{"id":1952,"date":"2018-12-17T14:30:46","date_gmt":"2018-12-17T19:30:46","guid":{"rendered":"http:\/\/blog.espol.edu.ec\/edelros\/?p=1952"},"modified":"2022-03-24T11:30:09","modified_gmt":"2022-03-24T16:30:09","slug":"mqtt-archivo-ino-mensajes-de-estado-led","status":"publish","type":"post","link":"https:\/\/blog.espol.edu.ec\/girni\/mqtt-archivo-ino-mensajes-de-estado-led\/","title":{"rendered":"3.3 MQTT - Archivo.ino - Mensajes de estado LED"},"content":{"rendered":"

Referencia<\/strong><\/em>: Librer\u00eda mqtt https:\/\/pubsubclient.knolleary.net\/api<\/a><\/p>\n

Para esta secci\u00f3n se supone que ha establecido la conexi\u00f3n a la red WiFi<\/a> y dispone de un un servidor\/broker MQTT de pruebas<\/a>,\u00a0 semejante a lo realizado en las secciones anteriores.<\/p>\n

\n

1. Bloque de inicio<\/h2>\n

Para MQTT se incluye la libreria PubSubClient.h<\/code> para la activaci\u00f3n de un cliente sobre WiFi. como se indica en las intrucciones siguientes:<\/p>\n

#include<\/span> <PubSubClient<\/span>.h >\r\n\r\n\/\/ Clientes WiFi y MQTT<\/span>\r\nWiFiClient<\/span> wificlient;\r\nPubSubClient <\/span>mqttclient(wificlient);\r\n<\/pre>\n
2. Configuraci\u00f3n de inicio setup()<\/h2>\n
Para el bloque de configuraci\u00f3n setup() se verifica el estado de la conexi\u00f3n WiFi antes del intento de conexi\u00f3n al broker MQTT-Mosquitto.<\/p>\n
  \/\/ conexi\u00f3n WIFI y MQTT<\/span>\r\n  inicia_wifi();\r\n  if<\/span> (WiFi.status<\/span>() == WL_CONNECTED){\r\n    inicia_mqtt();\r\n  }\r\n<\/pre>\n
El proceso inicia_mqtt()<\/code> se establecen los p\u00e1r\u00e1metros de servidor, identificaci\u00f3n de usario, conexi\u00f3n y la primera actualizaci\u00f3n de estado con pub<\/strong>\/sub<\/strong> que corresponda.<\/p>\n
3. Procedimientos MQTT<\/h2>\n
Se usa el procedimiento de inicio<\/strong> de conexi\u00f3n y de publica<\/strong>ci\u00f3n de estados con sensores. En el caso de actuador se a\u00f1ade el proceso de recepci\u00f3n de mensajes en el dispositivo (callback)<\/p>\n
3.1 Procedimiento inicia_mqtt()<\/h3>\n
Con los par\u00e1metros del broker y dispositivo se establece la conexi\u00f3n con el servidor (setServer<\/span>(), connect<\/span>()).<\/p>\n
Se tiene un periodo de espera<\/strong> mientras se parpadea el led y se presenta un punto en el puerto serial. En caso de que se verifica conexi\u00f3n se publica el estado inicial del sensor antes de volver al bucle de operaci\u00f3n.<\/p>\n
\"\"<\/a><\/p>\n
void<\/span> inicia_mqtt<\/span>(<\/span>)<\/span> {<\/span>\r\n \u00a0int<\/span> espera<\/span> =<\/span> 5<\/span>;<\/span>\r\n \u00a0int<\/span> cuenta<\/span> =<\/span> 0<\/span>;<\/span>\r\n \u00a0\r\n \u00a0mqttclient<\/span>.<\/span>setServer<\/span>(<\/span>MQTT_IP<\/span>,<\/span> MQTT_puerto<\/span>)<\/span>;<\/span>\r\n \u00a0mqttclient<\/span>.<\/span>connect<\/span>(<\/span>MQTT_ID<\/span>,<\/span> MQTT_usuario<\/span>,<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0MQTT_contrasena<\/span>)<\/span>;<\/span>\r\n \u00a0\/\/mqttclient.setCallback(callback);<\/span>\r\n\r\n \u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" MQTT Conectando a \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>MQTT_IP<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0while<\/span> (<\/span>!<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>&&<\/span>(<\/span>cuenta<\/span><=<\/span>espera<\/span>)<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0cuenta<\/span> =<\/span> cuenta<\/span> +<\/span> 1<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\r\n \u00a0\u00a0\u00a0\/\/ LED Monitor parpadeo MQTT, enciende LOW<\/span>\r\n \u00a0\u00a0\u00a0digitalWrite<\/span>(<\/span>LED_pin<\/span>,<\/span> LOW<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0delay<\/span>(<\/span>600<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0digitalWrite<\/span>(<\/span>LED_pin<\/span>,<\/span> HIGH<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0delay<\/span>(<\/span>400<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\".