WebUSB compatibility and example

Demos/Device/LowLevel/WebUSB/Config/AppConfig.h

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+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2019.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2019 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
+ * \brief Application Configuration Header File
+ *
+ * This is a header file which is be used to configure some of
+ * the application's compile time options, as an alternative to
+ * specifying the compile time constants supplied through a
+ * makefile or build system.
+ *
+ * For information on what each token does, refer to the
+ * \ref Sec_Options section of the application documentation.
+ */
+
+#ifndef _APP_CONFIG_H_
+#define _APP_CONFIG_H_
+
+ #define WEBUSB_VENDOR_CODE 0x42
+ #define WEBUSB_LANDING_PAGE_INDEX 0
+
+ #define MS_OS_20_VENDOR_CODE 0x45 // Must be different than WEBUSB_VENDOR_CODE
+ #define MS_OS_20_DESCRIPTOR_SET_TOTAL_LENGTH (10 + 20) // Sum of `.Length`s in MS_OS_20_Descriptor in WebUSB.c
+
+#endif

Demos/Device/LowLevel/WebUSB/Config/LUFAConfig.h

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+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2019.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2019 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
+ * \brief LUFA Library Configuration Header File
+ *
+ * This header file is used to configure LUFA's compile time options,
+ * as an alternative to the compile time constants supplied through
+ * a makefile.
+ *
+ * For information on what each token does, refer to the LUFA
+ * manual section "Summary of Compile Tokens".
+ */
+
+#ifndef _LUFA_CONFIG_H_
+#define _LUFA_CONFIG_H_
+
+ #if (ARCH == ARCH_AVR8)
+
+ /* Non-USB Related Configuration Tokens: */
+// #define DISABLE_TERMINAL_CODES
+
+ /* USB Class Driver Related Tokens: */
+// #define HID_HOST_BOOT_PROTOCOL_ONLY
+// #define HID_STATETABLE_STACK_DEPTH {Insert Value Here}
+// #define HID_USAGE_STACK_DEPTH {Insert Value Here}
+// #define HID_MAX_COLLECTIONS {Insert Value Here}
+// #define HID_MAX_REPORTITEMS {Insert Value Here}
+// #define HID_MAX_REPORT_IDS {Insert Value Here}
+// #define NO_CLASS_DRIVER_AUTOFLUSH
+
+ /* General USB Driver Related Tokens: */
+// #define ORDERED_EP_CONFIG
+ #define USE_STATIC_OPTIONS (USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)
+ #define USB_DEVICE_ONLY
+// #define USB_HOST_ONLY
+// #define USB_STREAM_TIMEOUT_MS {Insert Value Here}
+// #define NO_LIMITED_CONTROLLER_CONNECT
+// #define NO_SOF_EVENTS
+
+ /* USB Device Mode Driver Related Tokens: */
+// #define USE_RAM_DESCRIPTORS
+ #define USE_FLASH_DESCRIPTORS
+// #define USE_EEPROM_DESCRIPTORS
+// #define NO_INTERNAL_SERIAL
+ #define FIXED_CONTROL_ENDPOINT_SIZE 8
+// #define DEVICE_STATE_AS_GPIOR {Insert Value Here}
+ #define FIXED_NUM_CONFIGURATIONS 1
+// #define CONTROL_ONLY_DEVICE
+// #define INTERRUPT_CONTROL_ENDPOINT
+// #define NO_DEVICE_REMOTE_WAKEUP
+// #define NO_DEVICE_SELF_POWER
+
+ /* USB Host Mode Driver Related Tokens: */
+// #define HOST_STATE_AS_GPIOR {Insert Value Here}
+// #define USB_HOST_TIMEOUT_MS {Insert Value Here}
+// #define HOST_DEVICE_SETTLE_DELAY_MS {Insert Value Here}
+// #define NO_AUTO_VBUS_MANAGEMENT
+// #define INVERTED_VBUS_ENABLE_LINE
+
+ #elif (ARCH == ARCH_XMEGA)
+
+ /* Non-USB Related Configuration Tokens: */
+// #define DISABLE_TERMINAL_CODES
+
+ /* USB Class Driver Related Tokens: */
+// #define HID_HOST_BOOT_PROTOCOL_ONLY
+// #define HID_STATETABLE_STACK_DEPTH {Insert Value Here}
+// #define HID_USAGE_STACK_DEPTH {Insert Value Here}
+// #define HID_MAX_COLLECTIONS {Insert Value Here}
+// #define HID_MAX_REPORTITEMS {Insert Value Here}
+// #define HID_MAX_REPORT_IDS {Insert Value Here}
+// #define NO_CLASS_DRIVER_AUTOFLUSH
+
+ /* General USB Driver Related Tokens: */
+ #define USE_STATIC_OPTIONS (USB_DEVICE_OPT_FULLSPEED | USB_OPT_RC32MCLKSRC | USB_OPT_BUSEVENT_PRIHIGH)
+// #define USB_STREAM_TIMEOUT_MS {Insert Value Here}
+// #define NO_LIMITED_CONTROLLER_CONNECT
+// #define NO_SOF_EVENTS
+
+ /* USB Device Mode Driver Related Tokens: */
+// #define USE_RAM_DESCRIPTORS
+ #define USE_FLASH_DESCRIPTORS
+// #define USE_EEPROM_DESCRIPTORS
+// #define NO_INTERNAL_SERIAL
+ #define FIXED_CONTROL_ENDPOINT_SIZE 8
+// #define DEVICE_STATE_AS_GPIOR {Insert Value Here}
+ #define FIXED_NUM_CONFIGURATIONS 1
+// #define CONTROL_ONLY_DEVICE
+ #define MAX_ENDPOINT_INDEX 2
+// #define NO_DEVICE_REMOTE_WAKEUP
+// #define NO_DEVICE_SELF_POWER
+
+ #else
+
+ #error Unsupported architecture for this LUFA configuration file.
+
+ #endif
+#endif

