Traffic light controller
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Design and Developed a traffic light controller using FPGA. Team Members: Ryan Bern Oliver Chang Quyen Vu FPGA Design at Cal Poly Pomona ETE4451 Instructor: Scott Boskovich
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Traffic light controller
- 1. Traffic Light Controller Ryan Berns, Oliver Chang, Quyen Vu Cal Poly Pomona Electronic Systems Engineering Technology
- 2. Objective ● Develop a traffic light controller with congestion monitoring for more efficient traffic flow ● Build a physical demo to test our HDL
- 3. Approach ● FPGA board: Nexys A7 ● Pushbuttons will be used to simulate the traffic flow ● 7-segment display rows (top, middle, bottom) will be used for traffic lights (red, yellow, green)
- 5. Ring Approach ● The approach we used to design our state machine. ● Each number represents a lane on a street. ○ Opposite pairs will be grouped into one state.
- 7. State Machine State North Left - South Left North Straight - South Straight West Left - East Left West Straight - East Straight DEFAUL T RED RED RED RED S0 GREEN/YELLOW RED RED RED S1 RED GREEN/YELLOW RED RED S2 RED RED GREEN/YELLOW RED S3 RED RED RED GREEN/YELLOW
- 8. TOP Module Instantiation of submodules
- 9. Counter Submodule ● State Counter ● Button will lower the duration of state
- 10. Button Counter Submodule - Increments the count when the button is pressed and released (low to high) - Count resets when done = 1 - Occurs when the next state begins - Prevents carryover from one state to the next
- 11. Queue Module
- 12. State Machine Submodule ● The state machine for the traffic light does not move on until it receives a done count signal from the counter module. ● When the it receives the done signal, it resets the counter and moves on to the next state.
- 13. LED Module ● This module drives the output for the 7 segment display as well as assigns lights for each traffic light. ● Depending on the state of the traffic light, it assigns the lights to the correct 7 segment displays.
- 14. TOP Test Bench
Editor's Notes
- Ryan
- Ryan
- Oliver
- Oliver
- Quyen
- Quyen 20sec each Button will cut the time in half
- Quyen
- Quyen
- Quyen
- Ryan
- Ryan
- Oliver
- Oliver
- Oliver