258 lines
9.7 KiB
C
258 lines
9.7 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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Copyright 2012 Simon Foster (simon.foster [at] inbox [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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/* On some devices, there is a factory set internal serial number which can be automatically sent to the host as
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* the device's serial number when the Device Descriptor's .SerialNumStrIndex entry is set to USE_INTERNAL_SERIAL.
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* This allows the host to track a device across insertions on different ports, allowing them to retain allocated
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* resources like COM port numbers and drivers. On demos using this feature, give a warning on unsupported devices
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* so that the user can supply their own serial number descriptor instead or remove the USE_INTERNAL_SERIAL value
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* from the Device Descriptor (forcing the host to generate a serial number for each device from the VID, PID and
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* port location).
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*/
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#if (USE_INTERNAL_SERIAL == NO_DESCRIPTOR)
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#warning USE_INTERNAL_SERIAL is not available on this AVR - please manually construct a device serial descriptor.
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#endif
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/** Device descriptor structure. This descriptor, located in FLASH 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 PROGMEM 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 = CDC_CSCP_CDCClass,
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.SubClass = CDC_CSCP_NoSpecificSubclass,
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.Protocol = CDC_CSCP_NoSpecificProtocol,
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.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
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.VendorID = 0x03EB,
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.ProductID = 0x204B,
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.ReleaseNumber = VERSION_BCD(0,0,1),
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.ManufacturerStrIndex = STRING_ID_Manufacturer,
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.ProductStrIndex = STRING_ID_Product,
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.SerialNumStrIndex = USE_INTERNAL_SERIAL,
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.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
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};
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/** Configuration descriptor structure. This descriptor, located in FLASH 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 PROGMEM 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 = 2,
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.ConfigurationNumber = 1,
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.ConfigurationStrIndex = NO_DESCRIPTOR,
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.ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
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.MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
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},
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.CDC_CCI_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_CDC_CCI,
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.AlternateSetting = 0,
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.TotalEndpoints = 1,
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.Class = CDC_CSCP_CDCClass,
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.SubClass = CDC_CSCP_ACMSubclass,
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.Protocol = CDC_CSCP_ATCommandProtocol,
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.InterfaceStrIndex = NO_DESCRIPTOR
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},
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.CDC_Functional_Header =
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{
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.Header = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
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.Subtype = CDC_DSUBTYPE_CSInterface_Header,
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.CDCSpecification = VERSION_BCD(1,1,0),
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},
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.CDC_Functional_ACM =
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{
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.Header = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
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.Subtype = CDC_DSUBTYPE_CSInterface_ACM,
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.Capabilities = 0x06,
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},
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.CDC_Functional_Union =
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{
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.Header = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
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.Subtype = CDC_DSUBTYPE_CSInterface_Union,
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.MasterInterfaceNumber = INTERFACE_ID_CDC_CCI,
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.SlaveInterfaceNumber = INTERFACE_ID_CDC_DCI,
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},
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.CDC_NotificationEndpoint =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
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.EndpointAddress = CDC_NOTIFICATION_EPADDR,
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.Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
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.EndpointSize = CDC_NOTIFICATION_EPSIZE,
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.PollingIntervalMS = 0xFF
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},
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.CDC_DCI_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_CDC_DCI,
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.AlternateSetting = 0,
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.TotalEndpoints = 2,
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.Class = CDC_CSCP_CDCDataClass,
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.SubClass = CDC_CSCP_NoDataSubclass,
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.Protocol = CDC_CSCP_NoDataProtocol,
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.InterfaceStrIndex = NO_DESCRIPTOR
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},
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.CDC_DataOutEndpoint =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
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.EndpointAddress = CDC_RX_EPADDR,
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.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
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.EndpointSize = CDC_TXRX_EPSIZE,
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.PollingIntervalMS = 0x05
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},
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.CDC_DataInEndpoint =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
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.EndpointAddress = CDC_TX_EPADDR,
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.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
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.EndpointSize = CDC_TXRX_EPSIZE,
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.PollingIntervalMS = 0x05
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}
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};
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/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
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* the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
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* via the language ID table available at USB.org what languages the device supports for its string descriptors.
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*/
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const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
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/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
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* form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
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* Descriptor.
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*/
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const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Simon Foster");
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/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
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* and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
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* Descriptor.
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*/
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const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"USB-HD44780 Adapter");
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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 uint8_t DescriptorNumber = (wValue & 0xFF);
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const void* Address = NULL;
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uint16_t Size = NO_DESCRIPTOR;
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switch (DescriptorType)
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{
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case DTYPE_Device:
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Address = &DeviceDescriptor;
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Size = sizeof(USB_Descriptor_Device_t);
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break;
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case DTYPE_Configuration:
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Address = &ConfigurationDescriptor;
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Size = sizeof(USB_Descriptor_Configuration_t);
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break;
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case DTYPE_String:
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switch (DescriptorNumber)
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{
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case STRING_ID_Language:
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Address = &LanguageString;
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Size = pgm_read_byte(&LanguageString.Header.Size);
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break;
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case STRING_ID_Manufacturer:
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Address = &ManufacturerString;
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Size = pgm_read_byte(&ManufacturerString.Header.Size);
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break;
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case STRING_ID_Product:
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Address = &ProductString;
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Size = pgm_read_byte(&ProductString.Header.Size);
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break;
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}
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break;
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}
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*DescriptorAddress = Address;
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return Size;
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}
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