diff options
Diffstat (limited to 'include/motion_lid.h')
| -rw-r--r-- | include/motion_lid.h | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/include/motion_lid.h b/include/motion_lid.h index 110d614811..2816a70bdb 100644 --- a/include/motion_lid.h +++ b/include/motion_lid.h @@ -11,27 +11,15 @@ #include "host_command.h" #include "math_util.h" -/** - * This structure defines all of the data needed to specify the orientation - * of the base and lid accelerometers in order to calculate the lid angle. +/* + * We will change our tablet mode status when we are "convinced" that it has + * changed. This means we will have to consecutively calculate our new tablet + * mode while the angle is stable and come to the same conclusion. The number + * of consecutive calculations is the debounce count with an interval between + * readings set by the motion_sense task. This should avoid spurious forces + * that may trigger false transitions of the tablet mode switch. */ -struct accel_orientation { - /* Rotation matrix to rotate positive 90 degrees around the hinge. */ - mat33_fp_t rot_hinge_90; - - /* - * Rotation matrix to rotate 180 degrees around the hinge. The value - * here should be rot_hinge_90 ^ 2. - */ - mat33_fp_t rot_hinge_180; - - /* Vector pointing along hinge axis. */ - intv3_t hinge_axis; -}; - -/* Link global structure for orientation. This must be defined in board.c. */ -extern const struct accel_orientation acc_orient; - +#define TABLET_MODE_DEBOUNCE_COUNT 3 /** * Get last calculated lid angle. Note, the lid angle calculated by the EC |