/***************************************************************************//**
* @brief Handle Endpoint 2 OUT transfer interrupt
* @note This function takes no parameters, but it uses the EP2OUT status
* variables stored in @ref myUsbDevice.ep2out.
******************************************************************************/
void handleUsbOut2Int(void)
{
uint8_t count;
USB_Status_TypeDef status;
bool xferComplete = false;
USB_SetIndex(2);
if (USB_EpnOutGetSentStall())
{
USB_EpnOutClearSentStall();
}
else if (USB_EpnGetOutPacketReady())
{
count = USB_EpOutGetCount();
// If USBD_Read() has not been called, return an error
if (myUsbDevice.ep2out.state != D_EP_RECEIVING)
{
myUsbDevice.ep2out.misc.bits.outPacketPending = true;
status = USB_STATUS_EP_ERROR;
}
// Check for overrun of user buffer
else if (myUsbDevice.ep2out.remaining < count)
{
myUsbDevice.ep2out.state = D_EP_IDLE;
myUsbDevice.ep2out.misc.bits.outPacketPending = true;
status = USB_STATUS_EP_RX_BUFFER_OVERRUN;
}
else
{
USB_ReadFIFO(2, count, myUsbDevice.ep2out.buf);
myUsbDevice.ep2out.misc.bits.outPacketPending = false;
myUsbDevice.ep2out.remaining -= count;
myUsbDevice.ep2out.buf += count;
if ((myUsbDevice.ep2out.remaining == 0) || (count != SLAB_USB_EP2OUT_MAX_PACKET_SIZE))
{
myUsbDevice.ep2out.state = D_EP_IDLE;
xferComplete = true;
}
status = USB_STATUS_OK;
USB_EpnClearOutPacketReady();
}
if (myUsbDevice.ep2out.misc.bits.callback == true)
{
if (xferComplete == true)
{
myUsbDevice.ep2out.misc.bits.callback = false;
}
USBD_XferCompleteCb(EP2OUT, status, count, myUsbDevice.ep2out.remaining);
}
}
}
/***************************************************************************//**
* @brief Writes data to the USB FIFO
* @param fifoNum
* USB Endpoint FIFO to write
* @param numBytes
* Number of bytes to write to the FIFO
* @param dat
* Pointer to buffer hoding data to write to the FIFO
* @param txPacket
* If TRUE, the packet will be sent immediately after loading the
* FIFO
* If FALSE, the packet will be stored in the FIFO and the
* transmission must be started at a later time
******************************************************************************/
void USB_WriteFIFO(uint8_t fifoNum, uint8_t numBytes, uint8_t *dat, bool txPacket)
{
USB_EnableWriteFIFO(fifoNum);
// Convert generic pointer to memory-specific pointer and call the
// the corresponding memory-specific function, if possible.
// The memory-specific functions are much faster than the generic functions.
#ifdef SI_GPTR
switch (((SI_GEN_PTR_t *)&dat)->gptr.memtype)
{
case SI_GPTR_MTYPE_IDATA:
USB_WriteFIFO_Idata(numBytes, dat);
break;
// For some compilers, IDATA and DATA are treated the same.
// Only call the USB_WriteFIFO_Data() if the compiler differentiates between
// DATA and IDATA.
#if (SI_GPTR_MTYPE_DATA != SI_GPTR_MTYPE_IDATA)
case SI_GPTR_MTYPE_DATA:
USB_WriteFIFO_Data(numBytes, dat);
break;
#endif
case SI_GPTR_MTYPE_XDATA:
USB_WriteFIFO_Xdata(numBytes, dat);
break;
// For some compilers, XDATA and PDATA are treated the same.
// Only call the USB_WriteFIFO_Pdata() if the compiler differentiates
// between XDATA and PDATA.
