Versión Inicial

config.js

@@ -0,0 +1,16 @@
+export default {
+    // Configuración de ThingSpeak
+    "thingSpeak": {
+        "channelId": "",
+        "writeKey": ""
+    },
+    // Configuración del CanSat
+    "canSat": {
+        
+    },
+    // Configuración del Serial
+    "serial": {
+        "path": "/dev/tty.usbserial-0001",
+        "baudRate": 9600
+    }
+}

libs/api.js

@@ -0,0 +1,96 @@
+// Importamos las utilidades que necesitemos y la configuración del programa
+import { sleep } from './utils.js';
+import config from '../config.js';
+
+// Creamos una lista de elementos que contendrá las peticiones acumuladas para enviarlas de golpe
+const peticionesRetrasadas = [];
+
+/**
+ * Añade el dato a la lista de peticiones en el formato que necesita la api
+ * @param {object} datos Objeto con los datos a subir
+ */
+async function subirDato(datos) {
+    if (datos === null || datos === undefined) {
+        return;
+    }
+    const datosParaEnviar = {
+        created_at: datos.datetime,
+        delta_t: 1,
+        field1: datos.paquetes,
+        field2: datos.temperatura,
+        field3: datos.presion,
+        field4: datos.altitudSegunPresion,
+        latitude: datos.latitud,
+        longitude: datos.longitud
+    };
+
+    //console.log(datosParaEnviar);
+
+    peticionesRetrasadas.push(datosParaEnviar);
+}
+
+
+/**
+ * Sube los datos de golpe al ThingSpeak
+ * @param {Array} datosParaSubir Array de objetos con los datos a subir
+ * @returns {Promise<boolean>} True si se subieron los datos correctamente, false si no
+ */
+async function subirDatosDeGolpe(datosParaSubir) {
+    //console.log("Subiendo datos de golpe...");
+
+    // Si no hay datos, no subimos nada
+    if(datosParaSubir.length === 0) {
+        return false;
+    }
+
+    // Preparamos los datos para subir añadiendo la apiKey
+    const datosParaEnviar = {
+        write_api_key: config.thingSpeak.writeKey,
+        updates: datosParaSubir
+    }
+
+    //console.log(datosParaEnviar);
+
+    // Hacemos la petición a la API de ThingSpeak
+    let resultado = false;
+    await fetch(`https://api.thingspeak.com/channels/${config.thingSpeak.channelId}/bulk_update.json`, {
+        method: "POST",
+        headers: {
+            "Content-Type": "application/json"
+        },
+        body: JSON.stringify(datosParaEnviar) // Convertimos el objeto a JSON para enviarlo
+    })
+        .then(response => response.json())
+        .then(data => {
+            //console.log(data);
+            resultado = true;
+        })
+        .catch(error => {
+            console.error('Error al subir los datos:', error);
+        })
+    return resultado;
+}
+
+async function bucleSubidaDatos() {
+    while(true) {
+        await sleep(20000);
+        console.log("Lista por subir: " + peticionesRetrasadas.length);
+        const datosQueSeVanASubir = JSON.parse(JSON.stringify(peticionesRetrasadas))
+        if (await subirDatosDeGolpe(datosQueSeVanASubir)) { // Con eso creamos una copia de los datos del array
+            if (peticionesRetrasadas.length == datosQueSeVanASubir.length) {
+                peticionesRetrasadas.length = 0;
+            } else {
+                peticionesRetrasadas.splice(0, datosQueSeVanASubir.length);
+                //console.log("Datos que se hubieran perdido: " + peticionesRetrasadas)
+            }
+        }
+    }
+}
+
+export {
+    subirDato
+}
+
+bucleSubidaDatos();
+
+

