Module Atmega128
This project was developed as part of a university coursework, focusing on embedded systems programming and hardware-software integration. It demonstrates advanced use of the ATmega128 microcontroller to control a motor with encoder feedback, a potentiometer for speed adjustment, a 4-digit 7-segment display module, and buttons for user input. The project leverages both C and Assembly languages to achieve optimized performance and precise control.
- Motor Control: Implements precise speed and direction control using encoder feedback.
- Speed Adjustment: Uses a potentiometer to dynamically adjust motor speed.
- 7-Segment Display: Displays real-time motor speed and system status on a 4-digit 7-segment display.
- User Interaction: Buttons for start, stop, and mode selection.
- Developed for the ATmega128 microcontroller, demonstrating its advanced features such as timer/counter, ADC, and interrupt handling.
- Real-time task management and optimized performance through a combination of C and Assembly programming.
- Seamless integration of hardware components for synchronized operation.
- Initialization: Sets up the microcontroller peripherals, including ADC for potentiometer input, timers for PWM generation, and interrupts for encoder handling.
- Main Loop:
- Reads potentiometer input to determine desired motor speed.
- Updates the PWM signal to control motor speed dynamically.
- Displays the current speed on the 7-segment display.
- Handles button presses for mode selection and system control.
- Handles low-level, time-critical tasks such as:
- Encoder pulse counting for precise speed measurement.
- Direct control of 7-segment display multiplexing.
- Efficient interrupt service routines to minimize latency.
-
Motor Control:
- The motor's speed is adjusted in real-time using a potentiometer connected to the ADC of the ATmega128.
- Feedback from the motor's encoder is processed to ensure accurate speed regulation.
-
7-Segment Display:
- Displays the current motor speed and operational status.
- The display is updated dynamically through multiplexing controlled by the microcontroller.
-
Buttons:
- Allow the user to start, stop, and switch between operational modes.
This project showcases principles and techniques applicable to various fields, including:
- Robotics and automation systems requiring precise motor control.
- Real-time embedded systems for industrial machinery.
- Educational demonstrations of embedded system design and microcontroller programming.
Through this project, students gained hands-on experience with:
- Programming in both C and Assembly for embedded systems.
- Interfacing with hardware components such as motors, encoders, and 7-segment displays.
- Utilizing the advanced features of the ATmega128 microcontroller.
- Designing and debugging real-time systems.
