\u4e09\u3001\u589e\u52a0\u6211\u4eec\u7684\u4ee3\u7801\u5185\u5bb9<\/strong><\/h2>\n\n\n\n1\uff09\u8fd9\u91cc\u521b\u5efa\u4e00\u4e2a\u663e\u793a\u6a21\u5757\uff0c\u663e\u793a\u6a21\u5757\u8d1f\u8d23\u8f93\u51fa\u6807\u51c6\u7684RGB\u65f6\u5e8f\uff0c\u5177\u4f53\u5982\u4e0b( color_bar.v)<\/p>\n\n\n\n
\/\/www.hellofpga.com\/\/
`timescale 1ns \/ 1ps
module color_bar (
input wire clk,
input wire rst_n,
output reg hsync,
output reg vsync,
output reg de,
output reg [7:0] rgb_r,
output reg [7:0] rgb_g,
output reg [7:0] rgb_b
);
`define RES_800x480
`ifdef RES_800x480
parameter H_ACTIVE = 800;
parameter H_FRONT = 8;
parameter H_SYNC = 4;
parameter H_BACK = 8;
parameter V_ACTIVE = 480;
parameter V_FRONT = 8;
parameter V_SYNC = 4;
parameter V_BACK = 8;
`endif
reg [11:0] h_count = 0;
reg [11:0] v_count = 0;
reg pix_data_req;
always @(posedge clk or negedge rst_n) begin
if(!rst_n)begin
h_count<=12'd0;
v_count<=12'd0;
pix_data_req<=1'b0;
de<=1'b0;
end
else begin
if (h_count < H_ACTIVE + H_FRONT + H_SYNC + H_BACK - 1'b1)
h_count <= h_count + 1;
else begin
h_count <= 0;
if (v_count < V_ACTIVE + V_FRONT + V_SYNC + V_BACK - 1'b1)
v_count <= v_count + 1;
else
v_count <= 0;
end
hsync <= (h_count < H_SYNC) ? 0 : 1;
vsync <= (v_count < V_SYNC) ? 0 : 1;
de <= ((h_count >= H_SYNC + H_BACK ) && (h_count < H_SYNC + H_BACK + H_ACTIVE)
&&(v_count >= V_SYNC + V_BACK ) && (v_count < V_SYNC + V_BACK + V_ACTIVE)) ? 1'b1:1'b0;
pix_data_req <= ((h_count >= H_SYNC + H_BACK -1'b1 ) && (h_count < H_SYNC + H_BACK + H_ACTIVE -1'b1)
&&(v_count >= V_SYNC + V_BACK ) && (v_count < V_SYNC + V_BACK + V_ACTIVE)) ? 1'b1:1'b0;
end
end
wire [11:0] pix_xpos = pix_data_req ? (h_count - (H_SYNC + H_BACK) ):12'd0;
always @(posedge clk or negedge rst_n) begin
if(!rst_n)begin
rgb_r<=8'h00; rgb_g<=8'h00; rgb_b<=8'h00;
end
else if(pix_data_req)begin
if(pix_xpos==12'd0)
begin rgb_r<=8'hff; rgb_g<=8'hff; rgb_b<=8'hff; end \/\/White
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 1)
begin rgb_r<=8'hff; rgb_g<=8'hff; rgb_b<=8'h00; end \/\/Yellow
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 2)
begin rgb_r<=8'h00; rgb_g<=8'hff; rgb_b<=8'hff; end \/\/Cyan
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 3)
begin rgb_r<=8'h00; rgb_g<=8'hff; rgb_b<=8'h00; end \/\/Green
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 4)
begin rgb_r<=8'hff; rgb_g<=8'h00; rgb_b<=8'hff; end \/\/Magenta
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 5)
begin rgb_r<=8'hff; rgb_g<=8'h00; rgb_b<=8'h00; end \/\/Red
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 6)
