void Pipe_ClearPipes(void)
{
for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
{
Pipe_SelectPipe(PNum);
(&AVR32_USBB.upcfg0)[PNum] = 0;
(&AVR32_USBB.upcon0clr)[PNum] = -1;
USB_Pipe_FIFOPos[PNum] = &AVR32_USBB_SLAVE[PNum * 0x10000];
Pipe_DisablePipe();
}
}
void Pipe_ClearPipes(void)
{
UPINT = 0;
for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
{
Pipe_SelectPipe(PNum);
UPIENX = 0;
UPINTX = 0;
UPCFG1X = 0;
Pipe_DisablePipe();
}
}
void Pipe_ClearPipes(void)
{
UPINT = 0;
for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
{
Pipe_ResetPipe(PNum);
Pipe_SelectPipe(PNum);
UPIENX = 0;
UPINTX = 0;
Pipe_ClearError();
Pipe_ClearErrorFlags();
Pipe_DeallocateMemory();
Pipe_DisablePipe();
}
}
bool Pipe_ConfigurePipe(const uint8_t Address,
const uint8_t Type,
const uint8_t EndpointAddress,
const uint16_t Size,
const uint8_t Banks)
{
uint8_t Number = (Address & PIPE_EPNUM_MASK);
uint8_t Token = (Address & PIPE_DIR_IN) ? PIPE_TOKEN_IN : PIPE_TOKEN_OUT;
if (Number >= PIPE_TOTAL_PIPES)
return false;
if (Type == EP_TYPE_CONTROL)
Token = PIPE_TOKEN_SETUP;
#if defined(ORDERED_EP_CONFIG)
Pipe_SelectPipe(Number);
Pipe_EnablePipe();
UPCFG1X = 0;
UPCFG0X = ((Type << EPTYPE0) | Token | ((EndpointAddress & PIPE_EPNUM_MASK) << PEPNUM0));
UPCFG1X = ((1 << ALLOC) | ((Banks > 1) ? (1 << EPBK0) : 0) | Pipe_BytesToEPSizeMask(Size));
Pipe_SetInfiniteINRequests();
return Pipe_IsConfigured();
#else
for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
{
uint8_t UPCFG0XTemp;
uint8_t UPCFG1XTemp;
uint8_t UPCFG2XTemp;
uint8_t UPIENXTemp;
Pipe_SelectPipe(PNum);
if (PNum == Number)
{
UPCFG0XTemp = ((Type << EPTYPE0) | Token | ((EndpointAddress & PIPE_EPNUM_MASK) << PEPNUM0));
UPCFG1XTemp = ((1 << ALLOC) | ((Banks > 1) ? (1 << EPBK0) : 0) | Pipe_BytesToEPSizeMask(Size));
UPCFG2XTemp = 0;
UPIENXTemp = 0;
}
else
{
UPCFG0XTemp = UPCFG0X;
UPCFG1XTemp = UPCFG1X;
UPCFG2XTemp = UPCFG2X;
UPIENXTemp = UPIENX;
}
if (!(UPCFG1XTemp & (1 << ALLOC)))
continue;
Pipe_DisablePipe();
UPCFG1X &= ~(1 << ALLOC);
Pipe_EnablePipe();
UPCFG0X = UPCFG0XTemp;
UPCFG1X = UPCFG1XTemp;
UPCFG2X = UPCFG2XTemp;
UPIENX = UPIENXTemp;
Pipe_SetInfiniteINRequests();
if (!(Pipe_IsConfigured()))
return false;
}
Pipe_SelectPipe(Number);
return true;
#endif
}
bool Pipe_ConfigurePipe(const uint8_t Address,
const uint8_t Type,
const uint8_t EndpointAddress,
const uint16_t Size,
const uint8_t Banks)
{
uint8_t Number = (Address & PIPE_EPNUM_MASK);
uint8_t Token = (Address & PIPE_DIR_IN) ? PIPE_TOKEN_IN : PIPE_TOKEN_OUT;
if (Number >= PIPE_TOTAL_PIPES)
return false;
if (Type == EP_TYPE_CONTROL)
Token = PIPE_TOKEN_SETUP;
USB_Pipe_FIFOPos[Number] = &AVR32_USBB_SLAVE[Number * PIPE_HSB_ADDRESS_SPACE_SIZE];
#if defined(ORDERED_EP_CONFIG)
Pipe_SelectPipe(Number);
Pipe_EnablePipe();
(&AVR32_USBB.upcfg0)[Number] = 0;
(&AVR32_USBB.upcfg0)[Number] = (AVR32_USBB_ALLOC_MASK |
((uint32_t)Type << AVR32_USBB_PTYPE_OFFSET) |
((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
((Banks > 1) ? AVR32_USBB_PBK_MASK : 0) |
Pipe_BytesToEPSizeMask(Size) |
((uint32_t)Number << AVR32_USBB_PEPNUM_OFFSET));
Pipe_SetInfiniteINRequests();
return Pipe_IsConfigured();
#else
for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
{
uint32_t UPCFG0Temp;
Pipe_SelectPipe(PNum);
if (PNum == Number)
{
UPCFG0Temp = (AVR32_USBB_ALLOC_MASK |
((uint32_t)Type << AVR32_USBB_PTYPE_OFFSET) |
((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
((Banks > 1) ? AVR32_USBB_PBK_MASK : 0) |
Pipe_BytesToEPSizeMask(Size) |
((EndpointAddress & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
}
else
{
UPCFG0Temp = (&AVR32_USBB.upcfg0)[PNum];
}
if (!(UPCFG0Temp & AVR32_USBB_ALLOC_MASK))
continue;
Pipe_DisablePipe();
(&AVR32_USBB.upcfg0)[PNum] &= ~AVR32_USBB_ALLOC_MASK;
Pipe_EnablePipe();
(&AVR32_USBB.upcfg0)[PNum] = UPCFG0Temp;
Pipe_SetInfiniteINRequests();
if (!(Pipe_IsConfigured()))
return false;
}
