At+wiocfg parameters


#1

Hi,

we are using the mangOH Red with wp7608.
I am trying to understand the wiocfg parameters. I had a few questions for the internal pull type parameter

(Internal pull type for the I/O port)
• 0—No pull
• 1—Pull down
• 2—Keeper
• 3—Pull up

I was wondering What is the Keeper type significance ?
what happens if we have an external pull up 100k connected to the line in the above scenarios ?

Thanks,
Siva


#2

The keeper keeps the output level the same even if you turn the driver off. So it won’t drive much but it’ll keep the pin from floating.