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Re: [avr-gcc-list] How define a function pointer array in programmemory?


From: whiteman
Subject: Re: [avr-gcc-list] How define a function pointer array in programmemory?
Date: Wed, 25 Feb 2004 8:35:24 +0800

Christian Ludlam!

        thanks for your reply. my source is ok!! thanks again.

======= 2004-02-23 10:39:00 =======

>On 23 Feb Artur Lipowski wrote:
>
>> Try this:
>> typedef void (*FPtr)(void);
>> FPtr Key_Protab[] = { keypro1, keypro2, keypro3 };
>> 
>> and call:
>> Key_Protab[functionID]();
>> 
>> BTW> Your question has nothing in common to AVR-GCC, answer can be found
>> reading any book about a C language.
>
>It is specific to AVR-GCC, because the question was how to put such a table
>in program memory. In that case you need to
>
>  typedef void (*FPtr)(void);  
>  FPtr Key_Protab[] PROGMEM = { keypro1, keypro2, keypro3 };
>  
>and to call,
>
>  FPtr ptr = (FPtr) pgm_read_word(&Key_Protab[functionID]);  
>  ptr();
>  
>-- 
>Christian Ludlam
>address@hidden
>
>_______________________________________________
>avr-gcc-list mailing list
>address@hidden
>http://www.avr1.org/mailman/listinfo/avr-gcc-list

= = = = = = = = = = = = = = = = = = = =
                        
Regards 
                                 
        whiteman
address@hidden
          2004-02-25





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