* [Xenomai-core] a problem about hpet device @ 2009-11-04 21:12 Guanghui, Cheng 2009-11-04 23:53 ` Gilles Chanteperdrix 0 siblings, 1 reply; 4+ messages in thread From: Guanghui, Cheng @ 2009-11-04 21:12 UTC (permalink / raw) To: xenomai [-- Attachment #1: Type: text/plain, Size: 221 bytes --] Hello: I need to use hpet device as my clock event source in my os and i have mapped this device to local place. But when i read the configuration or value all the bit is 1. Is it something wrong? Thanks Guanghui [-- Attachment #2: Type: text/html, Size: 690 bytes --] ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xenomai-core] a problem about hpet device 2009-11-04 21:12 [Xenomai-core] a problem about hpet device Guanghui, Cheng @ 2009-11-04 23:53 ` Gilles Chanteperdrix 2009-11-05 2:50 ` Guanghui, Cheng 0 siblings, 1 reply; 4+ messages in thread From: Gilles Chanteperdrix @ 2009-11-04 23:53 UTC (permalink / raw) To: Guanghui, Cheng; +Cc: xenomai Guanghui, Cheng wrote: > Hello: > I need to use hpet device as my clock event source in my os > and i have mapped this device to local place. But when i read the > configuration or value all the bit is 1. Is it something wrong? Excuse me, but what is the relation with Xenomai? -- Gilles. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xenomai-core] a problem about hpet device 2009-11-04 23:53 ` Gilles Chanteperdrix @ 2009-11-05 2:50 ` Guanghui, Cheng 2009-11-05 8:43 ` Jan Kiszka 0 siblings, 1 reply; 4+ messages in thread From: Guanghui, Cheng @ 2009-11-05 2:50 UTC (permalink / raw) To: Gilles Chanteperdrix; +Cc: xenomai [-- Attachment #1: Type: text/plain, Size: 748 bytes --] On Thursday 05 November 2009 07:53:26 Gilles Chanteperdrix wrote: > Guanghui, Cheng wrote: > > Hello: > > I need to use hpet device as my clock event source in my os > > and i have mapped this device to local place. But when i read the > > configuration or value all the bit is 1. Is it something wrong? > > Excuse me, but what is the relation with Xenomai? Sorry and maybe it is not a direct topic about the Xenomai but about the real-time systems. I have traced Xenomai at least for 4 years and read every mail from this maillist. HPET is a very good internal timer source for real-time systems. Hopefully there are some people doing HPET issue. If there is no guy about this work please ignore this mail. Thanks. Cheng Guanghui [-- Attachment #2: Type: text/html, Size: 1352 bytes --] ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xenomai-core] a problem about hpet device 2009-11-05 2:50 ` Guanghui, Cheng @ 2009-11-05 8:43 ` Jan Kiszka 0 siblings, 0 replies; 4+ messages in thread From: Jan Kiszka @ 2009-11-05 8:43 UTC (permalink / raw) To: Guanghui, Cheng; +Cc: xenomai [-- Attachment #1: Type: text/plain, Size: 914 bytes --] Guanghui, Cheng wrote: > On Thursday 05 November 2009 07:53:26 Gilles Chanteperdrix wrote: >> Guanghui, Cheng wrote: >>> Hello: >>> I need to use hpet device as my clock event source in my os >>> and i have mapped this device to local place. But when i read the >>> configuration or value all the bit is 1. Is it something wrong? >> Excuse me, but what is the relation with Xenomai? > Sorry and maybe it is not a direct topic about the Xenomai > but about the real-time systems. I have traced Xenomai at least > for 4 years and read every mail from this maillist. HPET is a very > good internal timer source for real-time systems. Hopefully there > are some people doing HPET issue. If there is no guy about > this work please ignore this mail. This is clearly off-topic for Xenomai. And note: HPET is not the best timer source as it doesn't scale (in contrast to LAPIC timers). Jan [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 257 bytes --] ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-11-05 8:43 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2009-11-04 21:12 [Xenomai-core] a problem about hpet device Guanghui, Cheng 2009-11-04 23:53 ` Gilles Chanteperdrix 2009-11-05 2:50 ` Guanghui, Cheng 2009-11-05 8:43 ` Jan Kiszka
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