finish

readme.md

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+## FPGA数码管静态显示

rtl/static_led.v

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+module static_led(
+    input   wire        sys_clk     ,
+    input   wire        sys_rst_n   ,
+
+    output  reg [7: 0]  seg_led     ,//数码管段选信号
+    output  reg [5: 0]  sel_led      //数码管位选信号
+);
+parameter MAX = 28'd50_000_000;//1s
+parameter NUM = 4'd10;//数10次
+reg [27: 0] cnt_s;
+reg [3: 0]  cnt_10;
+//cnt_s计数器设计
+always @(posedge sys_clk or negedge sys_rst_n) begin
+    if(!sys_rst_n)begin
+        cnt_s <= 28'd0;
+    end 
+    else if(cnt_s == MAX - 1'd1)begin
+        cnt_s <= 28'd0;
+    end 
+    else begin
+        cnt_s <= cnt_s + 1'd1;
+    end 
+end
+//cnt_10计数器设计
+always @(posedge sys_clk or negedge sys_rst_n)begin
+    if(!sys_rst_n)begin
+        cnt_10 <= 4'd0;
+    end 
+    //记到9并且1s结束
+    else if((cnt_10 == NUM - 1'd1) && (cnt_s == MAX - 1'd1))begin
+        cnt_10 <= 4'd0;
+    end 
+    //每计1s加1
+    else if(cnt_s == MAX - 1'd1)begin
+        cnt_10 <= cnt_10 + 1'd1;
+    end 
+    //其他时钟上升沿的时候保持
+    else begin
+        cnt_10 <= cnt_10;
+    end 
+end 
+//对sel_led信号进行约束
+always @(posedge sys_clk or negedge sys_rst_n)begin
+    if(!sys_rst_n)begin
+        sel_led <= 6'b111_111;//关闭6个数码管
+    end 
+    else begin
+        sel_led <= 6'b000_000;//开启6个数码管
+    end 
+end 
+//对seg_led信号进行约束
+always @(*)begin
+    case(cnt_10)
+        4'd0    :   seg_led = 8'b1100_0000;
+        4'd1    :   seg_led = 8'b1111_1001;  
+        4'd2    :   seg_led = 8'b1010_0100; 
+        4'd3    :   seg_led = 8'b1011_0000; 
+        4'd4    :   seg_led = 8'b1001_1001;             
+        4'd5    :   seg_led = 8'b1001_0010;         
+        4'd6    :   seg_led = 8'b1000_0010;         
+        4'd7    :   seg_led = 8'b1111_1000;         
+        4'd8    :   seg_led = 8'b1000_0000;  
+        4'd9    :   seg_led = 8'b1001_0000; 
+        default :   seg_led = 8'b1100_0000;
+    endcase
+end 
+endmodule 

tb/static_led_tb.v

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+`timescale 1ns/1ns
+module static_led_tb();
+parameter CYCLE = 20;
+reg sys_clk;
+reg sys_rst_n;
+wire [7: 0] seg_led;
+wire [5: 0] sel_led;
+always #(CYCLE / 2) sys_clk = ~sys_clk;
+initial begin
+    sys_clk     = 1'b0;
+    sys_rst_n   = 1'b0;
+    #(CYCLE);
+    sys_rst_n   = 1'b1;
+    #(CYCLE * 5 * 11);//1100ns
+    $stop;
+end
+
+
+static_led  static_led_inst(
+.sys_clk        (sys_clk  ),
+.sys_rst_n      (sys_rst_n),
+       
+.seg_led        (seg_led  ),//数码管段选信号
+.sel_led        (sel_led  ) //数码管位选信号
+);
+defparam static_led_inst.MAX = 5;//5 * 20 = 100ns
+endmodule 

