标签：style blog color os ar sp div log ad
1 `timescale 1ns/1ps 2 module adc_dis( 3 clk , 4 rst_n , 5 sm_seg , 6 sm_bit 7 ); 8 9 input clk;//50HZ 10 input rst_n; 11 output[7:0] sm_seg;//段选 12 output[5:0] sm_bit;//位选 13 14 reg [7:0] sm_seg; 15 reg [5:0] sm_bit; 16 reg [31:0] count; 17 reg [31:0] count2; 18 reg [3:0] i;//数码管位数 19 reg clk1, clk2; 20 reg [3:0]ge,shi,bai,qian,wan,swan; 21 reg [7:0] ge_reg,shi_reg,bai_reg,qian_reg,wan_reg,swan_reg; 22 23 parameter//共阳极 24 led_GYA0 = 8‘hc0, //‘0‘ 25 led_GYA1 = 8‘hf9, //‘1‘ 26 led_GYA2 = 8‘ha4, //‘2‘ 27 led_GYA3 = 8‘hb0, //‘3‘ 28 led_GYA4 = 8‘h99, //‘4‘ 29 led_GYA5 = 8‘h92, //‘5‘ 30 led_GYA6 = 8‘h82, //‘6‘ 31 led_GYA7 = 8‘hf8, //‘7‘ 32 led_GYA8 = 8‘h80, //‘8‘ 33 led_GYA9 = 8‘h90; //‘9‘ 34 35 /****************分频1S*****************/ 36 always@(posedge clk or negedge rst_n) begin 37 if(!rst_n) begin //同步复位 38 clk2 <= 1‘b0; 39 count2 <= 32‘b0; 40 end 41 else if(count2 == 32‘d249999)begin //高低电平转换 5*10^7*20ns=10^9ns=1s 42 clk2 <= ~clk2; 43 count2 <= 32‘b0; 44 end 45 else begin 46 count2 <= count2 + 1‘b1; //计数 47 end 48 end 49 50 /******************计数*********************/ 51 always@(posedge clk2 or negedge rst_n) begin//个位处理 52 if(!rst_n) begin 53 ge <= 4‘b0000; 54 shi <= 4‘b0000; 55 bai <= 4‘b0000; 56 qian <= 4‘b0000; 57 wan <= 4‘b0000; 58 swan <= 4‘b0000; 59 end 60 else if(ge == 4‘b1010) begin //个位等于10 61 ge = 4‘b0000; 62 shi = shi + 1‘b1; 63 if(shi == 4‘b1010) begin//十位等于10 64 shi = 4‘b0000; 65 bai = bai + 1‘b1; 66 if(bai == 4‘b1010) begin//百位等于10 67 bai = 4‘b0000; 68 qian = qian + 1‘b1; 69 if(qian == 4‘b1010) begin//千位等于10 70 qian = 4‘b0000; 71 wan = wan + 1‘b1; 72 if(wan == 4‘b1010) begin//万位等于10 73 wan = 4‘b0000; 74 swan = swan + 1‘b1; 75 if(swan == 4‘b1010) begin//十万位等于10 76 ge <= 4‘b0000; 77 shi <= 4‘b0000; 78 bai <= 4‘b0000; 79 qian <= 4‘b0000; 80 wan <= 4‘b0000; 81 swan <= 4‘b0000; 82 end 83 end 84 end 85 end 86 end 87 end 88 else begin 89 ge <= ge + 1‘b1; 90 end 91 92 end 93 94 /***************编码*******************/ 95 always@(posedge clk2 or negedge rst_n) begin 96 case(ge) 97 4‘b0000: ge_reg <= led_GYA0; 98 4‘b0001: ge_reg <= led_GYA1; 99 4‘b0010: ge_reg <= led_GYA2; 100 4‘b0011: ge_reg <= led_GYA3; 101 4‘b0100: ge_reg <= led_GYA4; 102 4‘b0101: ge_reg <= led_GYA5; 103 4‘b0110: ge_reg <= led_GYA6; 104 4‘b0111: ge_reg <= led_GYA7; 105 4‘b1000: ge_reg <= led_GYA8; 106 4‘b1001: ge_reg <= led_GYA9; 107 default: ge_reg <= led_GYA0; 108 endcase 109 110 case(shi) 111 4‘b0000: shi_reg <= led_GYA0; 112 4‘b0001: shi_reg <= led_GYA1; 113 4‘b0010: shi_reg <= led_GYA2; 114 4‘b0011: shi_reg <= led_GYA3; 115 4‘b0100: shi_reg <= led_GYA4; 116 4‘b0101: shi_reg <= led_GYA5; 117 4‘b0110: shi_reg <= led_GYA6; 118 4‘b0111: shi_reg <= led_GYA7; 119 4‘b1000: shi_reg <= led_GYA8; 120 4‘b1001: shi_reg <= led_GYA9; 121 default: shi_reg <= led_GYA0; 122 endcase 123 124 case(bai) 125 4‘b0000: bai_reg <= led_GYA0; 126 