byte not supported in header file???

Forum 2005-2010 (read only) Software Bugs & Suggestions
1

Today I was programming for arduino and I decided to create a global variable in a header file, and then include that header file in my main.pde.

In the header file, let's call it test.h if i declare:
int x = 2;
There are no compile errors.

But if the type is changed from int to byte:
byte x = 2;
There is a compile error: 'byte' does not name a type

If the declaration is made on the pde file everything compiles without any problem.

Is this a bug? Or am I missing something?

Can anyone enlight me?
Thanks for your time.

2

When compiling pde sketches the IDE links in some of the Arduino 'core' libraries, where byte is defined. You probably could just use standard C types that are 8 bits long, char? Or research the IDE build process to see which include files will pull in the byte type.

Lefty

3

And shouldn't the default libraries used be the same???

4

I had the same exact problem earlier today. I just used uint8_t instead of byte. After all, uint8_t (unsigned 8-bit integer) is the same as byte. I looked everywhere through the arduino core stuff to find how the type byte is defined, but to no avail. I was hoping to find the header file needed to be included so it would work...

So just replace "byte" with "uint8_t". That worked for me.

5

Here it says uint8_t does not name a type...

I've tried char, but it seems to not recognize binary input... (it seems that is for the same reason that won't recognize byte)

If someone knows which core libraries i shall include it would be great!

Thanks.

6

Put #include "WProgram.h"
at the top of your .h file.

7

Problem solved by westfw!!!

Thanks a lot!!!