Honored ContributorTraffic Light display on VGA
Hi everyone!
I am planning to make a verilog project on traffic lights similar as found in this video https://www.youtube.com/watch?v=ieBteoMly7w. This is my code but it won't display something on the screen. Somebody help me with this.
This is my code for it to display on the screen..
always @(posedge clk)
begin
if(reset == 1)
q <= 0;
else
q <= q + 1;
end
assign clk3 = q[24]; // 3 Hz
always @(posedge clk3)
begin
if (reset == 1)
begin
state <= S0;
count <= 0;
end
else
case(state)
S0: if(count < SEC5)
begin
state <= S0;
count <= count + 1;
end
else
begin
state <= S1;
count <= 0;
end
S1: if(count < SEC2)
begin
state <= S1;
count <= count + 1;
end
else
begin
state <= S2;
count <= 0;
end
S2: if(count < SEC2)
begin
state <= S2;
count <= count + 1;
end
else
begin
state <= S3;
count <= 0;
end
S3: if(count < SEC5)
begin
state <= S3;
count <= count + 1;
end
else
begin
state <= S4;
count <= 0;
end
S4: if(count < SEC2)
begin
state <= S4;
count <= count + 1;
end
else
begin
state <= S5;
count <= 0;
end
S5: if(count < SEC2)
begin
state <= S5;
count <= count + 1;
end
else
begin
state <= S0;
count <= 0;
end
default state <= S0;
endcase
end
always @(posedge clk3)
begin
case(state)
S0: begin out <= 4'd5;
if(out != 0)
begin
out <= out - 4'd1;
end
end
S1: begin out <= 4'd2;
if(out != 0)
begin
out <= out - 4'd1;
end
end
S2: begin out <= 4'd2;
if(out != 0)
begin
out <= out - 4'd1;
end
end
S3: begin out <= 4'd5;
if(out != 0)
begin
out <= out - 4'd1;
end
end
S4: begin out <= 4'd2;
if(out != 0)
begin
out <= out - 4'd1;
end
end
S5: begin out <= 4'd2;
if(out != 0)
begin
out <= out - 4'd1;
end
end
default state <= S0;
endcase
end
//************************Setting the Blinking of Lights************************//
always @(posedge clk3)
begin
case(state)
S0: begin
if(Auto5 || Auto8)
begin
VGA_R = 3'b000 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if(Auto9 || Auto12)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if (Auto1 || Auto2 != Auto3 != Auto4 != Auto5 != Auto6 != Auto7 != Auto8 != Auto9 != Auto10 != Auto11 != Auto12 != Auto13 != Auto14)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b11 & inDisplayArea;
end
else
begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
end
S1: begin
if(Auto4 || Auto7)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if(Auto9 || Auto12)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if (Auto1 || Auto2 != Auto3 != Auto4 != Auto5 != Auto6 != Auto7 != Auto8 != Auto9 != Auto10 != Auto11 != Auto12 != Auto13 != Auto14)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b11 & inDisplayArea;
end
else
begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
end
S2: begin
if(Auto3 || Auto6)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if(Auto9 || Auto12)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if (Auto1 || Auto2 != Auto3 != Auto4 != Auto5 != Auto6 != Auto7 != Auto8 != Auto9 != Auto10 != Auto11 != Auto12 != Auto13 != Auto14)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b11 & inDisplayArea;
end
else
begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
end
S3: begin
if(Auto3 || Auto6)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if(Auto11 || Auto14)
begin
VGA_R = 3'b000 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if (Auto1 || Auto2 != Auto3 != Auto4 != Auto5 != Auto6 != Auto7 != Auto8 != Auto9 != Auto10 != Auto11 != Auto12 != Auto13 != Auto14)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b11 & inDisplayArea;
end
else
begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
end
S4: begin
if(Auto3 || Auto6)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if(Auto10 || Auto13)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if (Auto1 || Auto2 != Auto3 != Auto4 != Auto5 != Auto6 != Auto7 != Auto8 != Auto9 != Auto10 != Auto11 != Auto12 != Auto13 != Auto14)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b11 & inDisplayArea;
end
else
begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
end
S5: begin
if(Auto3 || Auto6)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if(Auto9 || Auto12)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b000 & inDisplayArea;
VGA_B = 2'b00 & inDisplayArea;
end
else if (Auto1 || Auto2 != Auto3 != Auto4 != Auto5 != Auto6 != Auto7 != Auto8 != Auto9 != Auto10 != Auto11 != Auto12 != Auto13 != Auto14)
begin
VGA_R = 3'b111 & inDisplayArea;
VGA_G = 3'b111 & inDisplayArea;
VGA_B = 2'b11 & inDisplayArea;
end
end
else
begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
default begin
VGA_R = 0 & inDisplayArea;
VGA_G = 0 & inDisplayArea;
VGA_B = 0 & inDisplayArea;
end
endcase
end
endmodule
Your help is greatly appreciated.
