FSM — Pedestrian Light

Intermediate

00:00

01General Operation

State machine for a pedestrian crossing light, clocked at 1 Hz.

3 states: green, orange, red.

Green: stays active until pedestrian button is pressed and minimum 10 seconds have elapsed.
Orange: lasts 2 seconds.
Red: lasts 8 seconds, then back to green.

Reset is asynchronous and active-high.

02Interface

Signal	Direction	Width	Description
`i_clk`	Input	1 bit	System clock (1 Hz)
`i_reset`	Input	1 bit	Active-high async reset
`i_btn`	Input	1 bit	Pedestrian button
`o_vert`	Output	1 bit	Green light
`o_orange`	Output	1 bit	Orange light
`o_rouge`	Output	1 bit	Red light

Chargement…