Driver / Button

Driver to access a button. More...

Functions
void	but_Init (void(*stateChangedCallback)(bool))
	Initializes the button module. More...
bool	but_GetState (void)
	Gets the current state of the user button. More...

Detailed Description

Driver to access a button.

Call but_Init() first in the initialization code. Then, call but_GetState() to read the current state of the button.

It is also possible to pass a function pointer to the but_Init() function. Then, the given function will be called automatically when the button state changes (pressed or released).

Function Documentation

but_GetState()

bool but_GetState

(

void

)

Gets the current state of the user button.

Returns

the state of the button (1=released, 0=pressed).

but_Init()

void but_Init

(

void(*)(bool)

stateChangedCallback

)

Initializes the button module.

Parameters

stateChangedCallback

function pointer to the callback function that should be called when the button state changes. If this feature is not used, NULL can be passed instead.