MCUXpresso SDK Documentation

freertos_sem#

Overview#

This document explains the freertos_sem example, what to expect when running it and a brief introduction to the API. The freertos_sem example code shows how semaphores works. Two different tasks are synchronized in bilateral rendezvous model.

The example uses four tasks. One producer_task and three consumer_tasks. The producer_task starts by creating of two semaphores (xSemaphore_producer and xSemaphore_consumer). These semaphores control access to virtual item. The synchronization is based on bilateral rendezvous pattern. Both of consumer and producer must be prepared to enable transaction.

Running the demo#

After the board is flashed the Tera Term will show debug console output.

Example output: Producer_task created. Consumer_task 0 created. Consumer_task 1 created. Consumer_task 2 created. Consumer number: 0 Consumer 0 accepted item. Consumer number: 1 Consumer number: 2 Producer released item. Consumer 0 accepted item. Producer released item. Consumer 1 accepted item. Producer released item. Consumer 2 accepted item.

Supported Boards#