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Diffstat (limited to 'lib/lufa/Bootloaders/MassStorage/Descriptors.c')
| -rw-r--r-- | lib/lufa/Bootloaders/MassStorage/Descriptors.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/lib/lufa/Bootloaders/MassStorage/Descriptors.c b/lib/lufa/Bootloaders/MassStorage/Descriptors.c new file mode 100644 index 000000000..e8bdbd4f5 --- /dev/null +++ b/lib/lufa/Bootloaders/MassStorage/Descriptors.c @@ -0,0 +1,157 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 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. + */ +const USB_Descriptor_Device_t DeviceDescriptor = +{ + .Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device}, + + .USBSpecification = VERSION_BCD(1,1,0), + .Class = USB_CSCP_NoDeviceClass, + .SubClass = USB_CSCP_NoDeviceSubclass, + .Protocol = USB_CSCP_NoDeviceProtocol, + + .Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE, + + .VendorID = 0x03EB, + .ProductID = 0x2045, + .ReleaseNumber = VERSION_BCD(0,0,1), + + .ManufacturerStrIndex = NO_DESCRIPTOR, + .ProductStrIndex = NO_DESCRIPTOR, + .SerialNumStrIndex = NO_DESCRIPTOR, + + .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS +}; + +/** 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 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, + + .MaxPowerConsumption = USB_CONFIG_POWER_MA(100) + }, + + .MS_Interface = + { + .Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface}, + + .InterfaceNumber = INTERFACE_ID_MassStorage, + .AlternateSetting = 0, + + .TotalEndpoints = 2, + + .Class = MS_CSCP_MassStorageClass, + .SubClass = MS_CSCP_SCSITransparentSubclass, + .Protocol = MS_CSCP_BulkOnlyTransportProtocol, + + .InterfaceStrIndex = NO_DESCRIPTOR + }, + + .MS_DataInEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = MASS_STORAGE_IN_EPADDR, + .Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = MASS_STORAGE_IO_EPSIZE, + .PollingIntervalMS = 0x05 + }, + + .MS_DataOutEndpoint = + { + .Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint}, + + .EndpointAddress = MASS_STORAGE_OUT_EPADDR, + .Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA), + .EndpointSize = MASS_STORAGE_IO_EPSIZE, + .PollingIntervalMS = 0x05 + } +}; + +/** 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 void* Address = NULL; + uint16_t Size = NO_DESCRIPTOR; + + /* If/Else If chain compiles slightly smaller than a switch case */ + if (DescriptorType == DTYPE_Device) + { + Address = &DeviceDescriptor; + Size = sizeof(USB_Descriptor_Device_t); + } + else if (DescriptorType == DTYPE_Configuration) + { + Address = &ConfigurationDescriptor; + Size = sizeof(USB_Descriptor_Configuration_t); + } + + *DescriptorAddress = Address; + return Size; +} + |