Internal: Event Utilities

Functions
void	wiiuse_pressed_buttons (struct wiimote_t *wm, byte *msg)
	Find what buttons are pressed. More...
void	handle_wm_accel (struct wiimote_t *wm, byte *msg)
	Handle accel data in a wiimote message. More...
int	state_changed (struct wiimote_t *wm)
	Determine if the current state differs significantly from the previous. More...
void	handshake_expansion (struct wiimote_t *wm, byte *data, uint16_t len)
	Handle the handshake data from the expansion device. More...
void	disable_expansion (struct wiimote_t *wm)
	Disable the expansion device if it was enabled. More...
void	propagate_event (struct wiimote_t *wm, byte event, byte *msg)
	Analyze the event that occurred on a wiimote. More...
void	idle_cycle (struct wiimote_t *wm)
	Called on a cycle where no significant change occurs. More...
void	clear_dirty_reads (struct wiimote_t *wm)
	Clear out all old 'dirty' read requests. More...

Detailed Description

Function Documentation

clear_dirty_reads()

void clear_dirty_reads

(

struct wiimote_t *

wm

)

Clear out all old 'dirty' read requests.

Parameters

wm	Pointer to a wiimote_t structure.

disable_expansion()

void disable_expansion

(

struct wiimote_t *

wm

)

Disable the expansion device if it was enabled.

Parameters

wm	A pointer to a wiimote_t structure.
data	The data read in from the device.
len	The length of the data block, in bytes.

If the data is NULL then this function will try to start a handshake with the expansion.

handle_wm_accel()

void handle_wm_accel	(	struct wiimote_t *	wm,
		byte *	msg
	)

Handle accel data in a wiimote message.

Parameters

wm	Pointer to a wiimote_t structure.
msg	The message specified in the event packet.

handshake_expansion()

void handshake_expansion	(	struct wiimote_t *	wm,
		byte *	data,
		uint16_t	len
	)

Handle the handshake data from the expansion device.

Parameters

wm	A pointer to a wiimote_t structure.
data	The data read in from the device.
len	The length of the data block, in bytes.

Tries to determine what kind of expansion was attached and invoke the correct handshake function.

If the data is NULL then this function will try to start a handshake with the expansion.

idle_cycle()

void idle_cycle

(

struct wiimote_t *

wm

)

Called on a cycle where no significant change occurs.

Parameters

wm	Pointer to a wiimote_t structure.

propagate_event()

void propagate_event	(	struct wiimote_t *	wm,
		byte	event,
		byte *	msg
	)

Analyze the event that occurred on a wiimote.

Parameters

wm	Pointer to a wiimote_t structure.
event	The event that occurred.
msg	The message specified in the event packet.

Pass the event to the registered event callback.

state_changed()

int state_changed

(

struct wiimote_t *

wm

)

Determine if the current state differs significantly from the previous.

Parameters

wm	A pointer to a wiimote_t structure.

Returns

1 if a significant change occurred, 0 if not.

wiiuse_pressed_buttons()

void wiiuse_pressed_buttons	(	struct wiimote_t *	wm,
		byte *	msg
	)

Find what buttons are pressed.

Parameters

wm	Pointer to a wiimote_t structure.
msg	The message specified in the event packet.