Hi Gilles,
i learned the ipipe trace that i send you but i don't unserstand why i
have three timer reprogramming in few useconds.
Can you explain me the behaviour ?
Il 08/04/2012 00:17, Gilles Chanteperdrix ha scritto:
On 04/06/2012 06:59 PM, Roberto Bielli wrote:
Hi Gilles,
i made all
On 04/10/2012 10:18 AM, Roberto Bielli wrote:
Hi Gilles,
i learned the ipipe trace that i send you but i don't unserstand why i
have three timer reprogramming in few useconds.
Can you explain me the behaviour ?
Can you resend the trace and give us the time where this happens?
Anyway, the
Hi Gilles,
I don't find the end of last __ipipe_grab_irq in the trace that i send you.
Is it correct ?
Il 08/04/2012 00:17, Gilles Chanteperdrix ha scritto:
On 04/06/2012 06:59 PM, Roberto Bielli wrote:
Hi Gilles,
i made all your modifies and re-read all corect register but the problem
is
On 04/10/2012 10:43 AM, Roberto Bielli wrote:
Hi Gilles,
I don't find the end of last __ipipe_grab_irq in the trace that i send you.
Is it correct ?
Yes, because the timer interrupt reschedules and wakes up the periodic
task. I had a look at the timer programming events, it is true that the
Hi Gilles,
i look at the processor errata but for the imx25 there are no errata
elements on timer.
I see that tsc uses the same timer.
Does xenomai use the tsc for the next timer period ?
Il 10/04/2012 10:45, Gilles Chanteperdrix ha scritto:
On 04/10/2012 10:43 AM, Roberto Bielli wrote:
On 04/10/2012 10:58 AM, Roberto Bielli wrote:
Hi Gilles,
i look at the processor errata but for the imx25 there are no errata
elements on timer.
I see that tsc uses the same timer.
Does xenomai use the tsc for the next timer period ?
If you look at the trace, you will see that with the
On 04/10/2012 10:58 AM, Roberto Bielli wrote:
Hi Gilles,
i look at the processor errata but for the imx25 there are no errata
elements on timer.
It is strange that you use linux 2.6.31 on imx25: linux 2.6.31 does not
support imx25.
The I-pipe support has not been written for imx25, so, it
On 04/10/2012 11:06 AM, Gilles Chanteperdrix wrote:
On 04/10/2012 10:58 AM, Roberto Bielli wrote:
Hi Gilles,
i look at the processor errata but for the imx25 there are no errata
elements on timer.
It is strange that you use linux 2.6.31 on imx25: linux 2.6.31 does not
support imx25.
Hi Gilles,
the steps for supporting imx25 have been:
1. We buy a board with imx25
2. Our supplier made the porting of linux 2.6.31 freescale with imx25
3. we put a xenomai 2.5.6 and we have adapted for imx25. The only
changes is this (because imx25 registers are identical to mx3 ):
old:
Hi Gilles,
here is my time.c
Il 10/04/2012 11:11, Gilles Chanteperdrix ha scritto:
On 04/10/2012 11:06 AM, Gilles Chanteperdrix wrote:
On 04/10/2012 10:58 AM, Roberto Bielli wrote:
Hi Gilles,
i look at the processor errata but for the imx25 there are no errata
elements on timer.
It is
On 04/10/2012 11:19 AM, Roberto Bielli wrote:
Hi Gilles,
the steps for supporting imx25 have been:
1. We buy a board with imx25
2. Our supplier made the porting of linux 2.6.31 freescale with imx25
3. we put a xenomai 2.5.6 and we have adapted for imx25. The only
changes is this
On 04/10/2012 11:21 AM, Roberto Bielli wrote:
Hi Gilles,
here is my time.c
Looks fine, though I do not understand why you do not use timer_is_v2
instead of cpu_is_mx3 || cpu_is_mx25. I think the problem is elsewhere,
and I suggest you check whether linux without xenomai has or has not the
On 04/10/2012 11:21 AM, Roberto Bielli wrote:
Hi Gilles,
here is my time.c
Though you have not made all the changes I suggested. Here is the time.c
I would use.
--
Gilles.
/*
* linux/arch/arm/plat-mxc/time.c
*
* Copyright
Hi Gilles,
i tried your code but th behavior is the same.
Then i tried a linux base app and works correctly.
Il 10/04/2012 11:37, Gilles Chanteperdrix ha scritto:
On 04/10/2012 11:21 AM, Roberto Bielli wrote:
Hi Gilles,
here is my time.c
Though you have not made all the changes I
On 04/10/2012 12:39 PM, Roberto Bielli wrote:
Hi Gilles,
i tried your code but th behavior is the same.
Then i tried a linux base app and works correctly.
The tsc physical address passed to user-space looks wrong.
void __ipipe_mach_get_tscinfo(struct __ipipe_tscinfo *info)
{
On 04/10/2012 12:39 PM, Roberto Bielli wrote:
Hi Gilles,
i tried your code but th behavior is the same.
Then i tried a linux base app and works correctly.
In the exact same conditions? With the crunching task running with
SCHED_FIFO, priority 1, and the periodic task running with
Hi Gilles,
i added this in configure of xenomai so i pass --enable-arm-mach=imx25
imx25)arch=5
tsc_type=__XN_TSC_TYPE_FREERUNNING;;
Furthermore in plat-mxc/include/mach/mxc.h explain which are cpumx2 and
imx25 is NOT mx2
#define cpu_is_mx2()(cpu_is_mx21() ||
Il 10/04/2012 14:06, Gilles Chanteperdrix ha scritto:
On 04/10/2012 02:05 PM, Roberto Bielli wrote:
Hi Gilles,
i added this in configure of xenomai so i pass --enable-arm-mach=imx25
imx25)arch=5
tsc_type=__XN_TSC_TYPE_FREERUNNING;;
Furthermore in
here is some logs.
status=on:setup=616:clock=509343446344:timerdev=mxc_timer1:clockdev=mxc_timer1
root@AXC25:/data# cat /proc/xenomai/timer
status=on:setup=616:clock=509413956366:timerdev=mxc_timer1:clockdev=mxc_timer1
root@AXC25:/data# cat /proc/xenomai/timer
On 04/10/2012 02:33 PM, Roberto Bielli wrote:
Il 10/04/2012 13:49, Gilles Chanteperdrix ha scritto:
On 04/10/2012 12:39 PM, Roberto Bielli wrote:
Hi Gilles,
i tried your code but th behavior is the same.
Then i tried a linux base app and works correctly.
In the exact same conditions? With
In the xenomai example the task periodic is 2ms not 200us. (
rt_task_sleep( 2ms 000us 000ns ) );
And the 10ms is because the default system time period of the timer
without xenomai is ~10ms.
So a process that execute in linux base can be re-scheduled only when
the timer generate an interrupt ,
On 04/10/2012 02:58 PM, Roberto Bielli wrote:
In the xenomai example the task periodic is 2ms not 200us. (
rt_task_sleep( 2ms 000us 000ns ) );
sorry, I misred.
And the 10ms is because the default system time period of the timer
without xenomai is ~10ms.
So a process that execute in linux
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