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project2.v
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project2.v
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`timescale 1ns / 1ps
///////////////////////////////////////////////////////
// NAME : Ankit Sarraf
// CREATE DATE : 09:45:29 June 26, 2014
// PROJECT NAME : Guessing Game / Electronic Lock
// MODULE NAME : project2
///////////////////////////////////////////////////////
module project2(clock, switches, buttons, leds, cathods, anodes);
input clock;
input [6:0] switches;
input [3:0] buttons;
output reg [7:0] leds = 8'b00000000;
output reg [7:0] cathods;
output reg [3:0] anodes;
// Variables to Maintain the clock count
integer count = 0;
integer myCount = 0;
// Player 1 => 0
// Player 2 => 1
integer player = 1'b0;
// Find if default message has tl be shown to the players
integer defaultMessage = 1'b1;
// tempn represents the 'nth' Anode in 7-Segement display
integer temp3 = 8'b11111111;
integer temp2 = 8'b11111111;
integer temp1 = 8'b11111111;
integer temp0 = 8'b11111111;
// Initialized all the 7-Segment displays to show no value
// To keep the backup of the numbers Player 1 entered
integer backupValue0 = 0;
integer backupValue1 = 0;
integer backupValue2 = 0;
integer backupValue3 = 0;
// To keep record of the numbers existing player entered
integer finalValue0 = 0;
integer finalValue1 = 0;
integer finalValue2 = 0;
integer finalValue3 = 0;
integer pressed = 1'b0;
integer checking = 0;
integer flag = 0;
integer attempts = 0;
integer flag_attempts = 1'b1;
always @(posedge clock)
begin
if(checking != 0)
begin
flag = 1;
end
else
begin
flag = 0;
end
if(switches[6] == 1)
begin
if(flag_attempts == switches[6])
begin
attempts = attempts + switches[6];
flag_attempts = 1'b0;
end
end
if(flag == 1)
begin
if(checking == 1)
begin
// Winning Code - Led Blink
if(myCount < 10000000)
begin
leds = 8'b11111111;
end
else if(myCount < 20000000)
begin
leds = 8'b00000000;
end
else
begin
myCount = 0;
end
myCount = myCount + 1;
// Display Number of Attempts
temp3 = 8'b11111111;
temp2 = 8'b11111111;
temp1 = 8'b11111111;
// ASSUMPTION: There are no more than 15 Attempts
case(attempts)
4'h0: temp0 = 8'b11000000;
4'h1: temp0 = 8'b11111001;
4'h2: temp0 = 8'b10100100;
4'h3: temp0 = 8'b10110000;
4'h4: temp0 = 8'b10011001;
4'h5: temp0 = 8'b10010010;
4'h6: temp0 = 8'b10000010;
4'h7: temp0 = 8'b11111000;
4'h8: temp0 = 8'b10000000;
4'h9: temp0 = 8'b10010000;
4'hA: temp0 = 8'b10001000;
4'hb: temp0 = 8'b10000011;
4'hC: temp0 = 8'b11000110;
4'hd: temp0 = 8'b10100001;
4'hE: temp0 = 8'b10000110;
4'hF: temp0 = 8'b10001110;
default: temp0 = 8'b11000000;
endcase
end
else if(checking == 2)
begin
// Guessed LOW
// Set the 7 - Segments to " 2LO"
temp3 = 8'b11111111;
temp2 = 8'b10100100;
temp1 = 8'b11000111;
temp0 = 8'b11000000;
end
else
begin
// Guessed HIGH
// Set the 7 - Segments t0 " 2HI"
temp3 = 8'b11111111;
temp2 = 8'b10100100;
temp1 = 8'b10001001;
temp0 = 8'b11001111;
end
if(switches[5] == 0 && switches[4] == 1 && checking != 1)
begin
// To give Player2 another chance to
// guess correct number
defaultMessage = 0;
checking = 0;
flag_attempts = 1'b1;
end
if(switches[5] == 0 && switches[4] == 0 && checking == 1)
begin
// To start a new game
// Reset Everything
defaultMessage = 1;
checking = 0;
attempts = 0;
flag_attempts = 1'b1;
count = 0;
myCount = 0;
pressed = 0;
player = 0;
leds = 0;
temp0 = 8'b10111111;
temp1 = 8'b10111111;
temp2 = 8'b10111111;
temp3 = 8'b10111111;
backupValue0 = 0;
backupValue1 = 0;
backupValue2 = 0;
backupValue3 = 0;
finalValue0 = 0;
finalValue1 = 0;
finalValue2 = 0;
finalValue3 = 0;
end
end
else
begin
if(switches[5] == 1 && player == 1)
begin
// If Player 2 guesses the correct value
if(finalValue0 == backupValue0 && finalValue1 == backupValue1 &&
finalValue2 == backupValue2 && finalValue3 == backupValue3)
begin
checking = 1;
end
else if((backupValue0 > finalValue0) ||
(backupValue0 == finalValue0 &&
backupValue1 > finalValue1) ||
(backupValue0 == finalValue0 &&
backupValue1 == finalValue1 &&
