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Message-Id: <200612151709.48415.oliver@neukum.name> Date: Fri, 15 Dec 2006 17:19:37 +0100 (MET) From: Oliver Neukum <oliver@...kum.name> To: Phillip Susi <psusi@....rr.com> Cc: Oliver Neukum <oliver@...kum.org>, linux-kernel@...r.kernel.org Subject: Re: interface for modems with out of band signalling Am Freitag, 15. Dezember 2006 16:53 schrieb Phillip Susi: > Oliver Neukum wrote: > > Hi, > > > > I have got a question about modems which use the AT command set, but > > don't use in band signalling like true rs232 modems. Would two device nodes > > per communication channel be a good interface? > > Huh? What do you mean "don't use in band signaling"? If you are asking > how you issue AT commands to the modem while connected, you have to > break to command mode. IIRC, this involves sending a special break No, I am talking about how to support modems which don't have a command mode. These USB modems don't accept AT commands through the same channel as data. They take them encapsulated in special command messages to endpoint 0. How do I export this capability to user space? I am thinking about having two device nodes. But there may be a driver setting another precedent. Therefor I am asking. Regards Oliver - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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