Design Patterns for Embedded Systems in C

Chapter 5 Design Patterns for State Machines

Chapter Outline

1. Oh Behave! 259

2. Basic State Machine Concepts 261

   1. OR-States 263

   2. AND-States 265

   3. Special Stuff: Timeouts, Conditionals, and More 267

   4. Synchronous versus Asynchronous? 270

3. Single Event Receptor Pattern 274

   1. Abstract 274

   2. Problem 274

   3. Pattern Structure 274

   4. Collaboration Roles 275

      1. Event 275

      2. EventType 275

      3. Mutex 276

      4. TokenizerAsyncSingleReceptor 276

      5. TokenizerSyncSingleReceptor 277

      6. TSRClient 277

      7. TSREventQueue 277

      8. TSTATE 278

      9. TSUBSTATE 278

   5. Consequences 278

   6. Implementation Strategies 278

   7. Related Patterns 278

   8. Example 278

4. Multiple Event Receptor Pattern 287

   1. Abstract 287

   2. Problem 287

   3. Pattern Structure 288

   4. Collaboration ...