不明白为什么我没有从我的 raspberry pi 3 接收到任何 rssi 数据到我的服务器 [英] Not understanding why I am not receiving any rssi data from my raspberry pi 3 to my server

问题描述

我在尝试显示来自我的 raspberry pi 3 的 RSSI 值以在我的服务器上显示时遇到问题.连接成功 如图所示我已经能够成功连接我的客户端和服务器，但没有显示 rssi 数据.

以下代码是我从pi执行的:

var noble = require('noble');//用你服务器的IP替换localhost；var socket = require('socket.io-client')('http://localhost:3000/scanner');//替换为你的硬件地址var addressToTrack = '7c669d9b2dda';socket.on('connect', function(){console.log('连接到服务器');});贵族.on('发现'，功能(外设){if(peripheral.uuid == addressToTrack){socket.emit('deviceData', {mac:peripheral.uuid, rssi:peripheral.rssi});}});高贵的开始扫描([]，真)

接下来的代码是我用来设置我的服务器以及它应该如何接收从 pi 发送的信息的代码:

var express = require('express');var app = require('express')();var http = require('http').Server(app);var io = require('socket.io')(http);var scan = io.of('/scanner');扫描仪.on('连接'，功能(套接字){console.log('扫描仪已连接');socket.on('message', function(msg) {//从扫描仪接收消息//在这里做一些处理});socket.on('断开', function() {console.log('扫描仪断开');});});http.listen(3000, function() {console.log('监听 *:3000');});

以下代码摘自https://blog.truthlabs.com/beacon-tracking-with-node-js-and-raspberry-pi-794afa880318 如果您想知道我从哪里引用代码.

我对这一切都很陌生，所以如果我不断要求澄清，请原谅.

解决方案

您在服务器上缺少 deviceData 的侦听器，这是您从客户端发出的事件.

>

socket.on('deviceData', function(msg) {//从扫描仪接收消息//在这里做一些处理});

I am having problems trying to display the RSSI values from my raspberry pi 3 to show on my server. Connection Success as you can see by the picture I have been able to successfully connect my client and server but no rssi data are showing.

The following code is what I executed from the pi:

var noble = require('noble');

//replace localhost with your server's IP;
var socket = require('socket.io-client')('http://localhost:3000/scanner');

//replace with your hardware address
var addressToTrack = '7c669d9b2dda'; 

socket.on('connect', function(){  
  console.log('connected to server');
});

noble.on('discover', function(peripheral){
  if(peripheral.uuid == addressToTrack){
    socket.emit('deviceData', {mac: peripheral.uuid, rssi:peripheral.rssi});    
  }
});

noble.startScanning([], true) 

This next code is the code I used to setup my server and how it should receive the information sent from the pi:

var express = require('express');
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

var scanner = io.of('/scanner'); 

scanner.on('connection', function(socket) {

    console.log('Scanner Connected');

    socket.on('message', function(msg) {
        //received message from scanner
        //do some processing here
    });

    socket.on('disconnect', function() {
        console.log('Scanner Disconnected');
    });
});

http.listen(3000, function() {
    console.log('listening on *:3000');
});

The following code is taken from https://blog.truthlabs.com/beacon-tracking-with-node-js-and-raspberry-pi-794afa880318 if you're wondering where I am referencing the code from.

I am new to all this so forgive if I continuously ask for clarifications.

解决方案

You're missing a listener for deviceData on the server, which is the event you're emitting from the client.

socket.on('deviceData', function(msg) {
    //received message from scanner
    //do some processing here
});

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