/*
LUFA Library
- Copyright (C) Dean Camera, 2011.
+ Copyright (C) Dean Camera, 2013.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2013 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
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
- The author disclaim all warranties with regard to this
+ 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
#endif
/* Public Interface - May be used in end-application: */
+ /* Macros: */
+ #if !defined(USB_HOST_TIMEOUT_MS) || defined(__DOXYGEN__)
+ /** Constant for the maximum software timeout period of sent USB control transactions to an attached
+ * device. If a device fails to respond to a sent control request within this period, the
+ * library will return a timeout error code.
+ *
+ * This value may be overridden in the user project makefile as the value of the
+ * \ref USB_HOST_TIMEOUT_MS token, and passed to the compiler using the -D switch.
+ */
+ #define USB_HOST_TIMEOUT_MS 1000
+ #endif
+
/* Enums: */
/** Enum for the \ref USB_Host_SendControlRequest() return code, indicating the reason for the error
* if the transfer of the request is unsuccessful.
{
HOST_SENDCONTROL_Successful = 0, /**< No error occurred in the request transfer. */
HOST_SENDCONTROL_DeviceDisconnected = 1, /**< The attached device was disconnected during the
- * request transfer.
+ * request transfer.
*/
HOST_SENDCONTROL_PipeError = 2, /**< An error occurred in the pipe while sending the request. */
HOST_SENDCONTROL_SetupStalled = 3, /**< The attached device stalled the request, usually
- * indicating that the request is unsupported on the device.
- */
+ * indicating that the request is unsupported on the device.
+ */
HOST_SENDCONTROL_SoftwareTimeOut = 4, /**< The request or data transfer timed out. */
};
/* Global Variables: */
/** Indicates the currently set configuration number of the attached device. This indicates the currently
- * selected configuration value if one has been set sucessfully, or 0 if no configuration has been selected.
+ * selected configuration value if one has been set successfully, or 0 if no configuration has been selected.
*
* To set a device configuration, call the \ref USB_Host_SetDeviceConfiguration() function.
*
- * \note This variable should be treated as read-only in the user application, and never manually
- * changed in value.
+ * \attention This variable should be treated as read-only in the user application, and never manually
+ * changed in value.
*
* \ingroup Group_Host
*/
extern uint8_t USB_Host_ConfigurationNumber;
-
+
/* Function Prototypes: */
/** Sends the request stored in the \ref USB_ControlRequest global structure to the attached device,
* and transfers the data stored in the buffer to the device, or from the device to the buffer
*/
uint8_t USB_Host_SetDeviceConfiguration(const uint8_t ConfigNumber);
- /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the device descriptor.
- * This can be used to easily retrieve information about the device such as its VID, PID and power
- * requirements.
+ /** Sends a GET CONFIGURATION standard request to the attached device, to retrieve the currently selected
+ * device configuration index.
*
* \note After this routine returns, the control pipe will be selected.
*
* \ingroup Group_PipeControlReq
*
- * \param[out] DeviceDescriptorPtr Pointer to the destination device descriptor structure where
- * the read data is to be stored.
+ * \param[out] ConfigNumber Pointer to a location where the retrieved configuration index should be stored.
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
*/
- uint8_t USB_Host_GetDeviceDescriptor(void* const DeviceDescriptorPtr) ATTR_NON_NULL_PTR_ARG(1);
+ uint8_t USB_Host_GetDeviceConfiguration(uint8_t* const ConfigNumber) ATTR_NON_NULL_PTR_ARG(1);
- /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the string descriptor
- * of the specified index. This can be used to easily retrieve string descriptors from the device by
- * index, after the index is obtained from the Device or Configuration descriptors.
+ /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the descriptor of the
+ * specified type and index.
*
* \note After this routine returns, the control pipe will be selected.
*
* \ingroup Group_PipeControlReq
*
- * \param[in] Index Index of the string index to retrieve.
- * \param[out] Buffer Pointer to the destination buffer where the retrieved string descriptor is
- * to be stored.
- * \param[in] BufferLength Maximum size of the string descriptor which can be stored into the buffer.
+ * \param[in] Type Type of descriptor to retrieve, a value from the \ref USB_DescriptorTypes_t enum.
+ * \param[in] Index Index of the descriptor to retrieve.
+ * \param[out] Buffer Pointer to the destination buffer where the retrieved string descriptor is to be stored.