#if (SI_GPTR_MTYPE_PDATA != SI_GPTR_MTYPE_XDATA)
case SI_GPTR_MTYPE_PDATA:
USB_WriteFIFO_Pdata(numBytes, dat);
break;
#endif
case SI_GPTR_MTYPE_CODE:
USB_WriteFIFO_Code(numBytes, dat);
break;
default:
break;
}
#else
USB_WriteFIFO_Generic(numBytes, dat);
#endif // #ifdef SI_GPTR
USB_DisableWriteFIFO(fifoNum);
if ((txPacket == true) && (fifoNum > 0))
{
USB_SetIndex(fifoNum);
USB_EpnSetInPacketReady();
}
}
void USB_ActivateEp(uint8_t ep,
uint16_t packetSize,
bool inDir,
bool splitMode,
bool isoMode)
{
uint8_t CSRH_mask = 0;
uint16_t fifoSize;
USB_SetIndex(ep);
// Determine the available fifoSize for a given endpoint based on the
// splitMode setting
fifoSize = (splitMode == true) ? (16 << ep) : (32 << ep);
if (packetSize <= fifoSize)
{
CSRH_mask |= EINCSRH_DBIEN__ENABLED;
}
if (isoMode == true)
{
CSRH_mask |= EINCSRH_ISO__ENABLED;
}
if (inDir == true)
{
CSRH_mask |= EINCSRH_DIRSEL__IN;
if (splitMode == true)
{
CSRH_mask |= EINCSRH_SPLIT__ENABLED;
}
USB_WRITE_BYTE(EINCSRL, EINCSRL_CLRDT__BMASK);
USB_WRITE_BYTE(EINCSRH, CSRH_mask);
}
else // OUT
{
USB_WRITE_BYTE(EOUTCSRL, EOUTCSRL_CLRDT__BMASK);
USB_WRITE_BYTE(EOUTCSRH, CSRH_mask);
if (splitMode == false)
{
USB_WRITE_BYTE(EINCSRH, 0);
}
}
}
/***************************************************************************//**
* @brief Handle Endpoint 2 IN transfer interrupt
* @note This function takes no parameters, but it uses the EP2IN status
* variables stored in @ref myUsbDevice.ep2in.
******************************************************************************/
void handleUsbIn2Int(void)
{
uint8_t xferred;
bool callback;
USB_SetIndex(2);
if (USB_EpnInGetSentStall())
{
USB_EpnInClearSentStall();
}
else if (myUsbDevice.ep2in.state == D_EP_TRANSMITTING)
{
xferred = (myUsbDevice.ep2in.remaining > SLAB_USB_EP2IN_MAX_PACKET_SIZE)
? SLAB_USB_EP2IN_MAX_PACKET_SIZE : myUsbDevice.ep2in.remaining;
myUsbDevice.ep2in.remaining -= xferred;
myUsbDevice.ep2in.buf += xferred;
callback = myUsbDevice.ep2in.misc.bits.callback;
// Load more data
if (myUsbDevice.ep2in.remaining > 0)
{
USB_WriteFIFO(2,
(myUsbDevice.ep2in.remaining > SLAB_USB_EP2IN_MAX_PACKET_SIZE)
? SLAB_USB_EP2IN_MAX_PACKET_SIZE
: myUsbDevice.ep2in.remaining,
myUsbDevice.ep2in.buf,
true);
}
else
{
myUsbDevice.ep2in.misc.bits.callback = false;
myUsbDevice.ep2in.state = D_EP_IDLE;
}
if (callback == true)
{
USBD_XferCompleteCb(EP2IN, USB_STATUS_OK, xferred, myUsbDevice.ep2in.remaining);
}
}
}
/***************************************************************************//**
* @brief Handle Endpoint 3 OUT transfer interrupt
* @details Endpoint 3 OUT is the only OUT endpoint that supports
* isochronous transfers.
* @note This function takes no parameters, but it uses the EP3OUT status
* variables stored in @ref myUsbDevice.ep3out.
