static void SideShow_GetApplicationOrder(SideShow_PacketHeader_t* PacketHeader)
{
uint8_t TotalApplications = 0;
Endpoint_ClearOUT();
for (uint8_t App = 0; App < MAX_APPLICATIONS; App++)
{
if (InstalledApplications[App].InUse)
TotalApplications++;
}
PacketHeader->Length = sizeof(SideShow_PacketHeader_t) +
sizeof(uint32_t) + (TotalApplications * sizeof(GUID_t));
Endpoint_SelectEndpoint(SIDESHOW_IN_EPNUM);
Endpoint_Write_Stream_LE(PacketHeader, sizeof(SideShow_PacketHeader_t));
Endpoint_Write_DWord_LE(TotalApplications);
for (uint8_t App = 0; App < MAX_APPLICATIONS; App++)
{
if (InstalledApplications[App].InUse)
Endpoint_Write_Stream_LE(&InstalledApplications[App].ApplicationID, sizeof(GUID_t));
}
Endpoint_ClearIN();
}
/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
* the device from the USB host before passing along unhandled control requests to the library for processing
* internally.
*/
void EVENT_USB_Device_ControlRequest(void)
{
uint8_t TMCRequestStatus = TMC_STATUS_SUCCESS;
/* Process TMC specific control requests */
switch (USB_ControlRequest.bRequest)
{
case Req_InitiateAbortBulkOut:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
{
/* Check that no split transaction is already in progress and the data transfer tag is valid */
if (RequestInProgress != 0)
{
TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;
}
else if (USB_ControlRequest.wValue != CurrentTransferTag)
{
TMCRequestStatus = TMC_STATUS_TRANSFER_NOT_IN_PROGRESS;
}
else
{
/* Indicate that all in-progress/pending data OUT requests should be aborted */
IsTMCBulkOUTReset = true;
/* Save the split request for later checking when a new request is received */
RequestInProgress = Req_InitiateAbortBulkOut;
}
Endpoint_ClearSETUP();
/* Write the request response byte */
Endpoint_Write_Byte(TMCRequestStatus);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case Req_CheckAbortBulkOutStatus:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
{
/* Check that an ABORT BULK OUT transaction has been requested and that the request has completed */
if (RequestInProgress != Req_InitiateAbortBulkOut)
TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
else if (IsTMCBulkOUTReset)
TMCRequestStatus = TMC_STATUS_PENDING;
else
RequestInProgress = 0;
Endpoint_ClearSETUP();
/* Write the request response bytes */
Endpoint_Write_Byte(TMCRequestStatus);
Endpoint_Write_Word_LE(0);
Endpoint_Write_DWord_LE(LastTransferLength);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case Req_InitiateAbortBulkIn:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
{
/* Check that no split transaction is already in progress and the data transfer tag is valid */
if (RequestInProgress != 0)
{
TMCRequestStatus = TMC_STATUS_SPLIT_IN_PROGRESS;
}
else if (USB_ControlRequest.wValue != CurrentTransferTag)
{
TMCRequestStatus = TMC_STATUS_TRANSFER_NOT_IN_PROGRESS;
}
else
{
/* Indicate that all in-progress/pending data IN requests should be aborted */
IsTMCBulkINReset = true;
/* Save the split request for later checking when a new request is received */
RequestInProgress = Req_InitiateAbortBulkIn;
}
Endpoint_ClearSETUP();
/* Write the request response bytes */
Endpoint_Write_Byte(TMCRequestStatus);
Endpoint_Write_Byte(CurrentTransferTag);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case Req_CheckAbortBulkInStatus:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
{
/* Check that an ABORT BULK IN transaction has been requested and that the request has completed */
if (RequestInProgress != Req_InitiateAbortBulkIn)
TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
else if (IsTMCBulkINReset)
TMCRequestStatus = TMC_STATUS_PENDING;
else
RequestInProgress = 0;
Endpoint_ClearSETUP();
/* Write the request response bytes */
Endpoint_Write_Byte(TMCRequestStatus);
Endpoint_Write_Word_LE(0);
Endpoint_Write_DWord_LE(LastTransferLength);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case Req_InitiateClear:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
/* Check that no split transaction is already in progress */
if (RequestInProgress != 0)
{
Endpoint_Write_Byte(TMC_STATUS_SPLIT_IN_PROGRESS);
}
else
{
/* Indicate that all in-progress/pending data IN and OUT requests should be aborted */
IsTMCBulkINReset = true;
IsTMCBulkOUTReset = true;
/* Save the split request for later checking when a new request is received */
RequestInProgress = Req_InitiateClear;
}
Endpoint_ClearSETUP();
/* Write the request response byte */
Endpoint_Write_Byte(TMCRequestStatus);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case Req_CheckClearStatus:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
/* Check that a CLEAR transaction has been requested and that the request has completed */
if (RequestInProgress != Req_InitiateClear)
TMCRequestStatus = TMC_STATUS_SPLIT_NOT_IN_PROGRESS;
else if (IsTMCBulkINReset || IsTMCBulkOUTReset)
TMCRequestStatus = TMC_STATUS_PENDING;
else
RequestInProgress = 0;
Endpoint_ClearSETUP();
/* Write the request response bytes */
Endpoint_Write_Byte(TMCRequestStatus);
Endpoint_Write_Byte(0);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
break;
case Req_GetCapabilities:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Write the device capabilities to the control endpoint */
Endpoint_Write_Control_Stream_LE(&Capabilities, sizeof(TMC_Capabilities_t));
Endpoint_ClearOUT();
}
break;
}
}
