2021-08-01 11:23:07 +02:00
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/**********************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Nis Wechselberg
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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**********************************************************************/
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/**********************************************************************
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* ESP8266-MQTT-BenQ-BeamerControl
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*
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* Links the ESP8266 based serial beamer control board to an mqtt broker.
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* The program uses multiple topics for incoming and outgoing messages.
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* Incoming topics:
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* - <mqtt_device>/power
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* Outgoing topics:
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*
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**********************************************************************/
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#include <ESP8266WiFi.h>
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#include <ESP8266mDNS.h>
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#include <WiFiUdp.h>
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#include <ArduinoOTA.h>
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#include <PubSubClient.h>
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#include "ESP8266-MQTT-Aten-MagicBox.h"
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// Timestamp for last publish
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long lastMsg = 0;
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long publishInterval = 5000;
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// Global mqtt client object
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WiFiClient espClient;
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PubSubClient client(espClient);
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/*
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* Initial setup for arduino
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*/
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void setup() {
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// Configure serial port
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Serial.begin(19200);
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delay(10);
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// Prepare WiFi connection
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setup_wifi();
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// Connect to mqtt broker
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client.setServer(mqtt_server, 1883);
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client.setCallback(incoming_mqtt);
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}
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/*
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* Prepares the wireless connection
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*/
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void setup_wifi() {
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// Connect to the WiFi as a client
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WiFi.mode(WIFI_STA);
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// Do the connection
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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}
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ArduinoOTA.setHostname(ota_hostname);
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ArduinoOTA.setPassword(ota_hostname);
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ArduinoOTA.begin();
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}
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/*
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* Callback method for incoming mqtt messages
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*/
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void incoming_mqtt(char* topic, byte* payload, unsigned int length) {
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if (strcmp(topic, mqtt_topic_port) == 0) {
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if (length == 1) {
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// Select the port
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Serial.print("\rsw i0");
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Serial.print((char)payload[0]);
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Serial.print("\r");
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}
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}
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}
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/*
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* Blocking reconnect to the mqtt broker
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*/
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void reconnect() {
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// Loop until we're reconnected
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while (!client.connected()) {
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// Attempt to connect
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if (client.connect(mqtt_device)) {
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// subscribe to incoming topics
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client.subscribe(mqtt_topic_port);
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} else {
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// Wait 5 seconds before retrying
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delay(5000);
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}
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}
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}
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void clearSerialInput() {
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while(Serial.available() > 0) {
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char t = Serial.read();
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}
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}
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void updateState() {
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Serial.print("\r");
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delay(250);
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// Clean input buffer
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clearSerialInput();
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// Write request to serial
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Serial.print("read\r");
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delay(250);
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// Extract lamp time from response
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String message = Serial.readString();
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int startIndex = message.lastIndexOf("Input:port");
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if (startIndex != -1) {
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String state = message.substring(startIndex + 11, startIndex + 12);
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char buffer[2];
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state.toCharArray(buffer, 2);
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client.publish(mqtt_topic_portState, buffer);
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}
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}
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void loop() {
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// Check OTA update
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ArduinoOTA.handle();
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// Ensure MQTT connection
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if (!client.connected()) {
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reconnect();
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}
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// Check the inbox
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client.loop();
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// Maybe push the current status
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long now = millis();
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if (now - lastMsg > publishInterval) {
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lastMsg = now;
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updateState();
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}
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}
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