Serial.print

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hy

I think someone has already asked this but I couldn't find the post..

So I got a sketch running in wich I have to print a Float value over the Serial port.

for example
float test = 231,02312

Serial.print((long)((float)test ));

I do get 231 that's good but how do I get the rest? The '0' is my problem it won't store in an Int value of course. so how can I print it?

thx
Andy

2

As of 0018:

Serial.print(test, nDP);

will give "nDP" places of decimals.

3

hmm thx but it doens't relay work...

I tested it with:

for (int i=1;i<9;i++){
Serial.println(lat, i);
}

Result:

231.0
231.02
231.023
231.0231
231.02311
231.023117
231.0231170
231.02311706

Not one of this is the right one...

4

Not one of this is the right one

It's a float - what sort of accuracy do you expect?

5

the value has always 5 places of decimals it won't change.
so there is no way?

6

You could try fixed-point instead, it depends on what sort of dynamic range you've got.