Pipe_SelectPipe(Number);
return true;
#endif
}
bool Pipe_ConfigurePipe(const uint8_t Number,
const uint8_t Type,
const uint8_t Token,
const uint8_t EndpointNumber,
const uint16_t Size,
const uint8_t Banks)
{
#if defined(ORDERED_EP_CONFIG)
Pipe_SelectPipe(Number);
Pipe_EnablePipe();
UPCFG1X = 0;
UPCFG0X = ((Type << EPTYPE0) | Token | ((EndpointNumber & PIPE_EPNUM_MASK) << PEPNUM0));
UPCFG1X = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));
Pipe_SetInfiniteINRequests();
return Pipe_IsConfigured();
#else
for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
{
uint8_t UPCFG0XTemp;
uint8_t UPCFG1XTemp;
uint8_t UPCFG2XTemp;
uint8_t UPCONXTemp;
uint8_t UPINRQXTemp;
uint8_t UPIENXTemp;
Pipe_SelectPipe(PNum);
if (PNum == Number)
{
UPCFG0XTemp = ((Type << EPTYPE0) | Token | ((EndpointNumber & PIPE_EPNUM_MASK) << PEPNUM0));
UPCFG1XTemp = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));
UPCFG2XTemp = 0;
UPCONXTemp = ((1 << PEN) | (1 << INMODE));
UPINRQXTemp = 0;
UPIENXTemp = 0;
}
else
{
UPCFG0XTemp = UPCFG0X;
UPCFG1XTemp = UPCFG1X;
UPCFG2XTemp = UPCFG2X;
UPCONXTemp = UPCONX;
UPINRQXTemp = UPINRQX;
UPIENXTemp = UPIENX;
}
Pipe_SetInfiniteINRequests();
if (!(UPCFG1XTemp & (1 << ALLOC)))
continue;
Pipe_DisablePipe();
UPCFG1X &= (1 << ALLOC);
Pipe_EnablePipe();
UPCFG0X = UPCFG0XTemp;
UPCFG1X = UPCFG1XTemp;
UPCFG2X = UPCFG2XTemp;
UPCONX = UPCONXTemp;
UPINRQX = UPINRQXTemp;
UPIENX = UPIENXTemp;
if (!(Pipe_IsConfigured()))
return false;
}
Pipe_SelectPipe(Number);
return true;
#endif
}
bool Pipe_ConfigurePipe(const uint8_t Number,
const uint8_t Type,
const uint8_t Token,
const uint8_t EndpointNumber,
const uint16_t Size,
const uint8_t Banks)
{
#if defined(ORDERED_EP_CONFIG)
Pipe_SelectPipe(Number);
Pipe_EnablePipe();
(&AVR32_USBB.upcfg0)[Number] = 0;
(&AVR32_USBB.upcfg0)[Number] = (AVR32_USBB_ALLOC_MASK |
((uint32_t)Type << AVR32_USBB_PTYPE_OFFSET) |
((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
((uint32_t)Banks << AVR32_USBB_PBK_OFFSET) |
((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
USB_PipeFIFOPos[Number] = &AVR32_USBB_SLAVE[Number * 0x10000];
Pipe_SetInfiniteINRequests();
return Pipe_IsConfigured();
#else
for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
{
uint8_t UPCFG0Temp;
Pipe_SelectPipe(PNum);
if (PNum == Number)
{
UPCFG0Temp = (AVR32_USBB_ALLOC_MASK |
((uint32_t)Type << AVR32_USBB_PTYPE_OFFSET) |
((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
((uint32_t)Banks << AVR32_USBB_PBK_OFFSET) |
((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
}
else
{
UPCFG0Temp = (&AVR32_USBB.upcfg0)[PNum]
}
if (!(UPCFG0Temp & AVR32_USBB_ALLOC_MASK))
continue;
Pipe_DisablePipe();
(&AVR32_USBB.upcfg0)[PNum] &= ~AVR32_USBB_ALLOC_MASK;
Pipe_EnablePipe();
(&AVR32_USBB.upcfg0)[PNum] = UPCFG0Temp;
Pipe_SetInfiniteINRequests();
if (!(Pipe_IsConfigured()))
return false;
}
Pipe_SelectPipe(Number);
return true;
#endif
}
/** 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 CDCHost_GetConfigDescriptorDataCodes_t enum.
*/
uint8_t ProcessConfigurationDescriptor(void)
{
uint8_t* ConfigDescriptorData;
uint16_t ConfigDescriptorSize;
uint8_t FoundEndpoints = 0;
/* 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 CDC control interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCDCInterfaceFound;
}
/* Get the IN and OUT data endpoints for the CDC interface */
while (FoundEndpoints != ((1 << CDC_NOTIFICATIONPIPE) | (1 << CDC_DATAPIPE_IN) | (1 << CDC_DATAPIPE_OUT)))
{
/* Fetch the next bulk or interrupt endpoint from the current CDC interface */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextInterfaceCDCDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Check to see if the control interface's notification pipe has been found, if so search for the data interface */
if (FoundEndpoints & (1 << CDC_NOTIFICATIONPIPE))
{