4‘b0001: bai_reg <= led_GYA1; 127 4‘b0010: bai_reg <= led_GYA2; 128 4‘b0011: bai_reg <= led_GYA3; 129 4‘b0100: bai_reg <= led_GYA4; 130 4‘b0101: bai_reg <= led_GYA5; 131 4‘b0110: bai_reg <= led_GYA6; 132 4‘b0111: bai_reg <= led_GYA7; 133 4‘b1000: bai_reg <= led_GYA8; 134 4‘b1001: bai_reg <= led_GYA9; 135 default: bai_reg <= led_GYA0; 136 endcase 137 138 case(qian) 139 4‘b0000: qian_reg <= led_GYA0; 140 4‘b0001: qian_reg <= led_GYA1; 141 4‘b0010: qian_reg <= led_GYA2; 142 4‘b0011: qian_reg <= led_GYA3; 143 4‘b0100: qian_reg <= led_GYA4; 144 4‘b0101: qian_reg <= led_GYA5; 145 4‘b0110: qian_reg <= led_GYA6; 146 4‘b0111: qian_reg <= led_GYA7; 147 4‘b1000: qian_reg <= led_GYA8; 148 4‘b1001: qian_reg <= led_GYA9; 149 default: qian_reg <= led_GYA0; 150 endcase 151 152 case(wan) 153 4‘b0000: wan_reg <= led_GYA0; 154 4‘b0001: wan_reg <= led_GYA1; 155 4‘b0010: wan_reg <= led_GYA2; 156 4‘b0011: wan_reg <= led_GYA3; 157 4‘b0100: wan_reg <= led_GYA4; 158 4‘b0101: wan_reg <= led_GYA5; 159 4‘b0110: wan_reg <= led_GYA6; 160 4‘b0111: wan_reg <= led_GYA7; 161 4‘b1000: wan_reg <= led_GYA8; 162 4‘b1001: wan_reg <= led_GYA9; 163 default: wan_reg <= led_GYA0; 164 endcase 165 166 case(swan) 167 4‘b0000: swan_reg <= led_GYA0; 168 4‘b0001: swan_reg <= led_GYA1; 169 4‘b0010: swan_reg <= led_GYA2; 170 4‘b0011: swan_reg <= led_GYA3; 171 4‘b0100: swan_reg <= led_GYA4; 172 4‘b0101: swan_reg <= led_GYA5; 173 4‘b0110: swan_reg <= led_GYA6; 174 4‘b0111: swan_reg <= led_GYA7; 175 4‘b1000: swan_reg <= led_GYA8; 176 4‘b1001: swan_reg <= led_GYA9; 177 default: swan_reg <= led_GYA0; 178 endcase 179 end 180 181 /****************分频1MS*****************/ 182 always@(posedge clk or negedge rst_n) begin 183 if(!rst_n) begin //同步复位 184 clk1 <= 1‘b0; 185 count <= 1‘b0; 186 end 187 else if(count == 32‘d24999)begin //高低电平转换 25000*20=500000ns=0.5ms 188 clk1 <= ~clk1; 189 count <= 1‘b0; 190 end 191 else begin 192 count <= count + 1‘b1; //计数 193 end 194 end 195 196 /************数码管位数循环****************/ 197 always@(posedge clk1 or negedge rst_n) begin 198 199 if(!rst_n) begin //同步复位 200 i <= 4‘b0000; 201 end 202 else if(i == 4‘b0101) begin 203 i <= 4‘b0000; 204 end 205 else begin 206 i <= i + 1‘b1; 207 end 208 end 209 210 /************数码管显示****************/ 211 always@(posedge clk1 or negedge rst_n) begin 212 case(i) 213 4‘b0000: begin sm_seg <= ge_reg; sm_bit <= 6‘b11_1110; end 214 4‘b0001: begin sm_seg <= shi_reg; sm_bit <= 6‘b11_1101; end 215 4‘b0010: begin sm_seg <= bai_reg; sm_bit <= 6‘b11_1011; end 216 4‘b0011: begin sm_seg <= qian_reg; sm_bit <= 6‘b11_0111; end 217 4‘b0100: begin sm_seg <= wan_reg; sm_bit <= 6‘b10_1111; end 218 4‘b0101: begin sm_seg <= swan_reg; sm_bit <= 6‘b01_1111; end 219 default: begin sm_seg <= led_GYA0; sm_bit <= 6‘b11_1111; end 220 endcase 221 end 222 223 endmodule
标签：style blog color os ar sp div log ad
原文地址：http://www.cnblogs.com/chasing/p/4044889.html
