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2026-11-04 11:32:14 +02:00
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The files in this directory structure are automatically generated and managed by Vivado. Editing these files is not recommended.
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## This file is a general .xdc for the Spartan-7 Boolean Board
### Clock Signal
set_property -dict { PACKAGE_PIN F14 IOSTANDARD LVCMOS33 } [get_ports { clk }];
create_clock -add -name sys_clk -period 10.00 -waveform {0 5} [get_ports { clk }];
### 7-Segment Display
set_property -dict { PACKAGE_PIN D7 IOSTANDARD LVCMOS33 } [get_ports { a }];
set_property -dict { PACKAGE_PIN C5 IOSTANDARD LVCMOS33 } [get_ports { b }];
set_property -dict { PACKAGE_PIN A5 IOSTANDARD LVCMOS33 } [get_ports { c }];
set_property -dict { PACKAGE_PIN B7 IOSTANDARD LVCMOS33 } [get_ports { d }];
set_property -dict { PACKAGE_PIN A7 IOSTANDARD LVCMOS33 } [get_ports { e }];
set_property -dict { PACKAGE_PIN D6 IOSTANDARD LVCMOS33 } [get_ports { f }];
set_property -dict { PACKAGE_PIN B5 IOSTANDARD LVCMOS33 } [get_ports { g }];
set_property -dict { PACKAGE_PIN A6 IOSTANDARD LVCMOS33 } [get_ports { dp }];
set_property -dict { PACKAGE_PIN D5 IOSTANDARD LVCMOS33 } [get_ports { an0 }];
set_property -dict { PACKAGE_PIN C4 IOSTANDARD LVCMOS33 } [get_ports { an1 }];
set_property -dict { PACKAGE_PIN C7 IOSTANDARD LVCMOS33 } [get_ports { an2 }];
set_property -dict { PACKAGE_PIN A8 IOSTANDARD LVCMOS33 } [get_ports { an3 }];
### Button(s)
set_property -dict { PACKAGE_PIN J2 IOSTANDARD LVCMOS33 } [get_ports { reset }];
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`timescale 1ns / 1ps
module tb;
reg [3:0] char;
wire [6:0] LED;
integer i;
LEDdecoder dut (
.char(char),
.LED (LED)
);
initial begin
$dumpfile("wave.vcd");
$dumpvars(0, tb);
for (i = 0; i < 16; i = i + 1) begin
char = i;
#10;
$display("char=%h LED{a..g}=%b", char, LED);
end
$finish;
end
endmodule
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`timescale 1ns / 1ps
module tb_driver;
reg clk = 0;
reg reset = 1;
wire an3, an2, an1, an0;
wire a, b, c, d, e, f, g, dp;
FourDigitLEDdriver dut (
.clk(clk),
.reset(reset),
.an3(an3),
.an2(an2),
.an1(an1),
.an0(an0),
.a(a),
.b(b),
.c(c),
.d(d),
.e(e),
.f(f),
.g(g),
.dp(dp)
);
always #5 clk = ~clk; // 100 MHz
wire [3:0] low = ~{an3, an2, an1, an0};
always @(low)
if ((low & (low - 1)) != 0)
$display("ERROR t=%0t: επικάλυψη ανόδων, an=%b", $time, {an3, an2, an1, an0});
always @(an3 or an2 or an1 or an0)
$display(
"t=%0t state=%b digit=%h an=%b%b%b%b seg(abcdefg)=%b%b%b%b%b%b%b",
$time,
dut.state,
dut.digit,
an3,
an2,
an1,
an0,
a,
b,
c,
d,
e,
f,
g
);
initial begin
$dumpfile("wave_driver.vcd");
$dumpvars(0, tb_driver);
#100 reset = 0;
#20000 $finish;
end
endmodule
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module FourDigitLEDdriver (
input clk,
input reset,
output an3,
an2,
an1,
an0,
output a,
b,
c,
d,
e,
f,
g,
dp
);
wire clk_fb, clk_slow_raw, clk_slow, locked;
MMCME2_BASE #(
.BANDWIDTH ("OPTIMIZED"),
.CLKIN1_PERIOD (10.0), // 100 MHz
.DIVCLK_DIVIDE (1),
.CLKFBOUT_MULT_F (6.0), // VCO = 600 MHz
.CLKOUT1_DIVIDE (120), // 600/120 = 5 MHz
.CLKFBOUT_PHASE (0.0),
.CLKOUT1_PHASE (0.0),
.CLKOUT1_DUTY_CYCLE(0.5),
.STARTUP_WAIT ("FALSE")
) MMCME2_BASE_inst (
.CLKIN1(clk),
.CLKFBIN(clk_fb),
.CLKFBOUT(clk_fb),
.CLKOUT1(clk_slow_raw),
.LOCKED(locked),
.PWRDWN(1'b0),
.RST(reset)
);
BUFG bufg_slow (
.I(clk_slow_raw),
.O(clk_slow)
);
wire rst_int = reset | ~locked;
reg [3:0] state;
always @(posedge clk_slow or posedge rst_int) begin
if (rst_int) state <= 4'b1111;
else state <= state - 1; // one step per 200 ns
end
reg [3:0] an;
reg [3:0] digit;
always @(*) begin
case (state)
4'b1110: an = 4'b0111;
4'b1010: an = 4'b1011;
4'b0110: an = 4'b1101;
4'b0010: an = 4'b1110;
default: an = 4'b1111;
endcase
end
always @(*) begin
case (state)
4'b0000, 4'b1111, 4'b1110, 4'b1101: digit = 4'h0;
4'b1100, 4'b1011, 4'b1010, 4'b1001: digit = 4'h1;
4'b1000, 4'b0111, 4'b0110, 4'b0101: digit = 4'h2;
default: digit = 4'h3;
endcase
end
wire [6:0] LED;
LEDdecoder LEDdecoder_inst (
.char(digit),
.LED (LED)
);
assign {an3, an2, an1, an0} = an;
assign a = ~LED[6];
assign b = ~LED[5];
assign c = ~LED[4];
assign d = ~LED[3];
assign e = ~LED[2];
assign f = ~LED[1];
assign g = ~LED[0];
assign dp = 1'b1;
endmodule
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module LEDdecoder (
input [3:0] char,
output [6:0] LED
);
assign LED = (char == 4'h0) ? 7'b1111110 : // 0
(char == 4'h1) ? 7'b0110000 : // 1
(char == 4'h2) ? 7'b1101101 : // 2
(char == 4'h3) ? 7'b1111001 : // 3
(char == 4'h4) ? 7'b0110011 : // 4
(char == 4'h5) ? 7'b1011011 : // 5
(char == 4'h6) ? 7'b1011111 : // 6
(char == 4'h7) ? 7'b1110000 : // 7
(char == 4'h8) ? 7'b1111111 : // 8
(char == 4'h9) ? 7'b1111011 : // 9
(char == 4'hA) ? 7'b1110111 : // A
(char == 4'hB) ? 7'b0011111 : // B
(char == 4'hC) ? 7'b1001110 : // C
(char == 4'hD) ? 7'b0111101 : // D
(char == 4'hE) ? 7'b1001111 : // E
(char == 4'hF) ? 7'b1000111 : // F
7'b0000000;
endmodule
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