tcl/static_led.tcl

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+#引脚参数导入脚本
+#时钟、复位
+set_location_assignment PIN_E1 -to sys_clk
+set_location_assignment PIN_E15 -to sys_rst_n
+
+#UART
+#set_location_assignment PIN_M2 -to uart_rx
+#set_location_assignment PIN_G1 -to uart_tx
+
+#LED
+#set_location_assignment PIN_D16 -to led[3]
+#set_location_assignment PIN_F15 -to led[2]
+#set_location_assignment PIN_F16 -to led[1]
+#set_location_assignment PIN_G15 -to led[0]
+
+#独立按键
+#set_location_assignment PIN_M15 -to key_in[2]
+#set_location_assignment PIN_M16 -to key_in[1]
+#set_location_assignment PIN_E16 -to key_in[0]
+
+#数码管选段
+set_location_assignment PIN_B7 -to seg_led[0]
+set_location_assignment PIN_A8 -to seg_led[1]
+set_location_assignment PIN_A6 -to seg_led[2]
+set_location_assignment PIN_B5 -to seg_led[3]
+set_location_assignment PIN_B6 -to seg_led[4]
+set_location_assignment PIN_A7 -to seg_led[5]
+set_location_assignment PIN_B8 -to seg_led[6]
+set_location_assignment PIN_A5 -to seg_led[7]
+
+#数码管片选w·
+set_location_assignment PIN_A4 -to sel_led[0]
+set_location_assignment PIN_B4 -to sel_led[1]
+set_location_assignment PIN_A3 -to sel_led[2]
+set_location_assignment PIN_B3 -to sel_led[3]
+set_location_assignment PIN_A2 -to sel_led[4]
+set_location_assignment PIN_B1 -to sel_led[5]
+
+#ds18b20
+# set_location_assignment PIN_E6 -to dq
+
+#蜂鸣器
+#set_location_assignment PIN_J1 -to buzzer
+
+#SDRAM
+    #地址
+#set_location_assignment PIN_T8    -to addr[0]  
+#set_location_assignment PIN_P9    -to addr[1]
+#set_location_assignment PIN_T9    -to addr[2]
+#set_location_assignment PIN_R9    -to addr[3]
+#set_location_assignment PIN_L16   -to addr[4]
+#set_location_assignment PIN_L15   -to addr[5]
+#set_location_assignment PIN_N16   -to addr[6]
+#set_location_assignment PIN_N15   -to addr[7]
+#set_location_assignment PIN_P16   -to addr[8]
+#set_location_assignment PIN_P15   -to addr[9]
+#set_location_assignment PIN_R8    -to addr[10]
+#set_location_assignment PIN_R16   -to addr[11]
+#set_location_assignment PIN_T15   -to addr[12]
+    
+    #数据
+#set_location_assignment PIN_R5    -to dq[0]
+#set_location_assignment PIN_T4    -to dq[1]
+#set_location_assignment PIN_T3    -to dq[2]
+#set_location_assignment PIN_R3    -to dq[3]
+#set_location_assignment PIN_T2    -to dq[4]
+#set_location_assignment PIN_R1    -to dq[5]
+#set_location_assignment PIN_P2    -to dq[6]
+#set_location_assignment PIN_P1    -to dq[7]
+#set_location_assignment PIN_R13   -to dq[8]
+#set_location_assignment PIN_T13   -to dq[9]
+#set_location_assignment PIN_R12   -to dq[10]
+#set_location_assignment PIN_T12   -to dq[11]
+#set_location_assignment PIN_T10   -to dq[12]
+#set_location_assignment PIN_R10   -to dq[13]
+#set_location_assignment PIN_T11   -to dq[14]
+#set_location_assignment PIN_R11   -to dq[15]
+
+    #bank
+#set_location_assignment PIN_R7   -to bank[0]
+#set_location_assignment PIN_T7   -to bank[1]
+
+    #dqm
+#set_location_assignment PIN_N2    -to dqm[0]
+#set_location_assignment PIN_T14   -to dqm[1]
+    
+    #时钟
+#set_location_assignment PIN_R4    -to sdram_clk
+
+    #控制信号
+#set_location_assignment PIN_R14   -to cke
+#set_location_assignment PIN_T6    -to cs_n
+#set_location_assignment PIN_R6    -to ras_n
+#set_location_assignment PIN_T5    -to cas_n
+#set_location_assignment PIN_N1    -to we_n
+
+
+#flash
+#set_location_assignment PIN_H2    -to miso   
+#set_location_assignment PIN_C1    -to mosi
+#set_location_assignment PIN_H1    -to sclk
+#set_location_assignment PIN_D2    -to cs_n
+
+#EEPROM 
+#set_location_assignment PIN_L2 -to sda
+#set_location_assignment PIN_L1 -to sclk
+
+#VGA
+
+#摄像头
+
+
+
+