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Re: cyg_user_start limitations

From: "SASAKI at KOBELCO" <sasaki at info dot kobelco dot co dot jp>
To: Gary Thomas <gary at chez-thomas dot org>
Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
Date: Tue, 23 Jul 2002 14:04:40 +0900
Subject: Re: [ECOS] cyg_user_start limitations
References: <4.3.2-J.20020718105442.00c538d0@info0><4.3.2-J.20020718105442.00c538d0@info0>

At 02/07/18 07:47, Gary Thomas wrote:

On Wed, 2002-07-17 at 20:14, SASAKI@KOBELCO wrote:
> Hello Everyone,
>
> I'm trying to execute some initial programs in cyg_user_start().
> But some functions(systemcall) are ignored.
> Does anyone know if cyg_user_start() has some limitations or not?

There are definitely restrictions here.
  cyg_user_start() runs on the startup stack - typically small
  no interrupts or scheduling will happen until this function exits

What sort of things are you trying to do?
Look at the test programs for good examples of what can and should
be done within the various startup functions.

I tried to set Alaram, and wait interrupt from my device.
I created another thread for initializations ,then I cleared problems.

Thank you .

---------------
Satoshi Sasaki
sasaki@info.kobelco.co.jp (Kobe Japan)

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References:
- cyg_user_start limitations
  - From: SASAKI@KOBELCO
- Re: cyg_user_start limitations
  - From: Gary Thomas

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