onewire ds18b20 getTempCByIndex()

Projects Programming
1

Hey All,

I'm trying to make a temp controller for my hydronic system. I couldn't think of a simpler project to cut my teeth on after making some LED's blink. I have identified my functions and have been testing code for each to get the desired results. So far so good.

I am using onewire ds18B20 sensors and plan to have up to 16 used. So my Question is...

Does the getTempCByIndex() have to run thru the sensor id process each time it's called ? All the literature I've read says the addresses once id'd are stored in the master. I'm assuming that means i need code to store the addresses for later use or does the getTempCByIndex() function handle that ?

If getTempCByIndex() does have to run thru the sensor id process each time. Are there any drawbacks, Other than time ? Are there greater chances of com issues than if i did just run getTempCByIndex() once. Than call the sensors by their saved addresses.

Thanks Hans

2

Check the single.ino example code that is part of the library to see how to fetch addresses.

3

Thanks Rob that answers it !