Commit c9b8362ad7b6d3d491892f350b09e5912fd7cbb1
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f72e635e44
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pruebas con exito para telemetria
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.gitignore
index.js
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1 | +// Include Nodejs' net module. | |
2 | +const Net = require('net'); | |
3 | +const converter = require('hex2dec'); | |
4 | +// The port number and hostname of the server. | |
5 | +const port = 10001; | |
6 | +const host = '190.15.193.76'; | |
7 | +var respuesta = ''; | |
8 | + | |
9 | +// Create a new TCP client. | |
10 | +const client = new Net.Socket(); | |
11 | +// Send a connection request to the server. | |
12 | +client.connect({ port: port, host: host }, function() { | |
13 | + // If there is no error, the server has accepted the request and created a new | |
14 | + // socket dedicated to us. | |
15 | + console.log('TCP connection established with the server.'); | |
16 | + var code = String.fromCharCode(01); | |
17 | + // The client can now send data to the server by writing to its socket. | |
18 | + console.info(client.write(code + 'i201TT')); | |
19 | +}); | |
20 | + | |
21 | +// The client can also receive data from the server by reading from its socket. | |
22 | +client.on('data', function(chunk) { | |
23 | + var data = chunk.toString('utf8'); | |
24 | + if (respuesta) { | |
25 | + respuesta += data; | |
26 | + } else { | |
27 | + var respuesta = data; | |
28 | + } | |
29 | + | |
30 | + if (data[data.length - 1].charCodeAt(0) == 3 && respuesta.slice(1,5) == 'i201') { | |
31 | + var indice = 0; | |
32 | + var fecha = new Date(); | |
33 | + var respuesta = respuesta.slice(17, respuesta.length); | |
34 | + respuesta = respuesta.split('&&')[0]; | |
35 | + console.info(procesar(respuesta)); | |
36 | + } | |
37 | + | |
38 | + // Request an end to the connection after the data has been received. | |
39 | + client.end(); | |
40 | +}); | |
41 | + | |
42 | +client.on('end', function() { | |
43 | + console.log('Requested an end to the TCP connection'); | |
44 | +}); | |
45 | + | |
46 | +function procesar(respuesta) { | |
47 | + var tanque = { | |
48 | + tanque: respuesta.slice(0,2), | |
49 | + producto: respuesta.slice(2,3), | |
50 | + estado: respuesta.slice(3,7), | |
51 | + campos: [] | |
52 | + } | |
53 | + | |
54 | + var campos = parseInt(respuesta.slice(7,9)); | |
55 | + | |
56 | + var inicio = 9; | |
57 | + var fin = 17; | |
58 | + | |
59 | + for (var i = 0; i < campos; i++) { | |
60 | + tanque.campos.push(procesarCampo(respuesta.slice(inicio,fin))); | |
61 | + inicio += 8; | |
62 | + fin += 8; | |
63 | + } | |
64 | + | |
65 | + if ((fin - 8) < respuesta.length) { | |
66 | + var respuestas = procesar(respuesta.slice((fin - 8), respuesta.length)); | |
67 | + } else { | |
68 | + var respuestas = []; | |
69 | + } | |
70 | + | |
71 | + respuestas.unshift(tanque); | |
72 | + return respuestas; | |
73 | +} | |
74 | + | |
75 | +function procesarCampo(campo) { | |
76 | + var proceso = ''; | |
77 | + | |
78 | + if (parseInt(campo) == 0) { | |
79 | + return 0; | |
80 | + } | |
81 | + | |
82 | + for (var i = 0; i < campo.length; i++) { | |
83 | + proceso += hexToBinary(campo[i]); | |
84 | + } | |
85 | + | |
86 | + var signo = proceso[0] == 0 ? 1 : -1; | |
87 | + var exponente = parseInt(proceso.slice(1, 9), 2); | |
88 | + var mantiza = parseInt(proceso.slice(9, 32), 2); | |
89 | + | |
90 | + return signo * Math.pow(2, exponente - 127) * (1 + (mantiza / 8388608)); | |
91 | +} | |
92 | + | |
93 | +function hexToBinary(digito) { | |
94 | + var binario = parseInt(digito, 16).toString(2); | |
95 | + | |
96 | + while (binario.length < 4) { | |
97 | + binario = '0' + binario; | |
98 | + } | |
99 | + | |
100 | + return binario; | |
101 | +} | |
0 | 102 | \ No newline at end of file |
package.json
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1 | +{ | |
2 | + "name": "tcp-prueba", | |
3 | + "version": "1.0.0", | |
4 | + "description": "", | |
5 | + "main": "index.js", | |
6 | + "scripts": { | |
7 | + "test": "echo \"Error: no test specified\" && exit 1" | |
8 | + }, | |
9 | + "author": "", | |
10 | + "license": "ISC", | |
11 | + "dependencies": { | |
12 | + "hex2dec": "^1.1.2", | |
13 | + "net": "^1.0.2" | |
14 | + } | |
15 | +} |