\"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0\/\/ Si conectado, inicializa estado<\/span>\r\n \u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0publica_mqtt<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\/\/Fin de \"....\"<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" MQTT Conectado: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" MQTT Estado: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>mqttclient<\/span>.<\/span>state<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n}<\/span>\r\n<\/pre>\n
Se a\u00f1aden algunos mensajes de estado hacia el computador como parte del proceso de depuraci\u00f3n en la etapa de desarrollo y programaci\u00f3n.<\/p>\n
El resultado de esta subrutina en la pantalla \"monitor_serie\"<\/code> es;<\/p>\n
inicia setup\r\n WIFI Conectando a miRouter\r\n.......\r\n Estado: 3\r\n MAC: 2C:3A:E8:0A:98:66\r\n IP: 192.168.10.11\r\n RSSI: -56\r\n\r\n MQTT Conectando a 192.168.10.50\r\nOFF\r\n\r\n MQTT Conectado: 1\r\n MQTT Estado: 0\r\nON\r\nOFF\r\nON\r\nOFF\r\nON\r\nOFF\r\n\r\n....\r\n\r\nOFF\r\nON\r\nMQTT desconectado\r\n MQTT Conectando a 192.168.10.50\r\n.....\r\n<\/pre>\n
Como una prueba de funcionamiento, al final se muestra el resultado al desconectar el cable del servidor MQTT.<\/p>\n
Estos par\u00e1metros se deben actualizar para cada dispositivo espec\u00edfico a desarrolar.<\/p>\n
Los valores para mqttclient.state() que se pueden obtener son:<\/p>\n
-4 : MQTT_CONNECTION_TIMEOUT - the server didn't respond within the keepalive time\r\n-3 : MQTT_CONNECTION_LOST - the network connection was broken\r\n-2 : MQTT_CONNECT_FAILED - the network connection failed\r\n-1 : MQTT_DISCONNECTED - the client is disconnected cleanly\r\n 0 : MQTT_CONNECTED - the client is connected<\/strong>\r\n 1 : MQTT_CONNECT_BAD_PROTOCOL - the server doesn't support the requested version of MQTT\r\n 2 : MQTT_CONNECT_BAD_CLIENT_ID - the server rejected the client identifier\r\n 3 : MQTT_CONNECT_UNAVAILABLE - the server was unable to accept the connection\r\n 4 : MQTT_CONNECT_BAD_CREDENTIALS - the username\/password were rejected\r\n 5 : MQTT_CONNECT_UNAUTHORIZED - the client was not authorized to connect\r\n<\/pre>\n
Referencia<\/em><\/strong>: https:\/\/pubsubclient.knolleary.net\/api<\/a><\/p>\n
3.2 Procedimiento publica_mqtt()<\/h3>\n
La publicaci\u00f3n de estados se realiza como una subrutina, en el ejemplo es solo encendido y apagado de un LED<\/p>\n
\"\"<\/a><\/p>\n
\/\/ Publicar el estados del dispositivo<\/span>\r\nvoid<\/span> publica_mqtt<\/span>(<\/span>)<\/span> {<\/span>\r\n \u00a0\r\n \u00a0\/\/ formato para envio (Texto)<\/span>\r\n \u00a0if<\/span> (<\/span>sensor_estado<\/span> ==<\/span> true<\/span> )<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0snprintf<\/span>(<\/span>MQTT_SensorEstado<\/span>,<\/span>10<\/span>,<\/span> \"ON\"<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>else<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0snprintf<\/span>(<\/span>MQTT_SensorEstado<\/span>,<\/span>10<\/span>,<\/span> \"OFF\"<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n\r\n \u00a0\/\/ publicar estados<\/span>\r\n \u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>==<\/span>true<\/span>)<\/span> {<\/span>\r\n \u00a0\u00a0\u00a0mqttclient<\/span>.<\/span>publish<\/span>(<\/span>MQTT_TOPIC<\/span>,<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0MQTT_SensorEstado<\/span>,<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0true<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n\r\n \u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>==<\/span>true<\/span>)<\/span> {<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>MQTT_SensorEstado<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>==<\/span>false<\/span>)<\/span> {<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>\"MQTT desconectado\"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0}<\/span>\r\n}<\/span>\r\n<\/pre>\n