libs/utils.js

@@ -0,0 +1,51 @@
+/**
+ * Convierte una línea de datos en un objeto
+ * @param {string} line Línea de datos para convertir a objeto
+ * @returns {object} Objeto con los datos convertidos
+ */
+function dataLineToObject(line) {
+    //Separamos nuestra línea en diferentes trozos usando como separador el ';'
+    const lineArray = line.split(";");
+
+    //Devolvemos un objeto con sus propiedades convertidas
+
+    //Usamos el trim() para eliminar los espacios delante y detrás de los valores
+    //Usamos el parseFloat para convertir esos valores a decimales, ya que son cadenas de texto
+    //Usamos el parseInt para convertir esos valores a enteros, ya que son cadenas de texto
+    try {
+        return {
+            paquetes: parseInt(lineArray[0].trim()),
+            temperatura: parseFloat(lineArray[1].trim()),
+            presion: parseFloat(lineArray[2].trim()),
+            altitudSegunPresion: parseFloat(lineArray[3].trim()),
+            nombreEstacion: lineArray[4].trim(),
+            latitud: parseFloat(lineArray[5].trim()),
+            longitud: parseFloat(lineArray[6].trim()),
+            altitudMetros: parseFloat(lineArray[7].trim()),
+            velocidadKmph: parseFloat(lineArray[8].trim()),
+            direccionONose: parseFloat(lineArray[9].trim()),
+            numSatelites: parseInt(lineArray[10].trim()),
+            datetime: new Date(lineArray[11].trim().replace("Date/Time: ", ""))
+        };
+    } catch (error) {
+        console.error('Error al convertir los datos:', error);
+        return null;
+    }
+}
+
+/**
+ * Espera un cierto tiempo, esto sirve para crear temporizadores
+ * @param {number} ms Milisegundos que hay que esperar
+ * @returns {Promise<void>}
+ */
+async function sleep(ms) {
+    return new Promise((resolve) => {
+        setTimeout(resolve, ms);
+    });
+}
+
+// Exportamos las funciones para poder usarlas en otras partes del programa
+export {
+    dataLineToObject,
+    sleep
+}

main.js

@@ -0,0 +1,38 @@
+// Importamos las librerias necesarias
+import { SerialPort } from 'serialport';
+import { ReadlineParser } from '@serialport/parser-readline';
+
+// Importamos las funciones de utilidad que vayamos a usar
+import { dataLineToObject } from './libs/utils.js';
+
+// Importamos las funciones de la API
+import { subirDato } from './libs/api.js';
+
+// Importamos toda la configuración
+import config from './config.js';
+
+// Creamos una conexión con el puerto serial
+const port = new SerialPort({
+    path: config.serial.path,
+    baudRate: config.serial.baudRate,
+    autoOpen: true
+});
+
+// Le establecemos que procese los datos recibidos con el parser de readline y le decimos que diferencie las líneas por saltos de línea
+const parser = port.pipe(new ReadlineParser({ delimiter: '\n' }));
+
+// Esperamos a que se abra el puerto y cuando lo haga ejecutamos un console log para indicar que se ha abierto correctamente
+port.on('open', () => {
+    console.log(`Puerto ${config.serial.path} conectado correctamente.`);
+});
+
+// Cada vez que recibamos un dato, le decimos al programa que lo procese sin bloquear la ejecución principal
+parser.on('data', async (data) => {
+    // Convertimos la línea recibida en un objeto y lo mandamos a la api para que se encargue de la subida
+    subirDato(dataLineToObject(data));
+});
+
+// Si hay un error en el puerto, lo mostramos en la consola
+port.on('error', (err) => {
+    console.error('Error en el puerto:', err.message);
+});

package-lock.json

@@ -0,0 +1,328 @@
+{
+  "name": "cansat",
+  "version": "0.0.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "cansat",
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+      "dependencies": {
+        "@serialport/parser-readline": "^13.0.0",
+        "path": "^0.12.7",
+        "serialport": "^13.0.0"
+      }
+    },
+    "node_modules/@serialport/binding-mock": {
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+      },
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+        "@serialport/parser-cctalk": "13.0.0",
+        "@serialport/parser-delimiter": "13.0.0",
+        "@serialport/parser-inter-byte-timeout": "13.0.0",
+        "@serialport/parser-packet-length": "13.0.0",
+        "@serialport/parser-readline": "13.0.0",
+        "@serialport/parser-ready": "13.0.0",
+        "@serialport/parser-regex": "13.0.0",
+        "@serialport/parser-slip-encoder": "13.0.0",
+        "@serialport/parser-spacepacket": "13.0.0",
+        "@serialport/stream": "13.0.0",
+        "debug": "4.4.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/serialport/donate"
+      }
+    },
+    "node_modules/util": {
+      "version": "0.10.4",
+      "resolved": "https://registry.npmjs.org/util/-/util-0.10.4.tgz",
+      "integrity": "sha512-0Pm9hTQ3se5ll1XihRic3FDIku70C+iHUdT/W926rSgHV5QgXsYbKZN8MSC3tJtSkhuROzvsQjAaFENRXr+19A==",
+      "license": "MIT",
+      "dependencies": {
+        "inherits": "2.0.3"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "cansat",
+  "version": "0.0.1",
+  "description": "Programa que recibe los datos por serial y los manda a ThingSpeak para mostrarlos luego en un dashboard.",
+  "license": "MIT",
+  "author": "",
+  "type": "module",
+  "main": "main.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": {
+    "@serialport/parser-readline": "^13.0.0",
+    "path": "^0.12.7",
+    "serialport": "^13.0.0"
+  }
+}