Re: [Adeos-main] at91sam9260

[Michael Trimarchi <trimarchimichael@domain.hid>]

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Hi,
>> >Wait a minute. You mean that you want more than 5000 interrupts by
>> >second ? Are you sure you do not get overruns with plain, unpatched
>> >Linux, if you load it sufficiently ?
>> If you do a simple count ( 115200 bps ) considering buffer length = 1
 the
>> answer is yes.
>>
>> :)
>>
>> regards Michael
>>
>> PS work with linux

>Do you observe this behaviour with I-pipe only or with Xenomai running
>? If we xenomai, could you try only booting Linux with I-pipe enabled
>?
>
>-- 
>                                               Gilles Chanteperdrix

I report this only using ipipe. I have some trouble with xenomai, that I will try to solve ( see below )


== Sampling period: 100 us
== Test mode: periodic user-mode task
== All results in microseconds
warming up...
I-pipe: Detected illicit call from domain 'Xenomai'
        into a service reserved for domain 'Linux' and below.
[<c0021988>] (show_stack+0x0/0x48) from [<c005cca0>] (ipipe_check_context+0x88/0xa4)
[<c005cc18>] (ipipe_check_context+0x0/0xa4) from [<c0057e40>] (search_module_extables+0x3c/0xe8)
 r5:00000000 r4:c0063cf0
[<c0057e04>] (search_module_extables+0x0/0xe8) from [<c004887c>] (search_exception_tables+0x30/0x3c)
 r8:00000154 r7:00000017 r6:00000000 r5:c0271e00 r4:c0063cf0
[<c004884c>] (search_exception_tables+0x0/0x3c) from [<c00231c0>] (fixup_exception+0x18/0x30)
 r4:c0271e00
[<c00231a8>] (fixup_exception+0x0/0x30) from [<c002339c>] (__do_kernel_fault+0x24/0x7c)
 r4:00000154
[<c0023378>] (__do_kernel_fault+0x0/0x7c) from [<c0023670>] (do_page_fault+0x27c/0x29c)
 r7:00000000 r6:c0266520 r5:c01a1e6c r4:ffffffff
[<c00233f4>] (do_page_fault+0x0/0x29c) from [<c001c2c8>] (do_DataAbort+0x3c/0x11c)
[<c001c28c>] (do_DataAbort+0x0/0x11c) from [<c001cb40>] (__dabt_svc+0x40/0x60)
Exception stack(0xc0271e00 to 0xc0271e48)
1e00: 204c0000 c0457860 40000093 40000093 c0457860 00000000 c01bf860 00000000 
1e20: c0280b30 c0270000 c01bf890 c0271e80 00000000 c0271e48 c0063ce4 c0063cf0 
1e40: 40000093 ffffffff                                                       
 r8:c0280b30 r7:00000000 r6:c01bf860 r5:c0271e34 r4:ffffffff
[<c00636ec>] (xnpod_schedule+0x0/0x7ac) from [<c00608f8>] (xnintr_clock_handler+0xa8/0x124)
[<c0060850>] (xnintr_clock_handler+0x0/0x124) from [<c005deb0>] (__ipipe_dispatch_wired+0xdc/0x104)
 r8:c0266520 r7:c01bf480 r6:c01a8120 r5:c01aa4e0 r4:c01bd140
[<c005ddd4>] (__ipipe_dispatch_wired+0x0/0x104) from [<c0021efc>] (__ipipe_handle_irq+0x94/0x1c8)
 r6:c0271f20 r5:00000011 r4:c01bd140
[<c0021e68>] (__ipipe_handle_irq+0x0/0x1c8) from [<c00220f4>] (__ipipe_grab_irq+0xc4/0x120)
[<c0022030>] (__ipipe_grab_irq+0x0/0x120) from [<c001cb90>] (__irq_svc+0x30/0x78)
 r8:c0266520 r7:c0457860 r6:00000011 r5:fefff000 r4:ffffffff
[<c014e0d4>] (schedule+0x0/0x814) from [<c006af54>] (gatekeeper_thread+0xfc/0x194)
[<c006ae58>] (gatekeeper_thread+0x0/0x194) from [<c004b1a4>] (kthread+0x58/0x90)
[<c004b14c>] (kthread+0x0/0x90) from [<c003780c>] (do_exit+0x0/0x94c)
 r6:00000000 r5:00000000 r4:00000000


There is a patch to using the serial device with DMA too and I use it with other board

 equipped with the at91rm9200. But my question is this:



spi prioriy < serial priority



In linux the interrupt nesting is controlled by the hardware logic. Is it true?



The priority is mainted using ipipe in at91sam9260? 





Regards Michael






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