#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_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.
+ *
+ * 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.
+ *
+ * \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_SendControlRequest(void* const BufferPtr);
+ /** Sends a SET CONFIGURATION standard request to the attached device, with the given configuration index.
+ *
+ * This routine will automatically update the \ref USB_HostState and \ref USB_Host_ConfigurationNumber
+ * state variables according to the given function parameters and the result of the request.
+ *
+ * \note After this routine returns, the control pipe will be selected.
+ *
+ * \ingroup Group_PipeControlReq
+ *
+ * \param[in] ConfigNumber Configuration index to send to the device.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
+ */
+ 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.
+ *
+ * \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.
+ */
+ uint8_t USB_Host_GetDeviceDescriptor(void* const DeviceDescriptorPtr) 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.
+ *
+ * \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.
+ *
+ * \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);
+
+ /** 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.
+ *
+ * \note After this routine returns, the control pipe will be selected.
+ *
+ * \ingroup Group_PipeControlReq
+ *
+ * \param[out] FeatureStatus Location where the retrieved feature status should be stored.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
+ */
+ uint8_t USB_Host_GetDeviceStatus(uint8_t* const FeatureStatus) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** Clears a stall condition on the given pipe, via a CLEAR FEATURE standard request to the attached device.
+ *
+ * \note After this routine returns, the control pipe will be selected.
+ *
+ * \ingroup Group_PipeControlReq
+ *
+ * \param[in] EndpointAddress Address of the endpoint to clear, including the endpoint's direction.
+ *
+ * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
+ */
+ 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.
+ *
+ * \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[in] AltSetting Index of the interface's alternative setting which is to be selected.
+ *
+ * \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);
+
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Enums: */
projects / pub / USBasp.git / blobdiff