[Solved] No heartbeat

[jsiddall]

I am trying to implement sendHeartbeat() periodically so my gateway knows that a sensor is alive even when it doesn't have any data to send.

The issue is that while I am pretty sure sendHeartbeat() is being called nothing is actually being sent.

This is a node running MYS 2.0.

Here's the sketch excerpt from loop():

#define MY_DEBUG

if ((millis() - last_heartbeat_time) > HEARTBEAT_TIME) {
  // If it exceeds the heartbeat time then send a heartbeat
  void sendHeartbeat();
  last_heartbeat_time = millis();
  
  #ifdef MY_DEBUG
    Serial.println("Sent heartbeat");
  #endif
}

wait(UPDATE_TIME);

And here's the debug log:

Sent heartbeat
TSP:SANCHK:OK
TSP:MSG:SEND 3-3-0-0 s=0,c=1,t=39,pt=7,l=5,sg=0,ft=0,st=ok:0.00
TSP:MSG:SEND 3-3-0-0 s=1,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=ok:4.37
Sent heartbeat

I know the if clause is executing because I get the "Sent heartbeat" debug message.

The two other messages are from child sensors 1 and 2 and those seem to be working fine.

I would expect that if a message was being sent for the heartbeat I should see some kind of debug log showing the message was sent. However, I neither see a debug message nor receive a heartbeat message at the gateway.

Can anyone see any reason the above code shouldn't send a heartbeat?

Thanks,

Jeff

[tekka]

@jsiddall Yes, your code does not work, you should remove void before sendHeartbeat();

[jsiddall]

@tekka Thanks, easy fix. I'm obviously not a C guy! I guess you only use "void" when you are defining a function.

[tekka]

@jsiddall yup, defining a function without return value :)