188 lines
6.8 KiB
C
188 lines
6.8 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2017.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all 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 disclaims 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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/** HID class report descriptor. This is a special descriptor constructed with values from the
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* USBIF HID class specification to describe the reports and capabilities of the HID device. This
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* descriptor is parsed by the host and its contents used to determine what data (and in what encoding)
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* the device will send, and what it may be sent back from the host. Refer to the HID specification for
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* more details on HID report descriptors.
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*/
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const USB_Descriptor_HIDReport_Datatype_t HIDReport[] =
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{
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HID_RI_USAGE_PAGE(16, 0xFFDC), /* Vendor Page 0xDC */
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HID_RI_USAGE(8, 0xFB), /* Vendor Usage 0xFB */
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HID_RI_COLLECTION(8, 0x01), /* Vendor Usage 1 */
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HID_RI_USAGE(8, 0x02), /* Vendor Usage 2 */
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HID_RI_LOGICAL_MINIMUM(8, 0x00),
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HID_RI_LOGICAL_MAXIMUM(8, 0xFF),
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HID_RI_REPORT_SIZE(8, 0x08),
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HID_RI_REPORT_COUNT(16, (sizeof(uint16_t) + SPM_PAGESIZE)),
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HID_RI_OUTPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE | HID_IOF_NON_VOLATILE),
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HID_RI_END_COLLECTION(0),
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};
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/** Device descriptor structure. This descriptor, located in SRAM 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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const 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(1,1,0),
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.Class = USB_CSCP_NoDeviceClass,
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.SubClass = USB_CSCP_NoDeviceSubclass,
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.Protocol = USB_CSCP_NoDeviceProtocol,
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.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
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.VendorID = 0x03EB,
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.ProductID = 0x2067,
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.ReleaseNumber = VERSION_BCD(0,0,1),
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.ManufacturerStrIndex = NO_DESCRIPTOR,
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.ProductStrIndex = NO_DESCRIPTOR,
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.SerialNumStrIndex = NO_DESCRIPTOR,
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.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
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};
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/** Configuration descriptor structure. This descriptor, located in SRAM 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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const 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_RESERVED,
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.MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
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},
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.HID_Interface =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
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.InterfaceNumber = INTERFACE_ID_GenericHID,
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.AlternateSetting = 0x00,
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.TotalEndpoints = 1,
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.Class = HID_CSCP_HIDClass,
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.SubClass = HID_CSCP_NonBootSubclass,
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.Protocol = HID_CSCP_NonBootProtocol,
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.InterfaceStrIndex = NO_DESCRIPTOR
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},
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.HID_VendorHID =
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{
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.Header = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
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.HIDSpec = VERSION_BCD(1,1,1),
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.CountryCode = 0x00,
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.TotalReportDescriptors = 1,
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.HIDReportType = HID_DTYPE_Report,
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.HIDReportLength = sizeof(HIDReport)
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},
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.HID_ReportINEndpoint =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
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.EndpointAddress = HID_IN_EPADDR,
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.Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
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.EndpointSize = HID_IN_EPSIZE,
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.PollingIntervalMS = 0x05
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},
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};
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/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
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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 CALLBACK_USB_GetDescriptor(const uint16_t wValue,
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const uint16_t wIndex,
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const void** const DescriptorAddress)
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{
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const uint8_t DescriptorType = (wValue >> 8);
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const void* Address = NULL;
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uint16_t Size = NO_DESCRIPTOR;
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/* If/Else If chain compiles slightly smaller than a switch case */
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if (DescriptorType == DTYPE_Device)
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{
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Address = &DeviceDescriptor;
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Size = sizeof(USB_Descriptor_Device_t);
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}
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else if (DescriptorType == DTYPE_Configuration)
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{
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Address = &ConfigurationDescriptor;
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Size = sizeof(USB_Descriptor_Configuration_t);
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}
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else if (DescriptorType == HID_DTYPE_HID)
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{
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Address = &ConfigurationDescriptor.HID_VendorHID;
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Size = sizeof(USB_HID_Descriptor_HID_t);
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}
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else if (DescriptorType == HID_DTYPE_Report)
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{
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Address = &HIDReport;
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Size = sizeof(HIDReport);
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}
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*DescriptorAddress = Address;
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return Size;
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}
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