uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
uint8_t FoundEndpoints = 0;
memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return MIDI_ENUMERROR_InvalidConfigDescriptor;
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return MIDI_ENUMERROR_NoStreamingInterfaceFound;
}
while (FoundEndpoints != (MIDI_FOUND_DATAPIPE_IN | MIDI_FOUND_DATAPIPE_OUT))
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
return MIDI_ENUMERROR_EndpointsNotFound;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
Pipe_ConfigurePipe(MIDIInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
MIDIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
MIDIInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
FoundEndpoints |= MIDI_FOUND_DATAPIPE_IN;
}
else
{
Pipe_ConfigurePipe(MIDIInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
MIDIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
MIDIInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
FoundEndpoints |= MIDI_FOUND_DATAPIPE_OUT;
}
}
MIDIInterfaceInfo->State.IsActive = true;
return MIDI_ENUMERROR_NoError;
}
static uint8_t DCOMP_RNDIS_Host_NextRNDISInterfaceEndpoint(void* const CurrentDescriptor)
{
USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
if (Header->Type == DTYPE_Endpoint)
{
USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
uint8_t EndpointType = (Endpoint->Attributes & EP_TYPE_MASK);
if (((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT)) &&
!(Pipe_IsEndpointBound(Endpoint->EndpointAddress)))
{
return DESCRIPTOR_SEARCH_Found;
}
}
else if (Header->Type == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DCOMP_RNDIS_Host_NextRNDISDataInterface(void* const CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Interface_t);
if ((CurrentInterface->Class == RNDIS_DATA_CLASS) &&
(CurrentInterface->SubClass == RNDIS_DATA_SUBCLASS) &&
(CurrentInterface->Protocol == RNDIS_DATA_PROTOCOL))
{
return DESCRIPTOR_SEARCH_Found;
}
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DCOMP_HID_Host_NextHIDInterfaceEndpoint(void* const CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
{
USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Endpoint_t);
if (!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress)))
return DESCRIPTOR_SEARCH_Found;
}
else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DComp_CDC_Host_NextCDCControlInterface(void* const CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Interface_t);
if ((CurrentInterface->Class == CDC_CONTROL_CLASS) &&
(CurrentInterface->SubClass == CDC_CONTROL_SUBCLASS) &&
(CurrentInterface->Protocol == CDC_CONTROL_PROTOCOL))
{
return DESCRIPTOR_SEARCH_Found;
}
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DComp_MIDI_Host_NextMIDIStreamingInterface(void* const CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Interface_t);
if ((CurrentInterface->Class == MIDI_STREAMING_CLASS) &&
(CurrentInterface->SubClass == MIDI_STREAMING_SUBCLASS) &&
(CurrentInterface->Protocol == MIDI_STREAMING_PROTOCOL))
{
return DESCRIPTOR_SEARCH_Found;
}
}
return DESCRIPTOR_SEARCH_NotFound;
}
uint8_t DComp_SI_Host_NextSIInterface(void* CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Interface_t);
if ((CurrentInterface->Class == STILL_IMAGE_CLASS) &&
(CurrentInterface->SubClass == STILL_IMAGE_SUBCLASS) &&
(CurrentInterface->Protocol == STILL_IMAGE_PROTOCOL))
{
return DESCRIPTOR_SEARCH_Found;
}
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DComp_MIDI_Host_NextMIDIStreamingDataEndpoint(void* const CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
{
USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Endpoint_t);
uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
if ((EndpointType == EP_TYPE_BULK) && !(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress)))
return DESCRIPTOR_SEARCH_Found;
}
else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
* configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration
* descriptor processing if an incompatible descriptor configuration is found.
*
* This comparator searches for the next Endpoint descriptor inside the current interface descriptor,
* aborting the search if another interface descriptor is found before the required endpoint.
*
* \return A value from the DSEARCH_Return_ErrorCodes_t enum
*/
uint8_t DComp_NextHIDInterfaceDataEndpoint(void* CurrentDescriptor)
{
USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
/* Determine the type of the current descriptor */
if (Header->Type == DTYPE_Endpoint)
{
/* Indicate that the descriptor being searched for has been found */
return DESCRIPTOR_SEARCH_Found;
}
else if (Header->Type == DTYPE_Interface)
{
/* Indicate that the search has failed prematurely and should be aborted */
return DESCRIPTOR_SEARCH_Fail;
}
/* Current descriptor does not match what this comparator is looking for */
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DComp_CDC_Host_NextCDCInterfaceEndpoint(void* const CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
{
USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Endpoint_t);
uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
if ((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT))
{
return DESCRIPTOR_SEARCH_Found;
}
}
else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
uint8_t DComp_SI_Host_NextSIInterfaceEndpoint(void* CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
{
USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Endpoint_t);
uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
if (((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT)) &&
(!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress))))
{
return DESCRIPTOR_SEARCH_Found;
}
}
else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint and HID descriptor.