Demos/Device/LowLevel/WebUSB/Descriptors.c

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+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2019.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2019 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, 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(2,0,1), /* Must be minimum version 2.0.1 for BOS support */
+ .Class = USB_CSCP_NoDeviceClass,
+ .SubClass = USB_CSCP_NoDeviceSubclass,
+ .Protocol = USB_CSCP_NoDeviceProtocol,
+
+ .Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
+
+ .VendorID = 0x03EB,
+ .ProductID = 0x206F,
+ .ReleaseNumber = VERSION_BCD(0,0,1),
+
+ .ManufacturerStrIndex = STRING_ID_Manufacturer,
+ .ProductStrIndex = STRING_ID_Product,
+ .SerialNumStrIndex = NO_DESCRIPTOR,
+
+ .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
+};
+
+/** Binary device Object Store (BOS) descriptor structure. This descriptor, located in memory, describes a
+ * flexible and extensible framework for describing and adding device-level capabilities to the set of USB standard
+ * specifications. The BOS descriptor defines a root descriptor that is similar to the configuration descriptor,
+ * and is the base descriptor for accessing a family of related descriptors. It defines the number of 'sub' Device
+ * Capability Descriptors and the total length of itself and the sub-descriptors.
+ */
+
+const USB_Descriptor_BOS_t PROGMEM BOSDescriptor = BOS_DESCRIPTOR(
+ (MS_OS_20_PLATFORM_DESCRIPTOR(MS_OS_20_VENDOR_CODE, MS_OS_20_DESCRIPTOR_SET_TOTAL_LENGTH))
+ (WEBUSB_PLATFORM_DESCRIPTOR(WEBUSB_VENDOR_CODE, WEBUSB_LANDING_PAGE_INDEX))
+);
+
+/** 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)
+ },
+
+ .WebUSB_Interface =
+ {
+ .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+ .InterfaceNumber = INTERFACE_ID_WebUSB,
+ .AlternateSetting = 0x00,
+
+ .TotalEndpoints = 2,
+
+ .Class = USB_CSCP_VendorSpecificClass,
+ .SubClass = USB_CSCP_VendorSpecificSubclass,
+ .Protocol = USB_CSCP_VendorSpecificProtocol,
+
+ .InterfaceStrIndex = NO_DESCRIPTOR
+ },
+
+ .WebUSB_DataInEndpoint =
+ {
+ .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+ .EndpointAddress = WEBUSB_IN_EPADDR,
+ .Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+ .EndpointSize = WEBUSB_IO_EPSIZE,
+ .PollingIntervalMS = 0x05
+ },
+
+ .WebUSB_DataOutEndpoint =
+ {
+ .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+ .EndpointAddress = WEBUSB_OUT_EPADDR,
+ .Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+ .EndpointSize = WEBUSB_IO_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 & Benjamin Riggs");
+
+/** 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 WebUSB 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_BOS:
+ Address = &BOSDescriptor;
+ Size = pgm_read_byte(&BOSDescriptor.TotalLength);
+ 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;
+ }
+
+ *DescriptorAddress = Address;
+ return Size;
+}