stream_buffer.h BaseType_t xStreamBufferIsFull( StreamBufferHandle_t xStreamBuffer );
BaseType_t xStreamBufferIsFull( StreamBufferHandle_t xStreamBuffer );
Queries a stream buffer to see if it is full. A stream buffer is full if it does not have any free space, and therefore cannot accept any more data.
Stream buffer functionality is enabled by including the FreeRTOS/source/stream_buffer.c source file in the build.