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added debounce timer to button sensor

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OBS removed sensor changed notification when button released!
This commit is contained in:
fros4943 2006-10-05 11:51:51 +00:00
parent f3e5126a8c
commit 87219929b7
1 changed files with 10 additions and 5 deletions
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11
platform/cooja/dev/button-sensor.c
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* $Id: button-sensor.c,v 1.1 2006/08/21 12:11:19 fros4943 Exp $ * $Id: button-sensor.c,v 1.2 2006/10/05 11:51:51 fros4943 Exp $
*/ */
#include "lib/sensors.h" #include "lib/sensors.h"
@ -35,6 +35,7 @@
const struct simInterface button_interface; const struct simInterface button_interface;
const struct sensors_sensor button_sensor; const struct sensors_sensor button_sensor;
static struct timer debouncetimer;
// COOJA variables // COOJA variables
char simButtonChanged; char simButtonChanged;
@ -46,6 +47,7 @@ static void
init(void) init(void)
{ {
simButtonIsActive = 1; simButtonIsActive = 1;
timer_set(&debouncetimer, 0);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static int static int
@ -75,7 +77,7 @@ active(void)
static unsigned int static unsigned int
value(int type) value(int type)
{ {
return simButtonIsDown; return simButtonIsDown || !timer_expired(&debouncetimer);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static int static int
@ -94,10 +96,13 @@ static void
doInterfaceActionsBeforeTick(void) doInterfaceActionsBeforeTick(void)
{ {
// Check if button value has changed // Check if button value has changed
if (simButtonChanged && simButtonIsActive) { if (simButtonChanged && simButtonIsActive && simButtonIsDown) {
if(timer_expired(&debouncetimer)) {
timer_set(&debouncetimer, CLOCK_SECOND / 4);
sensors_changed(&button_sensor); sensors_changed(&button_sensor);
simButtonChanged = 0; simButtonChanged = 0;
} }
}
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void