P5.js和Tone.js无法连接到Arduino

我在显示图像和使用p5播放音频时遇到问题，当我的arduino红灯熄灭时。我的arduino工程，我只是无法弄清楚如何让红色指示灯熄灭时弹出图像并播放音频。我的项目基本上是一个使用超声波传感器的运动传感器，如果有帮助。P5.js和Tone.js无法连接到Arduino

谢谢你的时间。

这里是我的sketch.js代码：

var serial;   // variable to hold an instance of the serialport library 
var portName = '/dev/cu.usbmodem1421'; // fill in your serial port name here 
var synth; 


function preload() { 
    alert = loadImage('alert.jpeg'); 
} 

function setup() { 
    createCanvas(1920,1080); 

    serial = new p5.SerialPort();  // make a new instance of the serialport 
library 
    serial.on('list', printList); // set a callback function for the serialport 
list event 
    serial.on('connected', serverConnected); // callback for connecting to the 
server 
    serial.on('open', portOpen);  // callback for the port opening 
    serial.on('data', serialEvent);  // callback for when new data arrives 
    serial.on('error', serialError); // callback for errors 
    serial.on('close', portClose);  // callback for the port closing 

    serial.list();      // list the serial ports 
    serial.open(portName);    // open a serial port 

    var synth = new Tone.Synth().toMaster(); 
    synth.triggerAttackRelease(440, 2); 

    var player = new Tone.Player("IntruderAlert.mp4").toMaster(); 
//play as soon as the buffer is loaded 
    player.autostart = true; 
    player.playbackRate = 0.8; 
} 

function serverConnected() { 
    println('connected to server.'); 
} 

function portOpen() { 
    println('the serial port opened.') 
} 

function serialEvent() { 

} 

function serialError(err) { 
    println('Something went wrong with the serial port. ' + err); 
} 

function portClose() { 
    println('The serial port closed.'); 
}

这里是我的.ino代码：

#define trigPin 6<br>#define echoPin 7 
#define GreenLED 11 
#define YellowLED 10 
#define RedLED 9 
#define buzzer 3 

int sound = 500; 


void setup() { 
    Serial.begin (9600); 
    pinMode(trigPin, OUTPUT); 
    pinMode(echoPin, INPUT); 
    pinMode(GreenLED, OUTPUT); 
    pinMode(YellowLED, OUTPUT); 
    pinMode(RedLED, OUTPUT); 
    pinMode(buzzer, OUTPUT); 
} 

void loop() { 
    long duration, distance; 
    digitalWrite(trigPin, LOW); 
    delayMicroseconds(2); 
    digitalWrite(trigPin, HIGH); 
    delayMicroseconds(10); 
    digitalWrite(trigPin, LOW); 
    duration = pulseIn(echoPin, HIGH); 
    distance = (duration/5)/29.1; 

    if (distance < 50) { 
     digitalWrite(GreenLED, HIGH); 
} 
    else { 
     digitalWrite(GreenLED, LOW); 
    } 

    if (distance < 20) { 
    digitalWrite(YellowLED, HIGH); 
} 
    else { 
    digitalWrite(YellowLED,LOW); 
    } 

    if (distance < 5) { 
    digitalWrite(RedLED, HIGH); 
    sound = 1000; 
} 
else { 
    digitalWrite(RedLED,LOW); 
} 

if (distance > 5 || distance <= 0){ 
    Serial.println("Out of range"); 
    noTone(buzzer); 
} 
else { 
    Serial.print(distance); 
    Serial.println(" cm"); 
    tone(buzzer, sound); 

} 
delay(300); 
}

来源

2017-05-06 Mr. Shanklin