* Re: [ECOS] isr routine does not invoke for RTC interrupt
@ 2003-09-17 16:13 Michael Anburaj
0 siblings, 0 replies; 6+ messages in thread
From: Michael Anburaj @ 2003-09-17 16:13 UTC (permalink / raw)
To: satish, ecos-discuss
Hi,
Interrupt controller Registers:
1. The corresponding Interrupt Mask bit could be set <or enable bit not set>
2. If there is a global interrupt Mask bit; could be set <or Global enable
bit not set>
ARM core register:
3. I bit in CPSR set <ARM specific – IRQs disabled>.
-Mike.
>From: Satish Kumar <satish@bvt.sc.sanyo.co.jp>
>To: Satish Kumar
><satish@bvt.sc.sanyo.co.jp>,ecos-discuss@sources.redhat.com
>Subject: Re: [ECOS] isr routine does not invoke for RTC interrupt
>Date: Wed, 17 Sep 2003 19:17:26 +0900
>
>Ok,
> i have used the system timer and not the RTC..the interrupts are
>gettin generated , but the isr routines are not being called..what could
>be the reason..?
>
>thanks
>satish
>
>
>
>
>On Wed, 17 Sep 2003 12:14:16 +0200
>Andrew Lunn <andrew@lunn.ch> wrote:
>
> > On Wed, Sep 17, 2003 at 06:50:04PM +0900, Satish Kumar wrote:
> > >
> > > Hi,
> > > i m testing this clocktruth.cxx in the kernel/tests/ directory
> > > to test my on-board timer. well i see that though the corresponding
> > > timer interrupt gets generated, the isr routine is not called..i don`t
> > > understand how to solve this problem.
> > >
> > > also my RTC time period is set to 1, since it generates 1 sec
> > > timer interval for 1 Hz clock input. i m not sure were i have gone
>wrong.
> > >
> > > plz feel free to ask details to answer my queries..
> >
> > RTC means real time clock. It gives you the time of day, 11.07 BST,
> > 17/09/2003.
> >
> > eCos does not use this sort of clock. eCos uses a plain timer. These
> > are generally a count down register clocked by a high speed
> > clock. When it reaches zero, it interrupts and reloads the
> > counter. eCos normally sets this up to generate 100 interrupts per
> > second.
> >
> > So you need to change you HAL so that i uses a timer and not the RTC.
> >
> > Andrew
> >
> >
>
>--
>Satish Kumar <satish@bvt.sc.sanyo.co.jp>
>
>
>--
>Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
>and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ECOS] isr routine does not invoke for RTC interrupt
@ 2003-09-18 7:32 Satish Kumar
0 siblings, 0 replies; 6+ messages in thread
From: Satish Kumar @ 2003-09-18 7:32 UTC (permalink / raw)
To: ecos-discuss
well, i have done only the platform porting for my target board which
has a arm926ej-s core.
my hal_clock_xxxx routines are making use of system timers and not the
real time clock.
i have done some hard-core debugging to some extent and
found that, the corresponding interrupt is generated for the down-count
timer, and the corresponding interrupt bits are set in the vector
registers and the timer registers..and also the correct isr routine is
attached to this vector, but it does not enter the RealTimeClock::isr ()
routine when the interrupt is generated.
when i run the clcoktruth.cxx program in the kernel/tests directory;
my programs hangs in the while loop:
// First, print 100 lines as fast as you can, of distinct ticks.
for ( i = 0; i < 100; i++ ) {
now = rtc->current_value_lo();
then = now;
while ( then == now )
now = rtc->current_value_lo();
diag_printf( "INFO<time now %8d>\n", now );
}
the now value is never updated, i.e the rtc fails to read the current counter
value..
i m just not gettin why the isr routine is not called..!!
someone help plzz
satish
On Wed, 17 Sep 2003 11:57:11 +0100
"Robert Cragie" <rcc@jennic.com> wrote:
> As I mentioned before, look at the hal_clock_xxx routines for your
> platform - these will tell you which timer and interrupt vector is being
> used. If you have done a port yourself, maybe there is a problem here.
>
> You still seem to be getting confused with the RTC and the timers used for
> eCos 'clocks'.
>
> Robert Cragie, Design Engineer
> _______________________________________________________________
> Jennic Ltd, Furnival Street, Sheffield, S1 4QT, UK
> http://www.jennic.com Tel: +44 (0) 114 281 2655
> _______________________________________________________________
>
> > -----Original Message-----
> > From: ecos-discuss-owner@sources.redhat.com
> > [mailto:ecos-discuss-owner@sources.redhat.com]On Behalf Of Andrew Lunn
> > Sent: 17 September 2003 11:26
> > To: Satish Kumar
> > Cc: ecos-discuss@sources.redhat.com
> > Subject: Re: [ECOS] isr routine does not invoke for RTC interrupt
> >
> >
> > On Wed, Sep 17, 2003 at 07:17:26PM +0900, Satish Kumar wrote:
> > > Ok,
> > > i have used the system timer and not the RTC..the interrupts are
> > > gettin generated , but the isr routines are not being called..what could
> > > be the reason..?
> >
> > 1) You are using the wrong interrupt vector
> > 2) You are not enabling the interrupt in the interrupt controller.
> > 3) You have all interrupts disabled for some reason.
