Le lundi 29 mai 2006 à 17:45 +0200, Gilles Chanteperdrix a écrit : > Stelian Pop wrote: > > If you have specific questions feel free to ask. But I suggest you read > > and try to understand the code first. > > Maybe we could provide a quick overview of how this works, Stelian, > please correct me if I am wrong.
Your description is accurate. However, such deep knowledge on the inner workings should not be needed to port Xenomai to a new ARM platform. (well, in case it works immediately. Debugging the port could need more knowledge :) ). In the list of 'undocumented' functions there is also __ipipe_mach_get_tsc() which should return some accurate time information. Most of the ARM platforms do not have a special Time Stamp Clock register, so most of the time the tick count is used instead (giving a TSC resolution of one microsecond). This is what standard Linux also use. If the platform has something more appropriate than the core timer for measuring the time, this function is where you need to wire it. Stelian. -- Stelian Pop <[EMAIL PROTECTED]> Open Wide _______________________________________________ Xenomai-core mailing list Xenomaiemail@example.com https://mail.gna.org/listinfo/xenomai-core