Relay with button example sketch, works...but not as expected

[roffy]

powered from the usb of my PC as i have only uploaded the sketch then went to try it out.
i was thinking it wasent a power supply problem as the sensor seems to be working ok. no errors or fails in the serial monitor.

sketch is a direct coppy and past from the example of relay with button. here it is.

// Example sketch för a "light switch" where you can control light or something 
// else from both vera and a local physical button (connected between digital
// pin 3 and GND).
// This node also works as a repeader for other nodes

#include <MySensor.h>
#include <SPI.h>
#include <Bounce2.h>

#define RELAY_PIN  4  // Arduino Digital I/O pin number for relay 
#define BUTTON_PIN  3  // Arduino Digital I/O pin number for button 
#define CHILD_ID 1   // Id of the sensor child
#define RELAY_ON 1
#define RELAY_OFF 0

Bounce debouncer = Bounce(); 
int oldValue=0;
bool state;
MySensor gw;
MyMessage msg(CHILD_ID,V_LIGHT);

void setup()  
{  
  gw.begin(incomingMessage, AUTO, true);

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Relay & Button", "1.0");

 // Setup the button
  pinMode(BUTTON_PIN,INPUT);
  // Activate internal pull-up
  digitalWrite(BUTTON_PIN,HIGH);
  
  // After setting up the button, setup debouncer
  debouncer.attach(BUTTON_PIN);
  debouncer.interval(5);

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID, S_LIGHT);

  // Make sure relays are off when starting up
  digitalWrite(RELAY_PIN, RELAY_OFF);
  // Then set relay pins in output mode
  pinMode(RELAY_PIN, OUTPUT);   
      
  // Set relay to last known state (using eeprom storage) 
  state = gw.loadState(CHILD_ID);
  digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
}


/*
*  Example on how to asynchronously check for new messages from gw
*/
void loop() 
{
  gw.process();
  debouncer.update();
  // Get the update value
  int value = debouncer.read();
  if (value != oldValue && value==0) {
      gw.send(msg.set(state?false:true), true); // Send new state and request ack back
  }
  oldValue = value;
} 
 
void incomingMessage(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.isAck()) {
     Serial.println("This is an ack from gateway");
  }

  if (message.type == V_LIGHT && strlen(msg.getString()) != 0) {
     // Change relay state
     state = message.getBool();
     digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
     // Store state in eeprom
     gw.saveState(CHILD_ID, state);
    
     // Write some debug info
     Serial.print("Incoming change for sensor:");
     Serial.print(message.sensor);
     Serial.print(", New status: ");
     Serial.println(message.getBool());
   } 
}

does this help at all?

[rvendrame]

Try changing this line

if (value != oldValue && value==0) {

to this

if (value != oldValue) {

[BulldogLowell]

@roffy said:

gw.send(msg.set(state?false:true), true);

also, are you aware that you are not changing the variable "state" with a button press?

nor are you affecting the relay, fyi...

void loop() 
{
  gw.process();
  debouncer.update();
  // Get the update value
  int value = debouncer.read();
  if (value != oldValue && value==0)
  {
      state = !state;
      digitalWrite(RELAY_PIN, state);
      gw.send(msg.set(state, true)); // Send new state and request ack back
  }
  oldValue = value;
} 

[BulldogLowell]

@roffy said:

gw.saveState(CHILD_ID, state);

void loop() 
{
  gw.process();
  debouncer.update();
  // Get the update value
  int value = debouncer.read();
  if (value != oldValue && value==0)
  {
      state = !state;
      digitalWrite(RELAY_PIN, state);
      gw.saveState(CHILD_ID, state);// forgot to save the new state to EEPROM
      gw.send(msg.set(state, true)); // Send new state and request ack back
  }
  oldValue = value;
} 

gw.saveState(CHILD_ID, state);

[BulldogLowell]

@rvendrame said:

Try changing this line

if (value != oldValue && value==0) {

to this

if (value != oldValue) {

I don't think you want to affect a state change on both sides of the button press....

[rvendrame]

@BulldogLowell said:

I don't think you want to affect a state change on both sides of the button press....

... if you are thinking in a pushbutton , yes I agree with you --- But what about a regular on-off switch?

[BulldogLowell]

@rvendrame said:

@BulldogLowell said:

I don't think you want to affect a state change on both sides of the button press....

... if you are thinking in a pushbutton , yes I agree with you --- But what about a regular on-off switch?

For an on/off switch? well you would probably not have that on a device that is also controlled remotely/wirelessly.

[rvendrame]

@BulldogLowell said:

For an on/off switch? well you would probably not have that on a device that is also controlled remotely/wirelessly.

Why not? I do have the original on/off switch from my lights for example. I want to control them via automation but also via wall switch...

[BulldogLowell]

@rvendrame said:

@BulldogLowell said:

For an on/off switch? well you would probably not have that on a device that is also controlled remotely/wirelessly.

Why not? I do have the original on/off switch from my lights for example. I want to control them via automation but also via wall switch...

yeah, but every wall switch I have, which are integrated into my home automation, are not two position switches. Anyways, the OP has to chime in here... in the rare event he's using a two-position switch, well your code may still need to change. Time to hear from the OP.

[rvendrame]

@BulldogLowell said:

also, are you aware that you are not changing the variable "state" with a button press?

Just to mention, state is being changed:

 if (value != oldValue && value==0)
  {
      state = !state;   <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
      digitalWrite(RELAY_PIN, state);
      gw.saveState(CHILD_ID, state);// forgot to save the new state to EEPROM
      gw.send(msg.set(state, true)); // Send new state and request ack back
  }

[BulldogLowell]

@rvendrame

@rvendrame said:

Just to mention, state is being changed:

yes, I added that... it was missing from OP's code

[hek]

Yes, as you are aware not the WithButton example was created to be used with a monostable button.

Haven't really thought about bi-stable but should be doable.

The state is actually not stored in EEPROM until ack message comes back from gateway. It is also only then the actual realy is flipped.

As you already mention above removing value==0 would send of a change when flipping button. Not sure if one should pick up oldValue from eeprom at startup as well.

[roffy]

wow thanks for all the suggestions guys! sorry for the slow reply, this is the first time iv actually been able to sit at my computer since i posted, if only we didnt have to work to pay bills id be here all day...ahhh if only..... anyway!

Yes i am using a pushbutton not a rocker switch so i would need it to only do something on the down press and ignore the upward contact on the release of the button.

Ill try changing the script as explained above and see what that does, (as you have probably guessed by now my arduino tinkering only covered the first 10 or so lessons in the basic tutorial, then i went off and only looked up specific coding for the small projects i was working on....and most of which i have forgotten as i haven't used them for a long time :( need to brush up on what i should already know i guess)

anyway i shall post results as soon as i try out the suggestions. i think you all get what im trying to achieve here! thanks again,