 0=灭 1=亮 2=跳动

unsigned long previousMillis = 0;
const long blinkInterval = 200;
bool blinkState = LOW;

char incomingChar;

void updateLCD() {
  lcd.setCursor(0, 0);
  lcd.print("Thea, My Love   ");
  lcd.setCursor(0, 1);
  if (ledMode == 0) {
    lcd.print("LED: OFF ");
  } else if (ledMode == 1) {
    lcd.print("LED: ON  ");
  } else if (ledMode == 2) {
    lcd.print("LED: Blink");
  }
}

void updateLED() {
  if (ledMode == 0) {
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, LOW);
  } else if (ledMode == 1) {
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
  }
}

// ===== 读取光敏并上报 =====
void readAndReportLight() {
  int lightState = digitalRead(lightPin); // 读取数字信号 (0 或 1)

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Light Status:");

  lcd.setCursor(0, 1);
if (lightState == HIGH) { // 暗
    lcd.print("Status: Dark");
    if (ledMode == 0) {
      ledMode = 1;
      updateLED();
    }
    BT.println("Light: Dark (LED Auto ON)");
} else { // 亮
    lcd.print("Status: Bright");
    // 【新增】光线变亮，如果之前是自动亮起的，就自动关掉
    if (ledMode == 1) {
      ledMode = 0;
      updateLED();
      BT.println("Light: Bright (LED Auto OFF)");
    } else {
      BT.println("Light: Bright");
    }
}

  delay(2000); // 停留2秒后切回主界面
  updateLCD();
}

void setup() {
  lcd.init();
  lcd.backlight();

  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(lightPin, INPUT); // 光敏DO引脚设为输入

  ledMode = 0;
  updateLED();
  updateLCD();

  Serial.begin(9600);
  BT.begin(38400);
}

void loop() {
  // ===== 1. LED交替跳动逻辑 =====
  if (ledMode == 2) {
    unsigned long currentMillis = millis();
    if (currentMillis - previousMillis >= blinkInterval) {
      previousMillis = currentMillis;
      blinkState = !blinkState;
      digitalWrite(ledPin1, blinkState ? HIGH : LOW);
      digitalWrite(ledPin2, blinkState ? LOW : HIGH);
    }
  }

  // ===== 2. 按键本地控制逻辑 =====
  buttonState = digitalRead(buttonPin);
  if (buttonState == LOW && lastButtonState == HIGH) {
    if (ledMode == 0 || ledMode == 2) {
      ledMode = 1;
    } else {
      ledMode = 0;
    }
    updateLED();
    updateLCD();
    delay(150);
  }
  lastButtonState = buttonState;

  // ===== 3. 蓝牙控制逻辑 =====
  if (BT.available()) {
    incomingChar = BT.read();
    if (incomingChar == '\r' || incomingChar == '\n') return;

    // 手机发送 'L'：读取光线状态
    if (incomingChar == 'L' || incomingChar == 'l') {
      readAndReportLight();
    }
    else if (incomingChar == '1') {
      ledMode = 1;
      updateLED();
      updateLCD();
    }
    else if (incomingChar == '0') {
      ledMode = 0;
      updateLED();
      updateLCD();
    }
    else if (incomingChar == '2') {
      ledMode = 2;
      previousMillis = millis();
      updateLCD();
    }
    else if (incomingChar == '3') {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Happy Mid-Autumn");
      lcd.setCursor(0, 1);
      lcd.print("Festival");
    }
  }
}