backupValue2 > finalValue2) ||
(backupValue0 == finalValue0 &&
backupValue1 == finalValue1 &&
backupValue2 == finalValue2 &&
backupValue3 > finalValue3)
)
begin
// LOW Guess
checking = 2;
end
else
begin
// HIGH Guess
checking = 3;
end
end
if(switches[4] != player)
begin
backupValue0 = finalValue0;
backupValue1 = finalValue1;
backupValue2 = finalValue2;
backupValue3 = finalValue3;
finalValue0 = 0;
finalValue1 = 0;
finalValue2 = 0;
finalValue3 = 0;
defaultMessage = 1;
end
// Default Messages which Player selected
if(defaultMessage == 1)
begin
temp3 = 8'b10001100;
temp2 = 8'b11000111;
temp1 = 8'b11111111;
if(switches[4] == 1'b0)
begin
// If switch 4 is in low position
// Set to player 1
player = 0;
temp0 = 8'b11111001;
end
else
begin
// Else set player 2
player = 1;
temp0 = 8'b10100100;
end
end
if(switches[3:0] != 0)
begin
// When first time we make the changes to the sliders
if(defaultMessage == 1)
begin
// Don't show the default message now
defaultMessage = 0;
// Set the 7-Segements to display just 0
temp0 = 8'b11000000;
temp1 = 8'b11000000;
temp2 = 8'b11000000;
temp3 = 8'b11000000;
end
else
begin
if(pressed == 0)
begin
pressed = 1;
case(switches[3:0])
4'h1:
finalValue0 = finalValue0 + buttons[3:0];
4'h2:
finalValue1 = finalValue1 + buttons[3:0];
4'h4:
finalValue2 = finalValue2 + buttons[3:0];
4'h8:
finalValue3 = finalValue3 + buttons[3:0];
endcase
end
else
begin
if(buttons[3:0] == 0)
begin
pressed = 0;
end
end
end
if(finalValue0 > 15)
begin
finalValue0 = 0;
end
if(finalValue1 > 15)
begin
finalValue1 = 0;
end
if(finalValue2 > 15)
begin
finalValue2 = 0;
end
if(finalValue3 > 15)
begin
finalValue3 = 0;
end
case(finalValue0)
4'h0: temp0 = 8'b11000000;
4'h1: temp0 = 8'b11111001;
4'h2: temp0 = 8'b10100100;
4'h3: temp0 = 8'b10110000;
4'h4: temp0 = 8'b10011001;
4'h5: temp0 = 8'b10010010;
4'h6: temp0 = 8'b10000010;
4'h7: temp0 = 8'b11111000;
4'h8: temp0 = 8'b10000000;
4'h9: temp0 = 8'b10010000;
4'hA: temp0 = 8'b10001000;
4'hb: temp0 = 8'b10000011;
4'hC: temp0 = 8'b11000110;
4'hd: temp0 = 8'b10100001;
4'hE: temp0 = 8'b10000110;
4'hF: temp0 = 8'b10001110;
default: temp0 = 8'b11000000;
endcase
case(finalValue1)
4'h0: temp1 = 8'b11000000;
4'h1: temp1 = 8'b11111001;
4'h2: temp1 = 8'b10100100;
4'h3: temp1 = 8'b10110000;
4'h4: temp1 = 8'b10011001;
4'h5: temp1 = 8'b10010010;
4'h6: temp1 = 8'b10000010;
4'h7: temp1 = 8'b11111000;
4'h8: temp1 = 8'b10000000;
4'h9: temp1 = 8'b10010000;
4'hA: temp1 = 8'b10001000;
4'hb: temp1 = 8'b10000011;
4'hC: temp1 = 8'b11000110;
4'hd: temp1 = 8'b10100001;
4'hE: temp1 = 8'b10000110;
4'hF: temp1 = 8'b10001110;
default: temp1 = 8'b11000000;
endcase
case(finalValue2)
4'h0: temp2 = 8'b11000000;
4'h1: temp2 = 8'b11111001;
4'h2: temp2 = 8'b10100100;
4'h3: temp2 = 8'b10110000;
4'h4: temp2 = 8'b10011001;
4'h5: temp2 = 8'b10010010;
4'h6: temp2 = 8'b10000010;
4'h7: temp2 = 8'b11111000;
4'h8: temp2 = 8'b10000000;
4'h9: temp2 = 8'b10010000;
4'hA: temp2 = 8'b10001000;
4'hb: temp2 = 8'b10000011;
4'hC: temp2 = 8'b11000110;
4'hd: temp2 = 8'b10100001;
4'hE: temp2 = 8'b10000110;
4'hF: temp2 = 8'b10001110;
default: temp2 = 8'b11000000;
endcase
case(finalValue3)
4'h0: temp3 = 8'b11000000;
4'h1: temp3 = 8'b11111001;
4'h2: temp3 = 8'b10100100;
4'h3: temp3 = 8'b10110000;
4'h4: temp3 = 8'b10011001;
4'h5: temp3 = 8'b10010010;
4'h6: temp3 = 8'b10000010;
4'h7: temp3 = 8'b11111000;
4'h8: temp3 = 8'b10000000;
4'h9: temp3 = 8'b10010000;
4'hA: temp3 = 8'b10001000;
4'hb: temp3 = 8'b10000011;
4'hC: temp3 = 8'b11000110;
4'hd: temp3 = 8'b10100001;
4'hE: temp3 = 8'b10000110;
4'hF: temp3 = 8'b10001110;
default: temp3 = 8'b11000000;
endcase
end
end
// Strobing
if(count <= 1500)
begin
anodes = 4'b0111;
cathods = temp0;
count = count + 1;
end
else if(count <= 3000)
begin
anodes = 4'b1011;
cathods = temp1;
count = count + 1;
end
else if(count <= 4500)
begin
anodes = 4'b1101;
cathods = temp2;
count = count + 1;
end
else if(count <= 6000)
begin
anodes = 4'b1110;
cathods = temp3;
count = count + 1;
end
else
begin
count = 0;
end
end
endmodule
// EOF