From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============4189386651317342630==" MIME-Version: 1.0 From: Denis Kenzior Subject: Re: query Date: Thu, 30 Jul 2015 16:21:21 -0500 Message-ID: <55BA9551.6000900@gmail.com> In-Reply-To: <222E70FA67D72A4FB8EEDF5AF01724ACCF2637@BGSMSX102.gar.corp.intel.com> List-Id: To: ofono@ofono.org --===============4189386651317342630== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Ram, On 07/30/2015 07:49 AM, Kallumari Nagaraja Rao, RammohanX wrote: > Hi Denis, > > Can't we use the existing ofono UBLOX driver to work with serial interfac= es instead of USB interface ? > Not in its current form, no. USB devices generally come pre-multiplexed. What this means is that = they expose multiple AT ports (e.g. ttyACM1, ttyACM2, etc). oFono = requires two if the modem uses PPP (which the ublox driver is currently = using). This is necessary as a second control port is needed for = control while another is being occupied by PPP packets. Serial devices use a single serial port and will require some form of = multiplexing in order to enable properly. Most support 07.10/27.010 = multiplexing via AT+CMUX. Your options are to write a new modem driver for your device, or extend = the ublox driver to handle serial devices. Refer to plugins/ifx.c or = plugins/calypso.c for an example of a driver that uses multiplexing. Regards, -Denis --===============4189386651317342630==--