*
* \return An error code from the KeyboardHostWithParser_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t* ConfigDescriptorData;
uint16_t ConfigDescriptorSize;
/* Get Configuration Descriptor size from the device */
if (USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
return ControlError;
/* Ensure that the Configuration Descriptor isn't too large */
if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)
return DescriptorTooLarge;
/* Allocate enough memory for the entire config descriptor */
ConfigDescriptorData = alloca(ConfigDescriptorSize);
/* Retrieve the entire configuration descriptor into the allocated buffer */
USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData);
/* Validate returned data - ensure first entry is a configuration header descriptor */
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return InvalidConfigDataReturned;
/* Get the keyboard interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextKeyboardInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoHIDInterfaceFound;
}
/* Get the keyboard interface's HID descriptor */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextHID) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoHIDDescriptorFound;
}
/* Save the HID report size for later use */
HIDReportSize = DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_HID_t).HIDReportLength;
/* Get the keyboard interface's data endpoint descriptor */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextInterfaceKeyboardDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoEndpointFound;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
/* Configure the keyboard data pipe */
Pipe_ConfigurePipe(KEYBOARD_DATAPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInfiniteINRequests();
/* Valid data found, return success */
return SuccessfulConfigRead;
}
uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* HIDInterface = NULL;
USB_HID_Descriptor_HID_t* HIDDescriptor = NULL;
memset(&HIDInterfaceInfo->State, 0x00, sizeof(HIDInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return HID_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
if (!(HIDInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_HID_Host_NextHIDInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (DataINEndpoint || DataOUTEndpoint)
break;
do
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_HID_Host_NextHIDInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return HID_ENUMERROR_NoCompatibleInterfaceFound;
}
HIDInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
} while (HIDInterfaceInfo->Config.HIDInterfaceProtocol &&
(HIDInterface->Protocol != HIDInterfaceInfo->Config.HIDInterfaceProtocol));
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_HID_Host_NextHIDDescriptor) != DESCRIPTOR_SEARCH_COMP_Found)
{
return HID_ENUMERROR_NoCompatibleInterfaceFound;
}
HIDDescriptor = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_HID_Descriptor_HID_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
HIDInterfaceInfo->Config.DataINPipe.Size = le16_to_cpu(DataINEndpoint->EndpointSize);
HIDInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
HIDInterfaceInfo->Config.DataINPipe.Type = EP_TYPE_INTERRUPT;
HIDInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
HIDInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
HIDInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_INTERRUPT;
if (!(Pipe_ConfigurePipeTable(&HIDInterfaceInfo->Config.DataINPipe, 1)))
return false;
if (!(Pipe_ConfigurePipeTable(&HIDInterfaceInfo->Config.DataOUTPipe, 1)))
return false;
HIDInterfaceInfo->State.InterfaceNumber = HIDInterface->InterfaceNumber;
HIDInterfaceInfo->State.HIDReportSize = LE16_TO_CPU(HIDDescriptor->HIDReportLength);
HIDInterfaceInfo->State.SupportsBootProtocol = (HIDInterface->SubClass != HID_CSCP_NonBootProtocol);
HIDInterfaceInfo->State.LargestReportSize = 8;
HIDInterfaceInfo->State.IsActive = true;
return HID_ENUMERROR_NoError;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a CDC interface descriptor containing bulk data IN and OUT endpoints, and an interrupt event endpoint.
*
* \return An error code from the \ref CDCHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Interface_t* CDCControlInterface = NULL;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Endpoint_t* NotificationEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return ControlError;
}
while (!(DataINEndpoint) || !(DataOUTEndpoint) || !(NotificationEndpoint))
{
/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
if (!(CDCControlInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCDataInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Check if we have already found the control interface's notification endpoint or not */
if (NotificationEndpoint)
{
/* Get the next CDC data interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Clear any found endpoints */
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
}
else
{
/* Get the next CDC control interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save the interface in case we need to refer back to it later */
CDCControlInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Clear any found endpoints */
NotificationEndpoint = NULL;
}
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* If the endpoint is a IN type endpoint */
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
{
/* Check if the found endpoint is a interrupt or bulk type descriptor */
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
NotificationEndpoint = EndpointData;
else
DataINEndpoint = EndpointData;
}
else
{
DataOUTEndpoint = EndpointData;
}
}
/* Configure the CDC data IN pipe */
Pipe_ConfigurePipe(CDC_DATA_IN_PIPE, EP_TYPE_BULK, DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, 1);
/* Configure the CDC data OUT pipe */
Pipe_ConfigurePipe(CDC_DATA_OUT_PIPE, EP_TYPE_BULK, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 1);
/* Configure the CDC notification pipe */
Pipe_ConfigurePipe(CDC_NOTIFICATION_PIPE, EP_TYPE_INTERRUPT, NotificationEndpoint->EndpointAddress, NotificationEndpoint->EndpointSize, 1);
Pipe_SetInterruptPeriod(NotificationEndpoint->PollingIntervalMS);
/* Valid data found, return success */
return SuccessfulConfigRead;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a MSD interface descriptor containing bulk IN and OUT data endpoints.