******************************************************************************/
void handleUsbOut3Int(void)
{
#if (SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_ISOC)
uint16_t nextIdx;
#if (SLAB_USB_EP3OUT_MAX_PACKET_SIZE > 255)
uint16_t count;
#else
uint8_t count;
#endif // ( SLAB_USB_EP3OUT_MAX_PACKET_SIZE > 255 )
#else
uint8_t count;
#endif // ( SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_ISOC )
USB_Status_TypeDef status;
bool xferComplete = false;
USB_SetIndex(3);
if (USB_EpnOutGetSentStall())
{
USB_EpnOutClearSentStall();
}
else if (USB_EpnGetOutPacketReady())
{
count = USB_EpOutGetCount();
// If USBD_Read() has not been called, return an error
if (myUsbDevice.ep3out.state != D_EP_RECEIVING)
{
myUsbDevice.ep3out.misc.bits.outPacketPending = true;
status = USB_STATUS_EP_ERROR;
}
#if ((SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_BULK) || (SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_INTR))
// Check for overrun of user buffer
else if (myUsbDevice.ep3out.remaining < count)
{
myUsbDevice.ep3out.state = D_EP_IDLE;
myUsbDevice.ep3out.misc.bits.outPacketPending = true;
status = USB_STATUS_EP_RX_BUFFER_OVERRUN;
}
#endif
else
{
#if ((SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_BULK) || (SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_INTR))
USB_ReadFIFO(3, count, myUsbDevice.ep3out.buf);
myUsbDevice.ep3out.remaining -= count;
myUsbDevice.ep3out.buf += count;
if ((myUsbDevice.ep3out.remaining == 0) || (count != SLAB_USB_EP3OUT_MAX_PACKET_SIZE))
{
myUsbDevice.ep3out.state = D_EP_IDLE;
xferComplete = true;
}
#elif (SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_ISOC)
nextIdx = count + myUsbDevice.ep3outIsoIdx;
// In isochronous mode, a circular buffer is used to hold the data
// If the next index into the circular buffer passes the end of the
// buffer, make two calls to USB_ReadFIFOIso()
if (nextIdx > myUsbDevice.ep3out.remaining)
{
USB_ReadFIFOIso(3, myUsbDevice.ep3out.remaining - myUsbDevice.ep3outIsoIdx, &myUsbDevice.ep3out.buf[myUsbDevice.ep3outIsoIdx]);
myUsbDevice.ep3outIsoIdx = nextIdx - myUsbDevice.ep3out.remaining;
USB_ReadFIFOIso(3, myUsbDevice.ep3outIsoIdx, myUsbDevice.ep3out.buf);
}
else
{
USB_ReadFIFOIso(3, count, &myUsbDevice.ep3out.buf[myUsbDevice.ep3outIsoIdx]);
myUsbDevice.ep3outIsoIdx = nextIdx;
}
#endif // ( ( SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_BULK ) || ( SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_INTR ) )
myUsbDevice.ep3out.misc.bits.outPacketPending = false;
status = USB_STATUS_OK;
USB_EpnClearOutPacketReady();
}
if (myUsbDevice.ep3out.misc.bits.callback == true)
{
if (xferComplete == true)
{
myUsbDevice.ep3out.misc.bits.callback = false;
}
#if ((SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_BULK) || (SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_INTR))
USBD_XferCompleteCb(EP3OUT, status, count, myUsbDevice.ep3out.remaining);
#elif (SLAB_USB_EP3OUT_TRANSFER_TYPE == USB_EPTYPE_ISOC)
// In Isochronous mode, the meaning of the USBD_XferCompleteCb parameters changes:
// xferred is the number of bytes received in the last packet
// remaining is the current index into the circular buffer
USBD_XferCompleteCb(EP3OUT, status, count, myUsbDevice.ep3outIsoIdx);
#endif
}
}
}
/***************************************************************************//**
* @brief Handle Endpoint 3 IN transfer interrupt
* @details Endpoint 3 IN is the only IN endpoint that supports isochronous
* transfers.
* @note This function takes no parameters, but it uses the EP3IN status
* variables stored in @ref myUsbDevice.ep3in.
