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FreeRTOS_CreateSocketSet() [FreeRTOS+TCP API Reference] FreeRTOS_sockets.h SocketSet_t FreeRTOS_CreateSocketSet()( unsigned BaseType_t uxEventQueueLength ); Create a socket set for use with the FreeRTOS_select() function. ipconfigSUPPORT_SELECT_FUNCTION must be set to 1 in FreeRTOSIPConfig.h for FreeRTOS_CreateSocketSet() to be available. Socket Sets allow an application RTOS task to block on multiple sockets simultaneously. To use a socket set: Create a socket set by calling FreeRTOS_CreateSocketSet(). A socket set is equivalent to the Berkeley sockets fd_set type. Add one or more sockets to the set using calls to FreeRTOS_FD_SET(). FreeRTOS_FD_SET() is equivalent to the Berkeley sockets FD_SET() macro. Call FreeRTOS_Select() to test the sockets in the set to see if any of the sockets have an event pending. If FreeRTOS_select() returns a non-zero value then check all sockets in the set using a call to FreeRTOS_FD_ISSET() to determine which events are pending. The FreeRTOS_FD_CLR() API function is used to remove a socket from a socket set. Parameters: uxEventQueueLength   A receive event is generated each time a socket in the socket set receives data. uxEventQueueLength sets the maximum number of receive events that can be stored by the socket set at any one time. If a packet is received by a socket that is a member of a socket set, and the socket set's event queue is full, then the packet will be dropped. Returns: If the socket set was created then a handle to the created socket set is returned. If the socket set was not created (because there was insufficient FreeRTOS heap memory available) then NULL is returned. Example usage: See the example on the FreeRTOS_select() documentation page. [ Back to the top ]    [ About FreeRTOS ]    [ Privacy ]    [ FreeRTOS Labs Sitemap ]    [ Main FreeRTOS Sitemap ]    [ ] Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.