/****************************************************************************
NAME
powerManagerHandleVbatLow
DESCRIPTION
Called when the battery voltage is detected to be in Battery Low state
*/
static void powerManagerHandleVbatLow( void )
{
sinkState lSinkState = stateManagerGetState ();
bool batt_was_low = powerManagerIsVbatLow();
PM_DEBUG(("PM: Battery Low\n"));
if(powerManagerIsChargerConnected() || lSinkState == deviceLimbo)
{
theSink.battery_state = POWER_BATT_LEVEL0;
}
else
{
theSink.battery_state = POWER_BATT_LOW;
}
if(!batt_was_low || !powerManagerIsVbatLow())
{
/* update state indication to indicate low batt state change */
#ifndef NO_LED
LEDManagerIndicateState( lSinkState );
#endif
}
AudioSetPower(powerManagerGetLBIPM());
}
/*******************************************************************************
NAME
sinkUpgradePowerEventHandler
DESCRIPTION
Handle power events and pass relevant ones to the Upgrade library.
The upgrade library is interested in two kinds of events:
1. When the library is in the 'normal' state then low battery when
a charger is not connected triggers transition to
the 'low battery error' state.
2. When the library is in the 'low battery error' state, then connecting
a charger (or when battery level will magically change from low to ok
without connecting a charger) enables transition back to
the 'normal' state.
PARAMETERS
void
RETURNS
void
*/
void sinkUpgradePowerEventHandler(void)
{
upgrade_power_state_t power_state = upgrade_battery_ok;
if(powerManagerIsChargerConnected())
{
power_state = upgrade_charger_connected;
}
else if(powerManagerIsVbatLow() || powerManagerIsVbatCritical())
{
/* Only when charger is not connected and battery level is low notify
* the upgrade library. This is because purpose the upgrade library's
* low battery handling is to prevent draining battery to much when
* charger is not connected.
*/
power_state = upgrade_battery_low;
}
UpgradePowerManagementSetState(power_state);
}
/****************************************************************************
NAME
batteryNormal
DESCRIPTION
Called when the battery voltage is detected to be in a Normal state
*/
static void powerManagerHandleVbatNormal(uint8 level)
{
#ifndef NO_LED
bool low_batt = powerManagerIsVbatLow();
#endif
PM_DEBUG(("PM: Battery Normal %d\n", level));
MessageSend(&theSink.task, EventSysBatteryOk, 0);
/* If charger connected send a charger gas gauge message (these don't have any functional use but can be associated with LEDs/tones) */
if (powerManagerIsChargerConnected())
MessageSend(&theSink.task, (EventSysChargerGasGauge0+level), 0);
/* reset any low battery warning that may be in place */
theSink.battery_state = POWER_BATT_LEVEL0 + level;
csr2csrHandleAgBatteryRequestRes(level);
#ifndef NO_LED
/* when changing from low battery state to a normal state, refresh the led state pattern
to replace the low battery pattern should it have been shown */
if(low_batt) LEDManagerIndicateState(stateManagerGetState());
#endif
AudioSetPower(powerManagerGetLBIPM());
}
