When working with microcontrollers, thread safety is an important concern. Thread safety ensures that concurrent access to resources is synchronized correctly and that data integrity is maintained. Fortunately, there are ways to make sure your microcontroller applications remain thread-safe while still providing a good user experience.   One way to ensure thread safety when working with microcontrollers is to use mutexes. A mutex (or mutual exclusion) is a lock that prevents multiple threads from accessing the same resource at the same time. This helps prevent race conditions, which can cause unpredictable application behavior and unexpected results. To use a mutex in your program, you must first declare it as a global variable and then acquire the lock before executing any critical sections of code. Once acquired, no other threads will be able to enter the critical section until the lock is released or expired.   Atomic Classes for Thread Safety   Another way to achieve thread safety when working with microcontrollers is by using atomic classes in the Java programming language. These classes help prevent race conditions by ensuring that all operations are performed sequentially and without interruption from other threads. The set of atomic classes includes AtomicInteger, AtomicLong, AtomicBoolean and AtomicReference, all of which provide thread-safe methods for performing operations on variables or objects within your application. For example, if you need to increment an integer value in a multi-threaded environment, then you can use the AtomicInteger class instead of having to manually synchronize each thread’s access to the value.