Re: [avr-gcc-list] Does anybody have a variant of memcpy that uses ELPM?

[Eric Weddington]

Dave Hylands wrote:
> Hi,
>
> I'm using the avr-gcc from WinAVR.
>
> Before I go off and reinvent the wheel, I figured I'd ask if anybody
> has a variant of memcpy which uses the ELPM instruction (as I
> understand it, memcpy_P uses LPM which doesn't work for me).
>
> I'd also like to find a way of getting the long address of a symbol
> located in "high" flash (i.e. above the 64K mark - on an ATMega128).
>
> Doing:
>
>     uint32_t addr = (uint32_t)&flashVar;
>
> seems to give a sign-extended version of the lower 15 bits of the
> address. This works for the upper and lower 32K on the ATMega128, but
> not for stuff in the middle.

Hi Dave,

I'm sorry, no I don't have one. It shouldn't be too hard to grab a copy 
of the source from avr-libc and modify it to suit your needs.

But now that I'm thinking of it. Would you be willing to submit a new 
Task Tracker in the avr-libc project about this?:
<http://savannah.nongnu.org/task/?group=avr-libc>
This is a good idea to have in avr-libc and I don't want the issue to 
get lost.

--
Eric Weddington