begin rgb_r<=8'h00; rgb_g<=8'h00; rgb_b<=8'hff; end \/\/Blue
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 7)
begin rgb_r<=8'h00; rgb_g<=8'h00; rgb_b<=8'h00; end \/\/Black
end
else begin
rgb_r<=8'h00; rgb_g<=8'h00; rgb_b<=8'h00;
end
end
endmodule
\ufeff<\/pre>\n\n\n\n2\uff09\u521b\u5efa\u4e00\u4e2a\u9876\u5c42\u6a21\u5757\uff08top.v\uff09\uff0c\u5206\u522b\u8c03\u7528\u65f6\u949f\u3001\u4ee5\u53ca\u5f69\u6761\u7eb9\u663e\u793a\u6a21\u5757<\/p>\n\n\n\n
\/\/www.hellofpga.com\/\/
`timescale 1ns \/ 1ps
module top(
input clk,
output [7:0] LCD_R,
output [7:0] LCD_G,
output [7:0] LCD_B,
output LCD_HS,
output LCD_VS,
output LCD_DE,
output LCD_CLK,
output LCD_BL
);
wire PCLK;
clk_wiz_0 u2(
.clk_in1(clk),
.clk_out1(PCLK)
);
assign LCD_CLK=PCLK;
assign LCD_BL=1;
color_bar u4 (
.clk(PCLK),
\t .rst_n(1'b1),
\t .hsync(LCD_HS),
\t .vsync(LCD_VS),
\t .de(LCD_DE),
.rgb_r(LCD_R),
.rgb_g(LCD_G),
.rgb_b(LCD_B)
);
endmodule<\/pre>\n\n\n\n\u8fd9\u91cc\u6211\u4eec\u76f4\u63a5\u5c06LCD_BL\u8bbe\u7f6e\u4e3a\u9ad8\u7535\u5e73\uff0c\u8fd9\u6837\u53ea\u8981\u7cfb\u7edf\u8fd0\u884c\uff0c\u5c4f\u5e55\u7684\u80cc\u5149\u5c31\u4f1a\u88ab\u70b9\u4eae\u3002<\/p>\n\n\n\n
3\uff09\u6700\u540e\u518d\u589e\u52a0\u7ea6\u675f\u6587\u4ef6 \uff08PIN_XDC.XDC\uff09\uff08 \u5bf9\u5e94Lemon ZYNQ\u4e3b\u677f\uff09<\/p>\n\n\n\n
set_property PACKAGE_PIN H16 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_R[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_G[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LCD_B[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports LCD_VS]
set_property IOSTANDARD LVCMOS33 [get_ports LCD_HS]
set_property IOSTANDARD LVCMOS33 [get_ports LCD_BL]
set_property IOSTANDARD LVCMOS33 [get_ports LCD_DE]
set_property IOSTANDARD LVCMOS33 [get_ports LCD_CLK]
set_property PACKAGE_PIN U17 [get_ports {LCD_R[0]}]
set_property PACKAGE_PIN T16 [get_ports {LCD_R[1]}]
set_property PACKAGE_PIN W15 [get_ports {LCD_R[2]}]
set_property PACKAGE_PIN V15 [get_ports {LCD_R[3]}]
set_property PACKAGE_PIN V18 [get_ports {LCD_R[4]}]
set_property PACKAGE_PIN V17 [get_ports {LCD_R[5]}]
set_property PACKAGE_PIN R17 [get_ports {LCD_R[6]}]
set_property PACKAGE_PIN R16 [get_ports {LCD_R[7]}]
set_property PACKAGE_PIN P18 [get_ports {LCD_G[0]}]
set_property PACKAGE_PIN N17 [get_ports {LCD_G[1]}]
set_property PACKAGE_PIN P16 [get_ports {LCD_G[2]}]
set_property PACKAGE_PIN P15 [get_ports {LCD_G[3]}]
set_property PACKAGE_PIN W13 [get_ports {LCD_G[4]}]
set_property PACKAGE_PIN V12 [get_ports {LCD_G[5]}]
set_property PACKAGE_PIN W16 [get_ports {LCD_G[6]}]
set_property PACKAGE_PIN V16 [get_ports {LCD_G[7]}]
