eCos and ucOS memory footprint

Jun 08, 2004 3 Replies

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Ozone Hole near South Pole 22 years ago

Hi,

I am thinking about putting either eCos or ucOS into the just released Philips ARM7 LPC21xx chip. It has something like 16kB of RAM, 128kB (or 256kB depending on the part) of FLASH on-chip, with no external memory bus. Before going ahead, I would like to have a sanity check: can the porting of eCos or ucOS be done with the resources?

It aims to be my hobby project. Just want to try out the small RTOS onto a real chip.

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Richard 22 years ago

Don't know about eCos (probably depends how you configure it but should be no problem), ucOS no problem at all.

I'm in the process of porting FreeRTOS

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to this device at the moment, and have it running in a simulator already. Let me know by private email if you would like the as yet incomplete code - address is on the contact page of the WEB site.

Regards, Richard.

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Grant Edwards 22 years ago

eCos is more heavyweight than uCos, though I think you could get either one working with the amount of memory specified. If you're a first-timer with an RTOS, I'd recommend uC/OS. It's a simpler system design and simpler to configure/build. The book is excellent and explains all the system internals.

Grant Edwards grante Yow! Like I always at say -- nothing can beat visi.com the BRATWURST here in DUSSELDORF!!

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John Taylor 22 years ago

You can also try XMK

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which has a smaller footprint than uCos. However, XMK is not yet ported to the ARM7 as is I am sure uCos is.

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