怎么注册一个公司网站,seo关键词优化推广外包,wordpress小程序调用数据库字段,松岗网站设计REVIEW 已经学习过VGA 时序与实现-CSDN博客 VGA 多分辨率-CSDN博客 今天就来让TFT屏显示一下
ACZ702开发板管脚信息表 - ACZ702开发板 - 芯路恒电子技术论坛 - Powered by Discuz! (corecourse.cn) 小梅哥视频#xff1a;24 RGB TFT显示屏原理与驱动实现_哔哩哔哩_bilibili
…REVIEW 已经学习过VGA 时序与实现-CSDN博客 VGA 多分辨率-CSDN博客 今天就来让TFT屏显示一下
ACZ702开发板管脚信息表 - ACZ702开发板 - 芯路恒电子技术论坛 - Powered by Discuz! (corecourse.cn) 小梅哥视频24 RGB TFT显示屏原理与驱动实现_哔哩哔哩_bilibili
1. 设置显示屏参数与时钟 注意到VGA_parameter.v中不懂得分辨率对应于不同的频率这里结合IP核学习clk 现有时钟频率为50MHz 5寸 TFT屏对应800*480为33MHz 采用PLL锁相环设置时钟频率 由于 ACZ702 的按键按下是低电平 PLL 复位设置成低电平有效。 具体设置方法如下 本次实验只生成一个时钟频率但在本页设置中可以增加多个输出时钟 同频率不同相位、不同频率等 在后续实验中可以进行设置进行比较 本次未设置reset 、locked 2. VGA_CTRL.v 本程序中未对RGB888/RGB565进行设置 在xdc文件中进行说明
module VGA_CTRL(input clk ,input reset_n ,input [23:0]data ,output reg data_req ,output reg [11:0]H_addr , //当前扫描点的H坐标output reg [11:0]V_addr , //当前扫描点的V坐标output reg VGA_HS ,output reg VGA_VS , output reg VGA_BLK , //BLK表示的是data时间段output reg [23:0]VGA_RGB //{R[7:0]、G[7:0]、B[7:0]});include vga_parameter.vlocalparam VGA_HS_end H_Sync_Time - 1b1 ;localparam Hdat_begin H_Sync_Time H_Back_Porch H_Left_Border - 1b1 ;localparam Hdat_end H_Total_Time - H_Right_Border - H_Front_Porch - 1b1 ;localparam Hpixel_end H_Total_Time - 1b1 ;localparam VGA_VS_end V_Sync_Time - 1b1 ;localparam Vdat_begin V_Sync_Time V_Back_Porch V_Top_Border - 1b1 ;localparam Vdat_end V_Total_Time - V_Bottom_Border - V_Front_Porch - 1b1 ;localparam Vline_end V_Total_Time - 1b1 ;//行计数器reg[11:0]H_cnt;always(posedge clk or negedge reset_n)if(!reset_n) H_cnt 0 ;else if(H_cnt Hpixel_end)H_cnt 0 ;else H_cnt H_cnt 1b1 ;// 场计数器reg[11:0]V_cnt;always(posedge clk or negedge reset_n)if(!reset_n) V_cnt 0 ;else if(H_cnt Hpixel_end)if(V_cnt Vline_end)V_cnt 0 ;else V_cnt V_cnt 1b1 ;else V_cnt V_cnt ;// VGA_HSalways(posedge clk or negedge reset_n)if(!reset_n) VGA_HS 1;else if(H_cnt 0) VGA_HS 0;else if(H_cnt VGA_HS_end) VGA_HS 1;// VGA_VSalways(posedge clk or negedge reset_n)if(!reset_n) VGA_VS 1;else if(V_cnt 0) VGA_VS 0;else if(V_cnt VGA_VS_end) VGA_VS 1; // data_reqalways(posedge clk or negedge reset_n)if(!reset_n) data_req 0 ;else data_req ((H_cnt Hdat_begin)(H_cnt Hdat_end)(V_cnt Vdat_begin)(V_cnt Vdat_end)) ? 1 : 0;// VGA_BLKalways(posedge clk or negedge reset_n)if(!reset_n) VGA_BLK 0 ;else VGA_BLK data_req ;// assign VGA_RGB VGA_BLK? Data:0;// VGA_RGBalways(posedge clk )if(data_req) VGA_RGB data;elseVGA_RGB 0;//addressalways(posedge clk )if(data_req)beginH_addr H_cnt - Hdat_begin;V_addr V_cnt - Vdat_begin;endelsebeginH_addr 0;V_addr 0;end
endmodule3. VGA_CTRL_test.v
显示彩条
TFT_BL表示背光拉高即可
module VGA_CTRL_test(input clk , //50MHZ时钟input reset_n ,output VGA_CLK,output VGA_HS, //TFT行同步信号output VGA_VS, //TFT场同步信号output VGA_BLK, //VGA 场消隐信号output [23:0] VGA_RGB ,//TFT数据输出output TFT_BL //背光
