Mqtt button - pressed and hold down message
Posted: Wed Jan 08, 2020 1:38 pmHi!
First - i'm complete newbie on this...
With the help of internet i have put together a code for sending status on 4 inputs over mqtt, so far so good.
But i now want it to act like this (for inputs from a push button):
Short activation of input (press and release button) - Send "On"
Long activation of input (press and hold button) - Send "Hold"
Deactivation of input (when button is released) - Send "Off"
And, i only want the message to be sendt when there is a change of status.
Can anybody help me with some guidance?
The code:
First - i'm complete newbie on this...
With the help of internet i have put together a code for sending status on 4 inputs over mqtt, so far so good.
But i now want it to act like this (for inputs from a push button):
Short activation of input (press and release button) - Send "On"
Long activation of input (press and hold button) - Send "Hold"
Deactivation of input (when button is released) - Send "Off"
And, i only want the message to be sendt when there is a change of status.
Can anybody help me with some guidance?
The code:
Code: Select all
#include <EEPROM.h>
#include <PubSubClient.h>
#include <Wire.h>
#include <ESP8266WiFi.h>
// Connect to the WiFi
const char* ssid = "...";
const char* password = "...";
// Connect to the MQTT Broker
const char* mqtt_server = "...";
const char* mqtt_username ="";
const char* mqtt_password = "";
const char* clientID = "ESP8266_1";
// this constant won't change:
const int buttonPin1 = D1; // the pin that the pushbutton is attached to
const int buttonPin2 = D2; // the pin that the pushbutton is attached to
const int buttonPin5 = D5; // the pin that the pushbutton is attached to
const int buttonPin6 = D6; // the pin that the pushbutton is attached to
// Variables will change:
int buttonPushCounter1 = 0; // counter for the number of button presses
int buttonState1 = 0; // current state of the button
int lastButtonState1 = 0; // previous state of the button
int buttonPushCounter2 = 0; // counter for the number of button presses
int buttonState2 = 0; // current state of the button
int lastButtonState2 = 0; // previous state of the button
int buttonPushCounter5 = 0; // counter for the number of button presses
int buttonState5 = 0; // current state of the button
int lastButtonState5 = 0; // previous state of the button
int buttonPushCounter6 = 0; // counter for the number of button presses
int buttonState6 = 0; // current state of the button
int lastButtonState6 = 0; // previous state of the button
WiFiClient espClient;
PubSubClient client(espClient);
//void callback(char* topic, byte* payload, unsigned int length) {
//}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.println("Attempting MQTT connection...");
// Attempt to connect
if (client.connect(clientID, mqtt_username, mqtt_password)) {
Serial.println("Connected");
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup()
{
{
client.setServer(mqtt_server, 1883);
//client.setCallback(callback);
// initialize the button pin as a input:
pinMode(buttonPin1, INPUT_PULLUP);
pinMode(buttonPin2, INPUT_PULLUP);
pinMode(buttonPin5, INPUT_PULLUP);
pinMode(buttonPin6, INPUT_PULLUP);
// initialize serial communication:
Serial.begin(9600);
}
// Connect to WiFinetwork
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
//Serial.begin(9600);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
//Serial.begin(9600);
// Start the server
// server.begin();
// Serial.println("Server started");
//Serial.begin(9600);
// Print the IP address
Serial.print("Local IP: ");
Serial.println(WiFi.localIP());
}
void loop() {
// read the pushbutton input pin1:
buttonState1 = digitalRead(buttonPin1);
// compare the buttonState to its previous state
if (buttonState1 != lastButtonState1) {
// if the state has changed, increment the counter
if (buttonState1 == HIGH) {
client.publish("ESP8266_1/Input1", "OFF"); //
// if the current state is HIGH then the button
// went from off to on:
} else {
// if the current state is LOW then the button
// went from on to off:
client.publish("ESP8266_1/Input1", "ON"); //
}
// Delay a little bit to avoid bouncing
delay(100);
}
// save the current state as the last state,
//for next time through the loop
lastButtonState1 = buttonState1;
// read the pushbutton input pin2:
buttonState2 = digitalRead(buttonPin2);
// compare the buttonState to its previous state
if (buttonState2 != lastButtonState2) {
// if the state has changed, increment the counter
if (buttonState2 == HIGH) {
client.publish("ESP8266_1/Input2", "OFF"); //
// if the current state is HIGH then the button
// went from off to on:
} else {
// if the current state is LOW then the button
// went from on to off:
client.publish("ESP8266_1/Input2", "ON"); //
}
// Delay a little bit to avoid bouncing
delay(100);
}
// save the current state as the last state,
//for next time through the loop
lastButtonState2 = buttonState2;
// read the pushbutton input pin5:
buttonState5 = digitalRead(buttonPin5);
// compare the buttonState to its previous state
if (buttonState5 != lastButtonState5) {
// if the state has changed, increment the counter
if (buttonState5 == HIGH) {
client.publish("ESP8266_1/Input5", "OFF"); //
// if the current state is HIGH then the button
// went from off to on:
} else {
// if the current state is LOW then the button
// went from on to off:
client.publish("ESP8266_1/Input5", "ON"); //
}
// Delay a little bit to avoid bouncing
delay(100);
}
// save the current state as the last state,
//for next time through the loop
lastButtonState5 = buttonState5;
// read the pushbutton input pin6:
buttonState6 = digitalRead(buttonPin6);
// compare the buttonState to its previous state
if (buttonState6 != lastButtonState6) {
// if the state has changed, increment the counter
if (buttonState6 == HIGH) {
client.publish("ESP8266_1/Input6", "OFF"); //
// if the current state is HIGH then the button
// went from off to on:
} else {
// if the current state is LOW then the button
// went from on to off:
client.publish("ESP8266_1/Input6", "ON"); //
}
// Delay a little bit to avoid bouncing
delay(100);
}
// save the current state as the last state,
//for next time through the loop
lastButtonState6 = buttonState6;
{
if (!client.connected()) {
reconnect();
}
client.loop();
}
}