I’ve read through more than a few threads on similar topics, but this just isn’t sticking for me.
I’ve got two double variables stored globally in my ino file:
then in my setup() i have two variables for Particle:
the part I can’t seem to solve is:
//attempt to convert and publish temperature in C double variable as 2 digit decimal char chartempC; sprintf(chartempC, "%.2f", tempC); Particle.publish("temperature", chartempC); //attempt to convert and publish relative humidity double variable as 2 digit decimal char RH; sprintf(RH, "%.2f", relH); Particle.publish("relative_humidity", RH);
is this the appropriate (smartest? shortest?) way to get 2 decimal places on these variables?
is there an easy way to round double variables to 2 decimal places before you save data to an SD card?
Excuse the questions if its a simple thing, I’m rather new to all of this. Thanks for the help in advance, I’ve learned a lot from all the people sharing solutions on here