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156 lines
3.9 KiB
156 lines
3.9 KiB
/**************************************************************
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*
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* For this example, you need to install PubSubClient library:
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* https://github.com/knolleary/pubsubclient/releases/latest
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* or from http://librarymanager/all#PubSubClient
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*
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* TinyGSM Getting Started guide:
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* http://tiny.cc/tiny-gsm-readme
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*
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**************************************************************
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* Use Mosquitto client tools to work with MQTT
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* Ubuntu/Linux: sudo apt-get install mosquitto-clients
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* Windows: https://mosquitto.org/download/
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*
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* Subscribe for messages:
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* mosquitto_sub -h test.mosquitto.org -t GsmClientTest/init -t GsmClientTest/ledStatus -q 1
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* Toggle led:
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* mosquitto_pub -h test.mosquitto.org -t GsmClientTest/led -q 1 -m "toggle"
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*
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* You can use Node-RED for wiring together MQTT-enabled devices
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* https://nodered.org/
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* Also, take a look at these additional Node-RED modules:
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* node-red-contrib-blynk-websockets
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* node-red-dashboard
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*
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**************************************************************/
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// Select your modem:
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#define TINY_GSM_MODEM_SIM800
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// #define TINY_GSM_MODEM_SIM808
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// #define TINY_GSM_MODEM_SIM900
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// #define TINY_GSM_MODEM_A6
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// #define TINY_GSM_MODEM_A7
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// #define TINY_GSM_MODEM_M590
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// #define TINY_GSM_MODEM_ESP8266
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// #define TINY_GSM_MODEM_XBEE
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#include <TinyGsmClient.h>
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#include <PubSubClient.h>
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// Your GPRS credentials
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// Leave empty, if missing user or pass
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const char apn[] = "YourAPN";
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const char user[] = "";
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const char pass[] = "";
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// Use Hardware Serial on Mega, Leonardo, Micro
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#define SerialAT Serial1
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// or Software Serial on Uno, Nano
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//#include <SoftwareSerial.h>
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//SoftwareSerial SerialAT(2, 3); // RX, TX
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TinyGsm modem(SerialAT);
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TinyGsmClient client(modem);
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PubSubClient mqtt(client);
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const char* broker = "test.mosquitto.org";
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const char* topicLed = "GsmClientTest/led";
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const char* topicInit = "GsmClientTest/init";
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const char* topicLedStatus = "GsmClientTest/ledStatus";
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#define LED_PIN 13
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int ledStatus = LOW;
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long lastReconnectAttempt = 0;
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void setup() {
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pinMode(LED_PIN, OUTPUT);
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// Set console baud rate
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Serial.begin(115200);
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delay(10);
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// Set GSM module baud rate
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SerialAT.begin(115200);
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delay(3000);
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// Restart takes quite some time
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// To skip it, call init() instead of restart()
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Serial.println("Initializing modem...");
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modem.restart();
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String modemInfo = modem.getModemInfo();
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Serial.print("Modem: ");
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Serial.println(modemInfo);
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// Unlock your SIM card with a PIN
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//modem.simUnlock("1234");
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Serial.print("Waiting for network...");
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if (!modem.waitForNetwork()) {
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Serial.println(" fail");
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while (true);
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}
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Serial.println(" OK");
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Serial.print("Connecting to ");
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Serial.print(apn);
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if (!modem.gprsConnect(apn, user, pass)) {
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Serial.println(" fail");
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while (true);
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}
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Serial.println(" OK");
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// MQTT Broker setup
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mqtt.setServer(broker, 1883);
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mqtt.setCallback(mqttCallback);
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}
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boolean mqttConnect() {
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Serial.print("Connecting to ");
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Serial.print(broker);
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if (!mqtt.connect("GsmClientTest")) {
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Serial.println(" fail");
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return false;
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}
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Serial.println(" OK");
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mqtt.publish(topicInit, "GsmClientTest started");
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mqtt.subscribe(topicLed);
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return mqtt.connected();
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}
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void loop() {
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if (mqtt.connected()) {
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mqtt.loop();
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} else {
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// Reconnect every 10 seconds
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unsigned long t = millis();
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if (t - lastReconnectAttempt > 10000L) {
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lastReconnectAttempt = t;
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if (mqttConnect()) {
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lastReconnectAttempt = 0;
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}
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}
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}
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}
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void mqttCallback(char* topic, byte* payload, unsigned int len) {
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Serial.print("Message arrived [");
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Serial.print(topic);
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Serial.print("]: ");
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Serial.write(payload, len);
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Serial.println();
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// Only proceed if incoming message's topic matches
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if (String(topic) == topicLed) {
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ledStatus = !ledStatus;
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digitalWrite(LED_PIN, ledStatus);
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mqtt.publish(topicLedStatus, ledStatus ? "1" : "0");
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}
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}
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