*
* \return An error code from the \ref MassStorageHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Interface_t* MSInterface = NULL;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return ControlError;
}
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
if (!(MSInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextMSInterfaceBulkDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Get the next Mass Storage interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextMSInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save the interface in case we need to refer back to it later */
MSInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Clear any found endpoints */
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* If the endpoint is a IN type endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
/* Configure the Mass Storage data IN pipe */
Pipe_ConfigurePipe(MASS_STORE_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
/* Configure the Mass Storage data OUT pipe */
Pipe_ConfigurePipe(MASS_STORE_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);
/* Valid data found, return success */
return SuccessfulConfigRead;
}
uint8_t Audio_Host_ConfigurePipes(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* AudioControlInterface = NULL;
USB_Descriptor_Interface_t* AudioStreamingInterface = NULL;
memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return AUDIO_ENUMERROR_InvalidConfigDescriptor;
while ((AudioInterfaceInfo->Config.DataINPipe.Address && !(DataINEndpoint)) ||
(AudioInterfaceInfo->Config.DataOUTPipe.Address && !(DataOUTEndpoint)))
{
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
}
AudioControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
}
}
AudioStreamingInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
AudioInterfaceInfo->Config.DataINPipe.Size = le16_to_cpu(DataINEndpoint->EndpointSize);
AudioInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
AudioInterfaceInfo->Config.DataINPipe.Type = EP_TYPE_ISOCHRONOUS;
AudioInterfaceInfo->Config.DataINPipe.Banks = 2;
AudioInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
AudioInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
AudioInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_ISOCHRONOUS;
AudioInterfaceInfo->Config.DataOUTPipe.Banks = 2;
if (!(Pipe_ConfigurePipeTable(&AudioInterfaceInfo->Config.DataINPipe, 1)))
return false;
if (!(Pipe_ConfigurePipeTable(&AudioInterfaceInfo->Config.DataOUTPipe, 1)))
return false;
AudioInterfaceInfo->State.ControlInterfaceNumber = AudioControlInterface->InterfaceNumber;
AudioInterfaceInfo->State.StreamingInterfaceNumber = AudioStreamingInterface->InterfaceNumber;
AudioInterfaceInfo->State.EnabledStreamingAltIndex = AudioStreamingInterface->AlternateSetting;
AudioInterfaceInfo->State.IsActive = true;
return AUDIO_ENUMERROR_NoError;
}
uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* PrinterInterface = NULL;
memset(&PRNTInterfaceInfo->State, 0x00, sizeof(PRNTInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return PRNT_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
if (!(PrinterInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_PRNT_Host_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return PRNT_ENUMERROR_NoCompatibleInterfaceFound;
}
PrinterInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
PRNTInterfaceInfo->Config.DataINPipe.Size = le16_to_cpu(DataINEndpoint->EndpointSize);
PRNTInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
PRNTInterfaceInfo->Config.DataINPipe.Type = EP_TYPE_BULK;
PRNTInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
PRNTInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
PRNTInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_BULK;
if (!(Pipe_ConfigurePipeTable(&PRNTInterfaceInfo->Config.DataINPipe, 1)))
return PRNT_ENUMERROR_PipeConfigurationFailed;
if (!(Pipe_ConfigurePipeTable(&PRNTInterfaceInfo->Config.DataOUTPipe, 1)))
return PRNT_ENUMERROR_PipeConfigurationFailed;
PRNTInterfaceInfo->State.InterfaceNumber = PrinterInterface->InterfaceNumber;
PRNTInterfaceInfo->State.AlternateSetting = PrinterInterface->AlternateSetting;
PRNTInterfaceInfo->State.IsActive = true;
return PRNT_ENUMERROR_NoError;
}
uint8_t HID_Host_ConfigurePipes(USB_ClassInfo_HID_Host_t* const HIDInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* HIDInterface = NULL;
USB_HID_Descriptor_HID_t* HIDDescriptor = NULL;
uint8_t portnum = HIDInterfaceInfo->Config.PortNumber;
