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Re: newbie -- RTOS for STR91xF mcu


On Mon, Nov 27, 2006 at 09:53:30PM -0800, Ravi Prasad wrote:
> Hi all,
> 
> I am having a STR91xF (mmu less, ARM9) based board on
> which I need a RTOS with a POSIX compliant API. I
> found following choices:
> 
> 1. FreeRTOS which is having a port for it. But it do
> not have POSIX compliant API which I will need to port
> few application from Linux.
> 
> 2. uCLinux which is for mmu less processors. But it
> does not have a port and it is not real time.
> 
> 3. eCOS which is RTOS and have POSIX compliant API but
> I am not sure it supports a mmu less controller.
> 
> 
> Looking into above can anyone suggest:
> 
> 1.  Which one is the best choice, FreeRTOS or uCLinux
> or eCOS or anyother?

How much of POSIX do you need? eCos does not implement
everything. uCLinux will have more of it.

> 2.  Does eCOS supports mmu less processors?

Yes. It does not use the MMU, so it makes no difference if there is
one or not.

> 3. Is there any port of eCOS for STR91xF ? If not is
> there any ongoing project for this port? If not what
> will be the effort involved in developing a port (with
> considering that I m new to eCOS) ?

eCosCentric have a closes source port to the STR71. I guess a lot of
the device drivers will be re-usable on the STR91. 

I don't remember an OpenSource port, but it is worth googling.

  Andrew

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