Spurious interrups from KEYADC
#1
During U-Boot startup I see the following message repeated

Code:
key pressed value=0x1

This is obviously caused by interrupts from the KEYADC. As far as I can see, this pin is left floating, but should likely be weakly (1..10 MOhm) pulled to GND.

I assume the purpose of this pin is to implement an R2R ladder input, like

http://hackaday.com/2012/03/02/r2r-ladde...e-adc-pin/
  Reply


Messages In This Thread
Spurious interrups from KEYADC - by StefanB - 01-30-2016, 08:36 AM
RE: Spurious interrups from KEYADC - by tllim - 01-30-2016, 11:42 AM

Forum Jump:


Users browsing this thread: 2 Guest(s)