);assign TFT_BL 1;reg [23:0]disp_data;wire [11:0]hcount;wire [11:0]vcount;wire Clk33M; wire Data_Req;assign VGA_CLK Clk33M;clk_vga vga_clk(.clk_out1(Clk25M),.clk_in1(clk)); VGA_CTRL VGA_CTRL(.clk(Clk33M), //系统输入时钟33MHZ.reset_n(reset_n),.data(disp_data), //待显示数据.data_req(Data_Req),.H_addr(hcount), //VGA行扫描计数器.V_addr(vcount), //VGA场扫描计数器.VGA_HS(VGA_HS), //VGA行同步信号.VGA_VS(VGA_VS), //VGA场同步信号.VGA_BLK(VGA_BLK) , //VGA 场消隐信号.VGA_RGB(VGA_RGB) //VGA数据输出);//定义颜色编码
localparam BLACK 24h000000, //黑色BLUE 24h0000FF, //蓝色RED 24hFF0000, //红色PURPPLE 24hFF00FF, //紫色GREEN 24h00FF00, //绿色CYAN 24h00FFFF, //青色YELLOW 24hFFFF00, //黄色WHITE 24hFFFFFF; //白色//定义每个像素块的默认显示颜色值
localparam R0_C0 BLACK, //第0行0列像素块R0_C1 BLUE, //第0行1列像素块R1_C0 RED, //第1行0列像素块R1_C1 PURPPLE,//第1行1列像素块R2_C0 GREEN, //第2行0列像素块R2_C1 CYAN, //第2行1列像素块R3_C0 YELLOW, //第3行0列像素块R3_C1 WHITE; //第3行1列像素块wire R0_act vcount 0 vcount 120; //正在扫描第0行wire R1_act vcount 120 vcount 240;//正在扫描第1行wire R2_act vcount 240 vcount 360;//正在扫描第2行wire R3_act vcount 360 vcount 480;//正在扫描第3行wire C0_act hcount 0 hcount 400; //正在扫描第0列wire C1_act hcount 400 hcount 800;//正在扫描第1列 wire R0_C0_actR0_act C0_act;//第0行0列像素块处于被扫描中标志信号wire R0_C1_actR0_act C1_act;//第0行1列像素块处于被扫描中标志信号wire R1_C0_actR1_act C0_act;//第1行0列像素块处于被扫描中标志信号wire R1_C1_actR1_act C1_act;//第1行1列像素块处于被扫描中标志信号wire R2_C0_actR2_act C0_act;//第2行0列像素块处于被扫描中标志信号wire R2_C1_actR2_act C1_act;//第2行1列像素块处于被扫描中标志信号wire R3_C0_actR3_act C0_act;//第3行0列像素块处于被扫描中标志信号wire R3_C1_actR3_act C1_act;//第3行1列像素块处于被扫描中标志信号always(*)case({R3_C1_act,R3_C0_act,R2_C1_act,R2_C0_act,R1_C1_act,R1_C0_act,R0_C1_act,R0_C0_act})8b0000_0001:disp_data R0_C0;8b0000_0010:disp_data R0_C1;8b0000_0100:disp_data R1_C0;8b0000_1000:disp_data R1_C1;8b0001_0000:disp_data R2_C0;8b0010_0000:disp_data R2_C1;8b0100_0000:disp_data R3_C0;8b1000_0000:disp_data R3_C1;default:disp_data R0_C0;endcaseendmodule4. VGA_CTRL_test.xdc 由于使用的是RGB565格式 设置中data 与 VGA_RGB 都为24位 此时在I/O中有几位是无需链接的会出现[DRC NSTD-1]
【Vivado常见问题】【DRC NSTD-1 DRC UCIO-1】无法生成bitstream部分管脚位置或电平未指定 - Vivado软件使用和设置 - 芯路恒电子技术论坛 - Powered by Discuz! (corecourse.cn)
xdc文件添加
set_property SEVERITY {Warning} [get_drc_checks NSTD-1] set_property SEVERITY {Warning} [get_drc_checks RTSTAT-1] set_property SEVERITY {Warning} [get_drc_checks UCIO-1]
set_property SEVERITY {Warning} [get_drc_checks NSTD-1]
set_property SEVERITY {Warning} [get_drc_checks RTSTAT-1]
set_property SEVERITY {Warning} [get_drc_checks UCIO-1]set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[23]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[22]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[21]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[20]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[19]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[18]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[17]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[16]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[15]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[14]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[13]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[12]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[11]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[10]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[9]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[8]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports reset_n]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_BLK]
