omarnabih99/egfwd-on-demand-traffic-lights

Embedded Systems project based on ATmega32 Microcontroller in Embedded Systems Professional track provided by Udacity and egfwd.

On-Demand-Traffic-Lights

Embedded Systems project based on ATmega32 Microcontroller in Embedded Systems Professional track provided by Udacity and egfwd. The project was developed using Eclipse IDE and simulated using Proteus Simulator.

System Description

-Traffic lights normally consist of three signals, transmitting meaning to drivers and riders through colors and symbols including arrows and bicycles.

-The system consists of 6 LEDs which are red, yellow, and green for both pedestrians and cars, arranged vertically or horizontally in that order in addition to an on-demand crosswalk button.

-Crosswalk button lets the signal operations know that someone is planning to cross the street, so the light adjusts, giving the pedestrian enough time to get across.

System Logic

-MCAL drivers which are DIO, TIMERS, and INTERRUPTS, and ECUAL drivers which are LED and BUTTON were implemented from scratch.

-The project is developed using the full static architecture and follows the SOLID principles.

-The system consists of 6 LEDs, a push button, and AVR ATmega32 Microcontroller.

-Cars' traffic lights switches every 5 seconds. Same as for pedestrians' traffic lights but with inverted colors.

-The system is built so that to gurantee pedestrians' safety as they are allowed to cross the road if and only if the cars' traffic is red.

File Structure

-The project is divided into layers : MCAL, ECUAL, and Application layer.

-a UTILITIES Folder is added to define standard types, common used macros, and microcontroller configurations.

-The image below explains the file structure of the whole project.

System Constraints and Flow Chart

You can find all system details and flow chart here.