74hc595驱动数码管版本一顶层例化文件module seg7x8(input CLOCK_50, // 板载50MHz时钟input Q_KEY, // 板载按键RSToutput [7:0] SEG7_SEG, // 七段数码管 段脚 output [2:0] SEG7_SEL // 七段数码管 待译位脚);// 显示效果：// -------------------------// |1 |2.|3 |4 | |B |C |D |// -------------------------seg7x8_drive u0(.i_clk (CLOCK_50),.i_rst_n (Q_KEY),.i_turn_off (8'b0000_1000), // 熄灭位[2进制][此处取第3位.i_dp (8'b0100_0000), // 小数点位[2进制][此处取第6位 .i_data (32'h1234_ABCD), // 欲显数据[16进制].o_seg(SEG7_SEG),.o_sel(SEG7_SEL));endmodule驱动文件module seg7x8_drive(input i_clk,input i_rst_n,input [7:0] i_turn_off, // 熄灭位[2进制input [7:0] i_dp, // 小数点位[2进制input [31:0] i_data, // 欲显数据[16进制output [7:0] o_seg, // 段脚output [2:0] o_sel // 使用74HC138译出位脚 );//++++++++++++++++++++++++++++++++++++++// 分频部分 开始//++++++++++++++++++++++++++++++++++++++reg [16:0] cnt; // 计数子always @ (posedge i_clk, negedge i_rst_n)if (!i_rst_n)cnt <= 0;elsecnt <= cnt + 1'b1;wire seg7_clk = cnt[16]; // (2^17/50M = 2.6114)ms //--------------------------------------// 分频部分 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 动态扫描, 生成seg7_addr 开始//++++++++++++++++++++++++++++++++++++++reg [2:0] seg7_addr; // 第几个seg7always @ (posedge seg7_clk, negedge i_rst_n)if (!i_rst_n)seg7_addr <= 0;elseseg7_addr <= seg7_addr + 1'b1;//--------------------------------------// 动态扫描, 生成seg7_addr 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 译出位码 开始//++++++++++++++++++++++++++++++++++++++reg [2:0] o_sel_r; // 位选码寄存器// 开发板上SEG7的方向是低位在左，高位在右// 但是实际上我们看数的方向是高位在左，低位在右// 故此处将第0位对应DIG[7]，第7位对应DIG[0]alwayscase (seg7_addr)0 : o_sel_r = 3'b111; // SEG7[7]1 : o_sel_r = 3'b110; // SEG7[6]2 : o_sel_r = 3'b101; // SEG7[5]3 : o_sel_r = 3'b100; // SEG7[4]4 : o_sel_r = 3'b011; // SEG7[3]5 : o_sel_r = 3'b010; // SEG7[2]6 : o_sel_r = 3'b001; // SEG7[1]7 : o_sel_r = 3'b000; // SEG7[0]endcase//--------------------------------------// 根据seg7_addr, 译出位码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 选择熄灭码 开始//++++++++++++++++++++++++++++++++++++++reg turn_off_r; // 熄灭码alwayscase (seg7_addr)0 : turn_off_r = i_turn_off[0];1 : turn_off_r = i_turn_off[1];2 : turn_off_r = i_turn_off[2];3 : turn_off_r = i_turn_off[3];4 : turn_off_r = i_turn_off[4];5 : turn_off_r = i_turn_off[5];6 : turn_off_r = i_turn_off[6];7 : turn_off_r = i_turn_off[7];endcase//--------------------------------------// 根据seg7_addr, 选择熄灭码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 选择小数点码 开始//++++++++++++++++++++++++++++++++++++++reg dp_r; // 小数点码alwayscase (seg7_addr)0 : dp_r = i_dp[0];1 : dp_r = i_dp[1];2 : dp_r = i_dp[2];3 : dp_r = i_dp[3];4 : dp_r = i_dp[4];5 : dp_r = i_dp[5];6 : dp_r = i_dp[6];7 : dp_r = i_dp[7];endcase//--------------------------------------// 根据seg7_addr, 选择小数点码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 选择待译段码 开始//++++++++++++++++++++++++++++++++++++++reg [3:0] seg_data_r; // 待译段码alwayscase (seg7_addr)0 : seg_data_r = i_data[3:0];1 : seg_data_r = i_data[7:4];2 : seg_data_r = i_data[11:8];3 : seg_data_r = i_data[15:12];4 : seg_data_r = i_data[19:16];5 : seg_data_r = i_data[23:20];6 : seg_data_r = i_data[27:24];7 : seg_data_r = i_data[31:28];endcase//--------------------------------------// 根据seg7_addr, 选择待译段码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据熄灭码/小数点码/待译段码// 译出段码，开始//++++++++++++++++++++++++++++++++++++++reg [7:0] o_seg_r; // 段码寄存器/** 0* -------* | |* 5| 6 |1* -------* | |* 4| |2* ------- . 