******************************************************************************/
void handleUsbIn3Int(void)
{
#if SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_ISOC
uint16_t xferred, nextIdx;
#else
uint8_t xferred;
bool callback;
#endif
USB_SetIndex(3);
if (USB_EpnInGetSentStall())
{
USB_EpnInClearSentStall();
}
else if (myUsbDevice.ep3in.state == D_EP_TRANSMITTING)
{
#if ((SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_BULK) || (SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_INTR))
xferred = (myUsbDevice.ep3in.remaining > SLAB_USB_EP3IN_MAX_PACKET_SIZE)
? SLAB_USB_EP3IN_MAX_PACKET_SIZE : myUsbDevice.ep3in.remaining;
myUsbDevice.ep3in.remaining -= xferred;
myUsbDevice.ep3in.buf += xferred;
#endif
#if ((SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_BULK) || (SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_INTR))
callback = myUsbDevice.ep3in.misc.bits.callback;
#elif (SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_ISOC)
if (myUsbDevice.ep3in.misc.bits.callback == true)
{
// In Isochronous mode, the meaning of the USBD_XferCompleteCb parameters changes:
// xferred is ignored
// remaining is the current index into the circular buffer
// the return value is the number of bytes to transmit in the next packet
xferred = USBD_XferCompleteCb(EP3IN, USB_STATUS_OK, 0, myUsbDevice.ep3inIsoIdx);
if (xferred == 0)
{
myUsbDevice.ep3in.misc.bits.inPacketPending = true;
return;
}
}
#endif
// Load more data
#if ((SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_BULK) || (SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_INTR))
if (myUsbDevice.ep3in.remaining > 0)
{
USB_WriteFIFO(3,
(myUsbDevice.ep3in.remaining > SLAB_USB_EP3IN_MAX_PACKET_SIZE)
? SLAB_USB_EP3IN_MAX_PACKET_SIZE
: myUsbDevice.ep3in.remaining,
myUsbDevice.ep3in.buf,
true);
}
else
{
myUsbDevice.ep3in.misc.bits.callback = false;
myUsbDevice.ep3in.state = D_EP_IDLE;
}
if (callback == true)
{
USBD_XferCompleteCb(EP3IN, USB_STATUS_OK, xferred, myUsbDevice.ep3in.remaining);
}
#elif (SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_ISOC)
nextIdx = xferred + myUsbDevice.ep3inIsoIdx;
myUsbDevice.ep3in.misc.bits.inPacketPending = false;
// Check if the next index is past the end of the circular buffer.
// If so, break the write up into two calls to USB_WriteFIFOIso()
if (nextIdx > myUsbDevice.ep3in.remaining)
{
USB_WriteFIFOIso(3, myUsbDevice.ep3in.remaining - myUsbDevice.ep3inIsoIdx, &myUsbDevice.ep3in.buf[myUsbDevice.ep3inIsoIdx]);
myUsbDevice.ep3inIsoIdx = nextIdx - myUsbDevice.ep3in.remaining;
USB_WriteFIFOIso(3, myUsbDevice.ep3inIsoIdx, myUsbDevice.ep3in.buf);
}
else
{
USB_WriteFIFOIso(3, xferred, &myUsbDevice.ep3in.buf[myUsbDevice.ep3inIsoIdx]);
myUsbDevice.ep3inIsoIdx = nextIdx;
}
#endif // ( ( SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_BULK ) || ( SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_INTR ) )
}
}
/***************************************************************************//**
* @brief Processes Standard Request (Chapter 9 Command)
* @return Status of request (type @ref USB_Status_TypeDef)
* @note This function takes no parameters, but it uses the setup command
* stored in @ref myUsbDevice.setup.
