From: <sun19920...@gmail.com> Reply-To: <beagleboard@googlegroups.com> Date: Tuesday, June 10, 2014 at 10:32 PM To: <beagleboard@googlegroups.com> Subject: Re: [beagleboard] beaglebone ADC AIN0 AIN2 AIN3 cannot be used?
> Hi, John. > Could you teach me how to disable touchscreen driver？ > should I delete the "cape-bone-lcd3-00A0.dtbo" under /lib/firmware ? > or should I modify "am335x-bone.dtb" under /boot ？ You need to disable the touchscreen in the kernel .config. Easiest way is to do the following: In the Kernel folder: make xconfig Under Device Drivers/Staging drivers Unselect "TI Touchscreen Interface” Save and rebuild kernel Alternatively, edit the .config file: Search for CONFIG_TOUCHSCREEN_TI_AM335X_TSC=y Change to # CONFIG_TOUCHSCREEN_TI_AM335X_TSC is not set Save and rebuild kernel. http://eewiki.net/display/linuxonarm/BeagleBone+Black Regards, John > >> >> From: <sun19...@gmail.com <javascript:> > >> Reply-To: <beagl...@googlegroups.com <javascript:> > >> Date: Tuesday, June 10, 2014 at 2:10 AM >> To: <beagl...@googlegroups.com <javascript:> > >> Subject: [beagleboard] beaglebone ADC AIN0 AIN2 AIN3 cannot be used? >> >>> >>> I used beaglebone white to implement ADC. >>> However, when I use a signal generator and oscilloscope to see the input >>> wave, >>> There is always 1.8V in AIN0 , and always 0V in AIN2 and AIN3, but it is >>> correct when I use AIN1 4 5 6, >>> Could anyone help me？ >> Disable the touchscreen driver. >> >> Regards, >> John >>> >>> >>> does that adc internal resistance cause it？ Or how should I modify >>> ADC-related files to get correct signal？ >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to beagleboard...@googlegroups.com <javascript:> . >>> For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
