Re: [avr-gcc-list] use of specifin RAM location

[Bjarne Laursen]

varsha wrote:

> Hello all,
> I'm working on avr-gcc (GCC) 3.4.3 compiler and target MCU is Atmega 16
> i want to declare some variables, such that hey will take specific ram 
> locations...
> for ex:
>  

One way of doing this, is:
1: Write the adresse
2: Cast it to a pointer of the appropiate type
3: Dereference the pointer

*((int*)0x1234) = 1;

-- or  --

typedef
{
   char reg1;
   char reg1;
} TDeviceX;

((TDeviceX*)0x1234)->reg1 = 255;

Of cause, you should not allocate variables this way that is also 
allocated by the linked.

-Bjarne

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