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qmk_firmware/LUFA/Drivers/USB/LowLevel/DevChapter9.c

321 lines
8.1 KiB

/*
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_DEVICE)
#define INCLUDE_FROM_DEVCHAPTER9_C
#include "DevChapter9.h"
uint8_t USB_ConfigurationNumber;
bool USB_RemoteWakeupEnabled;
bool USB_CurrentlySelfPowered;
void USB_Device_ProcessControlPacket(void)
{
bool RequestHandled = false;
uint8_t* RequestHeader = (uint8_t*)&USB_ControlRequest;
for (uint8_t RequestHeaderByte = 0; RequestHeaderByte < sizeof(USB_Request_Header_t); RequestHeaderByte++)
*(RequestHeader++) = Endpoint_Read_Byte();
uint8_t bmRequestType = USB_ControlRequest.bmRequestType;
switch (USB_ControlRequest.bRequest)
{
case REQ_GetStatus:
if ((bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE)) ||
(bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_ENDPOINT)))
{
USB_Device_GetStatus();
RequestHandled = true;
}
break;
case REQ_ClearFeature:
case REQ_SetFeature:
if ((bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE)) ||
(bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_ENDPOINT)))
{
USB_Device_ClearSetFeature();
RequestHandled = true;
}
break;
case REQ_SetAddress:
if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE))
{
USB_Device_SetAddress();
RequestHandled = true;
}
break;
case REQ_GetDescriptor:
if ((bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE)) ||
(bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_INTERFACE)))
{
USB_Device_GetDescriptor();
RequestHandled = true;
}
break;
case REQ_GetConfiguration:
if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE))
{
USB_Device_GetConfiguration();
RequestHandled = true;
}
break;
case REQ_SetConfiguration:
if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE))
{
USB_Device_SetConfiguration();
RequestHandled = true;
}
break;
}
if (!(RequestHandled))
EVENT_USB_UnhandledControlPacket();
if (Endpoint_IsSETUPReceived())
{
Endpoint_StallTransaction();
Endpoint_ClearSETUP();
}
}
static void USB_Device_SetAddress(void)
{
Endpoint_ClearSETUP();
Endpoint_ClearIN();
while (!(Endpoint_IsINReady()));
UDADDR = ((1 << ADDEN) | ((uint8_t)USB_ControlRequest.wValue & 0x7F));
return;
}
static void USB_Device_SetConfiguration(void)
{
bool AlreadyConfigured = (USB_ConfigurationNumber != 0);
#if defined(USE_SINGLE_DEVICE_CONFIGURATION)
if ((uint8_t)USB_ControlRequest.wValue > 1)
#else
USB_Descriptor_Device_t* DevDescriptorPtr;
if ((CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DevDescriptorPtr) == NO_DESCRIPTOR) ||
#if defined(USE_RAM_DESCRIPTORS)
((uint8_t)USB_ControlRequest.wValue > DevDescriptorPtr->NumberOfConfigurations))
#elif defined (USE_EEPROM_DESCRIPTORS)
((uint8_t)USB_ControlRequest.wValue > eeprom_read_byte(&DevDescriptorPtr->NumberOfConfigurations)))
#else
((uint8_t)USB_ControlRequest.wValue > pgm_read_byte(&DevDescriptorPtr->NumberOfConfigurations)))
#endif
#endif
{
return;
}
Endpoint_ClearSETUP();
USB_ConfigurationNumber = (uint8_t)USB_ControlRequest.wValue;
Endpoint_ClearIN();
if (!(AlreadyConfigured) && USB_ConfigurationNumber)
EVENT_USB_DeviceEnumerationComplete();
EVENT_USB_ConfigurationChanged();
}
void USB_Device_GetConfiguration(void)
{
Endpoint_ClearSETUP();
Endpoint_Write_Byte(USB_ConfigurationNumber);
Endpoint_ClearIN();
while (!(Endpoint_IsOUTReceived()));
Endpoint_ClearOUT();
}
static void USB_Device_GetDescriptor(void)
{
void* DescriptorPointer;
uint16_t DescriptorSize;
if ((DescriptorSize = CALLBACK_USB_GetDescriptor(USB_ControlRequest.wValue,
USB_ControlRequest.wIndex, &DescriptorPointer)) == NO_DESCRIPTOR)
{
return;
}
Endpoint_ClearSETUP();
#if defined(USE_RAM_DESCRIPTORS)
Endpoint_Write_Control_Stream_LE(DescriptorPointer, DescriptorSize);
#else
bool SendZLP;
if (USB_ControlRequest.wLength > DescriptorSize)
USB_ControlRequest.wLength = DescriptorSize;
while (USB_ControlRequest.wLength)
{
while (!(Endpoint_IsINReady()))
{
if (Endpoint_IsOUTReceived())
{
Endpoint_ClearOUT();
return;
}
}
while (USB_ControlRequest.wLength && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
{
#if defined (USE_EEPROM_DESCRIPTORS)
Endpoint_Write_Byte(eeprom_read_byte(DescriptorPointer++));
#else
Endpoint_Write_Byte(pgm_read_byte(DescriptorPointer++));
#endif
USB_ControlRequest.wLength--;
}
SendZLP = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
Endpoint_ClearIN();
}
if (SendZLP)
{
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
while (!(Endpoint_IsOUTReceived()));
#endif
Endpoint_ClearOUT();
}
static void USB_Device_GetStatus(void)
{
uint8_t CurrentStatus = 0;
switch (USB_ControlRequest.bmRequestType)
{
case (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE):
if (USB_CurrentlySelfPowered)
CurrentStatus |= FEATURE_SELFPOWERED_ENABLED;
if (USB_RemoteWakeupEnabled)
CurrentStatus |= FEATURE_REMOTE_WAKEUP_ENABLED;
break;
#if !defined(CONTROL_ONLY_DEVICE)
case (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_ENDPOINT):
Endpoint_SelectEndpoint((uint8_t)USB_ControlRequest.wIndex);
CurrentStatus = Endpoint_IsStalled();
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
break;
#endif
}
Endpoint_ClearSETUP();
Endpoint_Write_Word_LE(CurrentStatus);
Endpoint_ClearIN();
while (!(Endpoint_IsOUTReceived()));
Endpoint_ClearOUT();
}
static void USB_Device_ClearSetFeature(void)
{
switch (USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT)
{
case REQREC_DEVICE:
if ((uint8_t)USB_ControlRequest.wValue == FEATURE_REMOTE_WAKEUP)
USB_RemoteWakeupEnabled = (USB_ControlRequest.bRequest == REQ_SetFeature);
else
return;
break;
#if !defined(CONTROL_ONLY_DEVICE)
case REQREC_ENDPOINT:
if ((uint8_t)USB_ControlRequest.wValue == FEATURE_ENDPOINT_HALT)
{
uint8_t EndpointIndex = ((uint8_t)USB_ControlRequest.wIndex & ENDPOINT_EPNUM_MASK);
if (EndpointIndex == ENDPOINT_CONTROLEP)
return;
Endpoint_SelectEndpoint(EndpointIndex);
if (Endpoint_IsEnabled())
{
if (USB_ControlRequest.bRequest == REQ_ClearFeature)
{
Endpoint_ClearStall();
Endpoint_ResetFIFO(EndpointIndex);
Endpoint_ResetDataToggle();
}
else
{
Endpoint_StallTransaction();
}
}
}
break;
#endif
}
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
Endpoint_ClearSETUP();
Endpoint_ClearIN();
}
#endif