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IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef APP_USBD_DESCRIPTOR_H__ #define APP_USBD_DESCRIPTOR_H__ #ifdef __cplusplus extern "C" { #endif #include "nrf.h" #include "nrf_drv_usbd.h" #include "app_usbd_langid.h" #include "app_util_platform.h" /* Compiler support for anonymous unions */ ANON_UNIONS_ENABLE /** * @defgroup app_usbd_descriptor USB standard descriptors * @ingroup app_usbd * * @brief @tagAPI52840 Module with types definitions used for standard descriptors. * @{ */ /** * @brief Helper macro for translating unsigned 24 bit value to 2 byte raw descriptor * */ #define APP_USBD_U16_TO_RAW_DSC(val) (uint8_t)(val), \ (uint8_t)(((val) / (256))) /** * @brief Helper macro for translating unsigned 24 bit value to 3 byte raw descriptor * */ #define APP_USBD_U24_TO_RAW_DSC(val) (uint8_t)(val), \ (uint8_t)(((val) / (256))), \ (uint8_t)(((val) / (256 * 256))) /** * @brief Helper macro for translating unsigned 32 bit value to 4 byte raw descriptor * */ #define APP_USBD_U32_TO_RAW_DSC(val) (uint8_t)(val), \ (uint8_t)(((val) / (256))), \ (uint8_t)(((val) / (256 * 256))) \ (uint8_t)(((val) / (256 * 256 * 256))) /** * @brief Descriptor types * * Descriptor types used in two situations: * - when processing @ref APP_USBD_SETUP_STDREQ_GET_DESCRIPTOR SETUP request, * the required descriptor type may be placed in wValue in HighByte. * - As a descriptor identifier itself inside descriptor stream. * * According to chapter 9.6 of USB 2.0 specification, following descriptors may * be requested directly by GetDescriptor method: * - @ref APP_USBD_DESCRIPTOR_DEVICE * - @ref APP_USBD_DESCRIPTOR_DEVICE_QUALIFIER (not used for FullSpeed only device) * - @ref APP_USBD_DESCRIPTOR_CONFIGURATION * - @ref APP_USBD_DESCRIPTOR_STRING */ typedef enum { APP_USBD_DESCRIPTOR_DEVICE = 1, /**< Device descriptor. */ APP_USBD_DESCRIPTOR_CONFIGURATION = 2, /**< * Specific configuration descriptor. * Configuration descriptor is always followed by all the related interface * and endpoints descriptors. */ APP_USBD_DESCRIPTOR_STRING = 3, /**< String descriptor. */ APP_USBD_DESCRIPTOR_INTERFACE = 4, /**< * Interface descriptor followed by all the related endpoints descriptors. * * @note It is returned together with @ref APP_USBD_DESCRIPTOR_CONFIGURATION. * Cannot be accessed by GetDescriptor or SetDescriptor */ APP_USBD_DESCRIPTOR_ENDPOINT = 5, /**< * Endpoint descriptor. * * @note It is returned together with @ref APP_USBD_DESCRIPTOR_CONFIGURATION. * Cannot be accessed by GetDescriptor or SetDescriptor */ APP_USBD_DESCRIPTOR_DEVICE_QUALIFIER = 6, /**< @note Not supported - used only in HighSpeed capable devices. */ APP_USBD_DESCRIPTOR_OTHER_SPEED_CONFIGURATION = 7, /**< @note Not supported - our USB implementation supports only one speed. */ APP_USBD_DESCRIPTOR_INTERFACE_POWER = 8, /**< @note Not supported */ APP_USBD_DESCRIPTOR_OTG = 9, /**< @note Not supported - Our USB have not OTG functionality */ APP_USBD_DESCRIPTOR_DEBUG = 10, /**< Debug channel descriptor if available, can be only reached by GetDescriptor */ APP_USBD_DESCRIPTOR_INTERFACE_ASSOCIATION = 11 /**< * Descriptor used to describe that two or more interfaces are associated to the same function. * * @note It is returned together with @ref APP_USBD_DESCRIPTOR_CONFIGURATION. * Cannot be accessed by GetDescriptor or SetDescriptor */ } app_usbd_descriptor_t; /* Make all descriptors packed */ #pragma pack(push, 1) /** * @brief Common descriptor header * * The header that we can find on the beginning of all descriptors that contains * the descriptor length and type. */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal one of @ref app_usbd_descriptor_t. /** Class specific descriptors values are defined inside classes. */ } app_usbd_descriptor_header_t; /** * @brief Device descriptor * * Descriptor used for the whole device */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal to @ref APP_USBD_DESCRIPTOR_DEVICE. uint16_t bcdUSB; //!< USB Specification Release Number in Binary-Coded Decimal uint8_t bDeviceClass; //!< Device class code. /**< If 0, each interface specifies its own class information. * 0xFF for vendor-specific. */ uint8_t bDeviceSubClass; //!< Subclass code. /**< If bDevice Class is set to value other than 0xFF, * all values here are reserved for assignment by USB-IF. */ uint8_t bDeviceProtocol; //!< Subclass code. /**< If 0, no specific protocol is defined on device basis. * Each interface may define its own protocol then. * If set to 0xFF, vendor-specific protocol is used. */ uint8_t bMaxPacketSize0; //!< Maximum packet size for endpoint zero. uint16_t idVendor; //!< Vendor ID (Assigned by the USB-IF). uint16_t idProduct; //!< Product ID (assigned by manufacturer). uint16_t bcdDevice; //!< Device release number in binary-coded decimal. uint8_t iManufacturer; //!< Index of string descriptor in describing manufacturer. uint8_t iProduct; //!< Index of string descriptor in describing product. uint8_t iSerialNumber; //!< Index of string descriptor in describing the device's serial number. uint8_t bNumConfigurations; //!< Number of possible configurations. } app_usbd_descriptor_device_t; /** * @brief Attributes masks * * Masks used for attributes in configuration. */ typedef enum { /** This is reserved descriptor that has always to be set */ APP_USBD_DESCRIPTOR_CONFIGURATION_ATTRIBUTE_ALWAYS_SET_MASK = 1U << 7, /** Attribute that informs that device is self powered */ APP_USBD_DESCRIPTOR_CONFIGURATION_ATTRIBUTE_SELF_POWERED_MASK = 1U << 6, /** Attribute that informs that device has Remove Wakeup functionality */ APP_USBD_DESCRIPTOR_CONFIGURATION_ATTRIBUTE_REMOTE_WAKEUP_MASK = 1U << 5 } app_usbd_descriptor_configuration_attributes_t; /** * @brief Configuration descriptor * * Descriptor used at the beginning of configuration response. */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal to @ref APP_USBD_DESCRIPTOR_DEVICE. uint16_t wTotalLength; //!