+ * \param[in] BufferLength Maximum size of the string descriptor which can be stored into the buffer.
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
*/
- uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
- void* const Buffer,
- const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(2);
+ uint8_t USB_Host_GetDescriptor(const uint8_t Type,
+ const uint8_t Index,
+ void* const Buffer,
+ const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(3);
/** Retrieves the current feature status of the attached device, via a GET STATUS standard request. The
* retrieved feature status can then be examined by masking the retrieved value with the various
- * FEATURE_* masks for bus/self power information and remote wakeup support.
+ * \c FEATURE_* masks for bus/self power information and remote wakeup support.
*
* \note After this routine returns, the control pipe will be selected.
*
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
*/
- uint8_t USB_Host_ClearPipeStall(const uint8_t EndpointAddress);
+ uint8_t USB_Host_ClearEndpointStall(const uint8_t EndpointAddress);
/** Selects a given alternative setting for the specified interface, via a SET INTERFACE standard request to
* the attached device.
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
*/
uint8_t USB_Host_SetInterfaceAltSetting(const uint8_t InterfaceIndex,
- const uint8_t AltSetting);
+ const uint8_t AltSetting);
+
+
+ /** Retrieves the current alternative setting for the specified interface, via a GET INTERFACE standard request to
+ * the attached device.
+ *
+ * \note After this routine returns, the control pipe will be selected.
+ *
+ * \ingroup Group_PipeControlReq
+ *
+ * \param[in] InterfaceIndex Index of the interface whose alternative setting is to be altered.
+ * \param[out] AltSetting Pointer to a location where the retrieved alternative setting value should be stored.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
+ */
+ uint8_t USB_Host_GetInterfaceAltSetting(const uint8_t InterfaceIndex,
+ uint8_t* const AltSetting) ATTR_NON_NULL_PTR_ARG(2);
+
+ /* Inline Functions: */
+ /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the device descriptor.
+ * This can be used to easily retrieve information about the device such as its VID, PID and power
+ * requirements. This is a convenience wrapper for \ref USB_Host_GetDescriptor().
+ *
+ * \note After this routine returns, the control pipe will be selected.
+ *
+ * \ingroup Group_PipeControlReq
+ *
+ * \param[out] DeviceDescriptorPtr Pointer to the destination device descriptor structure where
+ * the read data is to be stored.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
+ */
+ static inline uint8_t USB_Host_GetDeviceDescriptor(USB_Descriptor_Device_t* const DeviceDescriptorPtr) ATTR_NON_NULL_PTR_ARG(1);
+ static inline uint8_t USB_Host_GetDeviceDescriptor(USB_Descriptor_Device_t* const DeviceDescriptorPtr)
+ {
+ return USB_Host_GetDescriptor(DTYPE_Device, 0, DeviceDescriptorPtr, sizeof(USB_Descriptor_Device_t));
+ }
+
+ /** Sends a GET DESCRIPTOR standard request to the attached device, requesting the string descriptor
+ * of the specified index. This can be used to easily retrieve string descriptors from the device by
+ * index, after the index is obtained from the Device or Configuration descriptors. This is a convenience
+ * wrapper for \ref USB_Host_GetDescriptor().
+ *
+ * \note After this routine returns, the control pipe will be selected.
+ *
+ * \ingroup Group_PipeControlReq
+ *
+ * \param[in] Index Index of the string descriptor to retrieve.
+ * \param[out] Buffer Pointer to the destination buffer where the retrieved string descriptor is
+ * to be stored.
+ * \param[in] BufferLength Maximum size of the string descriptor which can be stored into the buffer.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
+ */
+ static inline uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
+ void* const Buffer,
+ const uint8_t BufferLength) ATTR_NON_NULL_PTR_ARG(2);
+ static inline uint8_t USB_Host_GetDeviceStringDescriptor(const uint8_t Index,
+ void* const Buffer,
+ const uint8_t BufferLength)
+ {
+ return USB_Host_GetDescriptor(DTYPE_String, Index, Buffer, BufferLength);
+ }
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Function Prototypes: */
#if defined(__INCLUDE_FROM_HOSTSTDREQ_C)
+ static uint8_t USB_Host_SendControlRequest_PRV(void* const BufferPtr);
static uint8_t USB_Host_WaitForIOS(const uint8_t WaitType);
#endif
#endif
projects / pub / USBasp.git / blobdiff