/*
* USB_IRQHandler() is the first level handler for the USB peripheral interrupt.
*/
void USB_IRQHandler( void )
{
uint32_t status;
bool servedVbusInterrupt = false;
INT_Disable();
#if ( USB_PWRSAVE_MODE )
if ( USBD_poweredDown )
{
/* Switch USBC clock from 32kHz to a 48MHz clock to be able to */
/* read USB peripheral registers. */
/* If we woke up from EM2, HFCLK is now HFRCO. */
/* Restore clock oscillators.*/
#if defined( CMU_OSCENCMD_USHFRCOEN )
if ( ( CMU->STATUS & CMU_STATUS_USHFRCOENS ) == 0 )/*Wakeup from EM2 ?*/
{
CMU->OSCENCMD = ( cmuStatus
& ( CMU_STATUS_AUXHFRCOENS | CMU_STATUS_HFXOENS ) )
| CMU_OSCENCMD_USHFRCOEN;
}
#else
if ( ( CMU->STATUS & CMU_STATUS_HFXOENS ) == 0 ) /* Wakeup from EM2 ? */
{
CMU->OSCENCMD = cmuStatus
& ( CMU_STATUS_AUXHFRCOENS | CMU_STATUS_HFXOENS );
}
#endif
/* Select correct USBC clock.*/
#if defined( CMU_OSCENCMD_USHFRCOEN )
CMU->CMD = CMU_CMD_USBCCLKSEL_USHFRCO;
while ( ( CMU->STATUS & CMU_STATUS_USBCUSHFRCOSEL ) == 0 ){}
#else
CMU->CMD = CMU_CMD_USBCCLKSEL_HFCLKNODIV;
while ( ( CMU->STATUS & CMU_STATUS_USBCHFCLKSEL ) == 0 ){}
#endif
}
#endif /* if ( USB_PWRSAVE_MODE ) */
if ( USB->IF && ( USB->CTRL & USB_CTRL_VREGOSEN ) )
{
if ( USB->IF & USB_IF_VREGOSH )
{
USB->IFC = USB_IFC_VREGOSH;
if ( USB->STATUS & USB_STATUS_VREGOS )
{
servedVbusInterrupt = true;
DEBUG_USB_INT_LO_PUTS( "\nVboN" );
#if ( USB_PWRSAVE_MODE )
if ( UsbPowerUp() )
{
USBDHAL_EnableUsbResetAndSuspendInt();
}
USBD_SetUsbState( USBD_STATE_POWERED );
#endif
}
}
if ( USB->IF & USB_IF_VREGOSL )
{
USB->IFC = USB_IFC_VREGOSL;
if ( ( USB->STATUS & USB_STATUS_VREGOS ) == 0 )
{
servedVbusInterrupt = true;
DEBUG_USB_INT_LO_PUTS( "\nVboF" );
#if ( USB_PWRSAVE_MODE )
#if ( USB_PWRSAVE_MODE & USB_PWRSAVE_MODE_ONVBUSOFF )
if ( !USBD_poweredDown )
{
USB->GINTMSK = 0;
USB->GINTSTS = 0xFFFFFFFF;
}
UsbPowerDown();
#endif
USBD_SetUsbState( USBD_STATE_NONE );
#endif
}
}
}
status = USBHAL_GetCoreInts();
if ( status == 0 )
{
INT_Enable();
if ( !servedVbusInterrupt )
{
DEBUG_USB_INT_LO_PUTS( "\nSinT" );
}
return;
}
HANDLE_INT( USB_GINTSTS_RESETDET )
HANDLE_INT( USB_GINTSTS_WKUPINT )
HANDLE_INT( USB_GINTSTS_USBSUSP )
HANDLE_INT( USB_GINTSTS_SOF )
HANDLE_INT( USB_GINTSTS_ENUMDONE )
HANDLE_INT( USB_GINTSTS_USBRST )
HANDLE_INT( USB_GINTSTS_IEPINT )
HANDLE_INT( USB_GINTSTS_OEPINT )
INT_Enable();
if ( status != 0 )
{
DEBUG_USB_INT_LO_PUTS( "\nUinT" );
}
}
/*
* USB_IRQHandler() is the first level handler for the USB peripheral interrupt.
*/
void USB_IRQHandler( void )
{
uint32_t status;
bool servedVbusInterrupt = false;
INT_Disable();
#if ( USB_PWRSAVE_MODE )
if ( USBD_poweredDown )
{
/* Switch USBC clock from 32kHz to HFCLK to be able to read USB */
/* peripheral registers. */
/* If we woke up from EM2, HFCLK is now HFRCO. */
CMU_OscillatorEnable( cmuOsc_HFXO, true, false); /* Prepare HFXO. */
CMU->CMD = CMU_CMD_USBCCLKSEL_HFCLKNODIV;
while ( !( CMU->STATUS & CMU_STATUS_USBCHFCLKSEL ) ) { }
}
#endif /* if ( USB_PWRSAVE_MODE ) */
if ( USB->IF && ( USB->CTRL & USB_CTRL_VREGOSEN ) )
{
if ( USB->IF & USB_IF_VREGOSH )
{
USB->IFC = USB_IFC_VREGOSH;
if ( USB->STATUS & USB_STATUS_VREGOS )
{
servedVbusInterrupt = true;
DEBUG_USB_INT_LO_PUTS( "\nVboN" );
#if ( USB_PWRSAVE_MODE & USB_PWRSAVE_MODE_ONVBUSOFF )
if ( UsbPowerUp() )
#endif
{
USBDHAL_EnableUsbResetInt();
}
USBD_SetUsbState( USBD_STATE_POWERED );
}
}
if ( USB->IF & USB_IF_VREGOSL )
{
USB->IFC = USB_IFC_VREGOSL;
if ( !( USB->STATUS & USB_STATUS_VREGOS ) )
{
servedVbusInterrupt = true;
DEBUG_USB_INT_LO_PUTS( "\nVboF" );
USB->GINTMSK = 0;
USB->GINTSTS = 0xFFFFFFFF;
#if ( USB_PWRSAVE_MODE & USB_PWRSAVE_MODE_ONVBUSOFF )
UsbPowerDown();
#endif
USBD_SetUsbState( USBD_STATE_NONE );
}
}
}
status = USBHAL_GetCoreInts();
if ( status == 0 )
{
INT_Enable();
if ( !servedVbusInterrupt )
{
DEBUG_USB_INT_LO_PUTS( "\nSinT" );
}
return;
}
HANDLE_INT( USB_GINTSTS_RESETDET )
HANDLE_INT( USB_GINTSTS_WKUPINT )
HANDLE_INT( USB_GINTSTS_USBSUSP )
HANDLE_INT( USB_GINTSTS_SOF )
HANDLE_INT( USB_GINTSTS_ENUMDONE )
HANDLE_INT( USB_GINTSTS_USBRST )
HANDLE_INT( USB_GINTSTS_IEPINT )
HANDLE_INT( USB_GINTSTS_OEPINT )
INT_Enable();
if ( status != 0 )
{
DEBUG_USB_INT_LO_PUTS( "\nUinT" );
}
}
