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The Oak by Digistump => Oak Support => Topic started by: actuino on February 07, 2016, 09:08:11 am

Title: Particle.variable() doesn't compile
Post by: actuino on February 07, 2016, 09:08:11 am

Hi,

Got my oaks udated and running.

I'm trying a very simple Temp/Humidity sensor.

Config : Oak Core 0.9.2, Arduino 1.6.7 on Win8 64 bits.

Noticed that

Code: [Select]

double temp=0;
[...]
Particle.variable("temp",temp);
Does not compile :

undefined reference to `bool CloudClass::variable<particle_core::CloudVariableTypeDouble>(char const*, particle_core::CloudVariableTypeDouble::varref, particle_core::CloudVariableTypeDouble const&)'

Using the old interface

Code: [Select]

Particle.variable("temp", &temp, DOUBLE);
doesn't compile either.

Particle.publish() , however, works fine.

I did a double to *char conversion and used publish() for the time being.

Title: Re: Particle.variable() doesn't compile
Post by: ajpowell on February 07, 2016, 03:19:30 pm

Hey @actuino,

Seeing a similar thing here too (using Mac OSX is my case) - in fact, Strings and char * don't seem to work either - only int is working fine for me (see my sample code here:
https://github.com/ajpowell/OakSamples/blob/master/examples/oak_particle.variable/oak_particle.variable.ino (https://github.com/ajpowell/OakSamples/blob/master/examples/oak_particle.variable/oak_particle.variable.ino) )

Not seeing the functions in the OakParticle.cpp file for Double - mind you, seeing the ones for String and char * and that doesn't work, so something not quite right here.

As a workaround, you could send the value as an integer i.e. your double value *10  for 1 decimal place or double value * 100 for 2 decimal places - not ideal though...

Title: Re: Particle.variable() doesn't compile
Post by: digistump on February 07, 2016, 05:41:19 pm

Opened issue for this: https://github.com/digistump/OakCore/issues/25

Looking into it

Thanks for the report!