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ESPMegaPRO-v3-SDK
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working mqtt implementation

This commit is contained in:
Siwat Sirichai 2023-12-28 15:52:08 +07:00
parent 1163f2e30f
commit bb2991cb2d
6 changed files with 149 additions and 76 deletions
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11
Template Project/lib/ESPMegaPRO/DigitalOutputIoT.cpp
View File

@ -11,6 +11,8 @@ DigitalOutputIoT::~DigitalOutputIoT() {
}
bool DigitalOutputIoT::begin(uint8_t card_id, ExpansionCard *card, PubSubClient *mqtt, char *base_topic) {
Serial.print("Initializing digital output IoT component for card ");
Serial.println(card_id);
this->mqtt = mqtt;
this->base_topic = base_topic;
this->card = (DigitalOutputCard *) card;
@ -171,22 +173,27 @@ uint8_t DigitalOutputIoT::getType() {
}
void DigitalOutputIoT::subscribe() {
Serial.println("Subscribing to digital output topics");
char topic[10];
Serial.println("Subscribe to all set state topics");
// Subscribe to all set state topics
for(int i = 1; i <= 16; i++) {
char topic[10];
sprintf(topic, "%02d/set/state", i);
subscribeRelative(topic);
}
Serial.println("Subscribe to all set value topics");
// Subscribe to all set value topics
for(int i = 1; i <= 16; i++) {
char topic[10];
sprintf(topic, "%02d/set/value", i);
subscribeRelative(topic);
}
Serial.println("Subscribe to request state topic");
// Subscribe to request state topic
subscribeRelative(REQUEST_STATE_TOPIC);
Serial.println("Subscribe to publish enable topic");
// Subscribe to publish enable topic
subscribeRelative(PUBLISH_ENABLE_TOPIC);
Serial.println("Subscriptions complete");
}
void DigitalOutputIoT::loop() {