memset(&HIDInterfaceInfo->State, 0x00, sizeof(HIDInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return HID_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
if (!(HIDInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_HID_Host_NextHIDInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (DataINEndpoint || DataOUTEndpoint)
break;
do
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_HID_Host_NextHIDInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return HID_ENUMERROR_NoCompatibleInterfaceFound;
}
HIDInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
} while (HIDInterfaceInfo->Config.HIDInterfaceProtocol &&
(HIDInterface->Protocol != HIDInterfaceInfo->Config.HIDInterfaceProtocol));
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_HID_Host_NextHIDDescriptor) != DESCRIPTOR_SEARCH_COMP_Found)
{
return HID_ENUMERROR_NoCompatibleInterfaceFound;
}
HIDDescriptor = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_HID_Descriptor_HID_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
{
uint16_t Size;
uint8_t Type;
uint8_t Token;
uint8_t EndpointAddress;
uint8_t InterruptPeriod;
bool DoubleBanked;
if (PipeNum == HIDInterfaceInfo->Config.DataINPipeNumber)
{
Size = le16_to_cpu(DataINEndpoint->EndpointSize);
EndpointAddress = DataINEndpoint->EndpointAddress;
Token = PIPE_TOKEN_IN;
Type = EP_TYPE_INTERRUPT;
DoubleBanked = HIDInterfaceInfo->Config.DataINPipeDoubleBank;
InterruptPeriod = DataINEndpoint->PollingIntervalMS;
HIDInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
}
else if (PipeNum == HIDInterfaceInfo->Config.DataOUTPipeNumber)
{
if (DataOUTEndpoint == NULL)
continue;
Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
EndpointAddress = DataOUTEndpoint->EndpointAddress;
Token = PIPE_TOKEN_OUT;
Type = EP_TYPE_INTERRUPT;
DoubleBanked = HIDInterfaceInfo->Config.DataOUTPipeDoubleBank;
InterruptPeriod = DataOUTEndpoint->PollingIntervalMS;
HIDInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
HIDInterfaceInfo->State.DeviceUsesOUTPipe = true;
}
else
{
continue;
}
if (!(Pipe_ConfigurePipe(portnum,PipeNum, Type, Token, EndpointAddress, Size,
DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE)))
{
return HID_ENUMERROR_PipeConfigurationFailed;
}
if (InterruptPeriod)
Pipe_SetInterruptPeriod(InterruptPeriod);
}
HIDInterfaceInfo->State.InterfaceNumber = HIDInterface->InterfaceNumber;
HIDInterfaceInfo->State.HIDReportSize = LE16_TO_CPU(HIDDescriptor->HIDReportLength);
HIDInterfaceInfo->State.SupportsBootProtocol = (HIDInterface->SubClass != HID_CSCP_NonBootProtocol);
HIDInterfaceInfo->State.LargestReportSize = 8;
HIDInterfaceInfo->State.IsActive = true;
return HID_ENUMERROR_NoError;
}
uint8_t USB_Host_GetDeviceConfigDescriptor(const uint8_t ConfigNumber,
uint16_t* const ConfigSizePtr,
void* const BufferPtr,
const uint16_t BufferSize)
{
uint8_t ErrorCode;
uint8_t ConfigHeader[sizeof(USB_Descriptor_Configuration_Header_t)];
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_GetDescriptor,
.wValue = ((DTYPE_Configuration << 8) | (ConfigNumber - 1)),
.wIndex = 0,
.wLength = sizeof(USB_Descriptor_Configuration_Header_t),
};
Pipe_SelectPipe(PIPE_CONTROLPIPE);
if ((ErrorCode = USB_Host_SendControlRequest(ConfigHeader)) != HOST_SENDCONTROL_Successful)
return ErrorCode;
*ConfigSizePtr = le16_to_cpu(DESCRIPTOR_PCAST(ConfigHeader, USB_Descriptor_Configuration_Header_t)->TotalConfigurationSize);
if (*ConfigSizePtr > BufferSize)
return HOST_GETCONFIG_BuffOverflow;
USB_ControlRequest.wLength = *ConfigSizePtr;
if ((ErrorCode = USB_Host_SendControlRequest(BufferPtr)) != HOST_SENDCONTROL_Successful)
return ErrorCode;
if (DESCRIPTOR_TYPE(BufferPtr) != DTYPE_Configuration)
return HOST_GETCONFIG_InvalidData;
return HOST_GETCONFIG_Successful;
}
#endif
void USB_GetNextDescriptorOfType(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type)
{
while (*BytesRem)
{
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)
return;
}
}
void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type,
const uint8_t BeforeType)
{
while (*BytesRem)
{
USB_GetNextDescriptor(BytesRem, CurrConfigLoc);
if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)
{
return;
}
else if (DESCRIPTOR_TYPE(*CurrConfigLoc) == BeforeType)
{
*BytesRem = 0;
return;
}
}
}
void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const uint8_t Type,
const uint8_t AfterType)
{
USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, AfterType);
if (*BytesRem)
USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, Type);
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint and HID descriptor.