set_property PACKAGE_PIN T10 [get_ports {LCD_B[0]}]
set_property PACKAGE_PIN T11 [get_ports {LCD_B[1]}]
set_property PACKAGE_PIN Y14 [get_ports {LCD_B[2]}]
set_property PACKAGE_PIN W14 [get_ports {LCD_B[3]}]
set_property PACKAGE_PIN W19 [get_ports {LCD_B[4]}]
set_property PACKAGE_PIN W18 [get_ports {LCD_B[5]}]
set_property PACKAGE_PIN U19 [get_ports {LCD_B[6]}]
set_property PACKAGE_PIN U18 [get_ports {LCD_B[7]}]
set_property PACKAGE_PIN Y16 [get_ports LCD_HS]
set_property PACKAGE_PIN Y19 [get_ports LCD_VS]
set_property PACKAGE_PIN T14 [get_ports LCD_BL]
set_property PACKAGE_PIN Y18 [get_ports LCD_DE]
set_property PACKAGE_PIN Y17 [get_ports LCD_CLK]<\/pre>\n\n\n\n\u56db\u3001\u7f16\u8bd1\u7efc\u5408\uff0c\u5e76\u8fd0\u884c\u4ee3\u7801<\/strong><\/h2>\n\n\n\n\u6700\u7ec8\u663e\u793a\u6548\u679c\u5982\u56fe\uff08\u4ece\u5de6\u5230\u53f3\u4f9d\u6b21\u663e\u793a\u767d\u9ec4\u9752\u7eff\u7d2b\u7ea2\u84dd\u9ed1\uff09\uff0c\u53ef\u89c1\u6211\u4eec\u7684\u5c4f\u5e55\u5df2\u7ecf\u6b63\u5e38\u88ab\u70b9\u4eae\u4e86 (\u7167\u7247\u62cd\u51fa\u6765\u6548\u679c\u5dee\u4e00\u4e9b\uff0c\u5b9e\u9645\u663e\u793a\u989c\u8272\u8fd8\u662f\u5f88\u9c9c\u8273\u7684)<\/p>\n\n\n\n![\"\u6b64\u56fe\u7247\u7684](\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2024\/12\/image-2-1024x612.png\")
<\/figure>\n\n\n\n\u4e94\u3001\u4ee3\u7801\u89e3\u8bfb\uff1a<\/strong><\/h2>\n\n\n\n1\uff09 \u4e0d\u540c\u5206\u8fa8\u7387\u7684\u4e0d\u540c\u53c2\u6570<\/strong><\/p>\n\n\n\nRGB\u7684\u65f6\u5e8f\u901a\u5e38\u6ee1\u8db3VGA\u7684\u6807\u51c6\uff0c\u4ee5\u4e0b\u662fVGA\u5206\u8fa8\u7387\u7684\u53c2\u6570<\/p>\n\n\n\n![\"\u6b64\u56fe\u7247\u7684](\"http:\/\/xilinx.eetrend.com\/files-eetrend-xilinx\/blog\/201804\/12782-36276-tu_9shi_xu_can_shu_.png\")
<\/figure>\n\n\n\n\u65f6\u5e8f\u56fe\uff0c\u4ee5\u53ca\u6d88\u9690\u7684\u6982\u5ff5\uff0c\u8fd8\u6709\u4e0d\u540c\u5206\u8fa8\u7387\u65f6\uff0c\u5404\u4e2a\u533a\u57df\u7684\u53c2\u6570
![\"\"](\"http:\/\/xilinx.eetrend.com\/files-eetrend-xilinx\/blog\/201804\/12782-36275-tu_8ge_ge_qu_yu_de_can_shu_.png\")
<\/p>\n\n\n\n
\u56e0\u4e3a\u6211\u4eec\u672c\u6b21\u5b9e\u9a8c\u70b9\u4eae\u7684\u662fLCD\u5c4f\uff0c\u6240\u4ee5\u8fd9\u91cc\u7684\u65f6\u5e8f\u6211\u4eec\u76f4\u63a5\u53c2\u8003LCD\u5c4f\u5e55\u624b\u518c\u4e2d\u5bf9\u5e94\u7684LCD\u65f6\u5e8f<\/p>\n\n\n\n![\"\u6b64\u56fe\u7247\u7684](\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2024\/12\/image-6-1024x509.png\")
