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exp1_traffic.v (1/5)
4
module exp1_traffic (
clk,
rst_n,
pause,
HEX0
);
//==== parameter definition ===============================
// for finite state machine
parameter S_NORMAL = 1'd0;
parameter S_PAUSE = 1'd1;
// for countdown
parameter C_PERIOD = 4'd9;
//==== in/out declaration ==================================
//-------- input ---------------------------
input clk;
input rst_n; // reset signal (button)
input pause; // pause signal (switch)
//-------- output --------------------------------------
output [6:0] HEX0;
It is a 10 seconds
countdown system.
The countdown system can be
paused by turning on the switch.
module name = file name