*
* \return An error code from the \ref MouseHostWithParser_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Interface_t* HIDInterface = NULL;
USB_HID_Descriptor_HID_t* HIDDescriptor = NULL;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return ControlError;
}
while (!(DataINEndpoint))
{
/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
if (!(HIDInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextMouseInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Get the next HID interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextMouseInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save the interface in case we need to refer back to it later */
HIDInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Get the HID descriptor from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextHID) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save the HID descriptor for later use */
HIDDescriptor = DESCRIPTOR_PCAST(CurrConfigLocation, USB_HID_Descriptor_HID_t);
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* If the endpoint is a IN type endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
DataINEndpoint = EndpointData;
}
/* Configure the HID data IN pipe */
Pipe_ConfigurePipe(MOUSE_DATA_IN_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInterruptPeriod(DataINEndpoint->PollingIntervalMS);
/* Get the HID report size from the HID report descriptor */
HIDReportSize = HIDDescriptor->HIDReportLength;
/* Valid data found, return success */
return SuccessfulConfigRead;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a MSD interface descriptor containing bulk IN and OUT data endpoints.
*
* \return An error code from the \ref MassStorageHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
uint8_t FoundEndpoints = 0;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return ControlError;
}
/* Get the mass storage interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextMSInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoInterfaceFound;
}
/* Get the IN and OUT data endpoints for the mass storage interface */
while (FoundEndpoints != ((1 << MASS_STORE_DATA_IN_PIPE) | (1 << MASS_STORE_DATA_OUT_PIPE)))
{
/* Fetch the next bulk endpoint from the current mass storage interface */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextMSInterfaceBulkDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoEndpointFound;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* Check if the endpoint is a bulk IN or bulk OUT endpoint, set appropriate globals */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
/* Configure the data IN pipe */
Pipe_ConfigurePipe(MASS_STORE_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
PIPE_BANK_DOUBLE);
/* Set the flag indicating that the data IN pipe has been found */
FoundEndpoints |= (1 << MASS_STORE_DATA_IN_PIPE);
}
else
{
/* Configure the data OUT pipe */
Pipe_ConfigurePipe(MASS_STORE_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
PIPE_BANK_DOUBLE);
/* Set the flag indicating that the data OUT pipe has been found */
FoundEndpoints |= (1 << MASS_STORE_DATA_OUT_PIPE);
}
}
/* Valid data found, return success */
return SuccessfulConfigRead;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a BT interface descriptor containing bulk IN and OUT data endpoints.
*
* \return An error code from the \ref BluetoothHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Endpoint_t* EventsEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return DevControlError;
}
/* The Bluetooth USB transport addendum mandates that the data (not streaming voice) endpoints
be in the first interface descriptor (interface 0) */
USB_GetNextDescriptorOfType(&CurrConfigBytesRem, &CurrConfigLocation, DTYPE_Interface);
/* Ensure that an interface was found, and the end of the descriptor was not reached */
if (!(CurrConfigBytesRem))
return NoCompatibleInterfaceFound;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
/* Get the next Bluetooth interface's data endpoint descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextInterfaceBluetoothDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Data endpoints not found within the first bluetooth device interface, error out */
return NoCompatibleInterfaceFound;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* If the endpoint is a IN type endpoint */
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
{
/* Check if the found endpoint is a interrupt or bulk type descriptor */
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
EventsEndpoint = EndpointData;
else
DataINEndpoint = EndpointData;
}
else
{
DataOUTEndpoint = EndpointData;
}
}
/* Configure the Bluetooth data IN pipe */
Pipe_ConfigurePipe(BLUETOOTH_DATA_IN_PIPE, EP_TYPE_BULK, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
/* Configure the Bluetooth data OUT pipe */
Pipe_ConfigurePipe(BLUETOOTH_DATA_OUT_PIPE, EP_TYPE_BULK, PIPE_TOKEN_OUT,
DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);
/* Configure the Bluetooth events pipe */
Pipe_ConfigurePipe(BLUETOOTH_EVENTS_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EventsEndpoint->EndpointAddress, EventsEndpoint->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInterruptPeriod(EventsEndpoint->PollingIntervalMS);
/* Valid data found, return success */
return SuccessfulConfigRead;
}
uint8_t Audio_Host_ConfigurePipes(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* AudioControlInterface = NULL;
USB_Descriptor_Interface_t* AudioStreamingInterface = NULL;
memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return AUDIO_ENUMERROR_InvalidConfigDescriptor;
while ((AudioInterfaceInfo->Config.DataINPipeNumber && !(DataINEndpoint)) ||
(AudioInterfaceInfo->Config.DataOUTPipeNumber && !(DataOUTEndpoint)))
{
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
}
AudioControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
}
}
AudioStreamingInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
{
uint16_t Size;
uint8_t Type;
uint8_t Token;
uint8_t EndpointAddress;
bool DoubleBanked;
if (PipeNum == AudioInterfaceInfo->Config.DataINPipeNumber)
{
Size = le16_to_cpu(DataINEndpoint->EndpointSize);
EndpointAddress = DataINEndpoint->EndpointAddress;
Token = PIPE_TOKEN_IN;
Type = EP_TYPE_ISOCHRONOUS;
DoubleBanked = true;
AudioInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
}
else if (PipeNum == AudioInterfaceInfo->Config.DataOUTPipeNumber)
{
Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
EndpointAddress = DataOUTEndpoint->EndpointAddress;
Token = PIPE_TOKEN_OUT;
Type = EP_TYPE_ISOCHRONOUS;
DoubleBanked = true;
AudioInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
}
else
{
continue;
}
if (!(Pipe_ConfigurePipe(PipeNum, Type, Token, EndpointAddress, Size,
DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE)))
{
return AUDIO_ENUMERROR_PipeConfigurationFailed;
}
}
AudioInterfaceInfo->State.ControlInterfaceNumber = AudioControlInterface->InterfaceNumber;
AudioInterfaceInfo->State.StreamingInterfaceNumber = AudioStreamingInterface->InterfaceNumber;
AudioInterfaceInfo->State.EnabledStreamingAltIndex = AudioStreamingInterface->AlternateSetting;
AudioInterfaceInfo->State.IsActive = true;
return AUDIO_ENUMERROR_NoError;
}
uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* PrinterInterface = NULL;
memset(&PRNTInterfaceInfo->State, 0x00, sizeof(PRNTInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return PRNT_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
if (!(PrinterInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_PRNT_Host_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return PRNT_ENUMERROR_NoCompatibleInterfaceFound;
}
PrinterInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
{
uint16_t Size;
uint8_t Type;
uint8_t Token;
uint8_t EndpointAddress;
bool DoubleBanked;
if (PipeNum == PRNTInterfaceInfo->Config.DataINPipeNumber)
{
Size = le16_to_cpu(DataINEndpoint->EndpointSize);
EndpointAddress = DataINEndpoint->EndpointAddress;
Token = PIPE_TOKEN_IN;
Type = EP_TYPE_BULK;
DoubleBanked = PRNTInterfaceInfo->Config.DataINPipeDoubleBank;
PRNTInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
}
else if (PipeNum == PRNTInterfaceInfo->Config.DataOUTPipeNumber)
{
Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
EndpointAddress = DataOUTEndpoint->EndpointAddress;
Token = PIPE_TOKEN_OUT;
Type = EP_TYPE_BULK;
DoubleBanked = PRNTInterfaceInfo->Config.DataOUTPipeDoubleBank;
PRNTInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
}
else
{
continue;
}
if (!(Pipe_ConfigurePipe(PipeNum, Type, Token, EndpointAddress, Size,
DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE)))
{
return PRNT_ENUMERROR_PipeConfigurationFailed;
}
}
PRNTInterfaceInfo->State.InterfaceNumber = PrinterInterface->InterfaceNumber;
PRNTInterfaceInfo->State.AlternateSetting = PrinterInterface->AlternateSetting;
PRNTInterfaceInfo->State.IsActive = true;
return PRNT_ENUMERROR_NoError;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a Streaming Audio interface descriptor containing a valid Isochronous audio endpoint.
*
* \return An error code from the \ref AudioHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Interface_t* AudioControlInterface = NULL;
USB_Descriptor_Interface_t* AudioStreamingInterface = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return ControlError;
}
while (!(DataOUTEndpoint))
{
/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Check if we haven't found an Audio Control interface yet, or if we have run out of related Audio Streaming interfaces */
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Find a new Audio Control interface if the current one doesn't contain a compatible streaming interface */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save the interface in case we need to refer back to it later */
AudioControlInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Find the next Audio Streaming interface within that Audio Control interface */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
}
/* Save the interface in case we need to refer back to it later */
AudioStreamingInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* Save the endpoint if it is an OUT type endpoint */
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_OUT)
DataOUTEndpoint = EndpointData;
}
StreamingInterfaceIndex = AudioStreamingInterface->InterfaceNumber;
StreamingInterfaceAltSetting = AudioStreamingInterface->AlternateSetting;
StreamingEndpointAddress = DataOUTEndpoint->EndpointAddress;
/* Configure the Audio data OUT pipe */
Pipe_ConfigurePipe(AUDIO_DATA_OUT_PIPE, EP_TYPE_ISOCHRONOUS, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 2);
/* Valid data found, return success */
return SuccessfulConfigRead;
}
uint8_t SI_Host_ConfigurePipes(USB_ClassInfo_SI_Host_t* const SIInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Endpoint_t* EventsEndpoint = NULL;
USB_Descriptor_Interface_t* StillImageInterface = NULL;
memset(&SIInterfaceInfo->State, 0x00, sizeof(SIInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return SI_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint) || !(EventsEndpoint))
