Download diglab1.zip.
This lab illustrates the control of the LEDs, switches, and seven-segment displays.
diglab1.v
module diglab1( // Clock Input (50 MHz) input CLOCK_50, // Push Buttons input [3:0] KEY, // DPDT Switches input [17:0] SW, // 7-SEG Displays output [6:0] HEX0, HEX1, HEX2, HEX3, HEX4, HEX5, HEX6, HEX7, // LEDs output [8:0] LEDG, // LED Green[8:0] output [17:0] LEDR, // LED Red[17:0] // GPIO Connections inout [35:0] GPIO_0, GPIO_1 ); // set all inout ports to tri-state assign GPIO_0 = 36'hzzzzzzzzz; assign GPIO_1 = 36'hzzzzzzzzz; // Connect dip switches to red LEDs assign LEDR[17:0] = SW[17:0]; // turn off green LEDs assign LEDG[8:0] = 0; reg [15:0] A; // map to 7-segment displays hex_7seg dsp0(A[3:0],HEX0); hex_7seg dsp1(A[7:4],HEX1); hex_7seg dsp2(A[11:8],HEX2); hex_7seg dsp3(A[15:12],HEX3); wire [6:0] blank = 7'b111_1111; // blank remaining digits assign HEX4 = blank; assign HEX5 = blank; assign HEX6 = blank; assign HEX7 = blank; // control (set) value of A, signal with KEY3 always @(negedge KEY[3]) A <= SW[15:0]; endmodule
hex_7seg.v
module hex_7seg(hex_digit,seg); input [3:0] hex_digit; output [6:0] seg; reg [6:0] seg; // seg = {g,f,e,d,c,b,a}; // 0 is on and 1 is off always @ (hex_digit) case (hex_digit) 4'h0: seg = 7'b1000000; 4'h1: seg = 7'b1111001; // ---a---- 4'h2: seg = 7'b0100100; // | | 4'h3: seg = 7'b0110000; // f b 4'h4: seg = 7'b0011001; // | | 4'h5: seg = 7'b0010010; // ---g---- 4'h6: seg = 7'b0000010; // | | 4'h7: seg = 7'b1111000; // e c 4'h8: seg = 7'b0000000; // | | 4'h9: seg = 7'b0011000; // ---d---- 4'ha: seg = 7'b0001000; 4'hb: seg = 7'b0000011; 4'hc: seg = 7'b1000110; 4'hd: seg = 7'b0100001; 4'he: seg = 7'b0000110; 4'hf: seg = 7'b0001110; endcase endmodule
fit.summary
Fitter Status : Successful - Tue Jul 03 14:01:38 2007 Quartus II Version : 6.0 Build 178 04/27/2006 SJ Full Version Revision Name : diglab1 Top-level Entity Name : diglab1 Family : Cyclone II Device : EP2C35F672C6 Timing Models : Final Total logic elements : 28 / 33,216 ( < 1 % ) Total registers : 16 Total pins : 178 / 475 ( 37 % ) Total virtual pins : 0 Total memory bits : 0 / 483,840 ( 0 % ) Embedded Multiplier 9-bit elements : 0 / 70 ( 0 % ) Total PLLs : 0 / 4 ( 0 % )
tan.summary
-------------------------------------------------------------------------------------- Timing Analyzer Summary -------------------------------------------------------------------------------------- Type : Worst-case tsu Slack : N/A Required Time : None Actual Time : 4.674 ns From : SW[15] To : A[15] From Clock : -- To Clock : KEY[3] Failed Paths : 0 Type : Worst-case tco Slack : N/A Required Time : None Actual Time : 7.449 ns From : A[6] To : HEX1[5] From Clock : KEY[3] To Clock : -- Failed Paths : 0 Type : Worst-case tpd Slack : N/A Required Time : None Actual Time : 9.870 ns From : SW[15] To : LEDR[15] From Clock : -- To Clock : -- Failed Paths : 0 Type : Worst-case th Slack : N/A Required Time : None Actual Time : 0.494 ns From : SW[3] To : A[3] From Clock : -- To Clock : KEY[3] Failed Paths : 0 Type : Total number of failed paths Slack : Required Time : Actual Time : From : To : From Clock : To Clock : Failed Paths : 0 --------------------------------------------------------------------------------------
Maintained by John Loomis, last updated Tue Jul 03 14:05:11 2007