json - 传感器数据未上传至 artik 云

Question

我正在尝试通过node.js 将传感器数据发送到artik cloud。 (使用网络套接字和串行端口)。但它发送空。有人知道原因吗？我刚刚复制了教程中的代码，因此没有语法错误。

var webSocketUrl = "wss://api.artik.cloud/v1.1/websocket?ack=true";
var device_id = "####";
var device_token = "#####";

var isWebSocketReady = false;
var ws = null;
var serialport = require("serialport");


var portName = 'COM5';
var sp= new serialport.SerialPort(portName, {
    baudRate: 9600,
    parser: serialport.parsers.readline("\r\n")

});
var WebSocket = require('ws');

/**
 * Gets the current time in millis
 */
function getTimeMillis(){
    return parseInt(Date.now().toString());
}

/**
 * Create a /websocket bi-directional connection 
 */
function start() {
    //Create the websocket connection
        isWebSocketReady = false;
    ws = new WebSocket(webSocketUrl);
    ws.on('open', function() {
                console.log("Websocket connection is open ....");
        register();
    });
    ws.on('message', function(data, flags) {
                console.log("Received message: " + data + '\n');
    });
    ws.on('close', function() {
                console.log("Websocket connection is closed ....");
    });
}

/**
 * Sends a register message to the websocket and starts the message flooder
 */
function register(){
        console.log("Registering device on the websocket connection");
    try{
        var registerMessage = '{"type":"register", "sdid":"'+device_id+'", "Authorization":"bearer '+device_token+'", "cid":"'+getTimeMillis()+'"}';
                console.log('Sending register message ' + registerMessage + '\n');
        ws.send(registerMessage, {mask: true});
                isWebSocketReady = true;
    }
    catch (e) {
        console.error('Failed to register messages. Error in registering message: ' + e.toString());
    }   
}

/**
 * Send one message to ARTIK Cloud
 */
function sendData(temperature){
    try{
     //   ts = ', "ts": '+getTimeMillis();
            var data = {
                "temp": temperature

               };
        var payload = '{"sdid":"'+device_id+'", "data": '+JSON.stringify(data)+', "cid":"'+getTimeMillis()+'"}';
        console.log('Sending payload ' + payload);
        ws.send(payload, {mask: true});
    } catch (e) {
        console.error('Error in sending a message: ' + e.toString());
    }   
}

/**
 * All start here
 */


start(); // create websocket connection

sp.on("open", function () {
    sp.on('data', function(data) {
            if (!isWebSocketReady){
                console.log("WebSocket is not ready. Skip sending data to ARTIK Cloud (data:" + data +")");
                return;
            }
            console.log("Serial port received data:" + data);
            //var parsedStrs = data.split(",");
            var temperature = parseInt(data);




            sendData(temperature);
    });
});

Answer 1

如果您引用我们的第一个 IoT 示例: https://developer.artik.cloud/documentation/tutorials/your-first-iot-device.html

node.js 示例发送来自温度传感器的值。作为依赖项，它需要连接 Arduino、Raspberry Pi 和位于右侧引脚的 DHT 温度传感器。如果您在将数据发送到 ARTIK Cloud 之前看到 null，则说明您没有从传感器获得任何值。

特别是，如果出现任何解析错误，请输出并打印以控制台以下函数的“温度”值:函数 sendData(温度)//...

如果您需要更多信息，请发送电子邮件至developer@artik.cloud。

谢谢!