jct/vga640x480
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Added foreground and background color

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This commit is contained in:
Jens True
2018-11-11 18:55:56 +01:00
parent 2619c16c80
commit 7e569c41fe
1 changed files with 7 additions and 12 deletions
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19
vgasquare.v
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@ -6,13 +6,14 @@
`default_nettype none `default_nettype none
module vgasquare( module vgasquare(
input wire CLK, // board clock: 100 MHz clock in required input wire CLK, // board clock
input wire PIXEL_CLK, // Pixel clock: 25Mhz (or 25.125MHz) for VGA
input wire RST_BTN, // reset button input wire RST_BTN, // reset button
input wire [9:0] box_x1, input wire [9:0] box_x1,
input wire [9:0] box_x2, input wire [9:0] box_x2,
input wire [8:0] box_y1, input wire [8:0] box_y1,
input wire [8:0] box_y2, input wire [8:0] box_y2,
input wire [2:0] box_color, //1 bit for each color input wire [5:0] box_color, //1 bit for each color Foreground and background
output wire VGA_HS_O, // horizontal sync output output wire VGA_HS_O, // horizontal sync output
output wire VGA_VS_O, // vertical sync output output wire VGA_VS_O, // vertical sync output
output wire VGA_R, // 1-bit VGA red output output wire VGA_R, // 1-bit VGA red output
@ -22,18 +23,12 @@ module vgasquare(
wire rst = ~RST_BTN; // reset is active low on AXI bus wire rst = ~RST_BTN; // reset is active low on AXI bus
// generate a 25 MHz pixel strobe
reg [15:0] cnt;
reg pix_stb;
always @(posedge CLK)
{pix_stb, cnt} <= cnt + 16'h4000; // divide by 4: (2^16)/4 = 0x4000
wire [9:0] x; // current pixel x position: 10-bit value: 0-1023 wire [9:0] x; // current pixel x position: 10-bit value: 0-1023
wire [8:0] y; // current pixel y position: 9-bit value: 0-511 wire [8:0] y; // current pixel y position: 9-bit value: 0-511
vga640x480 display ( vga640x480 display (
.i_clk(CLK), .i_clk(CLK),
.i_pix_stb(pix_stb), .i_pix_stb(PIXEL_CLK),
.i_rst(rst), .i_rst(rst),
.o_hs(VGA_HS_O), .o_hs(VGA_HS_O),
.o_vs(VGA_VS_O), .o_vs(VGA_VS_O),
@ -46,7 +41,7 @@ module vgasquare(
assign square = ((x > box_x1) & (y > box_y1) & (x < box_x2) & (y < box_y1)) ? 1 : 0; //Is box within range? assign square = ((x > box_x1) & (y > box_y1) & (x < box_x2) & (y < box_y1)) ? 1 : 0; //Is box within range?
assign VGA_R = square ? box_color[0] : 0; // Set R assign VGA_R = square ? box_color[0] : box_color[3]; // Set R (Foreground and then background)
assign VGA_G = square ? box_color[1] : 0 // Set G assign VGA_G = square ? box_color[1] : box_color[4]; // Set G
assign VGA_B = square ? box_color[2] : 0 // Set B assign VGA_B = square ? box_color[2] : box_color[5]; // Set B
endmodule endmodule