3 Copyright (C) Dean Camera, 2017.
5 dean [at] fourwalledcubicle [dot] com
10 Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
12 Permission to use, copy, modify, distribute, and sell this
13 software and its documentation for any purpose is hereby granted
14 without fee, provided that the above copyright notice appear in
15 all copies and that both that the copyright notice and this
16 permission notice and warranty disclaimer appear in supporting
17 documentation, and that the name of the author not be used in
18 advertising or publicity pertaining to distribution of the
19 software without specific, written prior permission.
21 The author disclaims all warranties with regard to this
22 software, including all implied warranties of merchantability
23 and fitness. In no event shall the author be liable for any
24 special, indirect or consequential damages or any damages
25 whatsoever resulting from loss of use, data or profits, whether
26 in an action of contract, negligence or other tortious action,
27 arising out of or in connection with the use or performance of
33 * USB Device Descriptors, for library use when in USB device mode. Descriptors are special
34 * computer-readable structures which the host requests upon device enumeration, to determine
35 * the device's capabilities and functions.
38 #include "Descriptors.h"
41 /** HID class report descriptor. This is a special descriptor constructed with values from the
42 * USBIF HID class specification to describe the reports and capabilities of the HID device. This
43 * descriptor is parsed by the host and its contents used to determine what data (and in what encoding)
44 * the device will send, and what it may be sent back from the host. Refer to the HID specification for
45 * more details on HID report descriptors.
47 const USB_Descriptor_HIDReport_Datatype_t PROGMEM GenericReport[] =
49 /* Use the HID class driver's standard Vendor HID report.
50 * Vendor Usage Page: 1
51 * Vendor Collection Usage: 1
52 * Vendor Report IN Usage: 2
53 * Vendor Report OUT Usage: 3
54 * Vendor Report Size: GENERIC_REPORT_SIZE
56 HID_DESCRIPTOR_VENDOR(0x00, 0x01, 0x02, 0x03, GENERIC_REPORT_SIZE)
59 /** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
60 * device characteristics, including the supported USB version, control endpoint size and the
61 * number of device configurations. The descriptor is read out by the USB host when the enumeration
64 const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
66 .Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
68 .USBSpecification = VERSION_BCD(1,1,0),
69 .Class = USB_CSCP_NoDeviceClass,
70 .SubClass = USB_CSCP_NoDeviceSubclass,
71 .Protocol = USB_CSCP_NoDeviceProtocol,
73 .Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
77 .ReleaseNumber = VERSION_BCD(0,0,1),
79 .ManufacturerStrIndex = STRING_ID_Manufacturer,
80 .ProductStrIndex = STRING_ID_Product,
81 .SerialNumStrIndex = USE_INTERNAL_SERIAL,
83 .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
86 /** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
87 * of the device in one of its supported configurations, including information about any device interfaces
88 * and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
89 * a configuration so that the host may correctly communicate with the USB device.
91 const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
95 .Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
97 .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
100 .ConfigurationNumber = 1,
101 .ConfigurationStrIndex = NO_DESCRIPTOR,
103 .ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
105 .MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
110 .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
112 .InterfaceNumber = INTERFACE_ID_MassStorage,
113 .AlternateSetting = 0,
117 .Class = MS_CSCP_MassStorageClass,
118 .SubClass = MS_CSCP_SCSITransparentSubclass,
119 .Protocol = MS_CSCP_BulkOnlyTransportProtocol,
121 .InterfaceStrIndex = NO_DESCRIPTOR
126 .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
128 .EndpointAddress = MASS_STORAGE_IN_EPADDR,
129 .Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
130 .EndpointSize = MASS_STORAGE_IO_EPSIZE,
131 .PollingIntervalMS = 0x05
134 .MS_DataOutEndpoint =
136 .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
138 .EndpointAddress = MASS_STORAGE_OUT_EPADDR,
139 .Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
140 .EndpointSize = MASS_STORAGE_IO_EPSIZE,
141 .PollingIntervalMS = 0x05
146 .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
148 .InterfaceNumber = INTERFACE_ID_HID,
149 .AlternateSetting = 0,
153 .Class = HID_CSCP_HIDClass,
154 .SubClass = HID_CSCP_NonBootSubclass,
155 .Protocol = HID_CSCP_NonBootProtocol,
157 .InterfaceStrIndex = NO_DESCRIPTOR
162 .Header = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
164 .HIDSpec = VERSION_BCD(1,1,1),
166 .TotalReportDescriptors = 1,
167 .HIDReportType = HID_DTYPE_Report,
168 .HIDReportLength = sizeof(GenericReport)
171 .HID_ReportINEndpoint =
173 .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
175 .EndpointAddress = GENERIC_IN_EPADDR,
176 .Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
177 .EndpointSize = GENERIC_EPSIZE,
178 .PollingIntervalMS = 0x05
182 /** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
183 * the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
184 * via the language ID table available at USB.org what languages the device supports for its string descriptors.
186 const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
188 /** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
189 * form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
192 const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Dean Camera");
194 /** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
195 * and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
198 const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"Temperature Datalogger");
200 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
201 * documentation) by the application code so that the address and size of a requested descriptor can be given
202 * to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
203 * is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
206 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
207 const uint16_t wIndex,
208 const void** const DescriptorAddress)
210 const uint8_t DescriptorType = (wValue >> 8);
211 const uint8_t DescriptorNumber = (wValue & 0xFF);
213 const void* Address = NULL;
214 uint16_t Size = NO_DESCRIPTOR;
216 switch (DescriptorType)
219 Address = &DeviceDescriptor;
220 Size = sizeof(USB_Descriptor_Device_t);
222 case DTYPE_Configuration:
223 Address = &ConfigurationDescriptor;
224 Size = sizeof(USB_Descriptor_Configuration_t);
227 switch (DescriptorNumber)
229 case STRING_ID_Language:
230 Address = &LanguageString;
231 Size = pgm_read_byte(&LanguageString.Header.Size);
233 case STRING_ID_Manufacturer:
234 Address = &ManufacturerString;
235 Size = pgm_read_byte(&ManufacturerString.Header.Size);
237 case STRING_ID_Product:
238 Address = &ProductString;
239 Size = pgm_read_byte(&ProductString.Header.Size);
245 Address = &ConfigurationDescriptor.HID_GenericHID;
246 Size = sizeof(USB_HID_Descriptor_HID_t);
248 case HID_DTYPE_Report:
249 Address = &GenericReport;
250 Size = sizeof(GenericReport);
254 *DescriptorAddress = Address;