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first Time to C programing

 
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assaad



Joined: 09 Dec 2009
Posts: 37

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first Time to C programing
PostPosted: Wed Dec 09, 2009 8:18 am     Reply with quote
Hi all

Why I cant use the registers directly ? example LATB=0xff
Do I need always to re define all the registers , ports and lats ?
#byte LATB = 0xf8a

Any other way please ?

Thank you
mkuang



Joined: 14 Dec 2007
Posts: 257

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Re: first Time to C programing
PostPosted: Wed Dec 09, 2009 9:46 am     Reply with quote
assaad wrote:
Hi all

Why I cant use the registers directly ? example LATB=0xff
Do I need always to re define all the registers , ports and lats ?
#byte LATB = 0xf8a

Any other way please ?

Thank you

Why would you want to use the registers directly? That is so tedious. The name of the registers are all defined in the header file for your device.

Also, does 0xf8a look like a single byte to you?
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Dec 09, 2009 5:01 pm     Reply with quote
If you have the full IDE compiler (PCW, PCWH, or PCWHD), there is a
feature in the Device Editor that allows you to create a header file of
all the SFR register addresses (with #byte statements). You can
#include that file in your program and easily access the registers
directly. See the following link in which ckielstra explains how to do this:
http://www.ccsinfo.com/forum/viewtopic.php?t=40862&start=3
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