{
if (!(StillImageInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_SI_Host_NextSIInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_SI_Host_NextSIInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return SI_ENUMERROR_NoCompatibleInterfaceFound;
}
StillImageInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
EventsEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
{
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
EventsEndpoint = EndpointData;
else
DataINEndpoint = EndpointData;
}
else
{
DataOUTEndpoint = EndpointData;
}
}
SIInterfaceInfo->Config.DataINPipe.Size = le16_to_cpu(DataINEndpoint->EndpointSize);
SIInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
SIInterfaceInfo->Config.DataINPipe.Type = EP_TYPE_BULK;
SIInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
SIInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
SIInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_BULK;
SIInterfaceInfo->Config.EventsPipe.Size = le16_to_cpu(EventsEndpoint->EndpointSize);
SIInterfaceInfo->Config.EventsPipe.EndpointAddress = EventsEndpoint->EndpointAddress;
SIInterfaceInfo->Config.EventsPipe.Type = EP_TYPE_INTERRUPT;
if (!(Pipe_ConfigurePipeTable(&SIInterfaceInfo->Config.DataINPipe, 1)))
return SI_ENUMERROR_PipeConfigurationFailed;
if (!(Pipe_ConfigurePipeTable(&SIInterfaceInfo->Config.DataOUTPipe, 1)))
return SI_ENUMERROR_PipeConfigurationFailed;
if (!(Pipe_ConfigurePipeTable(&SIInterfaceInfo->Config.EventsPipe, 1)))
return SI_ENUMERROR_PipeConfigurationFailed;
SIInterfaceInfo->State.InterfaceNumber = StillImageInterface->InterfaceNumber;
SIInterfaceInfo->State.IsActive = true;
return SI_ENUMERROR_NoError;
}
uint8_t SI_Host_ConfigurePipes(USB_ClassInfo_SI_Host_t* const SIInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Endpoint_t* EventsEndpoint = NULL;
USB_Descriptor_Interface_t* StillImageInterface = NULL;
memset(&SIInterfaceInfo->State, 0x00, sizeof(SIInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return SI_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
if (!(StillImageInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_SI_Host_NextSIInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_SI_Host_NextSIInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return SI_ENUMERROR_NoCompatibleInterfaceFound;
}
StillImageInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
EventsEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
EventsEndpoint = EndpointData;
else
DataINEndpoint = EndpointData;
}
else
{
DataOUTEndpoint = EndpointData;
}
}
for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
{
if (PipeNum == SIInterfaceInfo->Config.DataINPipeNumber)
{
Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
SIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
SIInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
}
else if (PipeNum == SIInterfaceInfo->Config.DataOUTPipeNumber)
{
Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
SIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
SIInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
}
else if (PipeNum == SIInterfaceInfo->Config.EventsPipeNumber)
{
Pipe_ConfigurePipe(PipeNum, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EventsEndpoint->EndpointAddress, EventsEndpoint->EndpointSize,
SIInterfaceInfo->Config.EventsPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
Pipe_SetInterruptPeriod(EventsEndpoint->PollingIntervalMS);
SIInterfaceInfo->State.EventsPipeSize = EventsEndpoint->EndpointSize;
}
}
SIInterfaceInfo->State.InterfaceNumber = StillImageInterface->InterfaceNumber;
SIInterfaceInfo->State.IsActive = true;
return SI_ENUMERROR_NoError;
}
/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
* routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
* with compatible devices.
*
* This routine searches for a HID interface descriptor containing at least one Interrupt type IN endpoint.
*
* \return An error code from the \ref GenericHIDHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t ConfigDescriptorData[512];
void* CurrConfigLocation = ConfigDescriptorData;
uint16_t CurrConfigBytesRem;
USB_Descriptor_Interface_t* HIDInterface = NULL;
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
/* Retrieve the entire configuration descriptor into the allocated buffer */
switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
{
case HOST_GETCONFIG_Successful:
break;
case HOST_GETCONFIG_InvalidData:
return InvalidConfigDataReturned;
case HOST_GETCONFIG_BuffOverflow:
return DescriptorTooLarge;
default:
return ControlError;
}
while (!(DataINEndpoint) || !(DataOUTEndpoint))
{
/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
if (!(HIDInterface) ||
USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextHIDInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Not all HID devices have an OUT endpoint - if we've reached the end of the HID descriptor
* but only found the mandatory IN endpoint, it's safe to continue with the device enumeration */
if (DataINEndpoint)
break;
/* Get the next HID interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextHIDInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCompatibleInterfaceFound;
}
/* Save the interface in case we need to refer back to it later */
HIDInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
/* Clear any found endpoints */
DataOUTEndpoint = NULL;
/* Skip the remainder of the loop as we have not found an endpoint yet */
continue;
}
/* Retrieve the endpoint address from the endpoint descriptor */