181
Template Project/lib/ESPMegaPRO/ESPMegaIoT.cpp
View File

@ -1,21 +1,32 @@
#include <ESPMegaIoT.hpp>
ESPMegaIoT::ESPMegaIoT() : mqtt(tcpClient) {
ESPMegaIoT::ESPMegaIoT() : mqtt(tcpClient)
{
tcpClient.setTimeout(1);
// Initialize the components array
for (int i = 0; i < 255; i++) {
for (int i = 0; i < 255; i++)
{
components[i] = NULL;
}
active = false;
mqtt_connected = false;
}
void ESPMegaIoT::mqttCallback(char *topic, byte *payload, unsigned int length) {
void ESPMegaIoT::mqttCallback(char *topic, byte *payload, unsigned int length)
{
// Create a null terminated string from the payload
memcpy(payload_buffer, payload, length);
payload_buffer[length] = '\0';
// Remove the base topic from the topic
char *topic_without_base = topic + strlen(base_topic) + 1;
if (user_relative_mqtt_callback != NULL)
{
user_relative_mqtt_callback(topic_without_base + 3, payload_buffer);
}
if (user_mqtt_callback != NULL)
{
user_mqtt_callback(topic, payload_buffer);
}
// Call the respective card's mqtt callback
// Note that after the base topic, there should be the card id
// /base_topic/card_id/...
@ -23,33 +34,33 @@ void ESPMegaIoT::mqttCallback(char *topic, byte *payload, unsigned int length) {
char *card_id_str = strtok(topic_without_base, "/");
uint8_t card_id = atoi(card_id_str);
// Check if the card is registered
if (components[card_id] == NULL) {
if (components[card_id] == NULL)
{
return;
}
components[card_id]->handleMqttMessage(topic_without_base + 3, payload_buffer);
if (user_relative_mqtt_callback != NULL) {
user_relative_mqtt_callback(topic_without_base + 3, payload_buffer);
}
if (user_mqtt_callback != NULL) {
user_mqtt_callback(topic, payload_buffer);
}
}
void ESPMegaIoT::setBaseTopic(char *base_topic) {
void ESPMegaIoT::setBaseTopic(char *base_topic)
{
strcpy(this->base_topic, base_topic);
base_topic_length = strlen(base_topic);
}
void ESPMegaIoT::intr_begin(ExpansionCard *cards[]) {
void ESPMegaIoT::intr_begin(ExpansionCard *cards[])
{
this->cards = cards;
active = true;
}
void ESPMegaIoT::loop() {
if(!active)
void ESPMegaIoT::loop()
{
if (!active)
return;
// Call each component's loop function
for (int i = 0; i < 255; i++) {
if (components[i] != NULL) {
for (int i = 0; i < 255; i++)
{
if (components[i] != NULL)
{
components[i]->loop();
}
}
@ -58,78 +69,100 @@ void ESPMegaIoT::loop() {
}
// Register Existing Card for use with IoT
void ESPMegaIoT::registerCard(uint8_t card_id) {
void ESPMegaIoT::registerCard(uint8_t card_id)
{
// Check if the card is already registered
if (components[card_id] != NULL) {
if (components[card_id] != NULL)
{
return;
}
// Get the card type
uint8_t card_type = cards[card_id]->getType();
// Create the respective IoT component
switch (card_type) {
case CARD_TYPE_ANALOG:
components[card_id] = new AnalogIoT();
components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
break;
case CARD_TYPE_DIGITAL_INPUT:
components[card_id] = new DigitalInputIoT();
components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
break;
switch (card_type)
{
// case CARD_TYPE_ANALOG:
// components[card_id] = new AnalogIoT();
// components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
// break;
// case CARD_TYPE_DIGITAL_INPUT:
// components[card_id] = new DigitalInputIoT();
// components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
// break;
case CARD_TYPE_DIGITAL_OUTPUT:
components[card_id] = new DigitalOutputIoT();
components[card_id]->begin(card_id, cards[card_id], &mqtt, base_topic);
if (mqtt_connected)
{
components[card_id]->subscribe();
Serial.pritnln("Back to register card");
}
break;
default:
Serial.println("Invalid card type");
return;
}
Serial.println("Card registered");
}
void ESPMegaIoT::deregisterCard(uint8_t card_id) {
void ESPMegaIoT::deregisterCard(uint8_t card_id)
{
// Check if the card is registered
if (components[card_id] == NULL) {
if (components[card_id] == NULL)
{
return;
}
// Delete the IoT component
delete components[card_id];
components[card_id] = NULL;
}
void ESPMegaIoT::publishCard(uint8_t card_id) {
void ESPMegaIoT::publishCard(uint8_t card_id)
{
// Check if the card is registered
if (components[card_id] == NULL) {
if (components[card_id] == NULL)
{
return;
}
// Publish the card
components[card_id]->publishReport();
}
void ESPMegaIoT::subscribeToTopic(char *topic) {
void ESPMegaIoT::subscribeToTopic(char *topic)
{
mqtt.subscribe(topic);
}
void ESPMegaIoT::unsubscribeFromTopic(char *topic) {
void ESPMegaIoT::unsubscribeFromTopic(char *topic)
{
mqtt.unsubscribe(topic);
}
void ESPMegaIoT::connectToWifi(char *ssid, char *password) {
void ESPMegaIoT::connectToWifi(char *ssid, char *password)
{
WiFi.begin(ssid, password);
}
void ESPMegaIoT::connectToWifi(char *ssid) {
void ESPMegaIoT::connectToWifi(char *ssid)
