Electron goes into SOS Mode if I use Particle.publish();

Troubleshooting
1

Hallo!

I have a problem with my Electron. If I want to use Particle.publish() my Electron goes into the SOS Mode. Can everybody help me with this Problem?

Here is my Code:

sprintf(
        publishString,
        "{\"bat\": %f, \"latitude\": %f, \"longitude\": %f}",
        batteryPercent, latitude, longitude
    );
    
    Serial.write(publishString);
    
    Particle.publish("boat_data", publishString, 60, PRIVATE);

Thanks!

2

How is the variable publishString declared? Also batteryPercent, latitude and longitude.

1 Like
3

Yes!

Here are my declaration:

char publishString[64];
float latitude;
float longitude;
float batteryPercent;
4

Yup, 64 seems too small, for three floats without limited precission.
Try "%.2f" instead.

2 Likes
5

Ok! Tanks, but do you mean I should use “%.2f” instead of 64?

I have tried this now:

      float latitude = 0;
      float longitude = 0;
      float batteryPercent = 100;
        
        sprintf(
            publishString,
            "{\"bat\": %.2f, \"lat\": %.2f, \"lon\": %.2f}",
            batteryPercent, latitude, longitude
        );
        
        Serial.write(publishString);
        
        Particle.publish("boat_data", "publishString");

It is also the same problem.

6

And where has your definition of publishString gone?

BTW is your device breathing cyan when this happens?