altos: Add 'ao_button_get' to button driver
authorKeith Packard <keithp@keithp.com>
Thu, 28 Jul 2016 04:28:34 +0000 (21:28 -0700)
committerKeith Packard <keithp@keithp.com>
Tue, 2 Aug 2016 23:55:11 +0000 (16:55 -0700)
This returns the current state of the button; useful to check what the
value is at startup.

Signed-off-by: Keith Packard <keithp@keithp.com>

No differences found