{
WiFi.begin(ssid);
}
void ESPMegaIoT::disconnectFromWifi() {
void ESPMegaIoT::disconnectFromWifi()
{
WiFi.disconnect();
}
bool ESPMegaIoT::wifiConnected() {
bool ESPMegaIoT::wifiConnected()
{
return WiFi.status() == WL_CONNECTED;
}
bool ESPMegaIoT::connectToMqtt(char*client_id, char *mqtt_server, uint16_t mqtt_port, char *mqtt_user, char *mqtt_password) {
bool ESPMegaIoT::connectToMqtt(char *client_id, char *mqtt_server, uint16_t mqtt_port, char *mqtt_user, char *mqtt_password)
{
// Store mqtt connection parameters
this->mqtt_server = mqtt_server;
this->mqtt_port = mqtt_port;
this->mqtt_user = mqtt_user;
this->mqtt_password = mqtt_password;
this-> mqtt_useauth = true;
this->mqtt_useauth = true;
this->client_id = client_id;
mqtt.setServer(mqtt_server, mqtt_port);
auto boundCallback = std::bind(&ESPMegaIoT::mqttCallback, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
mqtt.setCallback(boundCallback);
if (mqtt.connect(client_id, mqtt_user, mqtt_password)) {
if (mqtt.connect(client_id, mqtt_user, mqtt_password))
{
sessionKeepAlive();
mqttSubscribe();
mqtt_connected = true;
@ -138,7 +171,8 @@ bool ESPMegaIoT::connectToMqtt(char*client_id, char *mqtt_server, uint16_t mqtt_
mqtt_connected = false;
return false;
}
bool ESPMegaIoT::connectToMqtt(char* client_id, char *mqtt_server, uint16_t mqtt_port) {
bool ESPMegaIoT::connectToMqtt(char *client_id, char *mqtt_server, uint16_t mqtt_port)
{
// Store mqtt connection parameters
Serial.println("Storing mqtt connection parameters");
this->mqtt_server = mqtt_server;
@ -151,7 +185,8 @@ bool ESPMegaIoT::connectToMqtt(char* client_id, char *mqtt_server, uint16_t mqtt
auto boundCallback = std::bind(&ESPMegaIoT::mqttCallback, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
mqtt.setCallback(boundCallback);
Serial.println("Connecting to mqtt");
if(mqtt.connect(client_id)) {
if (mqtt.connect(client_id))
{
Serial.println("Connected to mqtt");
Serial.println("Calling session keep alive");
sessionKeepAlive();
@ -163,64 +198,90 @@ bool ESPMegaIoT::connectToMqtt(char* client_id, char *mqtt_server, uint16_t mqtt
Serial.println("Failed to connect to mqtt");
mqtt_connected = false;
return false;
}
void ESPMegaIoT::disconnectFromMqtt() {
void ESPMegaIoT::disconnectFromMqtt()
{
mqtt.disconnect();
}
void ESPMegaIoT::publishToTopic(char *topic, char *payload) {
void ESPMegaIoT::publishToTopic(char *topic, char *payload)
{
mqtt.publish(topic, payload);
}
void ESPMegaIoT::registerMqttCallback(void (*callback)(char *, char *)) {
void ESPMegaIoT::registerMqttCallback(void (*callback)(char *, char *))
{
user_mqtt_callback = callback;
}
void ESPMegaIoT::mqttSubscribe() {
void ESPMegaIoT::mqttSubscribe()
{
Serial.println("MQTT Subscribe Activated");
if (user_subscribe_callback != NULL)
{
user_subscribe_callback();
}
// Subscribe to all topics
for (int i = 0; i < 255; i++) {
if (components[i] != NULL) {
for (int i = 0; i < 255; i++)
{
if (components[i] != NULL)
{
components[i]->subscribe();
}
}
}
void ESPMegaIoT::publishRelative(uint8_t card_id, char *topic, char *payload) {
void ESPMegaIoT::publishRelative(uint8_t card_id, char *topic, char *payload)
{
char absolute_topic[100];
sprintf(absolute_topic, "%s/%d/%s", base_topic, card_id, topic);
mqtt.publish(absolute_topic, payload);
}
bool ESPMegaIoT::mqttReconnect() {
if (mqtt_useauth) {
bool ESPMegaIoT::mqttReconnect()
{
if (mqtt_useauth)
{
return this->connectToMqtt(client_id, mqtt_server, mqtt_port, mqtt_user, mqtt_password);
} else {
}
else
{
return this->connectToMqtt(client_id, mqtt_server, mqtt_port);
}
}
void ESPMegaIoT::sessionKeepAlive() {
void ESPMegaIoT::sessionKeepAlive()
{
static unsigned long lastSessionKeepAlive = 0;
if (millis() - lastSessionKeepAlive > 30000) {
if (millis() - lastSessionKeepAlive > 30000)
{
lastSessionKeepAlive = millis();
// Check if mqtt is connected
if (!mqtt.connected()) {
if (!mqtt.connected())
{
// Try to reconnect
mqtt_connected = mqttReconnect();
}
}
}
void ESPMegaIoT::registerRelativeMqttCallback(void (*callback)(char *, char *)) {
void ESPMegaIoT::registerRelativeMqttCallback(void (*callback)(char *, char *))
{
user_relative_mqtt_callback = callback;
}
void ESPMegaIoT::publishRelative(char *topic, char *payload) {
void ESPMegaIoT::publishRelative(char *topic, char *payload)
{
char absolute_topic[100];
sprintf(absolute_topic, "%s/%s", base_topic, topic);
mqtt.publish(absolute_topic, payload);
}
void ESPMegaIoT::subscribeRelative(char *topic) {
void ESPMegaIoT::subscribeRelative(char *topic)
{
char absolute_topic[100];
sprintf(absolute_topic, "%s/%s", base_topic, topic);
mqtt.subscribe(absolute_topic);
}
void ESPMegaIoT::registerSubscribeCallback(void (*callback)(void))
{
user_subscribe_callback = callback;
}

