VOID UsbHandler(VOID)
{
//Check if the setup interrupt is pending.
//We need to check it before other interrupt requests,
//to work around that the Setup Int has lower prio then Input Endp0
if (USBIFG & SETUPIFG)
SetupPacketInterruptHandler();
else if (USBPWRCTL & VBONIFG)
PWRVBUSonHandler();
else if (USBPWRCTL & VBOFFIFG)
PWRVBUSoffHandler();
else if (USBIEPIFG & BIT0) // IEPIFG0 flag = BIT0
IEP0InterruptHandler();
else if (USBIFG & RSTRIFG)
USB_reset();
else if (USBIFG & SUSRIFG)
USB_suspend();
else if (USBIFG & RESRIFG)
USB_resume();
}
__interrupt VOID iUsbInterruptHandler(VOID)
{
BYTE bWakeUp = FALSE;
//Check if the setup interrupt is pending.
//We need to check it before other interrupts,
//to work around that the Setup Int has lower priority then Input Endpoint 0
if (USBIFG & SETUPIFG)
{
bWakeUp = SetupPacketInterruptHandler();
USBIFG &= ~SETUPIFG; // clear the interrupt bit
}
switch (__even_in_range(USBVECINT & 0x3f, USBVECINT_OUTPUT_ENDPOINT7))
{
case USBVECINT_NONE:
break;
case USBVECINT_PWR_DROP:
__no_operation();
break;
case USBVECINT_PLL_LOCK:
break;
case USBVECINT_PLL_SIGNAL:
break;
case USBVECINT_PLL_RANGE:
if (wUsbEventMask & kUSB_clockFaultEvent)
{
bWakeUp = USB_handleClockEvent();
}
break;
case USBVECINT_PWR_VBUSOn:
PWRVBUSonHandler();
if (wUsbEventMask & kUSB_VbusOnEvent)
{
bWakeUp = USB_handleVbusOnEvent();
}
break;
case USBVECINT_PWR_VBUSOff:
PWRVBUSoffHandler();
if (wUsbEventMask & kUSB_VbusOffEvent)
{
bWakeUp = USB_handleVbusOffEvent();
}
break;
case USBVECINT_USB_TIMESTAMP:
break;
case USBVECINT_INPUT_ENDPOINT0:
IEP0InterruptHandler();
break;
case USBVECINT_OUTPUT_ENDPOINT0:
OEP0InterruptHandler();
break;
case USBVECINT_RSTR:
USB_reset();
if (wUsbEventMask & kUSB_UsbResetEvent)
{
bWakeUp = USB_handleResetEvent();
}
break;
case USBVECINT_SUSR:
USB_suspend();
if (wUsbEventMask & kUSB_UsbSuspendEvent)
{
bWakeUp = USB_handleSuspendEvent();
}
break;
case USBVECINT_RESR:
USB_resume();
if (wUsbEventMask & kUSB_UsbResumeEvent)
{
bWakeUp = USB_handleResumeEvent();
}
//-- after resume we will wake up! Independ what event handler says.
bWakeUp = TRUE;
break;
case USBVECINT_SETUP_PACKET_RECEIVED:
// NAK both IEP and OEP enpoints
tEndPoint0DescriptorBlock.bIEPBCNT = EPBCNT_NAK;
tEndPoint0DescriptorBlock.bOEPBCNT = EPBCNT_NAK;
SetupPacketInterruptHandler();
break;
case USBVECINT_STPOW_PACKET_RECEIVED:
break;
case USBVECINT_INPUT_ENDPOINT1:
//send saved bytes from buffer...
bWakeUp = HidToHostFromBuffer(HID0_INTFNUM);
break;
case USBVECINT_INPUT_ENDPOINT2:
break;
case USBVECINT_INPUT_ENDPOINT3:
break;
case USBVECINT_INPUT_ENDPOINT4:
break;
case USBVECINT_INPUT_ENDPOINT5:
break;
case USBVECINT_INPUT_ENDPOINT6:
break;
case USBVECINT_INPUT_ENDPOINT7:
break;
case USBVECINT_OUTPUT_ENDPOINT1:
//call callback function if no receive operation is underway
if (!HidIsReceiveInProgress(HID0_INTFNUM))
{
if (wUsbEventMask & kUSB_dataReceivedEvent)
{
bWakeUp = USBHID_handleDataReceived(HID0_INTFNUM);
}
}
else
{
//complete receive opereation - copy data to user buffer
bWakeUp = HidToBufferFromHost(HID0_INTFNUM);
}
break;
case USBVECINT_OUTPUT_ENDPOINT2:
break;
case USBVECINT_OUTPUT_ENDPOINT3:
break;
case USBVECINT_OUTPUT_ENDPOINT4:
break;
case USBVECINT_OUTPUT_ENDPOINT5:
break;
case USBVECINT_OUTPUT_ENDPOINT6:
break;
case USBVECINT_OUTPUT_ENDPOINT7:
break;
default:
break;
}
if (bWakeUp)
{
__bic_SR_register_on_exit(LPM3_bits); // Exit LPM0-3
__no_operation(); // Required for debugger
}
}
