Check out this thread in the AVR-GCC list.


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Von: avr-gcc-list-bounces+bjoern.haase=3Dde.bosch.com@nongnu.org=20
[mailto:avr-gcc-list-bounces+bjoern.haase=3Dde.bosch.com@nongnu.org]=20
Im Auftrag von stevech
Gesendet: Sonntag, 22. Mai 2005 23:21
An: 'Daniel O'Connor'; avr-gcc-list@nongnu.org
Cc: joerg_wunsch@uriah.heep.sax.de
Betreff: RE: [avr-gcc-list] AVR-GCC question (Harvard Arch and C)

Split aka Harvard architectures are common in embedded.
Although GCC/Winavr is contorted into supporting this via piles of macros=
,
some C compilers are arranged to intrinsically support the architecture,
i.e., having two kinds of pointers (RAM and FLASH), and same for constant=
s
and so on.

Examples include CodeVision AVR (excellent/low cost), IAR and the rest.
Really simplifies working with AVRs.

Steve


-----Original Message-----
From: Michael Rigby-Jones [mailto:Michael.Rigby-Jones@bookham.com]
Sent: Monday, May 23, 2005 3:54 PM
To: Microcontroller discussion list - Public.
Subject: RE: [AVR:] AVR Butterfly programmer

The price is right, and it appears to be relatively bug free and has a
pretty good library.  Just one thing that is driving me nuts, the poor
support for reading constant data from program memory.  Stuff that was a
snap using the HiTech PICC compiler is now a real PITA, having to use a
load of extra code that makes the source difficult to read and debug.

Are there any commercial compilers that properly support pointers to
flash memory?

Regards

Mike

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