|
|
|
/*
|
|
|
|
LUFA Library
|
|
|
|
Copyright (C) Dean Camera, 2009.
|
|
|
|
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
|
|
www.fourwalledcubicle.com
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
|
|
|
|
Permission to use, copy, modify, and distribute this software
|
|
|
|
and its documentation for any purpose and without fee is hereby
|
|
|
|
granted, provided that the above copyright notice appear in all
|
|
|
|
copies and that both that the copyright notice and this
|
|
|
|
permission notice and warranty disclaimer appear in supporting
|
|
|
|
documentation, and that the name of the author not be used in
|
|
|
|
advertising or publicity pertaining to distribution of the
|
|
|
|
software without specific, written prior permission.
|
|
|
|
|
|
|
|
The author disclaim all warranties with regard to this
|
|
|
|
software, including all implied warranties of merchantability
|
|
|
|
and fitness. In no event shall the author be liable for any
|
|
|
|
special, indirect or consequential damages or any damages
|
|
|
|
whatsoever resulting from loss of use, data or profits, whether
|
|
|
|
in an action of contract, negligence or other tortious action,
|
|
|
|
arising out of or in connection with the use or performance of
|
|
|
|
this software.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "../../HighLevel/USBMode.h"
|
|
|
|
#if defined(USB_CAN_BE_HOST)
|
|
|
|
|
|
|
|
#define INCLUDE_FROM_CDC_CLASS_HOST_C
|
|
|
|
#include "CDC.h"
|
|
|
|
|
|
|
|
static uint8_t CDC_Host_ProcessConfigDescriptor(void)
|
|
|
|
{
|
|
|
|
uint8_t* ConfigDescriptorData;
|
|
|
|
uint16_t ConfigDescriptorSize;
|
|
|
|
uint8_t FoundEndpoints = 0;
|
|
|
|
|
|
|
|
if (USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)
|
|
|
|
return ControlError;
|
|
|
|
|
|
|
|
if (ConfigDescriptorSize > 512)
|
|
|
|
return DescriptorTooLarge;
|
|
|
|
|
|
|
|
ConfigDescriptorData = alloca(ConfigDescriptorSize);
|
|
|
|
|
|
|
|
USB_GetDeviceConfigDescriptor(&ConfigDescriptorSize, ConfigDescriptorData);
|
|
|
|
|
|
|
|
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
|
|
|
|
return InvalidConfigDataReturned;
|
|
|
|
|
|
|
|
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
|
|
|
DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
|
|
|
{
|
|
|
|
return NoCDCInterfaceFound;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (FoundEndpoints != ((1 << CDC_NOTIFICATIONPIPE) | (1 << CDC_DATAPIPE_IN) | (1 << CDC_DATAPIPE_OUT)))
|
|
|
|
{
|
|
|
|
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
|
|
|
DComp_CDC_Host_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_CDC_Host_NextCDCDataInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
|
|
|
{
|
|
|
|
/* Descriptor not found, error out */
|
|
|
|
return NoCDCInterfaceFound;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
FoundEndpoints = 0;
|
|
|
|
|
|
|
|
Pipe_SelectPipe(CDC_NOTIFICATIONPIPE);
|
|
|
|
Pipe_DisablePipe();
|
|
|
|
Pipe_SelectPipe(CDC_DATAPIPE_IN);
|
|
|
|
Pipe_DisablePipe();
|
|
|
|
Pipe_SelectPipe(CDC_DATAPIPE_OUT);
|
|
|
|
Pipe_DisablePipe();
|
|
|
|
|
|
|
|
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
|
|
|
DComp_CDC_Host_NextCDCControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
|
|
|
{
|
|
|
|
return NoCDCInterfaceFound;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
|
|
|
DComp_CDC_Host_NextInterfaceCDCDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
|
|
|
|
{
|
|
|
|
return NoEndpointFound;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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(CDC_NOTIFICATIONPIPE, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
|
|
|
|
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
