From 237ea87c4fcb4865863fc15e07e179323caa7881 Mon Sep 17 00:00:00 2001 From: Håvard Espeland Date: Sat, 5 Feb 2011 19:26:39 +0100 Subject: Fork of LUFA CDC Bootloader Initial commit --- Descriptors.c | 243 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 243 insertions(+) create mode 100644 Descriptors.c (limited to 'Descriptors.c') diff --git a/Descriptors.c b/Descriptors.c new file mode 100644 index 0000000..8d48c8a --- /dev/null +++ b/Descriptors.c @@ -0,0 +1,243 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2010 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 disclaim 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 SRAM 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. + */ +USB_Descriptor_Device_t DeviceDescriptor = +{ + .Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device}, + + .USBSpecification = VERSION_BCD(01.10), + .Class = CDC_CSCP_CDCClass, + .SubClass = CDC_CSCP_NoSpecificSubclass, + .Protocol = CDC_CSCP_NoSpecificProtocol, + + .Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE, + + .VendorID = 0x03EB, + .ProductID = 0x204A, + .ReleaseNumber = VERSION_BCD(00.01), + + .ManufacturerStrIndex = NO_DESCRIPTOR, + .ProductStrIndex = 0x01, + .SerialNumStrIndex = NO_DESCRIPTOR, + + .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS +}; + +/** Configuration descriptor structure. This descriptor, located in SRAM 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. + */ +USB_Descriptor_Configuration_t ConfigurationDescriptor = +{ + .Config = + { + .Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration}, + + .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t), + .TotalInterfaces = 2, + + .ConfigurationNumber = 1, + .ConfigurationStrIndex = NO_DESCRIPTOR, + + .ConfigAttributes = USB_CONFIG_ATTR_BUSPOWERED, + + .MaxPowerConsumption = USB_CONFIG_POWER_MA(100) + }, + + .CDC_CCI_Interface = + { + .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface}, + + .InterfaceNumber = 0, + .AlternateSetting = 0, + + .TotalEndpoints = 1, + + .Class = CDC_CSCP_CDCClass, + .SubClass = CDC_CSCP_ACMSubclass, + .Protocol = CDC_CSCP_ATCommandProtocol, + + .InterfaceStrIndex = NO_DESCRIPTOR + }, + + .CDC_Functional_Header = + { + .Header = {.Size = sizeof(USB_Descriptor_CDC_FunctionalHeader_t), .Type = DTYPE_CSInterface}, + .Subtype = 0x00, + + .CDCSpecification = VERSION_BCD(01.10), + }, + + .CDC_Functional_ACM = + { + .Header = {.Size = sizeof(USB_Descriptor_CDC_FunctionalACM_t), .Type = DTYPE_CSInterface}, + .Subtype = 0x02, + + .Capabilities = 0x04, + }, + + .CDC_Functional_Union = + { + .Header = {.Size = sizeof(USB_Descriptor_CDC_FunctionalUnion_t), .Type = DTYPE_CSInterface}, + .Subtype = 0x06, + + .MasterInterfaceNumber = 0, + .SlaveInterfaceNumber = 1, + }, + + .CDC_NotificationEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = (ENDPOINT_DESCRIPTOR_DIR_IN | CDC_NOTIFICATION_EPNUM), + .Attributes = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = CDC_NOTIFICATION_EPSIZE, + .PollingIntervalMS = 0xFF + }, + + .CDC_DCI_Interface = + { + .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface}, + + .InterfaceNumber = 1, + .AlternateSetting = 0, + + .TotalEndpoints = 2, + + .Class = CDC_CSCP_CDCDataClass, + .SubClass = CDC_CSCP_NoDataSubclass, + .Protocol = CDC_CSCP_NoDataProtocol, + + .InterfaceStrIndex = NO_DESCRIPTOR + }, + + .CDC_DataOutEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = (ENDPOINT_DESCRIPTOR_DIR_OUT | CDC_RX_EPNUM), + .Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = CDC_TXRX_EPSIZE, + .PollingIntervalMS = 0x01 + }, + + .CDC_DataInEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = (ENDPOINT_DESCRIPTOR_DIR_IN | CDC_TX_EPNUM), + .Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = CDC_TXRX_EPSIZE, + .PollingIntervalMS = 0x01 + } +}; + +/** Language descriptor structure. This descriptor, located in SRAM 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. + */ +USB_Descriptor_String_t LanguageString = +{ + .Header = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String}, + + .UnicodeString = {LANGUAGE_ID_ENG} +}; + +/** 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. + */ +USB_Descriptor_String_t ProductString = +{ + .Header = {.Size = USB_STRING_LEN(18), .Type = DTYPE_String}, + + .UnicodeString = L"AVR CDC Bootloader" +}; + +/** This function is called by the library when in device mode, and must be overridden (see LUFA 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 uint8_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: + if (!(DescriptorNumber)) + { + Address = &LanguageString; + Size = LanguageString.Header.Size; + } + else + { + Address = &ProductString; + Size = ProductString.Header.Size; + } + + break; + } + + *DescriptorAddress = Address; + return Size; +} + -- cgit v1.2.3