A Traffic light controller implemented on an FPGA using HDL (Hardware Description Language) is a digital system that controls the timing and sequencing of traffic lights at an intersection. The FPGA serves as a hardware platform to implement the controller, while HDL is used to describe the hardware behavior and functionality.
The controller receives inputs from sensors and switches, such as pedestrian buttons, and uses a state machine to determine the appropriate light sequence for each phase of the intersection. The controller then drives the traffic lights using output pins on the FPGA.
Implementing a traffic light controller on an FPGA offers several advantages, including high flexibility and programmability, real-time performance, and low power consumption. Moreover, using HDL enables the designer to easily modify and optimize the controller's behavior, making it an ideal solution for a wide range of traffic control applications.