******************************************************************************/
USB_Status_TypeDef USBDCH9_SetupCmd(void)
{
USB_Status_TypeDef status = USB_STATUS_OK;
switch (myUsbDevice.setup.bRequest)
{
case GET_STATUS:
status = GetStatus();
break;
case CLEAR_FEATURE:
status = ClearFeature();
break;
case SET_FEATURE:
status = SetFeature();
break;
case SET_ADDRESS:
status = SetAddress();
break;
case GET_DESCRIPTOR:
status = GetDescriptor();
break;
case GET_CONFIGURATION:
status = GetConfiguration();
break;
case SET_CONFIGURATION:
status = SetConfiguration();
break;
case GET_INTERFACE:
status = GetInterface();
break;
case SET_INTERFACE:
status = SetInterface();
break;
// case GET_MS_DESCRIPTOR:
// status = HandleMsRequest();
// break;
default:
status = USB_STATUS_REQ_ERR;
break;
}
// Reset index to 0 in case one of the above commands modified it
USB_SetIndex(0);
// If the command resulted in an error, send a procedural stall
if (status == USB_STATUS_REQ_ERR)
{
SendEp0Stall();
}
return status;
}
/***************************************************************************//**
* @brief Clears the requested feature
* @details Supports CLEAR_FEATURE for Remote Wakeup and Endpoint Halt
* @return Status of request (type @ref USB_Status_TypeDef)
* @note This function takes no parameters, but it uses the setup command
* stored in @ref myUsbDevice.setup.
******************************************************************************/
static USB_Status_TypeDef ClearFeature(void)
{
USB_Status_TypeDef retVal = USB_STATUS_REQ_ERR;
if (myUsbDevice.setup.wLength == 0)
{
switch (myUsbDevice.setup.bmRequestType.Recipient)
{
#if SLAB_USB_REMOTE_WAKEUP_ENABLED
case USB_SETUP_RECIPIENT_DEVICE:
if ((myUsbDevice.setup.wIndex == 0)
&& (myUsbDevice.setup.wValue == USB_FEATURE_DEVICE_REMOTE_WAKEUP)
&& (myUsbDevice.state >= USBD_STATE_ADDRESSED))
{
// Remote wakeup feature clear
myUsbDevice.remoteWakeupEnabled = false;
retVal = USB_STATUS_OK;
}
break;
#endif // SLAB_USB_REMOTE_WAKEUP_ENABLED
case USB_SETUP_RECIPIENT_ENDPOINT:
if (myUsbDevice.setup.wValue == USB_FEATURE_ENDPOINT_HALT)
{
// Device does not support halting endpoint 0, but do not return
// an error as this is a valid request
if (((myUsbDevice.setup.wIndex & ~USB_EP_DIR_IN) == 0)
&& (myUsbDevice.state >= USBD_STATE_ADDRESSED))
{
retVal = USB_STATUS_OK;
}
else if (((myUsbDevice.setup.wIndex & ~USB_SETUP_DIR_D2H) < SLAB_USB_NUM_EPS_USED)
&& (myUsbDevice.state == USBD_STATE_CONFIGURED))
{
retVal = USB_STATUS_OK;
USB_SetIndex((myUsbDevice.setup.wIndex & 0xFF) & ~USB_SETUP_DIR_D2H);
#if (SLAB_USB_EP1IN_USED || SLAB_USB_EP2IN_USED || SLAB_USB_EP3IN_USED)
if ((myUsbDevice.setup.wIndex & 0xFF) & USB_EP_DIR_IN)
{
USB_EpnInEndStallAndClearDataToggle();
}
#endif
#if (SLAB_USB_EP1OUT_USED || SLAB_USB_EP2OUT_USED || SLAB_USB_EP3OUT_USED)
if (((myUsbDevice.setup.wIndex & 0xFF) & USB_EP_DIR_IN) == 0)
{
USB_EpnOutEndStallAndClearDataToggle();
}
#endif
switch (myUsbDevice.setup.wIndex & 0xFF)
