110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
/* Usage:
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ESP will subscribe to mqtt topic "ssid/macAddress" waiting for tri State codes to be sent.
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Where
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- "ssid" is the ssid of the wifi, the esp will connect and
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- "macAddress" is the hardware address of the esp itself
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Upon mqtt connect the device will publish an "online" message to the same topic.
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To send commands to the device use mosquitto_pub e.g.
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mosquitto_pub -t myWifi/18fe349bde2c -m '0FF00FF0FFF0'
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*/
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#include <ESP8266WiFi.h>
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#include <PubSubClient.h>
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#include <RCSwitch.h>
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// Update these with values suitable for your network.
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const char* ssid = "myWifi";
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const char* password = "s3cr3t";
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const char* mqtt_server = "mqtt.is.sexy";
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const int mqtt_port = 1883;
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WiFiClient espClient;
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PubSubClient mqttClient(espClient);
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RCSwitch rcSwitch = RCSwitch();
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char mac[13];
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char mqttTopic[65];
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void setup() {
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Serial.begin(115200);
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setup_wifi();
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setup_mqtt();
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setup_rcSwitch();
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}
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void setup_rcSwitch() {
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rcSwitch.enableTransmit(2);
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}
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void setup_mqtt() {
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mqttClient.setServer(mqtt_server, mqtt_port);
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mqttClient.setCallback(mqtt_recv);
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snprintf (mqttTopic, 64, "%s/%s", ssid, mac);
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}
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void setup_wifi() {
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Serial.println();
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uint8_t mac_t[6];
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WiFi.macAddress(mac_t);
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sprintf(mac,"%02x%02x%02x%02x%02x%02x",mac_t[0],mac_t[1],mac_t[2],mac_t[3],mac_t[4],mac_t[5]);
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Serial.println(sprintf("Client MAC Address: %s",mac));
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Serial.print("Connecting to ");
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Serial.println(ssid);
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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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Serial.print(".");
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}
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Serial.println("WiFi connected");
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Serial.print(" IP address: ");
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Serial.println(WiFi.localIP());
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}
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void mqtt_recv(char* topic, byte* payload, unsigned int length) {
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/*
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Serial.print(topic);
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Serial.print(": ");
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for (int i = 0; i < length; i++) {
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Serial.print((char)payload[i]);
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}
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Serial.println();
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*/
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char *cmd = (char*)malloc(length + 2);
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snprintf(cmd,length + 1,"%s",(char*)payload);
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mqttClient.publish("esp8266/debug",cmd);
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rcSwitch.sendTriState((char*)cmd);
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delay(1000);
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}
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void mqtt_reconnect() {
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while (!mqttClient.connected()) {
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Serial.print("Attempting MQTT connection...");
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if (mqttClient.connect("ESP8266Client")) {
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Serial.println("connected");
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mqttClient.publish(mqttTopic, "reconnected");
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mqttClient.subscribe(mqttTopic);
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} else {
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Serial.print("failed, rc=");
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Serial.print(mqttClient.state());
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Serial.println();
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delay(5000);
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}
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}
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if(mqttClient.loop()) {
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delay(200);
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}
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}
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void loop() {
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mqtt_reconnect();
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}
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