From 355d12e039caafbb8e0ae18427be3acef03719d1 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sun, 6 Feb 2011 17:04:39 +0000 Subject: Tighten up the Bootloader GetDescriptor() function, as the descriptor size can be extracted from the header after the address has been found. --- Bootloaders/CDC/Descriptors.c | 19 +++++-------------- Bootloaders/DFU/Descriptors.c | 33 ++++++++++++--------------------- Bootloaders/DFU/Descriptors.h | 30 +++++++++++++++--------------- 3 files changed, 32 insertions(+), 50 deletions(-) (limited to 'Bootloaders') diff --git a/Bootloaders/CDC/Descriptors.c b/Bootloaders/CDC/Descriptors.c index 5cffe2f69..267c5dcae 100644 --- a/Bootloaders/CDC/Descriptors.c +++ b/Bootloaders/CDC/Descriptors.c @@ -206,38 +206,29 @@ 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 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; - } + Address = &LanguageString; else - { - Address = &ProductString; - Size = ProductString.Header.Size; - } + Address = &ProductString; break; } *DescriptorAddress = Address; - return Size; + return (Address != NULL) ? ((USB_Descriptor_Header_t*)Address)->Size : NO_DESCRIPTOR; } diff --git a/Bootloaders/DFU/Descriptors.c b/Bootloaders/DFU/Descriptors.c index 51dfff273..9baa8890d 100644 --- a/Bootloaders/DFU/Descriptors.c +++ b/Bootloaders/DFU/Descriptors.c @@ -73,17 +73,17 @@ USB_Descriptor_Configuration_t ConfigurationDescriptor = { .Config = { - .Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration}, + .Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration}, - .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t), - .TotalInterfaces = 1, + .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t), + .TotalInterfaces = 1, - .ConfigurationNumber = 1, - .ConfigurationStrIndex = NO_DESCRIPTOR, + .ConfigurationNumber = 1, + .ConfigurationStrIndex = NO_DESCRIPTOR, - .ConfigAttributes = USB_CONFIG_ATTR_BUSPOWERED, + .ConfigAttributes = USB_CONFIG_ATTR_BUSPOWERED, - .MaxPowerConsumption = USB_CONFIG_POWER_MA(100) + .MaxPowerConsumption = USB_CONFIG_POWER_MA(100) }, .DFU_Interface = @@ -147,38 +147,29 @@ 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 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; - } + Address = &LanguageString; else - { - Address = &ProductString; - Size = ProductString.Header.Size; - } + Address = &ProductString; break; } *DescriptorAddress = Address; - return Size; + return (Address != NULL) ? ((USB_Descriptor_Header_t*)Address)->Size : NO_DESCRIPTOR; } diff --git a/Bootloaders/DFU/Descriptors.h b/Bootloaders/DFU/Descriptors.h index 21c5da768..14203c3e9 100644 --- a/Bootloaders/DFU/Descriptors.h +++ b/Bootloaders/DFU/Descriptors.h @@ -137,21 +137,21 @@ */ typedef struct { - USB_Descriptor_Header_t Header; /**< Standard descriptor header structure */ - - uint8_t Attributes; /**< DFU device attributes, a mask comprising of the - * ATTR_* macros listed in this source file - */ - uint16_t DetachTimeout; /**< Timeout in milliseconds between a USB_DETACH - * command being issued and the device detaching - * from the USB bus - */ - uint16_t TransferSize; /**< Maximum number of bytes the DFU device can accept - * from the host in a transaction - */ - uint16_t DFUSpecification; /**< BCD packed DFU specification number this DFU - * device complies with - */ + USB_Descriptor_Header_t Header; /**< Standard descriptor header structure */ + + uint8_t Attributes; /**< DFU device attributes, a mask comprising of the + * ATTR_* macros listed in this source file + */ + uint16_t DetachTimeout; /**< Timeout in milliseconds between a USB_DETACH + * command being issued and the device detaching + * from the USB bus + */ + uint16_t TransferSize; /**< Maximum number of bytes the DFU device can accept + * from the host in a transaction + */ + uint16_t DFUSpecification; /**< BCD packed DFU specification number this DFU + * device complies with + */ } USB_Descriptor_DFU_Functional_t; /** Type define for the device configuration descriptor structure. This must be defined in the -- cgit v1.2.3