#include <IRremote.h> const int motorPin1 = 9; const int motorPin2 = 10; const int potPin = A0; const int trigPin = 3; const int echoPin = 4; const int ledPin = 5; const int buzzerPin = 6; const int irRecvPin = 7; int motorSpeed = 90; int distance = 0; int buzzerFreq = 0; int speed = 0; // 红外遥控器控制的风扇转速 IRrecv irrecv(irRecvPin); decode_results results; void setup() { Serial.begin(9600); pinMode(motorPin1, OUTPUT); pinMode(motorPin2, OUTPUT); pinMode(potPin, INPUT); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); pinMode(ledPin, OUTPUT); pinMode(buzzerPin, OUTPUT); // 初始化红外遥控器接收器 irrecv.enableIRIn(); } void loop() { int potValue = analogRead(potPin); motorSpeed = map(potValue, 0, 1023, 0, 255); analogWrite(motorPin1, motorSpeed); analogWrite(motorPin2, 0); // 接收红外遥控器的遥控信号,调整风扇转速 if (irrecv.decode(&results)) { if (results.value == 16712445 && speed < 255) { // 按“+”号键 speed = speed + 30; } else if (results.value == 16750695 && speed > 0) { // 按下“-”号键 speed = speed - 30; } irrecv.resume(); } motorSpeed = speed; analogWrite(motorPin1, motorSpeed); analogWrite(motorPin2, 0); digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); int duration = pulseIn(echoPin, HIGH); distance = duration * 0.034 / 2; if (distance < 10) { for (int i = 0; i < 5; i++) { digitalWrite(ledPin, HIGH); buzzerFreq = 2000 + i * 500; tone(buzzerPin, buzzerFreq); delay(100); digitalWrite(ledPin, LOW); noTone(buzzerPin); delay(100); } analogWrite(motorPin1, 0); analogWrite(motorPin2, 0); } else { digitalWrite(ledPin, LOW); noTone(buzzerPin); } Serial.print("distance: "); Serial.print(distance); Serial.print("cm, motor speed: "); Serial.print(motorSpeed); Serial.println(); delay(100); } 代码改错
时间: 2024-03-07 21:49:42 浏览: 105
代码本身没有明显的错误,但是可以进行一些改进和优化:
1. 在读取红外遥控器信号后,应该先将速度值进行更新,再写入电机控制引脚,避免在调整速度时出现突变。
2. 在循环中延时的时间应该尽量减少,可以根据实际需要进行调整。同时,可以使用 millis() 函数代替 delay() 函数,实现更好的并发控制。
3. 在超声波测距的过程中,应该对测量结果进行有效性检查,避免因异常值导致的误判。
以下是对代码的改进和优化后的代码:
```c++
#include <IRremote.h>
const int motorPin1 = 9;
const int motorPin2 = 10;
const int potPin = A0;
const int trigPin = 3;
const int echoPin = 4;
const int ledPin = 5;
const int buzzerPin = 6;
const int irRecvPin = 7;
int motorSpeed = 0;
int targetSpeed = 0;
int distance = 0;
int buzzerFreq = 0;
unsigned long lastUpdateTime = 0;
IRrecv irrecv(irRecvPin);
decode_results results;
void setup() {
Serial.begin(9600);
pinMode(motorPin1, OUTPUT);
pinMode(motorPin2, OUTPUT);
pinMode(potPin, INPUT);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(ledPin, OUTPUT);
pinMode(buzzerPin, OUTPUT);
irrecv.enableIRIn();
}
void loop() {
unsigned long currentTime = millis();
// 读取电位器的值,调整电机转速
int potValue = analogRead(potPin);
motorSpeed = map(potValue, 0, 1023, 0, 255);
// 接收红外遥控器的遥控信号,调整电机转速
if (irrecv.decode(&results)) {
if (results.value == 16712445 && targetSpeed < 255) { // 按“+”号键
targetSpeed += 30;
} else if (results.value == 16750695 && targetSpeed > 0) { // 按下“-”号键
targetSpeed -= 30;
}
irrecv.resume();
}
// 根据目标速度值逐渐调整电机转速
if (motorSpeed < targetSpeed) {
motorSpeed = min(targetSpeed, motorSpeed + 5);
} else if (motorSpeed > targetSpeed) {
motorSpeed = max(targetSpeed, motorSpeed - 5);
}
// 控制电机转动
analogWrite(motorPin1, motorSpeed);
analogWrite(motorPin2, 0);
// 每隔一段时间进行一次超声波测距
if (currentTime - lastUpdateTime >= 100) {
lastUpdateTime = currentTime;
// 发送超声波信号
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// 接收超声波信号并计算距离
int duration = pulseIn(echoPin, HIGH);
distance = duration * 0.034 / 2;
// 检查距离是否有效,并根据距离控制 LED 灯和蜂鸣器
if (distance > 0 && distance < 10) {
for (int i = 0; i < 5; i++) {
digitalWrite(ledPin, HIGH);
buzzerFreq = 2000 + i * 500;
tone(buzzerPin, buzzerFreq);
delay(100);
digitalWrite(ledPin, LOW);
noTone(buzzerPin);
delay(100);
}
motorSpeed = 0;
targetSpeed = 0;
} else {
digitalWrite(ledPin, LOW);
noTone(buzzerPin);
}
}
// 输出距离和电机转速
Serial.print("distance: ");
Serial.print(distance);
Serial.print("cm, motor speed: ");
Serial.print(motorSpeed);
Serial.println();
}
```
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