Module 5: Developing Embedded Device Drivers (2 hours)

• Introduction to Linux Device Drivers.
• Working with hardware registers and memory mapping.
• Writing and Registering Character Device Drivers.

Lab: Writing a basic GPIO driver for an embedded board.

Module 6: Interrupt Handling and Synchronization (2 hours)

• Interrupt Request (IRQ) handling.
• Working with Bottom Halves, Tasklets, and Workqueues.
• Synchronization Primitives: Spinlocks, Semaphores, Mutexes.

Lab: Implementing interrupt handling for GPIO inputs.

Module 7: Kernel Debugging and Optimization (2 hours)

• Debugging Tools: GDB, KGDB, ftrace, perf.
• Diagnosing Kernel Crashes and Kernel Oops.
• Performance Profiling using perf.

Lab: Debugging a kernel crash using ftrace and dmesg.

Module 8: Integrating Kernel Modules with User Space (1 hour)

• Exposing Kernel Modules via /proc and /sys.
• Communicating between Kernel Modules and User Space.
• Practical Examples: GPIO, I2C, and SPI Devices.

Lab: Creating a sysfs entry for controlling an LED.