From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernhard Walle Date: Mon, 8 May 2006 00:21:06 +0200 Message-ID: References: <050720061514.21865.445E0ED2000D33230000556922058863609C0E0301089BD2040A969B0799@domain.hid> <445E68C0.7060404@domain.hid> <200605072202.22555.witzel.thomas@domain.hid> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: news Subject: [Xenomai-help] Re: RTDM driver questions List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org Hi Thomas, Thomas Witzel [2006-05-07]: > > > Generally spoken, mmap can make sense if you have a significant amount > > of data to transfer, not "just" a few kbyte/s. RTDM has the elementary > > support for such device interfaces now, and this has already been used > > for a frame-grabbing driver. > What would be the proper procedure for just a few kbytes ? I expect less than > 500 kB./second in my application. Simply read() / write() ? Regards, Bernhard -- Das Telefon hat zu viele ernsthaft zu bedenkende Mängel für ein Kommunikationsmittel. Das Gerät ist von Natur aus von keinem Wert für uns. -- »Western Union«, Interne Meldung (1876)