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projector.v
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286 lines (275 loc) · 9.01 KB
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`timescale 1ns / 1ps
module projector(output VGA_SYNC_N, output VGA_BLANK_N, input [4:0]GPIO, input CLOCK_50, output reg VGA_HS, output reg VGA_VS, output VGA_CLK, output [7:0]VGA_R, output [7:0]VGA_B, output [7:0]VGA_G);
//GPIO[0] is ab22, GPIO[2] is ab21, GPIO[4] is ac21
//1) Divide Clock from 50 MHz to 25 MHz
reg reset = 0; // for PLL
wire clk25MHz;
ip ip1(
.areset(reset),
.inclk0(CLOCK_50),
.c0(clk25MHz),
.locked()
);
//2) counter and sync generation
reg [9:0] counter_x = 0; // horizontal counter
reg [9:0] counter_y = 0; // vertical counter
always @(posedge clk25MHz) // horizontal counter
begin
if (counter_x < 799)
counter_x <= counter_x + 1; // horizontal counter (including off-screen horizontal 160 pixels) total of 800 pixels
else
counter_x <= 0;
end // always
always @ (posedge clk25MHz) // vertical counter
begin
if (counter_x == 799) // only counts up 1 count after horizontal finishes 800 counts
begin
if (counter_y < 525) // vertical counter (including off-screen vertical 45 pixels) total of 525 pixels
counter_y <= counter_y + 1;
else
counter_y <= 0;
end
end
always @(posedge clk25MHz)
begin
VGA_HS <= (counter_x >= 0 && counter_x < 96) ? 1:0; // hsync high for 96 counts of counterx
VGA_VS <= (counter_y >= 0 && counter_y < 2) ? 1:0; // vsync high for 2 counts of countery
end
assign VGA_CLK = clk25MHz; //four our DAC
//3) Run designs based on GPIOs
reg [7:0] r_red;
reg [7:0] r_blue;
reg [7:0] r_green;
always @ (posedge clk25MHz) begin
if (GPIO[0] == 0 && GPIO[2] == 0 && GPIO[4] == 0) begin //VERTICAL
if (counter_x < 244)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end
else if (counter_x >= 244 && counter_x < 344)
begin
r_red <= 8'hFF; // red
r_blue <= 8'h00;
r_green <= 8'h00;
end
else if (counter_x >= 344 && counter_x < 444)
begin
r_red <= 8'h00; // blue
r_blue <= 8'hFF;
r_green <= 8'h00;
end
else if (counter_x >= 444 && counter_x < 544)
begin
r_red <= 8'h00; // green
r_blue <= 8'h00;
r_green <= 8'hFF;
end
else if(counter_x >= 544 && counter_x < 644)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end
else if(counter_x >= 644)
begin
r_red <= 8'hFF; // pink
r_blue <= 8'hFF;
r_green <= 8'h00;
end
end
else if (GPIO[0] == 1 && GPIO[2] == 1 && GPIO[4] == 1) begin //HORIZONTAL
if (counter_y < 135)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end
else if (counter_y >= 135 && counter_y < 235)
begin
r_red <= 8'hFF; // red
r_blue <= 8'h00;
r_green <= 8'h00;
end
else if (counter_y >= 235 && counter_y < 335)
begin
r_red <= 8'h00; // blue
r_blue <= 8'hFF;
r_green <= 8'h00;
end
else if (counter_y >= 335 && counter_y <= 435)
begin
r_red <= 8'h00; // green
r_blue <= 8'h00;
r_green <= 8'hFF;
end
else if(counter_y >= 435)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end
end
if (GPIO[0] == 0 && GPIO[2] == 1 && GPIO[4] == 0) begin //SMILEY
if (counter_y < 135)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_y < 135)
else if (counter_y >= 135 && counter_y < 205)
begin
if (counter_x < 324)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_x < 324)
else if (counter_x >= 324 && counter_x < 604)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 324 && counter_x < 604)
else if (counter_x >= 604)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // else if (counter_x >= 604)
end // else if (counter_y >= 135 && counter_y < 205)
else if (counter_y >= 205 && counter_y < 217)
begin
if (counter_x < 324)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_x < 324)
else if (counter_x >= 324 && counter_x < 371)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 324 && counter_x < 371)
else if (counter_x >= 371 && counter_x < 383)
begin
r_red <= 8'h00; // black
r_blue <= 8'h00;
r_green <= 8'h00;
end // else if (counter_x >= 371 && counter_x < 383)
else if (counter_x >= 383 && counter_x < 545)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 383 && counter_x < 545)
else if (counter_x >= 545 && counter_x < 557)
begin
r_red <= 8'h00; // black
r_blue <= 8'h00;
r_green <= 8'h00;
end // else if (counter_x >= 545 && counter_x < 557)
else if (counter_x >= 557 && counter_x < 604)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 557 && counter_x < 604)
else if (counter_x >= 604)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // else if (counter_x >= 604)
end // else if (counter_y >= 205 && counter_y < 217)
else if (counter_y >= 217 && counter_y < 305)
begin
if (counter_x < 324)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_x < 324)
else if (counter_x >= 324 && counter_x < 604)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 324 && counter_x < 604)
else if (counter_x >= 604)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // else if (counter_x >= 604)
end // else if (counter_y >= 217 && counter_y < 305)
else if (counter_y >= 305 && counter_y < 310)
begin
if (counter_x < 324)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_x < 324)
else if (counter_x >= 324 && counter_x < 371)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 324 && counter_x < 371)
else if (counter_x >= 371 && counter_x < 557)
begin
r_red <= 8'h00; // black
r_blue <= 8'h00;
r_green <= 8'h00;
end // else if (counter_x >= 371 && counter_x < 557)
else if (counter_x >= 557 && counter_x < 604)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 557 && counter_x < 604)
else if (counter_x >= 604)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // else if (counter_x >= 604)
end // else if (counter_y >= 217 && counter_y < 305)
else if (counter_y >= 305 && counter_y < 414)
begin
if (counter_x < 324)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_x < 324)
else if (counter_x >= 324 && counter_x < 604)
begin
r_red <= 8'hFF; // yellow
r_blue <= 8'h00;
r_green <= 8'hFF;
end // else if (counter_x >= 324 && counter_x < 604)
else if (counter_x >= 604)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // else if (counter_x >= 604)
end // else if (counter_y >= 305 && counter_y < 414)
else if (counter_y <= 414)
begin
r_red <= 8'hFF; // white
r_blue <= 8'hFF;
r_green <= 8'hFF;
end // if (counter_y >= 414)
end
end
assign VGA_R = (counter_x > 144 && counter_x <= 783 && counter_y > 35 && counter_y <= 514) ? r_red : 8'h00;
assign VGA_B = (counter_x > 144 && counter_x <= 783 && counter_y > 35 && counter_y <= 514) ? r_blue : 8'h00;
assign VGA_G = (counter_x > 144 && counter_x <= 783 && counter_y > 35 && counter_y <= 514) ? r_green : 8'h00;
assign VGA_SYNC_N = 1'b0;
assign VGA_BLANK_N = (counter_x > 144 && counter_x <= 783 && counter_y > 35 && counter_y <= 514) ? 1: 0;
endmodule