EC25C14 Microcontroller and Peripheral Interfacing Laboratory – Semester IV – ECE / ElecComp – R-2025

Subject Code & Name: EC25C14 – Microcontroller and Peripheral Interfacing Laboratory

Regulation: R-2025

Semester: IV (Fourth Semester)

Branch: B.E. Electronics and Communication Engineering (ECE) / B.E. Electronics and Computer Engineering (ElecComp)

Credits / L-T-P: 2 Credits | L-T-P: 0-0-4

Course Objectives

• To develop practical skills in embedded system programming, debugging, peripheral interfacing, interrupt handling, DMA, security mechanisms, and UART communication using ARM-based microcontrollers and development tools.

Full Unit-wise Syllabus

List of Experiments

• Understand and explore the Integrated Development Environment (IDE) of a particular family of Microcontrollers and try to create a project and compile for a 32 bit environment.
• Write an embedded system program using a infinite while loop, perform a simple mathematical computation, and understand the compilation process including the compiler used, output generated like elf file, map file, lst file (if generated) and understand address mapping of the functions.
• Write an embedded system program using an infinite while loop, perform a simple Mathematical computation, and demonstrate single stepping, watch and try modifying the variables contents in data memory region and examine the outcome. Also examine the assembly code of the C program.
• Write a C program function to swap two number using call by value and call by reference. Examine the difference of these functions in assembly code, and explain the difference the way code is generated internally on any ARM 32bit IDE.
• a) Write a C program function and demonstrate the behaviour of post and pre- increment of a variable with appropriate values. Examine and explain the behaviour with a right example on any ARM 32bit IDE. b) Describe the purpose of the volatile qualifier in C. Using an example program, illustrate how the behaviour differs when a variable is declared with and without volatile, and examine the generated assembly code to justify the difference on any ARM 32bit IDE.
• Train students to read datasheets and identify pin functions Identify LED pin mapping. Distinguish analog vs digital pins Introduce basic GPIO programming and timing via software loops. Toggle LEDs with 500 ms delay using for-loops
• Configure the timer registers to generate a 500 ms delay and use the hardware timer to toggle an LED. Explain how precise delays are achieved when compared to hardware timers Vs software delays
• Generate a 1ms interrupts, blink LED by using sysTick for system programming. Ask questions about sysTick and its significance.
• Transfer data from a specified memory to UART using DMA. Demonstrate with a program.
• Demonstrate access violation between secure/non-secure zones and show valid operations within same zone.
• Explain how a switch state is read using GPIO pins and displayed using an LED. Describe the switch debouncing problem and the methods used to handle it.
• UART Polling Mode, Configure UART on at 9600 bps, transmit/receive characters, and echo back
• UART Interrupt Mode, Configure UART on at 9600 bps, transmit “ ABC”, using interrupt mode. Ask Students to explain about NVIC and its working on ARM processor.

Tasks

• T1 Understand and explore the Integrated Development Environment (IDE) of a particular ARM 32-bit microcontroller family and create a project, compile it, and analyze the build output.
• T2 Write an embedded system program using an infinite while loop to perform a simple mathematical computation, and analyze the compilation process including ELF, MAP, and LST files along with function address mapping.
• T3 Write a C program to demonstrate debugging techniques including single stepping, watch window usage, and modification of variables in data memory, and examine the corresponding assembly code.
• T4 Develop embedded C programs to implement GPIO-based LED control using software delay and hardware timer (500 ms delay), and compare accuracy between software and hardware timing methods.
• T5 Configure UART communication at 9600 bps and implement both polling and interrupt-based transmission/reception, including echo functionality and analysis of NVIC-based interrupt handling.

Course Outcomes (COs)

• CO1: Describe the architecture, development environment, compilation process, memory organization, and debugging features of ARM-based microcontrollers and embedded systems.
• CO2: Analyze embedded C programs involving functions, pointers, variable qualifiers, memory access, and assembly-level execution to understand software–hardware interaction.
• CO3: Implement and evaluate GPIO, timer, SysTick, and interrupt-based applications for real-time embedded system operation.
• CO4: Design and develop peripheral interfacing applications using UART, DMA, and interrupt-driven communication techniques for efficient embedded system communication.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 60% | End Semester Lab Examinations 40%
• Internal methodology: Evaluation of Students’ work, Observation, Record.

Source: Official Anna University – B.E. Electronics and Communication Engineering R-2025 Syllabus
Last Updated: October 2026