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
/* If the endpoint is a IN type endpoint */
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
/* Configure the HID data IN pipe */
Pipe_ConfigurePipe(HID_DATA_IN_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInterruptPeriod(DataINEndpoint->PollingIntervalMS);
/* Check if the HID interface contained an optional OUT data endpoint */
if (DataOUTEndpoint)
{
/* Configure the HID data OUT pipe */
Pipe_ConfigurePipe(HID_DATA_OUT_PIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_OUT,
DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, PIPE_BANK_SINGLE);
}
/* Valid data found, return success */
return SuccessfulConfigRead;
}
uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Endpoint_t* NotificationEndpoint = NULL;
USB_Descriptor_Interface_t* CDCControlInterface = NULL;
memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return CDC_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint) || !(NotificationEndpoint))
{
if (!(CDCControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_CDC_Host_NextCDCInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (NotificationEndpoint)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_CDC_Host_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCompatibleInterfaceFound;
}
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
}
else
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCompatibleInterfaceFound;
}
CDCControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
NotificationEndpoint = NULL;
}
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
NotificationEndpoint = EndpointData;
else
DataINEndpoint = EndpointData;
}
else
{
DataOUTEndpoint = EndpointData;
}
}
for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
{
if (PipeNum == CDCInterfaceInfo->Config.DataINPipeNumber)
{
Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
CDCInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
CDCInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
}
else if (PipeNum == CDCInterfaceInfo->Config.DataOUTPipeNumber)
{
Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
CDCInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
CDCInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
}
else if (PipeNum == CDCInterfaceInfo->Config.NotificationPipeNumber)
{
Pipe_ConfigurePipe(PipeNum, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
NotificationEndpoint->EndpointAddress, NotificationEndpoint->EndpointSize,
CDCInterfaceInfo->Config.NotificationPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
Pipe_SetInterruptPeriod(NotificationEndpoint->PollingIntervalMS);
CDCInterfaceInfo->State.NotificationPipeSize = NotificationEndpoint->EndpointSize;
}
}
CDCInterfaceInfo->State.ControlInterfaceNumber = CDCControlInterface->InterfaceNumber;
CDCInterfaceInfo->State.ControlLineStates.HostToDevice = (CDC_CONTROL_LINE_OUT_RTS | CDC_CONTROL_LINE_OUT_DTR);
CDCInterfaceInfo->State.ControlLineStates.DeviceToHost = (CDC_CONTROL_LINE_IN_DCD | CDC_CONTROL_LINE_IN_DSR);
CDCInterfaceInfo->State.IsActive = true;
return CDC_ENUMERROR_NoError;
}
uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Endpoint_t* NotificationEndpoint = NULL;
USB_Descriptor_Interface_t* CDCControlInterface = NULL;
memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return CDC_ENUMERROR_InvalidConfigDescriptor;
while (!(DataINEndpoint) || !(DataOUTEndpoint) || !(NotificationEndpoint))
{
if (!(CDCControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_CDC_Host_NextCDCInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (NotificationEndpoint)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_CDC_Host_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCompatibleInterfaceFound;
}
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
}
else
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCompatibleInterfaceFound;
}
CDCControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
NotificationEndpoint = NULL;
}
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
{
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
NotificationEndpoint = EndpointData;
else
DataINEndpoint = EndpointData;
}
else
{
DataOUTEndpoint = EndpointData;
}
}
CDCInterfaceInfo->Config.DataINPipe.Size = le16_to_cpu(DataINEndpoint->EndpointSize);
CDCInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
CDCInterfaceInfo->Config.DataINPipe.Type = EP_TYPE_BULK;
CDCInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
CDCInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
CDCInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_BULK;
CDCInterfaceInfo->Config.NotificationPipe.Size = le16_to_cpu(NotificationEndpoint->EndpointSize);
CDCInterfaceInfo->Config.NotificationPipe.EndpointAddress = NotificationEndpoint->EndpointAddress;
CDCInterfaceInfo->Config.NotificationPipe.Type = EP_TYPE_INTERRUPT;
if (!(Pipe_ConfigurePipeTable(&CDCInterfaceInfo->Config.DataINPipe, 1)))
return false;
if (!(Pipe_ConfigurePipeTable(&CDCInterfaceInfo->Config.DataOUTPipe, 1)))
return false;
if (!(Pipe_ConfigurePipeTable(&CDCInterfaceInfo->Config.NotificationPipe, 1)))
return false;
CDCInterfaceInfo->State.ControlInterfaceNumber = CDCControlInterface->InterfaceNumber;
CDCInterfaceInfo->State.ControlLineStates.HostToDevice = (CDC_CONTROL_LINE_OUT_RTS | CDC_CONTROL_LINE_OUT_DTR);
CDCInterfaceInfo->State.ControlLineStates.DeviceToHost = (CDC_CONTROL_LINE_IN_DCD | CDC_CONTROL_LINE_IN_DSR);
CDCInterfaceInfo->State.IsActive = true;
return CDC_ENUMERROR_NoError;
}