Klagarge/SummerSchool2-Controller
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Rémi Heredero
2023-08-22 09:22:00 +02:00
commit 2fcfcb12cd
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129
306-controller_interface.X/board/button/buttonsm.c Normal file
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#include "buttonsm.h"
/*
* this is the init method of the ButtonSM class
*/
void ButtonSM_init(ButtonSM* me, Button* button)
{
me->state = ST_BSMINIT;
me->button = button;
me->actualState = ST_BSMINIT;
me->observer = NULL;
me->observerCB = NULL;
}
/*
* this is the state machine method of the ButtonSM class
*/
bool ButtonSM_processEvent(Event* ev)
{
ButtonSM* me = (ButtonSM*)ev->target;
bool processed = false;
BSMState oldState = me->state;
switch (me->state)
{
case ST_BSMINIT:
if (Event_getId(ev) == evBSMInit)
{
me->state = ST_BSMWAIT;
}
break;
case ST_BSMWAIT:
if (Event_getId(ev) == evBSMPollTM)
{
me->state = ST_BSMPOLL;
}
break;
case ST_BSMPOLL:
if (Event_getId(ev) == evBSMDefault)
{
if (Button_read(me->button)==HIGH)
{
me->state = ST_BSMPRESSED;
}
else
{
me->state = ST_BSMRELEASED;
}
}
break;
case ST_BSMPRESSED:
if (Event_getId(ev) == evBSMDefault)
{
me->state = ST_BSMWAIT;
}
break;
case ST_BSMRELEASED:
if (Event_getId(ev) == evBSMDefault)
{
me->state = ST_BSMWAIT;
}
break;
}
if (oldState != me->state)
{
processed = true;
switch (me->state)
{
case ST_BSMINIT:
break;
case ST_BSMWAIT:
POST(me, &ButtonSM_processEvent, evBSMPollTM,POLLTM,0);
break;
case ST_BSMPOLL:
POST(me, &ButtonSM_processEvent, evBSMDefault,0,0);
break;
case ST_BSMPRESSED:
POST(me, &ButtonSM_processEvent, evBSMDefault,0,0);
if (me->actualState != ST_BSMPRESSED)
{
if (me->observerCB != NULL)
{
me->observerCB(me->observer,Button_getId(me->button),true);
me->actualState = ST_BSMPRESSED;
}
}
break;
case ST_BSMRELEASED:
POST(me, &ButtonSM_processEvent, evBSMDefault,0,0);
if (me->actualState != ST_BSMRELEASED)
{
if (me->observerCB != NULL)
{
me->observerCB(me->observer,Button_getId(me->button),false);
me->actualState = ST_BSMRELEASED;
}
}
break;
}
}
return processed;
}
/*
* this is the start method for the
* state machine of the ButtonSM class
*/
void ButtonSM_startBehaviour(ButtonSM* me)
{
POST(me, &ButtonSM_processEvent, evBSMInit,0,0);
me->actualState = Button_read(me->button)==HIGH?ST_BSMPRESSED:ST_BSMRELEASED;
}
/*
* this is the method to set the object and the
* call back method of the ButtonSM class
* this method will be called whenever the
* button changes its state
* as parameters to the callback method will be passed
* the object address, the button id and its state
* if the call back method does not belong to a class,
* then the object address must be set to NULL
*/
void ButtonSM_setObserver(ButtonSM* me, void* observer, buttonObserverCBT observerCB)
{
me->observer = observer;
me->observerCB = observerCB;
}