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RE: [avr-gcc-list] an idea: adding serial sram to avr to extend heapstor

From: Boyapati, Anitha
Subject: RE: [avr-gcc-list] an idea: adding serial sram to avr to extend heapstorage
Date: Sun, 13 Mar 2011 23:12:54 +0800

>-----Original Message-----
>From: address@hidden
>[mailto:address@hidden On
>Behalf Of Raymond Moore
>Sent: Sunday, March 13, 2011 7:44 PM
>To: address@hidden
>Subject: [avr-gcc-list] an idea: adding serial sram to avr to extend
>I am working on several projects that require more sram than most AVRs
>have.  I don't particularly need more processing power but it would be
>nice to have much larger variable storage space.  I can work with a
>serial sram and use it for external storage already but it would be
>nice to have an option to be able to turn that serial sram into heap
>Due to the complexity of gcc I am assuming this will be a non-trivial
>task but it is something I would be willing to work on.  My question
>is, where in the gcc source would I look to start redirecting heap

I haven't really understood your requirement, but if you are looking for some 
heap storage stuff, then avr-libc might be your place. The malloc routines 
there allocate the memory using heap variables.

Coming back to the requirement, instead of using external ram via serial 
interface, you want that to be integrated with SRAM seamlessly...Have I got it 


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