2
Template Project/lib/ESPMegaPRO/ESPMegaIoT.hpp
View File

@ -34,6 +34,7 @@ public:
void publishToTopic(char *topic, char *payload);
void registerMqttCallback(void (*callback)(char *, char *));
void registerRelativeMqttCallback(void (*callback)(char *, char *));
void registerSubscribeCallback(void (*callback)(void));
void setBaseTopic(char *base_topic);
IPAddress getETHIp();
@ -46,6 +47,7 @@ private:
void mqttCallback(char *topic, byte *payload, unsigned int length);
void (*user_mqtt_callback)(char *, char *);
void (*user_relative_mqtt_callback)(char *, char *);
void (*user_subscribe_callback)(void);
void publishRelative(uint8_t card_id, char *topic, char *payload);
bool active;
PubSubClient mqtt;

6
Template Project/lib/ESPMegaPRO/ExpansionCard.hpp
View File

@ -5,9 +5,9 @@ class ExpansionCard {
public:
// Instantiate the card with the specified address
ExpansionCard() {}
virtual bool begin() {}
virtual bool begin();
// Preform a loop to refresh the input buffers
virtual void loop() {}
virtual void loop();
// Get the card type
virtual uint8_t getType() {return 255;}
virtual uint8_t getType();
};

3
Template Project/lib/ESPMegaPRO/IoTComponent.cpp
View File

@ -11,7 +11,8 @@ void IoTComponent::publishRelative(char *topic, char *payload) {
}
void IoTComponent::subscribeRelative(char *topic) {
char absolute_topic[100];
Serial.println("Subscribe relative");
char absolute_topic[50];
sprintf(absolute_topic, "%s/%d/%s", base_topic, card_id, topic);
mqtt->subscribe(absolute_topic);
}

4
Template Project/src/iotdemo.cpp
View File

@ -26,7 +26,6 @@ void setup()
Serial.println("Setting static IP");
Serial.println("Connecting to Ethernet");
ETH.begin();
delay(1000);
ETH.config(ip, gateway, subnet);
Serial.println("Static IP set");
Serial.println("Begin MQTT Initialization Routine");
@ -41,6 +40,9 @@ void setup()
Serial.println("Registering MQTT Callback");
espmega.iot.registerMqttCallback(mqtt_callback);
Serial.println("ESPMega IoT initialized");
Serial.println("Enable IoT Module for Digital Output Card");
espmega.iot.registerCard(1);
espmega.iot.publishCard(1);
}
void loop()