\n
4. Instrucciones Arduino<\/h2>\n
Las instrucciones usadas para que el estado del parpadeo de un LED se transmita al broker MQTT se incluyen en para la parte principal en la pesta\u00f1a principal.<\/p>\n
\"\"<\/a><\/p>\n
\/* ESP8266\/ESP32 Sensor LED Parpadea. <\/span>\r\n * edelros@espol.edu.ec<\/span>\r\n * Actualice: WIFI:Router, MQTT:Servidor, MQTT:Dispositivo<\/span>\r\n * ESP-01, NO USE Serial.print()<\/span>\r\n*\/<\/span>\r\n\/\/ detectar placa al compilar<\/span>\r\n# ifdef<\/span> defined<\/span>(<\/span>ESP8266<\/span>)<\/span>\r\n \u00a0#include<\/span> <<\/span>ESP8266WiFi<\/span>.<\/span>h<\/span>><\/span>\r\n# elif<\/span> defined<\/span>(<\/span>ESP32<\/span>)<\/span>\r\n \u00a0#include<\/span> <<\/span>WiFi<\/span><\/b>.<\/span>h<\/span>><\/span>\r\n# endif<\/span>\r\n#include<\/span> <<\/span>PubSubClient<\/span><\/b>.<\/span>h<\/span>><\/span>\r\n\/\/ Clientes WiFi y MQTT<\/span>\r\nWiFiClient<\/span><\/b> wificlient<\/span>;<\/span>\r\nPubSubClient<\/span><\/b> mqttclient<\/span>(<\/span>wificlient<\/span>)<\/span>;<\/span>\r\n\r\n\/\/ WIFI: conexi\u00f3n a Router<\/span>\r\nchar<\/span>*<\/span> ssid<\/span> =<\/span> \"miRouter\"<\/span>;<\/span>\r\nchar<\/span>*<\/span> password<\/span> =<\/span> \"miRouterClave\"<\/span>;<\/span>\r\n\r\n\/\/ MQTT: Servidor<\/span>\r\nchar<\/span>*<\/span> MQTT_IP<\/span> =<\/span> \"192.168.10.50\"<\/span>;<\/span>\r\nuint16_t<\/span> MQTT_puerto<\/span> =<\/span> 1883<\/span>;<\/span>\r\nchar<\/span>*<\/span> MQTT_usuario<\/span> =<\/span> \"usuarioprueba\"<\/span>;<\/span>\r\nchar<\/span>*<\/span> MQTT_contrasena<\/span> =<\/span> \"usuarioclave\"<\/span>;<\/span>\r\n\r\n\/\/ MQTT: Dispositivo<\/span>\r\nchar<\/span>*<\/span> MQTT_ID<\/span> =<\/span> \"Dispositivo\"<\/span>;<\/span>\r\nchar<\/span>*<\/span> MQTT_TOPIC<\/span> =<\/span> \"oficina\/mensaje\"<\/span>;<\/span>\r\nchar<\/span> MQTT_SensorEstado<\/span>[<\/span>10<\/span>]<\/span> =<\/span> \"OFF\"<\/span>;<\/span>\r\nboolean<\/span> mqtt_desconectado<\/span> =<\/span> true<\/span>;<\/span>\r\n\r\n\/\/ Sensor <\/span>\r\nconst<\/span> uint8_t<\/span> sensor_pin<\/span> =<\/span> 1<\/span>;<\/span>\r\nvolatile<\/span> boolean<\/span> sensor_estado<\/span> \u00a0=<\/span> false<\/span>;<\/span>\r\n\r\n\/\/ LED monitor interno: ESP01-pin=1, ESP07-pin=2<\/span>\r\nconst<\/span> uint8_t<\/span> LED_pin<\/span> =<\/span> 2<\/span>;<\/span>\r\n\r\n\/\/ Mensajes por Puerto Serial<\/span>\r\nvolatile<\/span> boolean<\/span> serial_msg<\/span> =<\/span> true<\/span>;<\/span>\r\n\r\nvoid<\/span> setup<\/span>(<\/span>)<\/span> {<\/span>\r\n\r\n \u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>begin<\/span>(<\/span>115200<\/span>)<\/span>;<\/span>\/\/74880, 115200<\/span>\r\n \u00a0\u00a0\u00a0while<\/span> (<\/span>!<\/span>Serial<\/span><\/b>)<\/span>{<\/span>delay<\/span>(<\/span>50<\/span>)<\/span>;<\/span>}<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>\"inicia setup\"<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0\/\/ LED monitor, Enciende en LOW<\/span>\r\n \u00a0pinMode<\/span>(<\/span>LED_pin<\/span>,<\/span> OUTPUT<\/span>)<\/span>;<\/span>\r\n\r\n \u00a0\/\/ conexi\u00f3n WIFI y MQTT<\/span>\r\n \u00a0inicia_wifi<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0if<\/span> (<\/span>WiFi<\/span><\/b>.