AIROC™ BTSDK v4.9 - Documentation | ||||
Data Structures | |
struct | ButtonData |
Button run time data. More... | |
Typedefs | |
typedef struct ButtonData | ButtonData |
Button run time data. | |
Functions | |
void | btn_wakeupDisable (void) |
This file defines the button interface provided by the 20732 core. More... | |
void | btn_wakeupEnable (void) |
Enable wakeup from all buttons. Also clear any pending events. | |
UINT16 | btn_getCurrentState (void) |
Return the current button state as a bit mapped value. More... | |
UINT16 | btn_flush (void) |
Flush any queued button activity in FW or HW and returns the current state of the buttons. More... | |
BOOL32 | btn_eventsPending (void) |
Returns whether there are any pending unprocessed button events. More... | |
void | btn_registerForInterrupt (void(*userfn)(void *), void *userdata) |
Register for notification of changes. More... | |
void | btn_init (void) |
Initialize the button driver. | |
void | btn_processEvent (KeyEvent *event) |
Process the provided button (keyscan) event. | |
BOOL32 btn_eventsPending | ( | void | ) |
Returns whether there are any pending unprocessed button events.
UINT16 btn_flush | ( | void | ) |
Flush any queued button activity in FW or HW and returns the current state of the buttons.
Interpretation of the return value is the same as getCurrentState().
UINT16 btn_getCurrentState | ( | void | ) |
Return the current button state as a bit mapped value.
0 for a button indicates that the button is not pressed, 1 indicates the button is pressed.
void btn_registerForInterrupt | ( | void(*)(void *) | userfn, |
void * | userdata | ||
) |
Register for notification of changes.
Once registered, you CAN NOT UNREGISTER; registration is meant to be a startup activity
userfn | points to the function to call when the interrupt comes and matches one of the masks (if you pass a method, it must be static). The function does not need to clear the interrupt status; this will be done by KeyscanDriver::lhlInterrupt(). The function will be called ONCE per interrupt. |
userdata | will be passed back to userfn as-is; it can be used to carry the "this", for example |
void btn_wakeupDisable | ( | void | ) |
This file defines the button interface provided by the 20732 core.
Buttons are implamented as keys on the 20732. A scan matrix of 1 row, n cols is created and scanned by the key scan hardware. The hardware reports the state of the buttons as keys. This information is translated by the button interface into a byte representing various buttons.Disable wakeup from all buttons. Clear all pending events.