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Re: [avr-gcc-list] use of specifin RAM location
From: |
Daniel O'Connor |
Subject: |
Re: [avr-gcc-list] use of specifin RAM location |
Date: |
Tue, 29 Nov 2005 10:42:57 +1030 |
User-agent: |
KMail/1.8.2 |
On Tue, 29 Nov 2005 09:05, address@hidden wrote:
> I have the same problem, and the point is that part of my external
> memory is inside an FPGA, basically under control of the FPGA (It's
> high-speed ADC data), while another part is external SRAM which I use
> for my heap etc.
You should be able to do..
char *foo;
foo = 0x1234;
for (i = 0; i < 10; i++)
putc(foo[0]);
or similar..
> I access the FPGA memory at the moment using pointers which I initialise
> to the right value. I don't yet have a method mapped out for the SRAM -
> it's on the next version of the board (the present version has no
> external SRAM).
>
> I will have a need to allocate some large-ish arrays in the external
> SRAM in the next hardware version.
I don't think it would be any different to the above unless you are using a
malloc routine, in which case you would need to tell it to not allocate
memory in certain places.
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
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