<\/figure>\n\n\n\n\u4e0b\u9762\u662f\u672c\u6b21\u5b9e\u9a8c\u4e2d\u6839\u636eLCD\u5c4f\u5e55800X480 \u5206\u8fa8\u7387\u6240\u6dfb\u52a0\u7684\u53c2\u6570\uff0c\u901a\u8fc7 `define RES_800x480 \u6765\u8fdb\u884c\u9009\u62e9\uff0c\u5176\u4e2d\u7684\u53c2\u6570\u5747\u548c\u4e0a\u8ff0\u56fe\u8868\u4e2d\u7684\u5185\u5bb9\u5bf9\u5e94\u3002<\/p>\n\n\n\n
`ifdef RES_800x480
parameter H_ACTIVE = 800;
parameter H_FRONT = 8;
parameter H_SYNC = 4;
parameter H_BACK = 8;
parameter V_ACTIVE = 480;
parameter V_FRONT = 8;
parameter V_SYNC = 4;
parameter V_BACK = 8;
`endif<\/pre>\n\n\n\n2\uff09hsync \u548cvsync \u4ee5\u53cade\u7684\u903b\u8f91\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\nif (h_count < H_ACTIVE + H_FRONT + H_SYNC + H_BACK - 1'b1)
h_count <= h_count + 1;
else begin
h_count <= 0;
if (v_count < V_ACTIVE + V_FRONT + V_SYNC + V_BACK - 1'b1)
v_count <= v_count + 1;
else
v_count <= 0;
end
hsync <= (h_count < H_SYNC) ? 0 : 1;
vsync <= (v_count < V_SYNC) ? 0 : 1;
de <= ((h_count >= H_SYNC + H_BACK ) && (h_count < H_SYNC + H_BACK + H_ACTIVE) &&(v_count >= V_SYNC + V_BACK ) && (v_count < V_SYNC + V_BACK + V_ACTIVE)) ? 1'b1:1'b0;<\/pre>\n\n\n\n\u5176\u4e2d h_count<\/code> \u548c v_count<\/code> \u5206\u522b\u662f\u6c34\u5e73\u548c\u5782\u76f4\u65b9\u5411\u7684\u8ba1\u6570\u5668\u3002<\/p>\n\n\n\n\n- h_count\u5468\u671f\u662f\u4ece H_SYNC \u5230 H_BACK(H_BP)\u5230 H_ACTIVE \u5230 H_FRONT(H_FP\uff09<\/li>\n\n\n\n
- v_count\u5468\u671f\u662f\u4eceV_SYNC \u5230 V_BACK(V_BP)\u5230 V_ACTIVE \u5230 V_FRONT(H_FP\uff09<\/li>\n\n\n\n
- de \u5c31\u662f H_ACTIVE \u548cV_ACTIVE \u90fd\u6709\u6548\u7684\u533a\u57df\uff0c\u5373\u56fe\u50cf\u663e\u793a\u533a\u57df<\/li>\n<\/ul>\n\n\n\n
\u4e0b\u56fe\u662fST\u7684\u4e00\u4e2aLCD\u63a7\u5236\u65f6\u5e8f\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8be5\u56fe\u6765\u5bf9\u6d41\u7a0b\u8fdb\u884c\u4e86\u89e3\u3002<\/p>\n\n\n\n![\"\u6b64\u56fe\u7247\u7684](\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/04\/image-61.png\")
<\/figure>\n\n\n\n3\uff09 \u5f69\u6761\u7eb9\u7684\u663e\u793a\u90e8\u5206\uff1a<\/strong><\/p>\n\n\n\na) \u589e\u52a0\u4e00\u4e2a\u4fe1\u53f7pix_data_req\uff0c\u8fd9\u4e2a\u4fe1\u53f7\u548cde\u76f8\u7c7b\u4f3c\uff0c\u90fd\u4ee3\u8868\u6709\u6548\u663e\u793a\u533a\u57df\uff0c\u4f46\u662fpix_data_req\u5728h\u8ba1\u6570\u4e0a\u4f1a\u65e9de\u4e00\u4e2a\u50cf\u7d20\u70b9\uff0c\u7528\u4e8e\u5728de\u4fe1\u53f7\u4e4b\u524d\u5c31\u5c06\u5f85\u663e\u793a\u7684\u989c\u8272\u6570\u636e\u51c6\u5907\u597d<\/p>\n\n\n\n
pix_data_req <= ((h_count >= H_SYNC + H_BACK -1'b1 ) && (h_count < H_SYNC + H_BACK + H_ACTIVE -1'b1)&&(v_count >= V_SYNC + V_BACK ) && (v_count < V_SYNC + V_BACK + V_ACTIVE)) ? 1'b1:1'b0;<\/pre>\n\n\n\nb) \u589e\u52a0pix_xpos\u4fe1\u53f7\uff0c\u8be5\u4fe1\u53f7\u5bf9\u5e94\u6709\u6548\u663e\u793a\u533a\u57df\u4e2dx\u7684\u5750\u6807\uff08\u4ece0\u5f00\u59cb\u8ba1\u6570\uff09<\/p>\n\n\n\n
wire [11:0] pix_xpos = pix_data_req ? (h_count - (H_SYNC + H_BACK) ):12'd0;<\/pre>\n\n\n\nc) \u5f69\u6761\u7eb9\u7684\u903b\u8f91\u4e5f\u6bd4\u8f83\u5bb9\u6613\u7406\u89e3\uff0c \u6211\u4eec\u5c06H_ACTIVE \u5206\u5272\u62108\u7b49\u4efd\uff0c\u6bcf\u7b49\u4efd\u90fd\u663e\u793a\u4e0d\u540c\u989c\u8272\u4f5c\u6f14\u793a\uff0c8\u7b49\u5206\u901a\u8fc7\u4e0b\u5217\u65b9\u5f0f\u6765\u5212\u5206<\/p>\n\n\n\n
\uff08H_ACTIVE \/ 8 ) * n \u8fd9\u90e8\u5206\u662f8\u7b49\u5206\u989c\u8272\u7684\u5207\u5206\u70b9\uff0c\u5f53\u6211\u4eec\u5f53\u524d\u7684pix_xpos==\uff08H_ACTIVE \/ 8 ) * n\u65f6\uff0c\u5c31\u5c06RGB\u8f93\u51fa\u5bf9\u5e94\u7684\u989c\u8272\u3002 (\u56e0\u4e3a\u6211\u4eec\u7684H_ACTIVE\u8fd9\u4e2a\u503c\u662f\u786e\u8ba4\u7684\uff0c\u6240\u4ee5\u8fd9\u91cc\u7684\u4e58\u6cd5\u548c\u9664\u6cd5\u662f\u5728vivado \u7f16\u8bd1\u8fc7\u7a0b\u4e2d\u5c31\u6362\u7b97\u6210\u5bf9\u5e94\u7684\u7ed3\u679c\u4e86\uff0c\u7ed9\u8fdbFPGA\u7684\u503c\u4f1a\u662f\u4e00\u4e2a\u5e38\u6570\uff0c\u800c\u4e0d\u662f\u7531FPGA\u8fdb\u884c\u8fd0\u7b97\u7684)<\/strong><\/p>\n\n\n\nif(pix_data_req)begin
if(pix_xpos==12'd0)
begin rgb_r<=8'hff; rgb_g<=8'hff; rgb_b<=8'hff; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 1)
begin rgb_r<=8'hff; rgb_g<=8'hff; rgb_b<=8'h00; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 2)
begin rgb_r<=8'h00; rgb_g<=8'hff; rgb_b<=8'hff; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 3)
begin rgb_r<=8'h00; rgb_g<=8'hff; rgb_b<=8'h00; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 4)
begin rgb_r<=8'hff; rgb_g<=8'h00; rgb_b<=8'hff; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 5)
begin rgb_r<=8'hff; rgb_g<=8'h00; rgb_b<=8'h00; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 6)
begin rgb_r<=8'h00; rgb_g<=8'h00; rgb_b<=8'hff; end
else if(pix_xpos ==( H_ACTIVE \/ 8 ) * 7)
begin rgb_r<=8'h00; rgb_g<=8'h00; rgb_b<=8'h00; end
end<\/pre>\n\n\n\n\u540e\u7eed\u5c06\u4f1a\u4ecb\u7ecdLCD\u5c4f\u7684\u66f4\u591a\u73a9\u6cd5\u3002<\/p>\n\n\n\n
![\"\u6b64\u56fe\u7247\u7684](\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2024\/12\/image-3-1024x589.png\")
<\/figure>\n\n\n\n![\"\u6b64\u56fe\u7247\u7684](\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2021\/07\/image-3.png\")
<\/figure>\n\n\n\n![\"\"](\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2024\/10\/image-97-1024x756.png\")
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