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343 lines
11 KiB
343 lines
11 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#include "../../HighLevel/USBMode.h"
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#if defined(USB_CAN_BE_HOST)
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#define INCLUDE_FROM_CDC_CLASS_HOST_C
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#include "CDC.h"
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uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint16_t ConfigDescriptorSize,
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uint8_t* ConfigDescriptorData)
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{
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uint8_t FoundEndpoints = 0;
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memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
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if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
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return CDC_ENUMERROR_InvalidConfigDescriptor;
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if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
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DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
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{
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return CDC_ENUMERROR_NoCDCInterfaceFound;
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}
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CDCInterfaceInfo->State.ControlInterfaceNumber =
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#if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES)
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DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_Interface_t).InterfaceNumber;
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#else
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DESCRIPTOR_CAST(ConfigDescriptorData, USB_Descriptor_Interface_t).bInterfaceNumber;
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#endif
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while (FoundEndpoints != (CDC_FOUND_NOTIFICATION_IN | CDC_FOUND_DATAPIPE_IN | CDC_FOUND_DATAPIPE_OUT))
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{
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if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
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DComp_CDC_Host_NextCDCInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
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{
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if (FoundEndpoints & CDC_FOUND_NOTIFICATION_IN)
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{
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if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
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DComp_CDC_Host_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
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{
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return CDC_ENUMERROR_NoCDCInterfaceFound;
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}
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}
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else
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{
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FoundEndpoints = 0;
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Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
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Pipe_DisablePipe();
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Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipeNumber);
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Pipe_DisablePipe();
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Pipe_SelectPipe(CDCInterfaceInfo->Config.NotificationPipeNumber);
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Pipe_DisablePipe();
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if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
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DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
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{
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return CDC_ENUMERROR_NoCDCInterfaceFound;
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}
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}
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if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
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DComp_CDC_Host_NextCDCInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
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{
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return CDC_ENUMERROR_EndpointsNotFound;
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}
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}
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USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
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if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
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{
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if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
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{
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Pipe_ConfigurePipe(CDCInterfaceInfo->Config.NotificationPipeNumber, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
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EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
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CDCInterfaceInfo->State.NotificationPipeSize = EndpointData->EndpointSize;
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Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
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FoundEndpoints |= CDC_FOUND_NOTIFICATION_IN;
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}
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}
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else
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{
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if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
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{
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Pipe_ConfigurePipe(CDCInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
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EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
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CDCInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
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FoundEndpoints |= CDC_FOUND_DATAPIPE_IN;
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}
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else
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{
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Pipe_ConfigurePipe(CDCInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
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EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
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CDCInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
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FoundEndpoints |= CDC_FOUND_DATAPIPE_OUT;
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}
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}
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}
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CDCInterfaceInfo->State.IsActive = true;
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return CDC_ENUMERROR_NoError;
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}
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static uint8_t DComp_CDC_Host_NextCDCControlInterface(void* CurrentDescriptor)
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{
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if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
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{
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USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
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USB_Descriptor_Interface_t);
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if ((CurrentInterface->Class == CDC_CONTROL_CLASS) &&
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(CurrentInterface->SubClass == CDC_CONTROL_SUBCLASS) &&
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(CurrentInterface->Protocol == CDC_CONTROL_PROTOCOL))
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{
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return DESCRIPTOR_SEARCH_Found;
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}
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}
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return DESCRIPTOR_SEARCH_NotFound;
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}
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static uint8_t DComp_CDC_Host_NextCDCDataInterface(void* CurrentDescriptor)
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{
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if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
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{
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USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
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USB_Descriptor_Interface_t);
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if ((CurrentInterface->Class == CDC_DATA_CLASS) &&
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(CurrentInterface->SubClass == CDC_DATA_SUBCLASS) &&
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(CurrentInterface->Protocol == CDC_DATA_PROTOCOL))
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{
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return DESCRIPTOR_SEARCH_Found;
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}
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}
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return DESCRIPTOR_SEARCH_NotFound;
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}
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static uint8_t DComp_CDC_Host_NextCDCInterfaceEndpoint(void* CurrentDescriptor)
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{
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if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
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{
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USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
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USB_Descriptor_Endpoint_t);
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uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
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if (((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT)) &&
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!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress)))
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{
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return DESCRIPTOR_SEARCH_Found;
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}
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}
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else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
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{
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return DESCRIPTOR_SEARCH_Fail;
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}
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return DESCRIPTOR_SEARCH_NotFound;
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}
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void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)
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{
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if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
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return;
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Pipe_SelectPipe(CDCInterfaceInfo->Config.NotificationPipeNumber);
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Pipe_Unfreeze();
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if (Pipe_IsINReceived())
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{
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USB_Request_Header_t Notification;
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Pipe_Read_Stream_LE(&Notification, sizeof(Notification), NO_STREAM_CALLBACK);
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if ((Notification.bRequest == NOTIF_SerialState) &&
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(Notification.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)))
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{
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Pipe_Read_Stream_LE(&CDCInterfaceInfo->State.ControlLineStates.DeviceToHost,
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sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
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NO_STREAM_CALLBACK);
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}
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Pipe_ClearIN();
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EVENT_CDC_Host_ControLineStateChanged(CDCInterfaceInfo);
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}
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Pipe_Freeze();
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}
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uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
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.bRequest = REQ_SetLineEncoding,
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.wValue = 0,
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.wIndex = CDCInterfaceInfo->State.ControlInterfaceNumber,
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.wLength = sizeof(CDCInterfaceInfo->State.LineEncoding),
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};
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(&CDCInterfaceInfo->State.LineEncoding);
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}
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uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)
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{
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
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.bRequest = REQ_SetControlLineState,
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.wValue = CDCInterfaceInfo->State.ControlLineStates.HostToDevice,
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.wIndex = CDCInterfaceInfo->State.ControlInterfaceNumber,
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.wLength = 0,
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};
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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return USB_Host_SendControlRequest(NULL);
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}
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uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length)
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{
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if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
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return;
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uint8_t ErrorCode;
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Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipeNumber);
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Pipe_Unfreeze();
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ErrorCode = Pipe_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);
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Pipe_Freeze();
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return ErrorCode;
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}
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uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data)
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{
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if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
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return;
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uint8_t ErrorCode;
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Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipeNumber);
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Pipe_Unfreeze();
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if (!(Pipe_IsReadWriteAllowed()))
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{
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Pipe_ClearOUT();
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if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
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return ErrorCode;
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}
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Pipe_Write_Byte(Data);
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Pipe_Freeze();
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return PIPE_READYWAIT_NoError;
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}
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uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)
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{
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uint16_t BytesInPipe = 0;
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if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
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return BytesInPipe;
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Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
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Pipe_Unfreeze();
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if (Pipe_IsINReceived() && !(Pipe_BytesInPipe()))
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Pipe_ClearIN();
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BytesInPipe = Pipe_BytesInPipe();
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Pipe_Freeze();
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return BytesInPipe;
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}
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uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo)
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{
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uint8_t ReceivedByte = 0;
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if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
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return ReceivedByte;
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Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
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Pipe_Unfreeze();
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ReceivedByte = Pipe_Read_Byte();
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if (!(Pipe_BytesInPipe()))
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Pipe_ClearIN();
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Pipe_Freeze();
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return ReceivedByte;
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}
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void CDC_Host_Event_Stub(void)
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{
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}
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#endif
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