287 lines
7.7 KiB
C++
287 lines
7.7 KiB
C++
#include <ESPMegaIoT.hpp>
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ESPMegaIoT::ESPMegaIoT() : mqtt(tcpClient)
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{
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tcpClient.setTimeout(1);
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// Initialize the components array
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for (int i = 0; i < 255; i++)
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{
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components[i] = NULL;
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}
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active = false;
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mqtt_connected = false;
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}
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void ESPMegaIoT::mqttCallback(char *topic, byte *payload, unsigned int length)
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{
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// Create a null terminated string from the payload
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memcpy(payload_buffer, payload, length);
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payload_buffer[length] = '\0';
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// Remove the base topic from the topic
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char *topic_without_base = topic + strlen(base_topic) + 1;
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if (user_relative_mqtt_callback != NULL)
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{
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user_relative_mqtt_callback(topic_without_base + 3, payload_buffer);
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}
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if (user_mqtt_callback != NULL)
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{
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user_mqtt_callback(topic, payload_buffer);
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}
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// Call the respective card's mqtt callback
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// Note that after the base topic, there should be the card id
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// /base_topic/card_id/...
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// First, get the card id in integer form
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char *card_id_str = strtok(topic_without_base, "/");
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uint8_t card_id = atoi(card_id_str);
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// Check if the card is registered
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if (components[card_id] == NULL)
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{
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return;
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}
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components[card_id]->handleMqttMessage(topic_without_base + 3, payload_buffer);
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}
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void ESPMegaIoT::setBaseTopic(char *base_topic)
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{
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strcpy(this->base_topic, base_topic);
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base_topic_length = strlen(base_topic);
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}
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void ESPMegaIoT::intr_begin(ExpansionCard *cards[])
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{
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this->cards = cards;
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active = true;
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}
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void ESPMegaIoT::loop()
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{
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if (!active)
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return;
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// Call each component's loop function
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for (int i = 0; i < 255; i++)
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{
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if (components[i] != NULL)
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{
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components[i]->loop();
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}
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}
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mqtt.loop();
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sessionKeepAlive();
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}
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// Register Existing Card for use with IoT
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void ESPMegaIoT::registerCard(uint8_t card_id)
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{
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// Check if the card is already registered
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if (components[card_id] != NULL)
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{
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return;
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}
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// Get the card type
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uint8_t card_type = cards[card_id]->getType();
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// Create the respective IoT component
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switch (card_type)
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{
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// case CARD_TYPE_ANALOG:
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// components[card_id] = new AnalogIoT();
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// components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
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// break;
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// case CARD_TYPE_DIGITAL_INPUT:
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// components[card_id] = new DigitalInputIoT();
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// components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
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// break;
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case CARD_TYPE_DIGITAL_OUTPUT:
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components[card_id] = new DigitalOutputIoT();
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components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
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if (mqtt_connected)
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{
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components[card_id]->subscribe();
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Serial.pritnln("Back to register card");
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}
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break;
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default:
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Serial.println("Invalid card type");
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return;
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}
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Serial.println("Card registered");
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}
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void ESPMegaIoT::deregisterCard(uint8_t card_id)
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{
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// Check if the card is registered
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if (components[card_id] == NULL)
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{
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return;
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}
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// Delete the IoT component
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delete components[card_id];
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components[card_id] = NULL;
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}
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void ESPMegaIoT::publishCard(uint8_t card_id)
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{
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// Check if the card is registered
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if (components[card_id] == NULL)
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{
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return;
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}
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// Publish the card
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components[card_id]->publishReport();
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}
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void ESPMegaIoT::subscribeToTopic(char *topic)
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{
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mqtt.subscribe(topic);
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}
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void ESPMegaIoT::unsubscribeFromTopic(char *topic)
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{
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mqtt.unsubscribe(topic);
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}
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void ESPMegaIoT::connectToWifi(char *ssid, char *password)
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{
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WiFi.begin(ssid, password);
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}
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void ESPMegaIoT::connectToWifi(char *ssid)
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{
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WiFi.begin(ssid);
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}
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void ESPMegaIoT::disconnectFromWifi()
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{