/* Get the next CDC data interface from the configuration descriptor (CDC class has two CDC interfaces) */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCDCInterfaceFound;
}
}
else
{
/* Clear the found endpoints mask, since any already processed endpoints aren't in the CDC interface we need */
FoundEndpoints = 0;
/* Disable any already configured pipes from the invalid CDC interfaces */
Pipe_SelectPipe(CDC_NOTIFICATIONPIPE);
Pipe_DisablePipe();
Pipe_SelectPipe(CDC_DATAPIPE_IN);
Pipe_DisablePipe();
Pipe_SelectPipe(CDC_DATAPIPE_OUT);
Pipe_DisablePipe();
/* Get the next CDC control interface from the configuration descriptor (CDC class has two CDC interfaces) */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCDCInterfaceFound;
}
}
/* Fetch the next bulk or interrupt endpoint from the current CDC interface */
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_NextInterfaceCDCDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoEndpointFound;
}
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
/* Check if the found endpoint is a interrupt or bulk type descriptor */
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
{
/* If the endpoint is a IN type interrupt endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
/* Configure the notification pipe */
Pipe_ConfigurePipe(CDC_NOTIFICATIONPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInfiniteINRequests();
Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
/* Set the flag indicating that the notification pipe has been found */
FoundEndpoints |= (1 << CDC_NOTIFICATIONPIPE);
}
}
else
{
/* Check if the endpoint is a bulk IN or bulk OUT endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
/* Configure the data IN pipe */
Pipe_ConfigurePipe(CDC_DATAPIPE_IN, EP_TYPE_BULK, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInfiniteINRequests();
Pipe_Unfreeze();
/* Set the flag indicating that the data IN pipe has been found */
FoundEndpoints |= (1 << CDC_DATAPIPE_IN);
}
else
{
/* Configure the data OUT pipe */
Pipe_ConfigurePipe(CDC_DATAPIPE_OUT, EP_TYPE_BULK, PIPE_TOKEN_OUT,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
Pipe_Unfreeze();
/* Set the flag indicating that the data OUT pipe has been found */
FoundEndpoints |= (1 << CDC_DATAPIPE_OUT);
}
}
}
/* Valid data found, return success */
return SuccessfulConfigRead;
}
uint8_t RNDIS_Host_ConfigurePipes(USB_ClassInfo_RNDIS_Host_t* const RNDISInterfaceInfo, uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
uint8_t FoundEndpoints = 0;
memset(&RNDISInterfaceInfo->State, 0x00, sizeof(RNDISInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return RNDIS_ENUMERROR_InvalidConfigDescriptor;
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_RNDIS_Host_NextRNDISControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return RNDIS_ENUMERROR_NoRNDISInterfaceFound;
}
RNDISInterfaceInfo->State.ControlInterfaceNumber = DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_Interface_t).InterfaceNumber;
while (FoundEndpoints != (RNDIS_FOUND_NOTIFICATION_IN | RNDIS_FOUND_DATAPIPE_IN | RNDIS_FOUND_DATAPIPE_OUT))
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_RNDIS_Host_NextRNDISInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (FoundEndpoints & RNDIS_FOUND_NOTIFICATION_IN)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_RNDIS_Host_NextRNDISDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return RNDIS_ENUMERROR_NoRNDISInterfaceFound;
}
}
else
{
FoundEndpoints = 0;
Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataINPipeNumber);
Pipe_DisablePipe();
Pipe_SelectPipe(RNDISInterfaceInfo->Config.DataOUTPipeNumber);
Pipe_DisablePipe();
Pipe_SelectPipe(RNDISInterfaceInfo->Config.NotificationPipeNumber);
Pipe_DisablePipe();
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_RNDIS_Host_NextRNDISControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return RNDIS_ENUMERROR_NoRNDISInterfaceFound;
}
}
