From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <46519AD0.80804@domain.hid> Date: Mon, 21 May 2007 17:12:48 +0400 From: Igor Plyatov MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [Xenomai-help] 10us periodical task (Xenomai vs. RTAI) Reply-To: plyatov@domain.hid List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org Hello! Thank to all excellent guys who make Xenomai (great work)! I'm novice in Xenomai. One day I read the article at "Linux Devices" about software radio on Linux with RTAI: http://www.linuxdevices.com/articles/AT3239582376.html "Coupard's demo generate a carrier frequency of 153 KHz, based on running the real-time task on every system timer interrupt, or 306,000 times per second. Since at that rate it required a 500 MHz Pentium or faster." I try to make something like this with Xenomai's RTDM, but do not get good results. I need a kernel task, with period 10us, which do little calculations and output data to the LPT port. What I can get with acceptable jitter (and without any calculations in task): 20us on 2.4GHz Pentium4 100us on 150MHz Pentium Is it possible to get 10us results in Xenomai or not? May be better to use only ADEOS functions for my task, is it faster then RTDM? What is the state of RTAI nowadays, is it still a live? -- Igor Plyatov