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WiFi.disconnect();
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}
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bool ESPMegaIoT::wifiConnected()
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{
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return WiFi.status() == WL_CONNECTED;
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}
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bool ESPMegaIoT::connectToMqtt(char *client_id, char *mqtt_server, uint16_t mqtt_port, char *mqtt_user, char *mqtt_password)
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{
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// Store mqtt connection parameters
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this->mqtt_server = mqtt_server;
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this->mqtt_port = mqtt_port;
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this->mqtt_user = mqtt_user;
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this->mqtt_password = mqtt_password;
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this->mqtt_useauth = true;
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this->client_id = client_id;
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mqtt.setServer(mqtt_server, mqtt_port);
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auto boundCallback = std::bind(&ESPMegaIoT::mqttCallback, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
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mqtt.setCallback(boundCallback);
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if (mqtt.connect(client_id, mqtt_user, mqtt_password))
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{
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sessionKeepAlive();
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mqttSubscribe();
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mqtt_connected = true;
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return true;
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}
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mqtt_connected = false;
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return false;
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}
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bool ESPMegaIoT::connectToMqtt(char *client_id, char *mqtt_server, uint16_t mqtt_port)
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{
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// Store mqtt connection parameters
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Serial.println("Storing mqtt connection parameters");
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this->mqtt_server = mqtt_server;
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this->mqtt_port = mqtt_port;
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this->mqtt_useauth = false;
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this->client_id = client_id;
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Serial.println("Setting mqtt server");
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mqtt.setServer(mqtt_server, mqtt_port);
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Serial.println("Setting mqtt callback");
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auto boundCallback = std::bind(&ESPMegaIoT::mqttCallback, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
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mqtt.setCallback(boundCallback);
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Serial.println("Connecting to mqtt");
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if (mqtt.connect(client_id))
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{
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Serial.println("Connected to mqtt");
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Serial.println("Calling session keep alive");
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sessionKeepAlive();
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Serial.println("Subscribing to topics");
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mqttSubscribe();
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mqtt_connected = true;
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return true;
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}
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Serial.println("Failed to connect to mqtt");
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mqtt_connected = false;
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return false;
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}
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void ESPMegaIoT::disconnectFromMqtt()
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{
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mqtt.disconnect();
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}
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void ESPMegaIoT::publishToTopic(char *topic, char *payload)
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{
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mqtt.publish(topic, payload);
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}
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void ESPMegaIoT::registerMqttCallback(void (*callback)(char *, char *))
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{
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user_mqtt_callback = callback;
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}
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void ESPMegaIoT::mqttSubscribe()
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{
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Serial.println("MQTT Subscribe Activated");
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if (user_subscribe_callback != NULL)
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{
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user_subscribe_callback();
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}
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// Subscribe to all topics
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for (int i = 0; i < 255; i++)
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{
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if (components[i] != NULL)
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{
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components[i]->subscribe();
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}
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}
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}
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void ESPMegaIoT::publishRelative(uint8_t card_id, char *topic, char *payload)
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{
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char absolute_topic[100];
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sprintf(absolute_topic, "%s/%d/%s", base_topic, card_id, topic);
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mqtt.publish(absolute_topic, payload);
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}
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bool ESPMegaIoT::mqttReconnect()
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{
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if (mqtt_useauth)
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{
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return this->connectToMqtt(client_id, mqtt_server, mqtt_port, mqtt_user, mqtt_password);
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}
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else
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{
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return this->connectToMqtt(client_id, mqtt_server, mqtt_port);
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}
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}
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void ESPMegaIoT::sessionKeepAlive()
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{
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static unsigned long lastSessionKeepAlive = 0;
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if (millis() - lastSessionKeepAlive > 30000)
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{
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lastSessionKeepAlive = millis();
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// Check if mqtt is connected
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if (!mqtt.connected())
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{
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// Try to reconnect
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mqtt_connected = mqttReconnect();
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}
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}
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}
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void ESPMegaIoT::registerRelativeMqttCallback(void (*callback)(char *, char *))
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{
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user_relative_mqtt_callback = callback;
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}
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void ESPMegaIoT::publishRelative(char *topic, char *payload)
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{
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char absolute_topic[100];
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sprintf(absolute_topic, "%s/%s", base_topic, topic);
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mqtt.publish(absolute_topic, payload);
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}
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void ESPMegaIoT::subscribeRelative(char *topic)
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{
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char absolute_topic[100];
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sprintf(absolute_topic, "%s/%s", base_topic, topic);
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mqtt.subscribe(absolute_topic);
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}
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void ESPMegaIoT::registerSubscribeCallback(void (*callback)(void))
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{
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user_subscribe_callback = callback;
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} |