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_RNDIS_Host_NextRNDISInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
return RNDIS_ENUMERROR_EndpointsNotFound;
}
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
{
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
Pipe_ConfigurePipe(RNDISInterfaceInfo->Config.NotificationPipeNumber, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
RNDISInterfaceInfo->Config.NotificationPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
RNDISInterfaceInfo->State.NotificationPipeSize = EndpointData->EndpointSize;
Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
FoundEndpoints |= RNDIS_FOUND_NOTIFICATION_IN;
}
}
else
{
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
Pipe_ConfigurePipe(RNDISInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
RNDISInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
RNDISInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
FoundEndpoints |= RNDIS_FOUND_DATAPIPE_IN;
}
else
{
Pipe_ConfigurePipe(RNDISInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
RNDISInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
RNDISInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
FoundEndpoints |= RNDIS_FOUND_DATAPIPE_OUT;
}
}
}
RNDISInterfaceInfo->State.IsActive = true;
return RNDIS_ENUMERROR_NoError;
}
uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
uint8_t FoundEndpoints = 0;
memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return CDC_ENUMERROR_InvalidConfigDescriptor;
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCDCInterfaceFound;
}
CDCInterfaceInfo->State.ControlInterfaceNumber = DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_Interface_t).InterfaceNumber;
while (FoundEndpoints != (CDC_FOUND_NOTIFICATION_IN | CDC_FOUND_DATAPIPE_IN | CDC_FOUND_DATAPIPE_OUT))
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_CDC_Host_NextCDCInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (FoundEndpoints & CDC_FOUND_NOTIFICATION_IN)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_CDC_Host_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCDCInterfaceFound;
}
}
else
{
FoundEndpoints = 0;
Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
Pipe_DisablePipe();
Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipeNumber);
Pipe_DisablePipe();
Pipe_SelectPipe(CDCInterfaceInfo->Config.NotificationPipeNumber);
Pipe_DisablePipe();
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_NoCDCInterfaceFound;
}
}
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DComp_CDC_Host_NextCDCInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
return CDC_ENUMERROR_EndpointsNotFound;
}
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
{
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
Pipe_ConfigurePipe(CDCInterfaceInfo->Config.NotificationPipeNumber, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
CDCInterfaceInfo->Config.NotificationPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
CDCInterfaceInfo->State.NotificationPipeSize = EndpointData->EndpointSize;
Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
FoundEndpoints |= CDC_FOUND_NOTIFICATION_IN;
}
}
else
{
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
if (Pipe_IsEndpointBound(EndpointData->EndpointAddress))
{
CDCInterfaceInfo->State.BidirectionalDataEndpoints = true;
Pipe_DisablePipe();
}
Pipe_ConfigurePipe(CDCInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
CDCInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
CDCInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
FoundEndpoints |= CDC_FOUND_DATAPIPE_IN;
}
else
{
if (Pipe_IsEndpointBound(EndpointData->EndpointAddress))
{
CDCInterfaceInfo->State.BidirectionalDataEndpoints = true;
}
else
{
Pipe_ConfigurePipe(CDCInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
EndpointData->EndpointAddress, EndpointData->EndpointSize,
CDCInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
}
CDCInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
FoundEndpoints |= CDC_FOUND_DATAPIPE_OUT;
}
}
}
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;
}
void USB_Host_ProcessNextHostState(void)
{
uint8_t ErrorCode = HOST_ENUMERROR_NoError;
uint8_t SubErrorCode = HOST_ENUMERROR_NoError;
static uint16_t WaitMSRemaining;
static uint8_t PostWaitState;
switch (USB_HostState)
{
case HOST_STATE_WaitForDevice:
if (WaitMSRemaining)
{
if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
{
USB_HostState = PostWaitState;
ErrorCode = HOST_ENUMERROR_WaitStage;
break;
}
if (!(--WaitMSRemaining))
USB_HostState = PostWaitState;
}
break;
case HOST_STATE_Powered:
WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
USB_HostState = HOST_STATE_Powered_WaitForDeviceSettle;
break;
case HOST_STATE_Powered_WaitForDeviceSettle:
if (WaitMSRemaining--)
{
_delay_ms(1);
break;
}
else
{
USB_Host_VBUS_Manual_Off();
USB_OTGPAD_On();
USB_Host_VBUS_Auto_Enable();
USB_Host_VBUS_Auto_On();
USB_HostState = HOST_STATE_Powered_WaitForConnect;
}
break;
case HOST_STATE_Powered_WaitForConnect:
if (USB_INT_HasOccurred(USB_INT_DCONNI))
{
USB_INT_Clear(USB_INT_DCONNI);
USB_INT_Clear(USB_INT_DDISCI);
USB_INT_Clear(USB_INT_VBERRI);
USB_INT_Enable(USB_INT_VBERRI);
USB_Host_ResumeBus();
Pipe_ClearPipes();
HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Powered_DoReset);
}
break;
case HOST_STATE_Powered_DoReset:
USB_Host_ResetDevice();
HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered_ConfigPipe);
break;
case HOST_STATE_Powered_ConfigPipe:
Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE);
if (!(Pipe_IsConfigured()))
{
ErrorCode = HOST_ENUMERROR_PipeConfigError;
SubErrorCode = 0;
break;
}
USB_HostState = HOST_STATE_Default;
break;
case HOST_STATE_Default:
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_GetDescriptor,
.wValue = (DTYPE_Device << 8),
.wIndex = 0,
.wLength = 8,
};
uint8_t DataBuffer[8];
if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)
{
ErrorCode = HOST_ENUMERROR_ControlError;
break;
}
USB_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, Endpoint0Size)];
USB_Host_ResetDevice();
HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Default_PostReset);
break;
case HOST_STATE_Default_PostReset:
Pipe_DisablePipe();
Pipe_DeallocateMemory();
Pipe_ResetPipe(PIPE_CONTROLPIPE);
Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
PIPE_TOKEN_SETUP, ENDPOINT_CONTROLEP,
USB_ControlPipeSize, PIPE_BANK_SINGLE);
if (!(Pipe_IsConfigured()))
{
ErrorCode = HOST_ENUMERROR_PipeConfigError;
SubErrorCode = 0;
break;
}
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
.bRequest = REQ_SetAddress,
.wValue = USB_HOST_DEVICEADDRESS,
.wIndex = 0,
.wLength = 0,
};
if ((SubErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
{
ErrorCode = HOST_ENUMERROR_ControlError;
break;
}
HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Default_PostAddressSet);
break;
case HOST_STATE_Default_PostAddressSet:
USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);
EVENT_USB_Host_DeviceEnumerationComplete();
USB_HostState = HOST_STATE_Addressed;
break;
}
if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState != HOST_STATE_Unattached))
{
EVENT_USB_Host_DeviceEnumerationFailed(ErrorCode, SubErrorCode);
USB_Host_VBUS_Auto_Off();
EVENT_USB_Host_DeviceUnattached();
USB_ResetInterface();
}
}
uint8_t USB_Host_WaitMS(uint8_t MS)
{
bool BusSuspended = USB_Host_IsBusSuspended();
uint8_t ErrorCode = HOST_WAITERROR_Successful;
USB_Host_ResumeBus();
while (MS)
{
if (USB_INT_HasOccurred(USB_INT_HSOFI))
{
USB_INT_Clear(USB_INT_HSOFI);
MS--;
}
if ((USB_HostState == HOST_STATE_Unattached) || (USB_CurrentMode == USB_MODE_DEVICE))
{
ErrorCode = HOST_WAITERROR_DeviceDisconnect;
break;
}
if (Pipe_IsError() == true)
{
Pipe_ClearError();
ErrorCode = HOST_WAITERROR_PipeError;
break;
