Use an interrupt maybe to tell SW to ignore? Might slow things down. Gerald
On Wed, Jul 2, 2014 at 9:08 AM, <[email protected]> wrote: > We've designed a product which uses a BeagleBone Black with a resistive > touch screen. The BBB controls some external hardware which is designed to > generate large amounts of EMI. When gating is on, the hardware resonates > at around 200 kHz, most likely with large amounts of harmonics. When > gating is off, the hardware is off and not generating substantial EMI. > > At the moment gating is enabled, the EMI starts and the touchscreen gets a > phantom press. Gating can be as low as 3 Hz (50% duty cycle?) and you can > hear a "tick tick tick" sound at 3 Hz. At every "tick", the cursor jumps > to a random position. At 100% duty cycle or at very high gating > frequencies, the touchscreen behaves normally. > > Is there a way to disable touchscreen sampling for a short time period > when the gate signal (generated by the BBB) is asserted? > > -- > 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/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 [email protected]. For more options, visit https://groups.google.com/d/optout.
