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Diffstat (limited to 'lib/lufa/Demos/Device/LowLevel/GenericHID/Descriptors.c')
| -rw-r--r-- | lib/lufa/Demos/Device/LowLevel/GenericHID/Descriptors.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/lib/lufa/Demos/Device/LowLevel/GenericHID/Descriptors.c b/lib/lufa/Demos/Device/LowLevel/GenericHID/Descriptors.c new file mode 100644 index 0000000000..2a248075ae --- /dev/null +++ b/lib/lufa/Demos/Device/LowLevel/GenericHID/Descriptors.c @@ -0,0 +1,238 @@ +/* + 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" + +/** HID class report descriptor. This is a special descriptor constructed with values from the + * USBIF HID class specification to describe the reports and capabilities of the HID device. This + * descriptor is parsed by the host and its contents used to determine what data (and in what encoding) + * the device will send, and what it may be sent back from the host. Refer to the HID specification for + * more details on HID report descriptors. + */ +const USB_Descriptor_HIDReport_Datatype_t PROGMEM GenericReport[] = +{ + HID_RI_USAGE_PAGE(16, 0xFF00), /* Vendor Page 0 */ + HID_RI_USAGE(8, 0x01), /* Vendor Usage 1 */ + HID_RI_COLLECTION(8, 0x01), /* Vendor Usage 1 */ + HID_RI_USAGE(8, 0x02), /* Vendor Usage 2 */ + HID_RI_LOGICAL_MINIMUM(8, 0x00), + HID_RI_LOGICAL_MAXIMUM(8, 0xFF), + HID_RI_REPORT_SIZE(8, 0x08), + HID_RI_REPORT_COUNT(8, GENERIC_REPORT_SIZE), + HID_RI_INPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE), + HID_RI_USAGE(8, 0x03), /* Vendor Usage 3 */ + HID_RI_LOGICAL_MINIMUM(8, 0x00), + HID_RI_LOGICAL_MAXIMUM(8, 0xFF), + HID_RI_REPORT_SIZE(8, 0x08), + HID_RI_REPORT_COUNT(8, GENERIC_REPORT_SIZE), + HID_RI_OUTPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE | HID_IOF_NON_VOLATILE), + HID_RI_END_COLLECTION(0), +}; + +/** Device descriptor structure. This descriptor, located in FLASH memory, 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 PROGMEM DeviceDescriptor = +{ + .Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device}, + + .USBSpecification = VERSION_BCD(1,1,0), + .Class = USB_CSCP_NoDeviceClass, + .SubClass = USB_CSCP_NoDeviceSubclass, + .Protocol = USB_CSCP_NoDeviceProtocol, + + .Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE, + + .VendorID = 0x03EB, + .ProductID = 0x204F, + .ReleaseNumber = VERSION_BCD(0,0,1), + + .ManufacturerStrIndex = STRING_ID_Manufacturer, + .ProductStrIndex = STRING_ID_Product, + .SerialNumStrIndex = NO_DESCRIPTOR, + + .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS +}; + +/** 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 PROGMEM ConfigurationDescriptor = +{ + .Config = + { + .Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration}, + + .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t), + .TotalInterfaces = 1, + + .ConfigurationNumber = 1, + .ConfigurationStrIndex = NO_DESCRIPTOR, + + .ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED), + + .MaxPowerConsumption = USB_CONFIG_POWER_MA(100) + }, + + .HID_Interface = + { + .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface}, + + .InterfaceNumber = INTERFACE_ID_GenericHID, + .AlternateSetting = 0x00, + + .TotalEndpoints = 2, + + .Class = HID_CSCP_HIDClass, + .SubClass = HID_CSCP_NonBootSubclass, + .Protocol = HID_CSCP_NonBootProtocol, + + .InterfaceStrIndex = NO_DESCRIPTOR + }, + + .HID_GenericHID = + { + .Header = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID}, + + .HIDSpec = VERSION_BCD(1,1,1), + .CountryCode = 0x00, + .TotalReportDescriptors = 1, + .HIDReportType = HID_DTYPE_Report, + .HIDReportLength = sizeof(GenericReport) + }, + + .HID_ReportINEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = GENERIC_IN_EPADDR, + .Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = GENERIC_EPSIZE, + .PollingIntervalMS = 0x05 + }, + + .HID_ReportOUTEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = GENERIC_OUT_EPADDR, + .Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = GENERIC_EPSIZE, + .PollingIntervalMS = 0x05 + } +}; + +/** 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 PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(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 PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Dean Camera"); + +/** 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 PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA Generic HID Demo"); + +/** 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) +{ + 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 STRING_ID_Language: + Address = &LanguageString; + Size = pgm_read_byte(&LanguageString.Header.Size); + break; + case STRING_ID_Manufacturer: + Address = &ManufacturerString; + Size = pgm_read_byte(&ManufacturerString.Header.Size); + break; + case STRING_ID_Product: + Address = &ProductString; + Size = pgm_read_byte(&ProductString.Header.Size); + break; + } + + break; + case HID_DTYPE_HID: + Address = &ConfigurationDescriptor.HID_GenericHID; + Size = sizeof(USB_HID_Descriptor_HID_t); + break; + case HID_DTYPE_Report: + Address = &GenericReport; + Size = sizeof(GenericReport); + break; + } + + *DescriptorAddress = Address; + return Size; +} + |