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vga_ctr.v.bak
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vga_ctr.v.bak
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module vga_ctr
(
input vga_clk,//输入时钟50M
input vga_rst_n,
input [9:0] i_data,
output [8:0] o_address,
output reg[23:0] color_data,//颜色信号 红--绿--蓝
output vga_hs, //行同步信号输出
output vga_vs, //场同步信号输出
output reg clk_25M,
output blank_n, //消隐
output sync_n //信号同步
);
//define colors RGB--8|8|8
`define RED 24'hFF0000 /*11111111,00000000,00000000 */
`define GREEN 24'h00FF00 /*00000000,11111111,00000000 */
`define BLUE 24'h0000FF /*00000000,00000000,11111111 */
`define WHITE 24'hFFFFFF /*11111111,11111111,11111111 */
`define BLACK 24'h000000 /*00000000,00000000,00000000 */
`define YELLOW 24'hFFFF00 /*11111111,11111111,00000000 */
`define CYAN 24'hFF00FF /*11111111,00000000,11111111 */
`define ROYAL 24'h00FFFF /*00000000,11111111,11111111 */
// 640 * 480
`define H_FRONT 11'd16
`define H_SYNC 11'd96
`define H_BACK 11'd48
`define H_DISP 11'd640
`define H_TOTAL 11'd800
`define V_FRONT 11'd10
`define V_SYNC 11'd2
`define V_BACK 11'd33
`define V_DISP 11'd480
`define V_TOTAL 11'd525
reg [11:0] cnt_hs; //行信号clk计数,
reg [11:0] cnt_vs; //场信号clk计数
wire lcd_request;
wire [11:0] vga_x; //VGA的x坐标
wire [11:0] vga_y; //VGA的y坐标
wire [8:0] i_data_temp;//进行坐标变换
wire [8:0] i_temp;
wire area0;//网格线标志
wire area1;//界面区域标志
wire area2;//数据框标志
wire area3;//
//功能： 产生25MHz的像素时钟
//////////////////////////////////////////////////////////////////
always @(posedge vga_clk or negedge vga_rst_n)
begin
if(!vga_rst_n)
clk_25M <= 1'b0 ;
else
clk_25M <= ~clk_25M ;
end
//----------------------------------------------
always @ (posedge clk_25M or negedge vga_rst_n)
begin
if (!vga_rst_n)
cnt_hs <= 11'd0;
else
begin
if(cnt_hs < `H_TOTAL - 1'b1) //line over
cnt_hs <= cnt_hs + 1'b1;
else
cnt_hs <= 11'd0;
end
end
assign vga_hs = (cnt_hs <= `H_SYNC - 1'b1) ? 1'b0 : 1'b1;
//VGA行同步信号
always@(posedge clk_25M or negedge vga_rst_n)
begin
if (!vga_rst_n)
cnt_vs <= 11'b0;
else if(cnt_hs == `H_TOTAL - 1'b1) //line over
begin
if(cnt_vs < `V_TOTAL - 1'b1) //frame over
cnt_vs <= cnt_vs + 1'b1;
else cnt_vs <= 11'd0;
end
end
assign vga_vs = (cnt_vs <= `V_SYNC - 1'b1) ? 1'b0 : 1'b1;
//VGA场同步信号
assign blank_n = lcd_request;//vga_hs & vga_vs;
assign sync_n=1'b0;
assign o_address = vga_x[8:0];
//ahead x clock
localparam H_AHEAD = 12'd1;
assign lcd_request = ((cnt_hs >= `H_SYNC + `H_BACK - H_AHEAD )&& (cnt_hs < `H_SYNC + `H_BACK + `H_DISP - H_AHEAD) &&
(cnt_vs >= `V_SYNC + `V_BACK )&& (cnt_vs < `V_SYNC + `V_BACK + `V_DISP) )
? 1'b1 : 1'b0;
//lcd vgax & vgay
assign vga_x = lcd_request ? (cnt_hs - (`H_SYNC + `H_BACK - H_AHEAD)) : 11'd0;
assign vga_y = lcd_request ? (cnt_vs - (`V_SYNC + `V_BACK)) : 11'd0;
//-----------------------
assign i_data_temp = i_data[9:1];
assign i_temp = (240-i_data_temp/2)+120;
// 示波器界面
assign area0 = ( vga_x == 10 || vga_x==60 ||
vga_x==110 || vga_x==160 ||
vga_x==210 || vga_x==260 ||