set_property IOSTANDARD LVCMOS33 [get_ports TFT_BL]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_CLK]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_HS]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_VS]
set_property PACKAGE_PIN W20 [get_ports {VGA_RGB[23]}]
set_property PACKAGE_PIN W19 [get_ports {VGA_RGB[22]}]
set_property PACKAGE_PIN V17 [get_ports {VGA_RGB[21]}]
set_property PACKAGE_PIN V16 [get_ports {VGA_RGB[20]}]
set_property PACKAGE_PIN T15 [get_ports {VGA_RGB[19]}]
set_property PACKAGE_PIN V20 [get_ports {VGA_RGB[15]}]
set_property PACKAGE_PIN U17 [get_ports {VGA_RGB[14]}]
set_property PACKAGE_PIN V18 [get_ports {VGA_RGB[13]}]
set_property PACKAGE_PIN T16 [get_ports {VGA_RGB[12]}]
set_property PACKAGE_PIN R16 [get_ports {VGA_RGB[11]}]
set_property PACKAGE_PIN U19 [get_ports {VGA_RGB[10]}]
set_property PACKAGE_PIN Y19 [get_ports {VGA_RGB[7]}]
set_property PACKAGE_PIN Y18 [get_ports {VGA_RGB[5]}]
set_property PACKAGE_PIN W16 [get_ports {VGA_RGB[4]}]
set_property PACKAGE_PIN Y17 [get_ports {VGA_RGB[3]}]
set_property PACKAGE_PIN W14 [get_ports VGA_VS]
set_property PACKAGE_PIN U14 [get_ports VGA_HS]
set_property PACKAGE_PIN U15 [get_ports VGA_CLK]
set_property PACKAGE_PIN R17 [get_ports TFT_BL ]
set_property PACKAGE_PIN U18 [get_ports clk]
set_property PACKAGE_PIN H18 [get_ports reset_n]set_property PACKAGE_PIN W15 [get_ports VGA_BLK]5. 显示 6. RGB565 对后续使用TFT屏幕将VGA_CTRL改为VGA_CTRL_565进行使用 即 [23,0]改为[15,0]
6.1 VGA_CTRL_RGB565.v
module VGA_CTRL_RGB565(input clk ,input reset_n ,input [15:0]data ,output reg data_req ,output reg [11:0]H_addr , //当前扫描点的H坐标output reg [11:0]V_addr , //当前扫描点的V坐标output reg VGA_HS ,output reg VGA_VS , output reg VGA_BLK , //BLK表示的就是输出输出的时间段output reg [15:0]VGA_RGB //{R[5:0]、G[6:0]、B[5:0]});include vga_parameter.vlocalparam VGA_HS_end H_Sync_Time - 1b1 ;localparam Hdat_begin H_Sync_Time H_Back_Porch H_Left_Border - 1b1 ;localparam Hdat_end H_Total_Time - H_Right_Border - H_Front_Porch - 1b1 ;localparam Hpixel_end H_Total_Time - 1b1 ;localparam VGA_VS_end V_Sync_Time - 1b1 ;localparam Vdat_begin V_Sync_Time V_Back_Porch V_Top_Border - 1b1 ;localparam Vdat_end V_Total_Time - V_Bottom_Border - V_Front_Porch - 1b1 ;localparam Vline_end V_Total_Time - 1b1 ;//行计数器reg[11:0]H_cnt;always(posedge clk or negedge reset_n)if(!reset_n) H_cnt 0 ;else if(H_cnt Hpixel_end)H_cnt 0 ;else H_cnt H_cnt 1b1 ;// 场计数器reg[11:0]V_cnt;always(posedge clk or negedge reset_n)if(!reset_n) V_cnt 0 ;else if(H_cnt Hpixel_end)if(V_cnt Vline_end)V_cnt 