Date: Thu, 6 Jan 2011 21:07:57 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Cc: Frederic Praca <frederic.praca@freebsd-fr.org> Subject: Re: How to force the class of a device Message-ID: <201101062107.57905.hselasky@c2i.net> In-Reply-To: <20110106185511.3d947c7a@coruscant.dnsalias.net> References: <20110106185511.3d947c7a@coruscant.dnsalias.net>
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On Thursday 06 January 2011 18:55:11 Frederic Praca wrote: > Hello guys, > I recently bought a guitar multieffect device BOSS ME-25. It has a USB > interface which is used to transfer several settings between its memory > and the computer. > Off course, BOSS only delivers a program and a driver for Windows or > Mac but I also found a program for Linux. > The driver enables to use the ME-25 as a MIDI device but, dumping the > device description, the device class is vendor specific as shown below : > coruscant# usbconfig -u 1 -a 3 dump_device_desc > ugen1.3: <ME-25 BOSS> at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON > > bLength = 0x0012 > bDescriptorType = 0x0001 > bcdUSB = 0x0110 > bDeviceClass = 0x00ff > bDeviceSubClass = 0x0000 > bDeviceProtocol = 0x00ff > bMaxPacketSize0 = 0x0008 > idVendor = 0x0582 > idProduct = 0x0113 > bcdDevice = 0x0100 > iManufacturer = 0x0001 <BOSS> > iProduct = 0x0002 <ME-25> > iSerialNumber = 0x0000 <no string> > bNumConfigurations = 0x0001 > > > Is there a way to attach the device to the uaudio driver to use it as > a MIDI device ? Well, is this as simple or not ? ;-) > Hi, The FreeBSD USB MIDI driver is part of the USB audio driver: src/sys/dev/sound/usb/uaudio.c You can try making it attach by modifying the uaudio_attach() routine, but it will only work given that the actual data format on the MIDI bulk endpoints are identical to the USB MIDI standard. --HPS
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