vga_x==310 || vga_x==360 ||
vga_x==410 || vga_x==460 ||
vga_x==510
|| vga_y == 20 || vga_y == 75
|| vga_y == 130 || vga_y == 185
|| vga_y == 240 || vga_y == 295
|| vga_y == 350 || vga_y == 405
|| vga_y == 460 )
?1'b1 : 1'b0;
assign area1 = (vga_x >= 10 && vga_x <= 510 && vga_y >= 20 && vga_y <= 460) ?1'b1 : 1'b0;
//--------------------
//示波器数据显示界面
assign area2 = (vga_x >= 520 && vga_x <= 620 && vga_y >= 80 && vga_y <= 400) ?1'b1 : 1'b0;
//显示数字
//8
assign area3 = ( vga_x >= 1 && vga_x <= 6 && ( vga_y == 1 || vga_y == 6 || vga_y == 11 ) ||
vga_y >= 1 && vga_y <= 11 && ( vga_x == 1 || vga_x == 6 )
//vga_x >= 1 && vga_x <= 4 && ( vga_y == 1 || vga_y == 4 || vga_y == 7 )
//vga_x >= 1 && vga_x <= 4 && ( vga_y == 1 || vga_y == 4 || vga_y == 7 )
) ?1'b1 : 1'b0;
//显示
always@(posedge clk_25M or negedge vga_rst_n)
begin
if(!vga_rst_n)
color_data <= 24'H0;
else if(area1)
if(vga_y == (i_temp[8:0]))
color_data <= `RED;
else if(area0)
color_data<= `BLACK; //24'H77909E;//格线
else
color_data <= 24'H606060;//内背景
else if(area2)
color_data <= `WHITE;//
else if(area3)
color_data <= `BLACK;//
else
color_data <= 24'H808080;//外背景
end
endmodule
/*if(!vga_rst_n)
color_data <= 24'h0;
else
begin
if ((vga_x >= 0) &&( vga_x < (`H_DISP/8)*1) )
color_data <= `RED;
else if(vga_x >= (`H_DISP/8)*1 && vga_x < (`H_DISP/8)*2)
color_data <= `BLUE;
else if(vga_x >= (`H_DISP/8)*2 && vga_x < (`H_DISP/8)*3)
color_data <= `GREEN;
else if(vga_x >= (`H_DISP/8)*3 && vga_x < (`H_DISP/8)*4)
color_data <= `CYAN;
else if(vga_x >= (`H_DISP/8)*4 && vga_x < (`H_DISP/8)*5)
color_data <= `BLACK;
else if(vga_x >= (`H_DISP/8)*5 && vga_x < (`H_DISP/8)*6)
color_data <= `WHITE;
else if(vga_x >= (`H_DISP/8)*6 && vga_x < (`H_DISP/8)*7)
color_data <= `ROYAL;
else if(vga_x >= (`H_DISP/8)*7 && vga_x < (`H_DISP/8)*8)
color_data <= `YELLOW;
end */
/*if(!vga_rst_n)
color_data <= 24'h0;
else
begin
if ((vga_y >= 0) &&( vga_y < (`V_DISP/4)*1) )
color_data <= `RED;
else if(vga_y >= (`V_DISP/4)*1 && vga_y < (`V_DISP/4)*2)
color_data <= `BLUE;
else if(vga_y >= (`V_DISP/4)*2 && vga_y < (`V_DISP/4)*3)
color_data <= `GREEN;
else if(vga_y >= (`V_DISP/4)*3 && vga_y < (`V_DISP/4)*4)
color_data <= `YELLOW;
end */
/*
if(!vga_rst_n)
color_data <= 24'h0;
else
begin
if ((vga_y >= 10) &&( vga_y < (`V_DISP/4)*1+10) )
color_data <= `RED;
else if(vga_y >= ((`V_DISP/4)*1+10) && vga_y < (`V_DISP/4)*4)
begin
if ((vga_x >= 0) &&( vga_x < (`H_DISP/8)*1) )
color_data <= `WHITE;
else if(vga_x >= (`H_DISP/8)*1 && vga_x < (`H_DISP/8)*2)
color_data <= `BLUE;
else if(vga_x >= (`H_DISP/8)*2 && vga_x < (`H_DISP/8)*3)
color_data <= `GREEN;
else if(vga_x >= (`H_DISP/8)*3 && vga_x < (`H_DISP/8)*4)
color_data <= `CYAN;
else if(vga_x >= (`H_DISP/8)*4 && vga_x < (`H_DISP/8)*5)
color_data <= `BLACK;
else if(vga_x >= (`H_DISP/8)*5 && vga_x < (`H_DISP/8)*6)
color_data <= `WHITE;
else if(vga_x >= (`H_DISP/8)*6 && vga_x < (`H_DISP/8)*7)
color_data <= `ROYAL;
else if(vga_x >= (`H_DISP/8)*7 && vga_x < (`H_DISP/8)*8)
color_data <= `YELLOW;
end
end */