[ECOS] how can I create real time clock interrupt?

Mon Sep 23 18:22:00 GMT 2002

In my program ,I want to count in every real time interrupt.but it seems 
that alarm just can count at least 10ms. how can I get RTC interrupt 
counts?

On the other hand , I prefer to revise kernel, but I don't know where the 
RTC interrupt are first Created,and its ISR routine?

>From: Andrew Lunn <andrew.lunn@ascom.ch>
>To: li hui <lhbyron@hotmail.com>
>CC: ecos-discuss@sources.redhat.com
>Subject: Re: [ECOS] how can I create real time clock interrupt?
>Date: Mon, 23 Sep 2002 12:32:32 +0200
>
>eCos will have already installed an interrupt handler on the
>RTC. Thats what its using for all its own clock generation. This means
>the clock source is already running and active. Its interrupt will be
>enabled. As soon as you call cyg_interrupt_create, your do_count
>function is active. If its broken in anyway, it will cause the crash
>you are seeing.
>
>Do you really want to take away eCos's clock source? Wouldn't it be
>better to use eCos's alarm functions to do what you want?
>
>        Andrew
>
>On Mon, Sep 23, 2002 at 09:49:46AM +0000, li hui wrote:
> > I try to create a interrupt attach to RTC,but I failed.the code I wrote 
as
> > below:
> > cyg_handle_t timer_intr_handle;
> > 	cyg_interrupt timer_intr;
> >
> > 	cyg_interrupt_create(CYGNUM_HAL_INTERRUPT_RTC, 1, 0, do_count, 0,
> > &timer_intr_handle, &timer_intr);
> > 	cyg_interrupt_enable();
> > 	cyg_interrupt_attach(timer_intr_handle);
> >
> > I download my code to target, and using GDB(insight) debug my 
code,.When
> > program run to the  cyg_interrupt_create(...) sentence, the GDB warning 
me
> > it "program recieve a signal SIGSEGV, segmentation fault"  and then
> > terminate the program.
> >
> > please tell me how to solve this problem!thanks in advance!
> >
> >
> > Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡li.hui@263.net
> > Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡Â¡2002-09-18
> >
> >
> >
> > _________________________________________________________________
> > ÃƒÃ¢Â·Ã‘ÃÃ‚Ã”Ã˜ MSN Explorer: http://explorer.msn.com/lccn/
> >
> >
> > --
> > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> >

_________________________________________________________________
Ã“Ã«ÃÂªÂ»ÃºÂµÃ„Ã…Ã³Ã“Ã‘Â½Ã¸ÃÃÂ½Â»ÃÃ·Â£Â¬Ã‡Ã«ÃŠÂ¹Ã“Ãƒ MSN Messenger: 
http://messenger.microsoft.com/cn/

-- 
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss