unsigned char st_suspend(void){
//State Transition is occuring
if (timerCountDownActivated == POWER_BUTTON_OFF) {
if (timerExpired())
{
powerButtonPressed(RELEASED);
timerCountDownActivated = NOT_ACTIVATED;
if (getActivityInactiveTimeInS() > POWEROFF_THRESOLD_SEC) {
return BEFOREPOWEROFF;
}
else
{
setHeartBeat(OFF);
return BOOTING;
}
}
else{
return SUSPEND;
}
}
//Activty detected OR NON-Activity for too long
if (activityDetected() || getActivityInactiveTimeInS() > POWEROFF_THRESOLD_SEC) {
powerButtonPressed(PRESSED);
timerCountDownActivated = POWER_BUTTON_OFF;
setTimerIn100ms(POWER_BUTTON_PRESSED);
}
return SUSPEND;
}
unsigned char st_powerOff(void){
//State Transition is occuring
if (timerCountDownActivated == POWER_BUTTON_ON) {
if (timerExpired())
{
powerButtonPressed(RELEASED);
if (isPowerLED_ON()) {
timerCountDownActivated = NOT_ACTIVATED;
setTimerIn100ms(ZERO);
setHeartBeat(OFF);
return BOOTING;
}
}
//May hangs here
return POWEROFF;
}
//Press the button for POWER_BUTTON_PRESSED time and switch state
if (activityDetected()) {
powerSupplyON(ON);
powerButtonPressed(PRESSED);
timerCountDownActivated = POWER_BUTTON_ON;
setTimerIn100ms(POWER_BUTTON_PRESSED);
}
return POWEROFF;
}
void initStateMachine()
{
activityDetected();
/* configure PIT module in chain mode */
/* PIT clock source is bus clock,24MHz */
/* PIT channel 0 load value = (600000-1) */
uint32_t u32LoadValue0 = (BUS_CLOCK / 1000) * STEP_TIME_MS - 1; /* 25ms */
sPITConfig.u32LoadValue = u32LoadValue0;
sPITConfig.bFreeze = FALSE;
sPITConfig.bModuleDis = FALSE; /*!< enable PIT module */
sPITConfig.bInterruptEn = TRUE;
sPITConfig.bChainMode = FALSE;
sPITConfig.bTimerEn = TRUE;
PIT_Init(PIT_CHANNEL1, &sPITConfig);
PIT_SetCallback(PIT_CHANNEL1, controlStateMachine);
}