}
if (Pipe_IsStalled() == true)
{
Pipe_ClearStall();
ErrorCode = HOST_WAITERROR_SetupStalled;
break;
}
}
if (BusSuspended)
USB_Host_SuspendBus();
return ErrorCode;
}
static void USB_Host_ResetDevice(void)
{
bool BusSuspended = USB_Host_IsBusSuspended();
USB_INT_Disable(USB_INT_DDISCI);
USB_Host_ResetBus();
while (!(USB_Host_IsBusResetComplete()));
USB_Host_ResumeBus();
USB_INT_Clear(USB_INT_HSOFI);
for (uint8_t MSRem = 10; MSRem != 0; MSRem--)
{
/* Workaround for powerless-pull-up devices. After a USB bus reset,
all disconnection interrupts are suppressed while a USB frame is
looked for - if it is found within 10ms, the device is still
present. */
if (USB_INT_HasOccurred(USB_INT_HSOFI))
{
USB_INT_Clear(USB_INT_HSOFI);
USB_INT_Clear(USB_INT_DDISCI);
break;
}
_delay_ms(1);
}
if (BusSuspended)
USB_Host_SuspendBus();
USB_INT_Enable(USB_INT_DDISCI);
}
/** 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;
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 CDC control interface from the configuration descriptor */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCDCInterfaceFound;
}
/* Get the IN and OUT data and IN notification endpoints for the CDC interface */
while (FoundEndpoints != ((1 << CDC_NOTIFICATIONPIPE) | (1 << CDC_DATAPIPE_IN) | (1 << CDC_DATAPIPE_OUT)))
{
/* Fetch the next bulk or interrupt endpoint from the current CDC interface */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCDataInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Check to see if the control interface's notification pipe has been found, if so search for the data interface */
if (FoundEndpoints & (1 << CDC_NOTIFICATIONPIPE))
{
/* Get the next CDC data interface from the configuration descriptor (CDC class has two CDC interfaces) */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCDCInterfaceFound;
}
}
else
{
/* Clear the found endpoints mask, since any already processed endpoints aren't in the CDC interface we need */
FoundEndpoints = 0;
/* Disable any already configured pipes from the invalid CDC interfaces */
Pipe_SelectPipe(CDC_NOTIFICATIONPIPE);
Pipe_DisablePipe();
Pipe_SelectPipe(CDC_DATAPIPE_IN);
Pipe_DisablePipe();
Pipe_SelectPipe(CDC_DATAPIPE_OUT);
Pipe_DisablePipe();
/* Get the next CDC control interface from the configuration descriptor (CDC class has two CDC interfaces) */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
/* Descriptor not found, error out */
return NoCDCInterfaceFound;
}
}
/* Fetch the next bulk or interrupt endpoint from the current CDC interface */
if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
DComp_NextCDCDataInterfaceEndpoint) != 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 found endpoint is a interrupt or bulk type descriptor */
if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
{
/* If the endpoint is a IN type interrupt endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
/* Configure the notification pipe */
Pipe_ConfigurePipe(CDC_NOTIFICATIONPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
/* Set the flag indicating that the notification pipe has been found */
FoundEndpoints |= (1 << CDC_NOTIFICATIONPIPE);
}
}
else
{
/* Check if the endpoint is a bulk IN or bulk OUT endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
{
/* Configure the data IN pipe */
Pipe_ConfigurePipe(CDC_DATAPIPE_IN, EP_TYPE_BULK, PIPE_TOKEN_IN,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
/* Set the flag indicating that the data IN pipe has been found */
FoundEndpoints |= (1 << CDC_DATAPIPE_IN);
}
else
{
/* Configure the data OUT pipe */
Pipe_ConfigurePipe(CDC_DATAPIPE_OUT, EP_TYPE_BULK, PIPE_TOKEN_OUT,
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
/* Set the flag indicating that the data OUT pipe has been found */
FoundEndpoints |= (1 << CDC_DATAPIPE_OUT);
}
}
}
/* Valid data found, return success */
return SuccessfulConfigRead;
}
