Support GPIO pull-ups

[captncraig]

The pull-up and down functionality is currently unimplemented in the generic host. I would really like this functionality to be available for rpi.

My current workaround is using github.com/stianeikeland/go-rpio only to set the pull-ups. I'd really rather stick to embd only because I need the i2c and other awesome features.

Their implementation is at https://github.com/stianeikeland/go-rpio/blob/master/rpio.go#L232. It involves some tricky memory mapping of a register file that I am not super comfortable with.

[kidoman]

I will give it a shot :)

Sent from my iPhone

On 29-Jun-2015, at 4:19 pm, Craig Peterson [email protected] wrote:

The pull-up and down functionality is currently unimplemented in the generic host. I would really like this functionality to be available for rpi.

My current workaround is using github.com/stianeikeland/go-rpio only to set the pull-ups. I'd really rather stick to embd only because I need the i2c and other awesome features.

Their implementation is at https://github.com/stianeikeland/go-rpio/blob/master/rpio.go#L232. It involves some tricky memory mapping of a register file that I am not super comfortable with.

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[snikch]

Hey @kidoman - did you ever get a chance to have a look up pull up/down?

[wallaceicy06]

+1

[ivoras]

Just as a notice to anyone in 2017: pullups/pulldowns are still not implemented.
Basically this library cannot be used for driving buttons without additional hardware.
And it's possible to implement them: https://github.com/stianeikeland/go-rpio/blob/master/rpio.go#L232