On Mon, Jan 4, 2010 at 12:00 AM, Bodo Wenzel <[email protected]> wrote:
>> if( a = a + 1024 ) // strangely this makes the
>> pointer work for 21 bytes
> Well, this is a bad code; do you really mean:
>
> if( ( a = a + 1024 ) != 0)
>
> The other proposal "(a == a + 1024)" will never be true. ;-)
Hi Bodo,
you are alright. How idiot I am :D
thank you for your point.
>
>> *abs_ptr++ ; // Make pointer point at next location in RAM
> I think this is the culprit. This line increments the cell pointed to by
> abs_ptr, not the pointer. You surely wanted to do:
>
> abs_ptr++;
I think *abs_ptr++ and abs_ptr++ will point into a same address,
because the presedence of ++ is higher than * operator.
so, *abs_ptr++ is equal to *(abs_ptr++) not (*abs_ptr)++.
But, I agree with Bodo, the code is not good.
I think what do you (mr_cross) want to do is some thing like this.
//code inside init_ram()
unsigned int cnt = 0;
for (a = RAM_START; a < RAM_END; a++)
{
cnt++;
if (cnt == 1024) //print * every 1 kB
{
// ... code for print * and CRLF
cnt = 0;
}
*abs_ptr = 0x00;
abs_ptr++;
}
just my IDR 0.02
putu
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