How to define a data type of 10 bits or 24 bits?

Ed_Banses · Joined: 15 Sep 2005 Posts: 15

Hi all,

I was wondering if there is any way to define a data type of 10 bits or one of 24 bits. I am getting problems with RAM space and the possibility to define this "exotic" data types could solve some of my problems.
Thanks in advance.
Best Regards,
Eduardo

rwyoung · Joined: 12 Nov 2003 Posts: 563 Location: Lawrence, KS USA

Short answer is no. There are no native 10-bit or 24-bit data types.

You can create structures and use the UNION command to encapsulate data. But you will need to keep things on 8-bit boundaries or end up with wasted space.

Furthermore the data operators (+, -, etc) and functions are designed to use the native data types. If you created your own 24-bit integer you will also need to create your own 24-bit operators and functions.

The CCS compilers sometimes have problems with overly complex data structures so be prepaired to read LST and MAP files.

What part are you currently using?
_________________
Rob Young
The Screw-Up Fairy may just visit you but he has crashed on my couch for the last month!

Ed_Banses · Joined: 15 Sep 2005 Posts: 15

Thanks for your answer.
I am using the PIC16F688 because the Ultra Low Power Wake Up feature.
I am going to take a look that you say, but I think that I am going to change the idea using the exotic data types.
Thanks a lot.
Eduardo