thnx john, will check it out On Friday, December 20, 2013 9:23:18 AM UTC+5:30, John Syne wrote: > > > > From: Dhanushka Jayaweera <[email protected] <javascript:>> > Reply-To: <[email protected] <javascript:>> > Date: Thursday, December 19, 2013 at 7:42 PM > To: <[email protected] <javascript:>> > Cc: Amalinda J' Gamage <[email protected] <javascript:>> > Subject: Re: [beagleboard] Check if ADC is giving real values or floating > values > > hey Gerald, > > you are helpful as always. can u please give me few hints about pullups? i > tried googling, but couldn't understand much. > > thnx > > On Friday, December 20, 2013 8:21:16 AM UTC+5:30, Gerald wrote: >> >> Some pins have pullups on them in touchscreen mode. I can't tell you how >> to do it, but you need to turn those pullups off. >> > You probably need to read up on the DeviceTree and setting the mode for > each pin. Best place to read about device tree is here: > > https://github.com/jadonk/validation-scripts/tree/master/test-capemgr > > Regards, > John > > >> Gerald >> >> >> >> On Thu, Dec 19, 2013 at 8:30 PM, Dhanushka Jayaweera >> <[email protected]>wrote: >> >>> hey guys, >>> >>> I'm pretty new to this BBB. I'm trying to read values from ADC pins. It >>> works as expected when I have connected ADC pins to power. >>> But when pins are disconnected from power, it still gives values. >>> Sometimes these values are pretty close to real values. >>> >>> How can I filter them out?? >>> >>> Thanks >>> >>> -- >>> 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 [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> -- > 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 [email protected] <javascript:>. > For more options, visit https://groups.google.com/groups/opt_out. > >
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