Moved all source to the trunk directory.
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Dean Camera
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313
LUFA/Drivers/USB/LowLevel/DevChapter9.c
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313
LUFA/Drivers/USB/LowLevel/DevChapter9.c
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/*
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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 "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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uint8_t bmRequestType = Endpoint_Read_Byte();
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uint8_t bRequest = Endpoint_Read_Byte();
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bool RequestHandled = false;
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switch (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(bmRequestType);
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RequestHandled = true;
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}
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break;
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#if !defined(NO_CLEARSET_FEATURE_REQUEST)
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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_ENDPOINT))
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{
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USB_Device_ClearSetFeature(bRequest, bmRequestType);
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RequestHandled = true;
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}
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break;
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#endif
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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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RAISE_EVENT(USB_UnhandledControlPacket, bRequest, bmRequestType);
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if (Endpoint_IsSetupReceived())
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{
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Endpoint_StallTransaction();
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Endpoint_ClearSetupReceived();
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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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uint8_t wValue_LSB = Endpoint_Read_Byte();
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Endpoint_ClearSetupReceived();
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while (!(Endpoint_IsSetupINReady()));
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Endpoint_ClearSetupIN();
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while (!(Endpoint_IsSetupINReady()));
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UDADDR = ((1 << ADDEN) | (wValue_LSB & 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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uint8_t wValue_LSB = Endpoint_Read_Byte();
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bool AlreadyConfigured = (USB_ConfigurationNumber != 0);
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#if defined(USE_SINGLE_DEVICE_CONFIGURATION)
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if (wValue_LSB > 1)
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#else
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USB_Descriptor_Device_t* DevDescriptorPtr;
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if ((USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DevDescriptorPtr) == NO_DESCRIPTOR) ||
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#if defined(USE_RAM_DESCRIPTORS)
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(wValue_LSB > DevDescriptorPtr->NumberOfConfigurations))
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#elif defined (USE_EEPROM_DESCRIPTORS)
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(wValue_LSB > eeprom_read_byte(&DevDescriptorPtr->NumberOfConfigurations)))
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#else
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(wValue_LSB > 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_ClearSetupReceived();
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USB_ConfigurationNumber = wValue_LSB;
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Endpoint_ClearSetupIN();
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if (!(AlreadyConfigured) && USB_ConfigurationNumber)
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RAISE_EVENT(USB_DeviceEnumerationComplete);
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RAISE_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_ClearSetupReceived();
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Endpoint_Write_Byte(USB_ConfigurationNumber);
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Endpoint_ClearSetupIN();
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while (!(Endpoint_IsSetupOUTReceived()));
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Endpoint_ClearSetupOUT();
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}
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static void USB_Device_GetDescriptor(void)
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{
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uint16_t wValue = Endpoint_Read_Word_LE();
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uint16_t wIndex = Endpoint_Read_Word_LE();
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uint16_t wLength = Endpoint_Read_Word_LE();
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void* DescriptorPointer;
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uint16_t DescriptorSize;
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bool SendZLP;
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if ((DescriptorSize = USB_GetDescriptor(wValue, wIndex, &DescriptorPointer)) == NO_DESCRIPTOR)
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return;
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Endpoint_ClearSetupReceived();
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if (wLength > DescriptorSize)
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wLength = DescriptorSize;
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while (wLength)
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{
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while (!(Endpoint_IsSetupINReady()))
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{
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if (Endpoint_IsSetupOUTReceived())
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{
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Endpoint_ClearSetupOUT();
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return;
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}
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}
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while (wLength && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
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{
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#if defined(USE_RAM_DESCRIPTORS)
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Endpoint_Write_Byte(*((uint8_t*)DescriptorPointer++));
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#elif 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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wLength--;
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}
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SendZLP = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
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Endpoint_ClearSetupIN();
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}
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if (SendZLP)
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{
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while (!(Endpoint_IsSetupINReady()));
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Endpoint_ClearSetupIN();
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}
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while (!(Endpoint_IsSetupOUTReceived()));
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Endpoint_ClearSetupOUT();
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}
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static void USB_Device_GetStatus(const uint8_t bmRequestType)
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{
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uint8_t CurrentStatus = 0;
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Endpoint_Discard_Word();
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uint8_t wIndex_LSB = Endpoint_Read_Byte();
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switch (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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case (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_ENDPOINT):
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Endpoint_SelectEndpoint(wIndex_LSB);
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CurrentStatus = Endpoint_IsStalled();
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break;
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}
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Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
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Endpoint_ClearSetupReceived();
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Endpoint_Write_Word_LE(CurrentStatus);
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Endpoint_ClearSetupIN();
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while (!(Endpoint_IsSetupOUTReceived()));
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Endpoint_ClearSetupOUT();
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}
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#if !defined(NO_CLEARSET_FEATURE_REQUEST)
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static void USB_Device_ClearSetFeature(const uint8_t bRequest, const uint8_t bmRequestType)
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{
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uint16_t wValue = Endpoint_Read_Word_LE();
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uint16_t wIndex = Endpoint_Read_Word_LE();
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switch (bmRequestType & CONTROL_REQTYPE_RECIPIENT)
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{
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case REQREC_ENDPOINT:
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if (wValue == FEATURE_ENDPOINT_HALT)
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{
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uint8_t EndpointIndex = (wIndex & ENDPOINT_EPNUM_MASK);
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if (EndpointIndex != ENDPOINT_CONTROLEP)
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{
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Endpoint_SelectEndpoint(EndpointIndex);
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if (Endpoint_IsEnabled())
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{
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if (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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Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
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Endpoint_ClearSetupReceived();
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Endpoint_ClearSetupIN();
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}
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}
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break;
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}
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}
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#endif
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#endif
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