< Total length of configuration data, including all descriptors returned after configuration itself. uint8_t bNumInterfaces; //!< Number of interfaces supportedf by this configuration uint8_t bConfigurationValue; //!< Value to use as an argument to the SetConfiguration request. uint8_t iConfiguration; //!< Index of string descriptor describing this configuration. uint8_t bmAttributes; //!< Configuration characteristics. uint8_t bMaxPower; //!< Maximum power consumption. Expressed in 2 mA units. } app_usbd_descriptor_configuration_t; /** * @brief Raw descriptor - String descriptor zero * * String descriptor sent only as a response for GetDescriptor. */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal to @ref APP_USBD_DESCRIPTOR_STRING. uint16_t wLANGID[]; //!< The array of LANGID codes supported by the device. } app_usbd_descriptor_string0_t; /** * @brief Raw descriptor - Any normal string * * String descriptor sent only as a response for GetDescriptor. */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal to @ref APP_USBD_DESCRIPTOR_STRING. uint16_t bString[]; //!< UNICODE encoded string. } app_usbd_descriptor_string_t; /** * @brief Interface descriptor * * Interface descriptor, returned as a part of configuration descriptor. */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal to @ref APP_USBD_DESCRIPTOR_INTERFACE. uint8_t bInterfaceNumber; //!< Number of this interface. uint8_t bAlternateSetting; //!< Value used to select this alternate setting. uint8_t bNumEndpoints; //!< Number of endpoints used by this interface. uint8_t bInterfaceClass; //!< Class code (assigned by the USB-IF). 0xff for vendor specific. uint8_t bInterfaceSubClass; //!< Subclass code (assigned by the USB-IF). uint8_t bInterfaceProtocol; //!< Protocol code (assigned by the USB-IF). 0xff for vendor specific. uint8_t iInterface; //!< Index of string descriptor describing this interface. } app_usbd_descriptor_iface_t; /** Offset of endpoint type attribute bits */ #define APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET 0 /** Mask of endpoint type attribute bits */ #define APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_MASK BF_MASK(2, APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET) /** Offset of endpoint synchronization type attribute bits */ #define APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET 2 /** Mask of endpoint synchronization type attribute bits */ #define APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_MASK BF_MASK(2, APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET) /** Offset of endpoint usage type attribute bits */ #define APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_OFFSET 4 /** Mask of endpoint usage type attribute bits */ #define APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_MASK BF_MASK(2, APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_OFFSET) /** * @brief Endpoint attributes mnemonics * * @sa APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_MASK * @sa APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_MASK * @sa APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_OFFSET APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_MASK */ typedef enum { APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_CONTROL = 0 << APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_ISOCHRONOUS = 1 << APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_BULK = 2 << APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_INTERRUPT = 3 << APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_NONE = 0 << APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_ASYNCHRONOUS = 1 << APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_ADAPTIVE = 2 << APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_SYNCHRONOUS = 3 << APP_USBD_DESCRIPTOR_EP_ATTR_SYNC_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_DATA = 0 << APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_FEEDBACK = 1 << APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_OFFSET, APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_IMPLICIT = 2 << APP_USBD_DESCRIPTOR_EP_ATTR_USAGE_OFFSET } app_usbd_descriptor_ep_attr_bitmap_t; /** * @brief Endpoint descriptor * * Endpoint descriptor, returned as a part of configuration descriptor. */ typedef struct { uint8_t bLength; //!< Size of the descriptor in bytes. uint8_t bDescriptorType; //!< Should equal to @ref APP_USBD_DESCRIPTOR_ENDPOINT. uint8_t bEndpointAddress; //!< Endpoint address uint8_t bmAttributes; //!< Endpoint attributes uint16_t wMaxPacketSize; //!< Maximum packet size this endpoint is capable of handling. uint8_t bInterval; //!< Interval for pooling endpoint for data transfers. } app_usbd_descriptor_ep_t; /** * @brief Interface association descriptor */ typedef struct { uint8_t bLength; //!< size of this descriptor in bytes uint8_t bDescriptorType; //!< INTERFACE descriptor type uint8_t bFirstInterface; //!< Number of interface uint8_t bInterfaceCount; //!< value to select alternate setting uint8_t bFunctionClass; //!< Class code assigned by the USB uint8_t bFunctionSubClass;//!< Sub-class code assigned by the USB uint8_t bFunctionProtocol;//!< Protocol code assigned by the USB uint8_t iFunction; //!< Index of string descriptor } app_usbd_descriptor_iad_t; #pragma pack(pop) ANON_UNIONS_DISABLE #ifdef __cplusplus } #endif /** @} */ #endif /* APP_USBD_DESCRIPTOR_H__ */