From: John L. <joh...@gm...> - 2009-06-23 17:32:34
|
Hi, I am trying to communicate with an ADC (using frame-sync interface) via the McBSP of the Overo. I have found the driver files arch/arm/mach-omap2/mcbsp.c and arch/arm/plat-omap/mcbsp.c but I am not sure how to use them. As far as I can the tell McBSP drivers do not make the device available through /dev/. I assume that I'll have to write a character device driver. Does anyone have a simple code example or give a can someone give a brief description on how to read data from McBSP? I have had a look at the sound drivers sound/soc/omap/omap-mcbsp.c and sound/soc/omap/overo.c which use mcbsp but I am not familiar with how ALSA drivers work and find these very hard to understand or rip apart for my purposes. Any help will be much appreciated Regards, John |
From: ___Alex___ <ale...@gm...> - 2009-12-19 05:03:42
|
Hi John, I am new with Gumstix and have the same issues with connecting ADC via McBSP (SPI). Have you made any progress studding that issue? I would appreciate if some one could share their McBSP driver usage experience. Best regards Alex john743 wrote: > > Hi, > > I am trying to communicate with an ADC (using frame-sync interface) via > the > McBSP of the Overo. > I have found the driver files arch/arm/mach-omap2/mcbsp.c and > arch/arm/plat-omap/mcbsp.c but I am not sure how to use them. > As far as I can the tell McBSP drivers do not make the device available > through /dev/. I assume that I'll have to write a character device driver. > Does anyone have a simple code example or give a can someone give a brief > description on how to read data from McBSP? > > > I have had a look at the sound drivers sound/soc/omap/omap-mcbsp.c and > sound/soc/omap/overo.c which use mcbsp but I am not familiar with how ALSA > drivers work and find these very hard to understand or rip apart for my > purposes. > > Any help will be much appreciated > Regards, > John > > ------------------------------------------------------------------------------ > > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > -- View this message in context: http://old.nabble.com/McBSP-tp24171081p26852807.html Sent from the Gumstix mailing list archive at Nabble.com. |