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Diffstat (limited to 'LUFA/CodeTemplates/DeviceTemplate/Descriptors.c')
| -rw-r--r-- | LUFA/CodeTemplates/DeviceTemplate/Descriptors.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/LUFA/CodeTemplates/DeviceTemplate/Descriptors.c b/LUFA/CodeTemplates/DeviceTemplate/Descriptors.c new file mode 100644 index 0000000000..0b44c0df28 --- /dev/null +++ b/LUFA/CodeTemplates/DeviceTemplate/Descriptors.c @@ -0,0 +1,180 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, 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 disclaims 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. +*/ + +/** \file + * + * USB Device Descriptors, for library use when in USB device mode. Descriptors are special + * computer-readable structures which the host requests upon device enumeration, to determine + * the device's capabilities and functions. + */ + +#include "Descriptors.h" + +/** Device descriptor structure. This descriptor describes the overall device + * characteristics, including the supported USB version, control endpoint size + * and the number of device configurations. The descriptor is read out by the + * USB host when the enumeration process begins. + */ +const USB_Descriptor_Device_t DeviceDescriptor = +{ + .Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device}, + + .USBSpecification = VERSION_BCD(2,0,0), + .Class = USB_CSCP_NoDeviceClass, + .SubClass = USB_CSCP_NoDeviceSubclass, + .Protocol = USB_CSCP_NoDeviceProtocol, + + .Endpoint0Size = 64, + + .VendorID = 0x0000, + .ProductID = 0x0000, + .ReleaseNumber = VERSION_BCD(0,0,2), + + .ManufacturerStrIndex = 0x01, + .ProductStrIndex = 0x02, + .SerialNumStrIndex = NO_DESCRIPTOR, + + .NumberOfConfigurations = 1 +}; + +/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage + * of the device in one of its supported configurations, including information about any device interfaces + * and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting + * a configuration so that the host may correctly communicate with the USB device. + */ +const USB_Descriptor_Configuration_t ConfigurationDescriptor = +{ + .Config = + { + .Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration}, + + .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t), + .TotalInterfaces = 0, + + .ConfigurationNumber = 1, + .ConfigurationStrIndex = NO_DESCRIPTOR, + + .ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED), + + .MaxPowerConsumption = USB_CONFIG_POWER_MA(100) + }, +}; + +/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests + * the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate + * via the language ID table available at USB.org what languages the device supports for its string descriptors. + */ +const USB_Descriptor_String_t LanguageString = +{ + .Header = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String}, + + .UnicodeString = {LANGUAGE_ID_ENG} +}; + +/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable + * form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device + * Descriptor. + */ +const USB_Descriptor_String_t ManufacturerString = +{ + .Header = {.Size = USB_STRING_LEN(14), .Type = DTYPE_String}, + + .UnicodeString = L"Your Name Here" +}; + +/** Product descriptor string. This is a Unicode string containing the product's details in human readable form, + * and is read out upon request by the host when the appropriate string ID is requested, listed in the Device + * Descriptor. + */ +const USB_Descriptor_String_t ProductString = +{ + .Header = {.Size = USB_STRING_LEN(15), .Type = DTYPE_String}, + + .UnicodeString = L"LUFA USB Device" +}; + +/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors" + * documentation) by the application code so that the address and size of a requested descriptor can be given + * to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function + * is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the + * USB host. + */ +uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, + const uint16_t wIndex, + const void** const DescriptorAddress + #if defined(HAS_MULTIPLE_DESCRIPTOR_ADDRESS_SPACES) + , uint8_t* const DescriptorMemorySpace + #endif + ) +{ + const uint8_t DescriptorType = (wValue >> 8); + const uint8_t DescriptorNumber = (wValue & 0xFF); + + const void* Address = NULL; + uint16_t Size = NO_DESCRIPTOR; + + switch (DescriptorType) + { + case DTYPE_Device: + Address = &DeviceDescriptor; + Size = sizeof(USB_Descriptor_Device_t); + break; + case DTYPE_Configuration: + Address = &ConfigurationDescriptor; + Size = sizeof(USB_Descriptor_Configuration_t); + break; + case DTYPE_String: + switch (DescriptorNumber) + { + case 0x00: + Address = &LanguageString; + Size = pgm_read_byte(&LanguageString.Header.Size); + break; + case 0x01: + Address = &ManufacturerString; + Size = pgm_read_byte(&ManufacturerString.Header.Size); + break; + case 0x02: + Address = &ProductString; + Size = pgm_read_byte(&ProductString.Header.Size); + break; + } + + break; + } + + #if defined(HAS_MULTIPLE_DESCRIPTOR_ADDRESS_SPACES) + *DescriptorMemorySpace = MEMSPACE_RAM; + #endif + + *DescriptorAddress = Address; + return Size; +} + |