__interrupt void USCI_A3_ISR(void)
{
switch(__even_in_range(UCA3IV,4))
{
case 0:break; // Vector 0 - no interrupt
case 2:break; // Vector 2 - RXIFG
case 4: // Vector 4 - TXIFG
if ( TxCount == 0 )
{
UCA3IFG = 0;
TxBusy = 0;
/* start the countdown to disable SMCLK */
DisableSmClkCounter = 0;
EnableRtcPrescaleInterruptUser(RTC_TIMER_USER_DEBUG_UART);
}
else
{
/* send a character */
UCA3TXBUF = TxBuffer[ReadIndex];
IncrementReadIndex();
TxCount--;
}
break;
default: break;
}
}
/* Handle the message from the host that starts a vibration event */
void SetVibrateModeHandler(tHostMsg* pMsg)
{
// overlay a structure pointer on the data section
tSetVibrateModePayload* pMsgData;
pMsgData = (tSetVibrateModePayload*) pMsg->pPayload;
// set it active or cancel it
VibeEventActive = pMsgData->Enable;
// save the parameters from the message
motorOn = pMsgData->Enable;
tWordByteUnion temp;
temp.byte0 = pMsgData->OnDurationLsb;
temp.byte1 = pMsgData->OnDurationMsb;
timeOn = temp.word / RTC_TIMER_MS_PER_TICK;
temp.byte0 = pMsgData->OffDurationLsb;
temp.byte1 = pMsgData->OffDurationMsb;
timeOff = temp.word / RTC_TIMER_MS_PER_TICK;
cycleCount = pMsgData->NumberOfCycles;
// Start or stop the RTC PS timer based on whether the motor is being turned
// on or off
if ( VibeEventActive )
{
EnableRtcPrescaleInterruptUser(RTC_TIMER_VIBRATION);
EnableVibratorPwm();
}
else
{
DisableRtcPrescaleInterruptUser(RTC_TIMER_VIBRATION);
DisableVibratorPwm();
}
// Use a separate timer that counts Rtc_Prescale_Timer_Static messages to
// get the time for the vibe motor.
if(VibeEventActive)
{
VibeEventTimerCount = 0;
timeStart = 0;
}
// the next event is to turn
nextActionTime = timeStart + timeOn;
// Set/clear the port bit that controls the motor
SetVibeMotorState(motorOn);
}
