imu_utils.c File Reference

Macros
#define	SHAKE_THRESHOLD   300
#define	SHAKE_HYSTERESIS   10

Functions
bool	checkForShake (vec3d_t *lastOrientation, list_t *shakeHistory, bool *isShook)
	Check if a shake was detected. All of the arguments for this function are both inputs and outputs.

Macro Definition Documentation

SHAKE_THRESHOLD

#define SHAKE_THRESHOLD   300

SHAKE_HYSTERESIS

#define SHAKE_HYSTERESIS   10

Function Documentation

checkForShake()

bool checkForShake	(	vec3d_t *	lastOrientation,
		list_t *	shakeHistory,
		bool *	isShook )

Check if a shake was detected. All of the arguments for this function are both inputs and outputs.

This will return if the shake state changed, not if it is shaking or not. The argument isShook will contain the shake state.

This calls accelIntegrate() and accelGetAccelVecRaw(), so neither of those functions needs to be called elsewhere. Because this function calls accelIntegrate(), it should be called relatively frequently.

Parameters

lastOrientation	The last IMU orientation, should only be set by this function
shakeHistory	A list of shake values to see when the Swadge settles
isShook	true if the Swadge is shaking, false if it is not

Returns

true if the shake state changed (no shake to shake or vice versa), false if it did not