7* 3*/// 共阳always @ (posedge i_clk, negedge i_rst_n)if (!i_rst_n)o_seg_r <= 8'hFF; // 送熄灭码 elseif(turn_off_r) // 送熄灭码 o_seg_r <= 8'hFF;elseif(!dp_r)case(seg_data_r) // 无小数点 4'h0 : o_seg_r <= 8'hC0;4'h1 : o_seg_r <= 8'hF9;4'h2 : o_seg_r <= 8'hA4;4'h3 : o_seg_r <= 8'hB0;4'h4 : o_seg_r <= 8'h99;4'h5 : o_seg_r <= 8'h92;4'h6 : o_seg_r <= 8'h82;4'h7 : o_seg_r <= 8'hF8;4'h8 : o_seg_r <= 8'h80;4'h9 : o_seg_r <= 8'h90;4'hA : o_seg_r <= 8'h88;4'hB : o_seg_r <= 8'h83;4'hC : o_seg_r <= 8'hC6;4'hD : o_seg_r <= 8'hA1;4'hE : o_seg_r <= 8'h86;4'hF : o_seg_r <= 8'h8E;endcaseelsecase(seg_data_r) // 加小数点4'h0 : o_seg_r <= 8'hC0 ^ 8'h80;4'h1 : o_seg_r <= 8'hF9 ^ 8'h80;4'h2 : o_seg_r <= 8'hA4 ^ 8'h80;4'h3 : o_seg_r <= 8'hB0 ^ 8'h80;4'h4 : o_seg_r <= 8'h99 ^ 8'h80;4'h5 : o_seg_r <= 8'h92 ^ 8'h80;4'h6 : o_seg_r <= 8'h82 ^ 8'h80;4'h7 : o_seg_r <= 8'hF8 ^ 8'h80;4'h8 : o_seg_r <= 8'h80 ^ 8'h80;4'h9 : o_seg_r <= 8'h90 ^ 8'h80;4'hA : o_seg_r <= 8'h88 ^ 8'h80;4'hB : o_seg_r <= 8'h83 ^ 8'h80;4'hC : o_seg_r <= 8'hC6 ^ 8'h80;4'hD : o_seg_r <= 8'hA1 ^ 8'h80;4'hE : o_seg_r <= 8'h86 ^ 8'h80;4'hF : o_seg_r <= 8'h8E ^ 8'h80;endcase//--------------------------------------// 根据熄灭码/小数点码/待译段码// 译出段码，结束//--------------------------------------assign o_sel = o_sel_r; // 寄存器输出位选码 assign o_seg = o_seg_r; // 寄存器输出段码endmodule版本2顶层例化文件module seg7x8(input CLOCK_50, // 板载50MHz时钟input [1:1] KEY, // KEY[1]output [7:0] SEG7_SEG, // 七段数码管 段脚 output [7:0] SEG7_DIG // 七段数码管 位脚);// 显示效果：// -------------------------// |1 |2.|3 |4 | |B |C |D |// -------------------------seg7x8_drive u0(.i_clk (CLOCK_50),.i_rst_n (KEY),.i_turn_off (8'b0000_1000), // 熄灭位[2进制][此处取第3位.i_dp (8'b0100_0000), // 小数点位[2进制][此处取第6位 .i_data (32'h1234_ABCD), // 欲显数据[16进制].o_seg (SEG7_SEG),.o_dig (SEG7_DIG));endmodule驱动文件module seg7x8_drive(input i_clk,input i_rst_n,input [7:0] i_turn_off, // 熄灭位[2进制input [7:0] i_dp, // 小数点位[2进制input [31:0] i_data, // 欲显数据[16进制output [7:0] o_seg, // 段脚output [7:0] o_dig // 位脚);//++++++++++++++++++++++++++++++++++++++// 分频部分 开始//++++++++++++++++++++++++++++++++++++++reg [16:0] cnt; // 计数子always @ (posedge i_clk, negedge i_rst_n)if (!i_rst_n)cnt <= 0;elsecnt <= cnt + 1'b1;wire seg7_clk = cnt[16]; // (2^17/50M = 2.6114)ms //--------------------------------------// 分频部分 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 动态扫描, 生成seg7_addr 开始//++++++++++++++++++++++++++++++++++++++reg [2:0] seg7_addr; // 第几个seg7always @ (posedge seg7_clk, negedge i_rst_n)if (!i_rst_n)seg7_addr <= 0;elseseg7_addr <= seg7_addr + 1'b1;//--------------------------------------// 动态扫描, 生成seg7_addr 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 译出位码 开始//++++++++++++++++++++++++++++++++++++++reg [7:0] o_dig_r; // 位码寄存器// 开发板上SEG7的方向是低位在左，高位在右// 但是实际上我们看数的方向是高位在左，低位在右// 故此处将第0位对应DIG[7]，第7位对应DIG[0]alwayscase (seg7_addr)0 : o_dig_r = 8'b0000_0001;1 : o_dig_r = 8'b0000_0010;2 : o_dig_r = 8'b0000_0100;3 : o_dig_r = 8'b0000_1000;4 : o_dig_r = 8'b0001_0000;5 : o_dig_r = 8'b0010_0000;6 : o_dig_r = 8'b0100_0000;7 : o_dig_r = 8'b1000_0000;endcase//--------------------------------------// 根据seg7_addr, 译出位码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 选择熄灭码 开始//++++++++++++++++++++++++++++++++++++++reg turn_off_r; // 熄灭码alwayscase (seg7_addr)0 : turn_off_r = i_turn_off[0];1 : turn_off_r = i_turn_off[1];2 : turn_off_r = i_turn_off[2];3 : turn_off_r = i_turn_off[3];4 : turn_off_r = i_turn_off[4];5 : turn_off_r = i_turn_off[5];6 : turn_off_r = i_turn_off[6];7 : turn_off_r = i_turn_off[7];endcase//--------------------------------------// 根据seg7_addr, 选择熄灭码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 选择小数点码 开始//++++++++++++++++++++++++++++++++++++++reg dp_r; // 小数点码alwayscase (seg7_addr)0 : dp_r = i_dp[0];1 : dp_r = i_dp[1];2 : dp_r = i_dp[2];3 : dp_r = i_dp[3];4 : dp_r = i_dp[4];5 : dp_r = i_dp[5];6 : dp_r = i_dp[6];7 : dp_r = i_dp[7];endcase//--------------------------------------// 根据seg7_addr, 选择小数点码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据seg7_addr, 选择待译段码 开始//++++++++++++++++++++++++++++++++++++++reg [3:0] seg_data_r; // 待译段码alwayscase (seg7_addr)0 : seg_data_r = i_data[3:0];1 : seg_data_r = i_data[7:4];2 : seg_data_r = i_data[11:8];3 : seg_data_r = i_data[15:12];4 : seg_data_r = i_data[19:16];5 : seg_data_r = i_data[23:20];6 : seg_data_r = i_data[27:24];7 : seg_data_r = i_data[31:28];endcase//--------------------------------------// 根据seg7_addr, 选择待译段码 结束//--------------------------------------//++++++++++++++++++++++++++++++++++++++// 根据熄灭码/小数点码/待译段码// 译出段码，开始//++++++++++++++++++++++++++++++++++++++reg [7:0] o_seg_r; // 段码寄存器/** 0* -------* | |* 5| 6 |1* -------* | |* 4| |2* ------- . 7* 3*/// 共阳always @ (posedge i_clk, negedge i_rst_n)if (!i_rst_n)o_seg_r <= 8'hFF; // 送熄灭码 elseif(turn_off_r) // 送熄灭码 o_seg_r <= 8'hFF;elseif(!dp_r)case(seg_data_r) // 无小数点 4'h0 : o_seg_r <= 8'hC0;4'h1 : o_seg_r <= 8'hF9;4'h2 : o_seg_r <= 8'hA4;4'h3 : o_seg_r <= 8'hB0;4'h4 : o_seg_r <= 8'h99;4'h5 : o_seg_r <= 8'h92;4'h6 : o_seg_r <= 8'h82;4'h7 : o_seg_r <= 8'hF8;4'h8 : o_seg_r <= 8'h80;4'h9 : o_seg_r <= 8'h90;4'hA : o_seg_r <= 8'h88;4'hB : o_seg_r <= 8'h83;4'hC : o_seg_r <= 8'hC6;4'hD : o_seg_r <= 8'hA1;4'hE : o_seg_r <= 8'h86;4'hF : o_seg_r <= 8'h8E;endcaseelsecase(seg_data_r) // 加小数点4'h0 : o_seg_r <= 8'hC0 ^ 8'h80;4'h1 : o_seg_r <= 8'hF9 ^ 8'h80;4'h2 : o_seg_r <= 8'hA4 ^ 8'h80;4'h3 : o_seg_r <= 8'hB0 ^ 8'h80;4'h4 : o_seg_r <= 8'h99 ^ 8'h80;4'h5 : o_seg_r <= 8'h92 ^ 8'h80;4'h6 : o_seg_r <= 8'h82 ^ 8'h80;4'h7 : o_seg_r <= 8'hF8 ^ 8'h80;4'h8 : o_seg_r <= 8'h80 ^ 8'h80;4'h9 : o_seg_r <= 8'h90 ^ 8'h80;4'hA : o_seg_r <= 8'h88 ^ 8'h80;4'hB : o_seg_r <= 8'h83 ^ 8'h80;4'hC : o_seg_r <= 8'hC6 ^ 8'h80;4'hD : o_seg_r <= 8'hA1 ^ 8'h80;4'hE : o_seg_r <= 8'h86 ^ 8'h80;4'hF : o_seg_r <= 8'h8E ^ 8'h80;endcase//--------------------------------------// 根据熄灭码/小数点码/待译段码// 译出段码，结束//--------------------------------------/** | c[1]* b[in] -|* | e[out]*/assign o_dig = ~o_dig_r; // 寄存器输出位码 assign o_seg = o_seg_r; // 寄存器输出段码endmodul。