|
|
|
|
|
|
|
|
Pipe_SetInfiniteINRequests();
|
|
|
|
Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
|
|
|
|
|
|
|
|
FoundEndpoints |= (1 << CDC_NOTIFICATIONPIPE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
|
|
|
|
{
|
|
|
|
Pipe_ConfigurePipe(CDC_DATAPIPE_IN, EP_TYPE_BULK, PIPE_TOKEN_IN,
|
|
|
|
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
|
|
|
|
|
|
|
|
Pipe_SetInfiniteINRequests();
|
|
|
|
Pipe_Unfreeze();
|
|
|
|
|
|
|
|
FoundEndpoints |= (1 << CDC_DATAPIPE_IN);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
Pipe_ConfigurePipe(CDC_DATAPIPE_OUT, EP_TYPE_BULK, PIPE_TOKEN_OUT,
|
|
|
|
EndpointData->EndpointAddress, EndpointData->EndpointSize, PIPE_BANK_SINGLE);
|
|
|
|
|
|
|
|
Pipe_Unfreeze();
|
|
|
|
|
|
|
|
FoundEndpoints |= (1 << CDC_DATAPIPE_OUT);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return SuccessfulConfigRead;
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint8_t DComp_CDC_Host_NextCDCControlInterface(void* CurrentDescriptor)
|
|
|
|
{
|
|
|
|
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
|
|
|
|
{
|
|
|
|
/* Check the CDC descriptor class, subclass and protocol, break out if correct control interface found */
|
|
|
|
if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == CDC_CONTROL_CLASS) &&
|
|
|
|
(DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == CDC_CONTROL_SUBCLASS) &&
|
|
|
|
(DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == CDC_CONTROL_PROTOCOL))
|
|
|
|
{
|
|
|
|
return DESCRIPTOR_SEARCH_Found;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return DESCRIPTOR_SEARCH_NotFound;
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint8_t DComp_CDC_Host_NextCDCDataInterface(void* CurrentDescriptor)
|
|
|
|
{
|
|
|
|
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
|
|
|
|
{
|
|
|
|
/* Check the CDC descriptor class, subclass and protocol, break out if correct data interface found */
|
|
|
|
if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class == CDC_DATA_CLASS) &&
|
|
|
|
(DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == CDC_DATA_SUBCLASS) &&
|
|
|
|
(DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == CDC_DATA_PROTOCOL))
|
|
|
|
{
|
|
|
|
return DESCRIPTOR_SEARCH_Found;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return DESCRIPTOR_SEARCH_NotFound;
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint8_t DComp_CDC_Host_NextInterfaceCDCDataEndpoint(void* CurrentDescriptor)
|
|
|
|
{
|
|
|
|
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
|
|
|
|
{
|
|
|
|
uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor,
|
|
|
|
USB_Descriptor_Endpoint_t).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;
|
|
|
|
}
|
|
|
|
|
|
|
|
void CDC_Host_Task(void)
|
|
|
|
{
|
|
|
|
uint8_t ErrorCode;
|
|
|
|
|
|
|
|
switch (USB_HostState)
|
|
|
|
{
|
|
|
|
case HOST_STATE_Addressed:
|
|
|
|
USB_ControlRequest = (USB_Request_Header_t)
|
|
|
|
{
|
|
|
|
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
|
|
|
|
.bRequest = REQ_SetConfiguration,
|
|
|
|
.wValue = 1,
|
|
|
|
.wIndex = 0,
|
|
|
|
.wLength = 0,
|
|
|
|
};
|
|
|
|
|
|
|
|
Pipe_SelectPipe(PIPE_CONTROLPIPE);
|
|
|
|
|
|
|
|
if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
|
|
|
|
{
|
|
|
|
USB_HostState = HOST_STATE_Unattached;
|
|
|
|
}
|
|
|
|
|
|
|
|
USB_HostState = HOST_STATE_Configured;
|
|
|
|
break;
|
|
|
|
case HOST_STATE_Configured:
|
|
|
|
if ((ErrorCode = CDC_Host_ProcessConfigDescriptor()) != SuccessfulConfigRead)
|
|
|
|
{
|
|
|
|
USB_HostState = HOST_STATE_Unattached;
|
|
|
|
}
|
|
|
|
|
|
|
|
USB_HostState = HOST_STATE_Ready;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|