> >
> > Make sure you have asserts enabled. Then check which vector its
> > registering the interrupt handler on.
> >
> > Andrew
> >
> > --
> > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> >
> >
--
Satish Kumar <satish@bvt.sc.sanyo.co.jp>
--------------------- Original Message Ends --------------------
--
Satish Kumar <satish@bvt.sc.sanyo.co.jp>
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ECOS] isr routine does not invoke for RTC interrupt
2003-09-17 10:17 ` Satish Kumar
@ 2003-09-17 10:25 ` Andrew Lunn
0 siblings, 0 replies; 6+ messages in thread
From: Andrew Lunn @ 2003-09-17 10:25 UTC (permalink / raw)
To: Satish Kumar; +Cc: ecos-discuss
On Wed, Sep 17, 2003 at 07:17:26PM +0900, Satish Kumar wrote:
> Ok,
> i have used the system timer and not the RTC..the interrupts are
> gettin generated , but the isr routines are not being called..what could
> be the reason..?
1) You are using the wrong interrupt vector
2) You are not enabling the interrupt in the interrupt controller.
3) You have all interrupts disabled for some reason.
Make sure you have asserts enabled. Then check which vector its
registering the interrupt handler on.
Andrew
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ECOS] isr routine does not invoke for RTC interrupt
2003-09-17 10:14 ` Andrew Lunn
@ 2003-09-17 10:17 ` Satish Kumar
2003-09-17 10:25 ` Andrew Lunn
0 siblings, 1 reply; 6+ messages in thread
From: Satish Kumar @ 2003-09-17 10:17 UTC (permalink / raw)
To: Satish Kumar, ecos-discuss
Ok,
i have used the system timer and not the RTC..the interrupts are
gettin generated , but the isr routines are not being called..what could
be the reason..?
thanks
satish
On Wed, 17 Sep 2003 12:14:16 +0200
Andrew Lunn <andrew@lunn.ch> wrote:
> On Wed, Sep 17, 2003 at 06:50:04PM +0900, Satish Kumar wrote:
> >
> > Hi,
> > i m testing this clocktruth.cxx in the kernel/tests/ directory
> > to test my on-board timer. well i see that though the corresponding
> > timer interrupt gets generated, the isr routine is not called..i don`t
> > understand how to solve this problem.
> >
> > also my RTC time period is set to 1, since it generates 1 sec
> > timer interval for 1 Hz clock input. i m not sure were i have gone wrong.
> >
> > plz feel free to ask details to answer my queries..
>
> RTC means real time clock. It gives you the time of day, 11.07 BST,
> 17/09/2003.
>
> eCos does not use this sort of clock. eCos uses a plain timer. These
> are generally a count down register clocked by a high speed
> clock. When it reaches zero, it interrupts and reloads the
> counter. eCos normally sets this up to generate 100 interrupts per
> second.
>
> So you need to change you HAL so that i uses a timer and not the RTC.
>
> Andrew
>
>
--
Satish Kumar <satish@bvt.sc.sanyo.co.jp>
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ECOS] isr routine does not invoke for RTC interrupt
2003-09-17 9:50 Satish Kumar
@ 2003-09-17 10:14 ` Andrew Lunn
2003-09-17 10:17 ` Satish Kumar
0 siblings, 1 reply; 6+ messages in thread
From: Andrew Lunn @ 2003-09-17 10:14 UTC (permalink / raw)
To: Satish Kumar; +Cc: ecos-discuss
On Wed, Sep 17, 2003 at 06:50:04PM +0900, Satish Kumar wrote:
>
> Hi,
> i m testing this clocktruth.cxx in the kernel/tests/ directory
> to test my on-board timer. well i see that though the corresponding
> timer interrupt gets generated, the isr routine is not called..i don`t
> understand how to solve this problem.
>
> also my RTC time period is set to 1, since it generates 1 sec
> timer interval for 1 Hz clock input. i m not sure were i have gone wrong.
>
> plz feel free to ask details to answer my queries..
RTC means real time clock. It gives you the time of day, 11.07 BST,
17/09/2003.
eCos does not use this sort of clock. eCos uses a plain timer. These
are generally a count down register clocked by a high speed
clock. When it reaches zero, it interrupts and reloads the
counter. eCos normally sets this up to generate 100 interrupts per
second.
So you need to change you HAL so that i uses a timer and not the RTC.
Andrew
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 6+ messages in thread
* [ECOS] isr routine does not invoke for RTC interrupt
@ 2003-09-17 9:50 Satish Kumar
2003-09-17 10:14 ` Andrew Lunn
0 siblings, 1 reply; 6+ messages in thread
From: Satish Kumar @ 2003-09-17 9:50 UTC (permalink / raw)
To: ecos-discuss
Hi,
i m testing this clocktruth.cxx in the kernel/tests/ directory
to test my on-board timer. well i see that though the corresponding
timer interrupt gets generated, the isr routine is not called..i don`t
understand how to solve this problem.
also my RTC time period is set to 1, since it generates 1 sec
timer interval for 1 Hz clock input. i m not sure were i have gone wrong.
plz feel free to ask details to answer my queries..
thanks
satish
--
Satish Kumar <satish@bvt.sc.sanyo.co.jp>
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
^ permalink raw reply [flat|nested] 6+ messages in thread
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