<\/span>status<\/span>(<\/span>)<\/span> ==<\/span> WL_CONNECTED<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0inicia_mqtt<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n}<\/span>\r\n\r\nvoid<\/span> loop<\/span>(<\/span>)<\/span> {<\/span>\r\n \u00a0\/\/ Parpadea estado de sensor<\/span>\r\n \u00a0if<\/span> (<\/span>sensor_estado<\/span>==<\/span>true<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0sensor_estado<\/span> =<\/span> false<\/span>;<\/span>\r\n \u00a0}<\/span>else<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0sensor_estado<\/span> =<\/span> true<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0\/\/ LED Monitor Parpadea, enciende en LOW<\/span>\r\n \u00a0if<\/span> (<\/span>sensor_estado<\/span> ==<\/span>true<\/span>)<\/span> {<\/span>\r\n \u00a0\u00a0\u00a0digitalWrite<\/span>(<\/span>LED_pin<\/span>,<\/span> LOW<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0delay<\/span>(<\/span>1000<\/span>)<\/span>;<\/span> \/\/ un segundo<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0#ifdef<\/span> defined<\/span>(<\/span>ESP8266<\/span>)<\/span>\r\n \u00a0\u00a0\u00a0yield<\/span>(<\/span>)<\/span>;<\/span> \/\/ procesa wifi<\/span>\r\n \u00a0#endif<\/span>\r\n \u00a0\r\n \u00a0if<\/span> (<\/span>sensor_estado<\/span> ==<\/span>false<\/span>)<\/span> {<\/span>\r\n \u00a0\u00a0\u00a0digitalWrite<\/span>(<\/span>LED_pin<\/span>,<\/span> HIGH<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0delay<\/span>(<\/span>1000<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n\r\n \u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>==<\/span>true<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0publica_mqtt<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>\r\n \u00a0\r\n \u00a0\/\/Revisa estado de Wifi o reintenta conexi\u00f3n \u00a0<\/span>\r\n \u00a0if<\/span> (<\/span>WiFi<\/span><\/b>.<\/span>status<\/span>(<\/span>)<\/span> !=<\/span> WL_CONNECTED<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0inicia_wifi<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0}<\/span>else<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>==<\/span>false<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0inicia_mqtt<\/span>(<\/span>)<\/span>;<\/span> \/\/ reintento<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>mqttclient<\/span>.<\/span>connected<\/span>(<\/span>)<\/span>==<\/span>true<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0mqttclient<\/span>.<\/span>loop<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0}<\/span>\r\n \u00a0#ifdef<\/span> defined<\/span>(<\/span>ESP8266<\/span>)<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0yield<\/span>(<\/span>)<\/span>;<\/span> \/\/ procesa wifi<\/span>\r\n \u00a0#endif<\/span>\r\n}<\/span> \r\n<\/pre>\n
Si no se ha implementado el broker MQTT solo obtendr\u00e1 mensajes de \"MQTT desconectado\".<\/p>\n
Al final, recuerde a\u00f1adir los otros procedimientos inicia_wifi(), inicia_mqtt(), publica_mqtt().<\/p>\n
void<\/span> inicia_wifi<\/span>(<\/span>)<\/span>{<\/span>\r\n \u00a0int<\/span> espera<\/span> =<\/span> 10<\/span>;<\/span> \/\/ >=10 para conectar<\/span>\r\n \u00a0int<\/span> cuenta<\/span> =<\/span> 0<\/span>;<\/span>\r\n\r\n \u00a0\/\/ mensajes por serial activado<\/span>\r\n \u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" WIFI Conectando a \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>ssid<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0\r\n \u00a0WiFi<\/span><\/b>.<\/span>mode<\/span>(<\/span>WIFI_STA<\/span>)<\/span>;<\/span>\r\n \u00a0WiFi<\/span><\/b>.<\/span>begin<\/span>(<\/span>ssid<\/span>,<\/span> password<\/span>)<\/span>;<\/span>\r\n \u00a0\r\n \u00a0while<\/span> (<\/span>(<\/span>WiFi<\/span><\/b>.<\/span>status<\/span>(<\/span>)<\/span>!