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path: root/src/drivers/ao_matrix.c
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* altos: Drive row low instead of high in matrix driverKeith Packard2017-04-09
| | | | | | Driving it high won't work all that well as we're looking for zero bits. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: add button matrix driverKeith Packard2017-04-02
Scans the matrix once per clock tick queuing events for changed keys. Signed-off-by: Keith Packard <keithp@keithp.com>