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