=<\/span>WL_CONNECTED<\/span>)<\/span>&&<\/span>(<\/span>cuenta<\/span><<\/span>espera<\/span>)<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0cuenta<\/span> =<\/span> cuenta<\/span>+<\/span>1<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\r\n \u00a0\u00a0\u00a0\/\/ Parpadeo de Monitor enciende en LOW<\/span>\r\n \u00a0\u00a0\u00a0digitalWrite<\/span>(<\/span>LED_pin<\/span>,<\/span> LOW<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0delay<\/span>(<\/span>300<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0digitalWrite<\/span>(<\/span>LED_pin<\/span>,<\/span> HIGH<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0delay<\/span>(<\/span>200<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\".\"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0}<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n\r\n \u00a0\/\/activado mensajes por serial<\/span>\r\n \u00a0if<\/span> (<\/span>serial_msg<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>)<\/span>;<\/span> \u00a0\/\/Fin de \"...\"<\/span>\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>WiFi<\/span><\/b>.<\/span>status<\/span>(<\/span>)<\/span> ==<\/span> WL_CONNECTED<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" Estado: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>WiFi<\/span><\/b>.<\/span>status<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" MAC: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>WiFi<\/span><\/b>.<\/span>macAddress<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" IP: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>WiFi<\/span><\/b>.<\/span>localIP<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" RSSI: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>WiFi<\/span><\/b>.<\/span>RSSI<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>print<\/span>(<\/span>\" Canal: \"<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>WiFi<\/span><\/b>.<\/span>channel<\/span>(<\/span>)<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0}<\/span>\r\n \u00a0\u00a0\u00a0if<\/span> (<\/span>WiFi<\/span><\/b>.<\/span>status<\/span>(<\/span>)<\/span> !=<\/span> WL_CONNECTED<\/span>)<\/span>{<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0WiFi<\/span><\/b>.<\/span>printDiag<\/span>(<\/span>Serial<\/span><\/b>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0Serial<\/span><\/b>.<\/span>println<\/span>(<\/span>)<\/span>;<\/span>\r\n \u00a0\u00a0\u00a0\u00a0\u00a0}<\/span>\r\n \u00a0\u00a0\u00a0}<\/span>\r\n \u00a0}<\/span>\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Referencia: Librer\u00eda mqtt https:\/\/pubsubclient.knolleary.net\/api Para esta secci\u00f3n se supone que ha establecido la conexi\u00f3n a la red WiFi y dispone de un un servidor\/broker MQTT de pruebas,\u00a0 semejante a lo realizado en las secciones anteriores. 1. Bloque de inicio Para MQTT se incluye la libreria PubSubClient.h para la activaci\u00f3n de un cliente sobre WiFi. como … <\/p>\n
Continuar leyendo \"3.3 MQTT - Archivo.ino - Mensajes de estado LED\"<\/span><\/a><\/p>\n","protected":false},"author":8043,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1464959],"tags":[],"class_list":["post-1952","post","type-post","status-publish","format-standard","hentry","category-3-iot-mqtt-mensajes-de-estado-accion"],"_links":{"self":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts\/1952","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/users\/8043"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/comments?post=1952"}],"version-history":[{"count":25,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts\/1952\/revisions"}],"predecessor-version":[{"id":3745,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts\/1952\/revisions\/3745"}],"wp:attachment":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/media?parent=1952"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/categories?post=1952"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/tags?post=1952"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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