01-30-2016, 08:36 AM
During U-Boot startup I see the following message repeated
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/
Code:
key pressed value=0x1This 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/