[ECOS] ecos ported to RAM or FLASH in ARM7TDMI-S??

[ECOS] ecos ported to RAM or FLASH in ARM7TDMI-S??

[abhishek srivastava]

hi,
i am using LPC2148 ARM7TDMI-S processor to port ecos to it.
i have a querry,whether ecos be ported to RAm or flash. my device have flash of 512k and ram of 32k,is it ok??
where ecos wud go?? do i need some external RAM??or it wud work.

i have to make GUI application also i.e. i want that when my ARM board which when connected to graphical LCD,it show some GUI, that i need to do!!
wud with such low memory, i am able to run GUI along with ecos on ARM processor. 
plz reply me soon.


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Re: [ECOS] ecos ported to RAM or FLASH in ARM7TDMI-S??

[Jonathan Larmour]

abhishek srivastava wrote:
> hi,
> i am using LPC2148 ARM7TDMI-S processor to port ecos to it.
> i have a querry,whether ecos be ported to RAm or flash. my device have flash of 512k and ram of 32k,is it ok??
> where ecos wud go?? do i need some external RAM??or it wud work.

That's possible with eCosPro, so may well also be possible with eCos. It's
hard to say for sure as our LPC2xxx port differs unfortunately. (I dare say
eCosPro is smaller though as we've put effort into that.)

> i have to make GUI application also i.e. i want that when my ARM board which when connected to graphical LCD,it show some GUI, that i need to do!!
> wud with such low memory, i am able to run GUI along with ecos on ARM processor. 

No real chance with any OS. Even if you have an off-chip framebuffer it's
extremely unlikely. For the GUI itself, we've got a port of C/PEG, which
apparently uses about 12k which is really very small for what you get, but
that excludes the framebuffer and of course application UI requirements.

Jifl
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