0 ;else V_cnt V_cnt 1b1 ;else V_cnt V_cnt ;// VGA_HSalways(posedge clk or negedge reset_n)if(!reset_n) VGA_HS 1;else if(H_cnt 0) VGA_HS 0;else if(H_cnt VGA_HS_end) VGA_HS 1;// VGA_VSalways(posedge clk or negedge reset_n)if(!reset_n) VGA_VS 1;else if(V_cnt 0) VGA_VS 0;else if(V_cnt VGA_VS_end) VGA_VS 1; // data_reqalways(posedge clk or negedge reset_n)if(!reset_n) data_req 0 ;else data_req ((H_cnt Hdat_begin)(H_cnt Hdat_end)(V_cnt Vdat_begin)(V_cnt Vdat_end)) ? 1 : 0;// VGA_BLKalways(posedge clk or negedge reset_n)if(!reset_n) VGA_BLK 0 ;else VGA_BLK data_req ;// assign VGA_RGB VGA_BLK? Data:0;// VGA_RGBalways(posedge clk )if(data_req) VGA_RGB data;elseVGA_RGB 0;//addressalways(posedge clk )if(data_req)beginH_addr H_cnt - Hdat_begin;V_addr V_cnt - Vdat_begin;endelsebeginH_addr 0;V_addr 0;end
endmodule6.2 VGA_CTRL_RGB565.xdc set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[15]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[14]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[13]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[12]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[11]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[10]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[9]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[8]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {VGA_RGB[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports reset_n]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_BLK]
set_property IOSTANDARD LVCMOS33 [get_ports TFT_BL]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_CLK]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_HS]
set_property IOSTANDARD LVCMOS33 [get_ports VGA_VS]
set_property PACKAGE_PIN W20 [get_ports {VGA_RGB[15]}]
set_property PACKAGE_PIN W19 [get_ports {VGA_RGB[14]}]
set_property PACKAGE_PIN V17 [get_ports {VGA_RGB[13]}]
set_property PACKAGE_PIN V16 [get_ports {VGA_RGB[12]}]
set_property PACKAGE_PIN T15 [get_ports {VGA_RGB[11]}]
set_property PACKAGE_PIN V20 [get_ports {VGA_RGB[10]}]
set_property PACKAGE_PIN U17 [get_ports {VGA_RGB[9]}]
set_property PACKAGE_PIN V18 [get_ports {VGA_RGB[8]}]
set_property PACKAGE_PIN T16 [get_ports {VGA_RGB[7]}]
set_property PACKAGE_PIN R16 [get_ports {VGA_RGB[6]}]
set_property PACKAGE_PIN U19 [get_ports {VGA_RGB[5]}]
set_property PACKAGE_PIN Y19 [get_ports {VGA_RGB[4]}]
set_property PACKAGE_PIN W18 [get_ports {VGA_RGB[3]}]
set_property PACKAGE_PIN Y18 [get_ports {VGA_RGB[2]}]
set_property PACKAGE_PIN W16 [get_ports {VGA_RGB[1]}]
set_property PACKAGE_PIN Y17 [get_ports {VGA_RGB[0]}]
set_property PACKAGE_PIN W14 [get_ports VGA_VS]
set_property PACKAGE_PIN U14 [get_ports VGA_HS]
set_property PACKAGE_PIN U15 [get_ports VGA_CLK]
set_property PACKAGE_PIN R17 [get_ports TFT_BL]
set_property PACKAGE_PIN U18 [get_ports clk]
set_property PACKAGE_PIN H18 [get_ports reset_n]
set_property PACKAGE_PIN W15 [get_ports VGA_BLK]