{
#if SLAB_USB_EP1OUT_USED
case (USB_EP_DIR_OUT | 1):
if (myUsbDevice.ep1out.state != D_EP_RECEIVING)
{
myUsbDevice.ep1out.state = D_EP_IDLE;
}
break;
#endif
#if SLAB_USB_EP2OUT_USED
case (USB_EP_DIR_OUT | 2):
if (myUsbDevice.ep2out.state != D_EP_RECEIVING)
{
myUsbDevice.ep2out.state = D_EP_IDLE;
}
break;
#endif
#if SLAB_USB_EP3OUT_USED
case (USB_EP_DIR_OUT | 3):
if (myUsbDevice.ep3out.state != D_EP_RECEIVING)
{
myUsbDevice.ep3out.state = D_EP_IDLE;
}
break;
#endif
#if SLAB_USB_EP1IN_USED
case (USB_EP_DIR_IN | 1):
if (myUsbDevice.ep1in.state != D_EP_TRANSMITTING)
{
myUsbDevice.ep1in.state = D_EP_IDLE;
}
break;
#endif
#if SLAB_USB_EP2IN_USED
case (USB_EP_DIR_IN | 2):
if (myUsbDevice.ep2in.state != D_EP_TRANSMITTING)
{
myUsbDevice.ep2in.state = D_EP_IDLE;
}
break;
#endif
#if SLAB_USB_EP3IN_USED
case (USB_EP_DIR_IN | 3):
if (myUsbDevice.ep3in.state != D_EP_TRANSMITTING)
{
myUsbDevice.ep3in.state = D_EP_IDLE;
}
break;
#endif
}
}
}
}
}
return retVal;
}
void usbIrqHandler(void)
#endif
{
uint8_t statusCommon, statusIn, statusOut, indexSave;
#if SLAB_USB_HANDLER_CB
// Callback to user before processing
USBD_EnterHandler();
#endif
// Get the interrupt sources
statusCommon = USB_GetCommonInts();
statusIn = USB_GetInInts();
statusOut = USB_GetOutInts();
#if SLAB_USB_POLLED_MODE
if ((statusCommon == 0) && (statusIn == 0) && (statusOut == 0))
{
return;
}
#endif
// Save the current index
indexSave = USB_GetIndex();
// Check Common USB Interrupts
if (USB_IsSofIntActive(statusCommon))
{
#if SLAB_USB_SOF_CB
USBD_SofCb(USB_GetSofNumber());
#endif // SLAB_USB_SOF_CB
// Check for unhandled USB packets on EP0 and set the corresponding IN or
// OUT interrupt active flag if necessary.
if (((myUsbDevice.ep0.misc.bits.outPacketPending == true) && (myUsbDevice.ep0.state == D_EP_RECEIVING)) ||
((myUsbDevice.ep0.misc.bits.inPacketPending == true) && (myUsbDevice.ep0.state == D_EP_TRANSMITTING)))
{
USB_SetEp0IntActive(statusIn);
}
// Check for unhandled USB OUT packets and set the corresponding OUT
// interrupt active flag if necessary.
#if SLAB_USB_EP1OUT_USED
if ((myUsbDevice.ep1out.misc.bits.outPacketPending == true) && (myUsbDevice.ep1out.state == D_EP_RECEIVING))
{
USB_SetOut1IntActive(statusOut);
}
#endif
#if SLAB_USB_EP2OUT_USED
if ((myUsbDevice.ep2out.misc.bits.outPacketPending == true) && (myUsbDevice.ep2out.state == D_EP_RECEIVING))
{
USB_SetOut2IntActive(statusOut);
}
#endif
#if SLAB_USB_EP3OUT_USED
if ((myUsbDevice.ep3out.misc.bits.outPacketPending == true) && (myUsbDevice.ep3out.state == D_EP_RECEIVING))
{
USB_SetOut3IntActive(statusOut);
}
#endif
#if (SLAB_USB_EP3IN_USED && (SLAB_USB_EP3IN_TRANSFER_TYPE == USB_EPTYPE_ISOC))
if ((myUsbDevice.ep3in.misc.bits.inPacketPending == true) && (myUsbDevice.ep3in.state == D_EP_TRANSMITTING))
{
USB_SetIn3IntActive(statusIn);
}
#endif
}
if (USB_IsResetIntActive(statusCommon))
{
handleUsbResetInt();
// If VBUS is not present on detection of a USB reset, enter suspend mode.
