181 lines
6.3 KiB
C
181 lines
6.3 KiB
C
/*
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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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/** \file
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*
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* USB Device Descriptors, for library use when in USB device mode. Descriptors are special
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* computer-readable structures which the host requests upon device enumeration, to determine
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* the device's capabilities and functions.
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*/
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#include "Descriptors.h"
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/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
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* device characteristics, including the supported USB version, control endpoint size and the
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* number of device configurations. The descriptor is read out by the USB host when the enumeration
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* process begins.
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*/
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USB_Descriptor_Device_t DeviceDescriptor =
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{
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Header: {Size: sizeof(USB_Descriptor_Device_t), Type: DTYPE_Device},
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USBSpecification: VERSION_BCD(01.10),
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Class: 0x00,
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SubClass: 0x00,
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Protocol: 0x00,
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Endpoint0Size: FIXED_CONTROL_ENDPOINT_SIZE,
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VendorID: 0x03EB,
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ProductID: PRODUCT_ID_CODE,
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ReleaseNumber: 0x0000,
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ManufacturerStrIndex: NO_DESCRIPTOR,
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ProductStrIndex: 0x01,
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SerialNumStrIndex: NO_DESCRIPTOR,
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NumberOfConfigurations: 1
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};
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/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
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* of the device in one of its supported configurations, including information about any device interfaces
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* and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
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* a configuration so that the host may correctly communicate with the USB device.
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*/
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USB_Descriptor_Configuration_t ConfigurationDescriptor =
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{
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Config:
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{
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Header: {Size: sizeof(USB_Descriptor_Configuration_Header_t), Type: DTYPE_Configuration},
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TotalConfigurationSize: sizeof(USB_Descriptor_Configuration_t),
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TotalInterfaces: 1,
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ConfigurationNumber: 1,
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ConfigurationStrIndex: NO_DESCRIPTOR,
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ConfigAttributes: (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELFPOWERED),
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MaxPowerConsumption: USB_CONFIG_POWER_MA(100)
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},
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DFUInterface:
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{
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Header: {Size: sizeof(USB_Descriptor_Interface_t), Type: DTYPE_Interface},
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InterfaceNumber: 0,
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AlternateSetting: 0,
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TotalEndpoints: 0,
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Class: 0xFE,
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SubClass: 0x01,
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Protocol: 0x02,
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InterfaceStrIndex: NO_DESCRIPTOR
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},
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DFUFunctional:
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{
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Header: {Size: sizeof(USB_DFU_Functional_Descriptor_t), Type: DTYPE_DFUFunctional},
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Attributes: (ATTR_CAN_UPLOAD | ATTR_CAN_DOWNLOAD),
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DetatchTimeout: 0x0000,
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TransferSize: 0x0c00,
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DFUSpecification: VERSION_BCD(01.01)
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}
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};
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/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
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* the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
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* via the language ID table available at USB.org what languages the device supports for its string descriptors.
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*/
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USB_Descriptor_String_t LanguageString =
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{
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Header: {Size: USB_STRING_LEN(1), Type: DTYPE_String},
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UnicodeString: {LANGUAGE_ID_ENG}
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};
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/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
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* and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
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* Descriptor.
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*/
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USB_Descriptor_String_t ProductString =
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{
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Header: {Size: USB_STRING_LEN(18), Type: DTYPE_String},
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UnicodeString: L"AVR DFU Bootloader"
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};
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/** This function is called by the library when in device mode, and must be overridden (see StdDescriptors.h
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* documentation) by the application code so that the address and size of a requested descriptor can be given
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* to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
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* is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
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* USB host.
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*/
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uint16_t USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
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{
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const uint8_t DescriptorType = (wValue >> 8);
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const uint8_t DescriptorNumber = (wValue & 0xFF);
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void* Address = NULL;
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uint16_t Size = NO_DESCRIPTOR;
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switch (DescriptorType)
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{
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case DTYPE_Device:
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Address = DESCRIPTOR_ADDRESS(DeviceDescriptor);
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Size = sizeof(USB_Descriptor_Device_t);
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break;
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case DTYPE_Configuration:
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Address = DESCRIPTOR_ADDRESS(ConfigurationDescriptor);
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Size = sizeof(USB_Descriptor_Configuration_t);
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break;
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case DTYPE_String:
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if (!(DescriptorNumber))
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{
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Address = DESCRIPTOR_ADDRESS(LanguageString);
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Size = LanguageString.Header.Size;
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}
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else
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{
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Address = DESCRIPTOR_ADDRESS(ProductString);
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Size = ProductString.Header.Size;
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}
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break;
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}
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*DescriptorAddress = Address;
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return Size;
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}
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