#if (SLAB_USB_PWRSAVE_MODE & USB_PWRSAVE_MODE_ONVBUSOFF)
if (USB_IsVbusOn() == false)
{
USB_SetSuspendIntActive(statusCommon);
}
#endif
}
if (USB_IsResumeIntActive(statusCommon))
{
handleUsbResumeInt();
}
if (USB_IsSuspendIntActive(statusCommon))
{
handleUsbSuspendInt();
}
#if SLAB_USB_EP3IN_USED
if (USB_IsIn3IntActive(statusIn))
{
handleUsbIn3Int();
}
#endif // EP3IN_USED
#if SLAB_USB_EP3OUT_USED
if (USB_IsOut3IntActive(statusOut))
{
handleUsbOut3Int();
}
#endif // EP3OUT_USED
#if SLAB_USB_EP2IN_USED
if (USB_IsIn2IntActive(statusIn))
{
handleUsbIn2Int();
}
#endif // EP2IN_USED
#if SLAB_USB_EP1IN_USED
if (USB_IsIn1IntActive(statusIn))
{
handleUsbIn1Int();
}
#endif // EP1IN_USED
#if SLAB_USB_EP2OUT_USED
if (USB_IsOut2IntActive(statusOut))
{
handleUsbOut2Int();
}
#endif // EP2OUT_USED
#if SLAB_USB_EP1OUT_USED
if (USB_IsOut1IntActive(statusOut))
{
handleUsbOut1Int();
}
#endif // EP1OUT_USED
// Check USB Endpoint 0 Interrupt
if (USB_IsEp0IntActive(statusIn))
{
handleUsbEp0Int();
}
// Restore index
USB_SetIndex(indexSave);
#if SLAB_USB_HANDLER_CB
// Callback to user before exiting
USBD_ExitHandler();
#endif
}
/***************************************************************************//**
* @brief Send a procedural stall on Endpoint 0
******************************************************************************/
void SendEp0Stall(void)
{
USB_SetIndex(0);
myUsbDevice.ep0.state = D_EP_STALL;
USB_Ep0SendStall();
}
/***************************************************************************//**
* @brief Handles Endpoint 0 transfer interrupt
******************************************************************************/
static void handleUsbEp0Int(void)
{
USB_SetIndex(0);
if (USB_Ep0SentStall() || USB_GetSetupEnd())
{
USB_Ep0ClearSentStall();
USB_ServicedSetupEnd();
myUsbDevice.ep0.state = D_EP_IDLE;
myUsbDevice.ep0.misc.c = 0;
}
if (USB_Ep0OutPacketReady())
{
if (myUsbDevice.ep0.misc.bits.waitForRead == true)
{
myUsbDevice.ep0.misc.bits.outPacketPending = true;
}
else if (myUsbDevice.ep0.state == D_EP_IDLE)
{
myUsbDevice.ep0String.c = USB_STRING_DESCRIPTOR_UTF16LE;
USB_ReadFIFOSetup();
// Vendor unique, Class or Standard setup commands override?
#if SLAB_USB_SETUP_CMD_CB
if (USBD_SetupCmdCb(&myUsbDevice.setup) == USB_STATUS_REQ_UNHANDLED)
{
#endif
if (myUsbDevice.setup.bmRequestType.Type == USB_SETUP_TYPE_STANDARD)
{
USBDCH9_SetupCmd();
}
else
{
SendEp0Stall();
}
#if SLAB_USB_SETUP_CMD_CB
}
else
{
// If in-packet but callback didn't setup a USBD_Read and we are expecting a data byte then
// we need to wait for the read to be setup and nack packets till USBD_Read is called.
if ((myUsbDevice.setup.bmRequestType.Direction == USB_SETUP_DIR_OUT)
&& (myUsbDevice.ep0.state != D_EP_RECEIVING)
&& (myUsbDevice.setup.wLength)
)
{
myUsbDevice.ep0.misc.bits.waitForRead = true;
}
}
#endif
}
else if (myUsbDevice.ep0.state == D_EP_RECEIVING)
{
handleUsbEp0Rx();
}
else
{
myUsbDevice.ep0.misc.bits.outPacketPending = true;
}
}
if ((myUsbDevice.ep0.state == D_EP_TRANSMITTING) && (USB_Ep0InPacketReady() == 0))
{
handleUsbEp0Tx();
}
}
int8_t USBD_UnStallEp(uint8_t epAddr)
{
bool usbIntsEnabled;
USB_SaveSfrPage();
// Verify the endpoint address is valid and not Endpoint 0.
if ((epAddr == EP0) || (epAddr >= SLAB_USB_NUM_EPS_USED))
{
SLAB_ASSERT(false);
return USB_STATUS_ILLEGAL;
}
else
{
DISABLE_USB_INTS;
// End the stall condition and set the endpoint state to idle.
switch (epAddr)
{
#if SLAB_USB_EP1IN_USED
case (EP1IN):
myUsbDevice.ep1in.state = D_EP_IDLE;
USB_SetIndex(1);
USB_EpnInEndStall();
break;
#endif
#if SLAB_USB_EP2IN_USED
case (EP2IN):
myUsbDevice.ep2in.state = D_EP_IDLE;
USB_SetIndex(2);
USB_EpnInEndStall();
break;
#endif
#if SLAB_USB_EP3IN_USED
case (EP3IN):
myUsbDevice.ep3in.state = D_EP_IDLE;
USB_SetIndex(3);
USB_EpnInEndStall();
break;
#endif
#if SLAB_USB_EP1OUT_USED
case (EP1OUT):
myUsbDevice.ep1out.state = D_EP_IDLE;
USB_SetIndex(1);
USB_EpnOutEndStall();
break;
#endif
#if SLAB_USB_EP2OUT_USED
case (EP2OUT):
myUsbDevice.ep2out.state = D_EP_IDLE;
USB_SetIndex(2);
USB_EpnOutEndStall();
break;
#endif
#if SLAB_USB_EP3OUT_USED
case (EP3OUT):
myUsbDevice.ep3out.state = D_EP_IDLE;
USB_SetIndex(3);
USB_EpnOutEndStall();
break;
#endif
}
ENABLE_USB_INTS;
USB_RestoreSfrPage();
}
return USB_STATUS_OK;
}
int8_t USBD_StallEp(uint8_t epAddr)
{
bool usbIntsEnabled;
USB_SaveSfrPage();
// Verify the endpoint address is valid and not Endpoint 0.
if ((epAddr == EP0) || (epAddr >= SLAB_USB_NUM_EPS_USED))
{
SLAB_ASSERT(false);
return USB_STATUS_ILLEGAL;
}
DISABLE_USB_INTS;
// Halt the appropriate endpoint by sending a stall and setting the endpoint
// state to Halted (D_EP_HALT).
switch (epAddr)
{
#if SLAB_USB_EP1IN_USED
case (EP1IN):
myUsbDevice.ep1in.state = D_EP_HALT;
USB_SetIndex(1);
USB_EpnInStall();
break;
#endif
#if SLAB_USB_EP2IN_USED
case (EP2IN):
myUsbDevice.ep2in.state = D_EP_HALT;
USB_SetIndex(2);
USB_EpnInStall();
break;
#endif
#if SLAB_USB_EP3IN_USED
case (EP3IN):
myUsbDevice.ep3in.state = D_EP_HALT;
USB_SetIndex(3);
USB_EpnInStall();
break;
#endif
#if SLAB_USB_EP1OUT_USED
case (EP1OUT):
myUsbDevice.ep1out.state = D_EP_HALT;
USB_SetIndex(1);
USB_EpnOutStall();
break;
#endif
#if SLAB_USB_EP2OUT_USED
case (EP2OUT):
myUsbDevice.ep2out.state = D_EP_HALT;
USB_SetIndex(2);
USB_EpnOutStall();
break;
#endif
#if SLAB_USB_EP3OUT_USED
case (EP3OUT):
myUsbDevice.ep3out.state = D_EP_HALT;
USB_SetIndex(3);
USB_EpnOutStall();
break;
#endif
}
ENABLE_USB_INTS;
USB_RestoreSfrPage();
return USB_STATUS_OK;
}
void USB_AbortOutEp(uint8_t fifoNum)
{
USB_SetIndex(fifoNum);
USB_EpnOutFlush();
USB_EpnOutFlush();
}
void USB_AbortInEp(uint8_t fifoNum)
{
USB_SetIndex(fifoNum);
USB_EpnInFlush();
USB_EpnInFlush();
}