七段数码管的动态扫描显示

1、实验四 七段数码管的动态扫描显示动态扫描显示与视觉暂留1 设计计数时钟设计一个分频器，对50MHz分频输出到计数器，让计数器以较慢的速度递增。module int_div(clk,div_out);input clk;output reg div_out;reg 31:0 clk_div;parameter CLK_FREQ = 'D50_000_000;/系统时钟50MHzparameter DCLK_FREQ = 'D10;/输出频率10/2Hzalways(posedge clk)beginif(clk_div < (CLK_FREQ/DCLK_FREQ)clk_d

2、iv <= clk_div + 1; elsebeginclk_div <= 0;div_out <= div_out;endendendmodule2.调用宏功能模块设计计数器见讲义。（自己设计BCD码计数器）3.数码管扫描显示程序设计（不含小数点）module segmain(clk,reset_n,datain,seg_data, seg_com);input clk;input reset_n;input 15:0 datain;output 7:0 seg_data;output 3:0 seg_com;reg 3:0 seg_com;reg 7:0 seg_dat

3、a;reg 3:0 bcd_led;reg 26:0 count;always(posedge clk)beginif (!reset_n)count <= 0;elsecount <= count + 1;endalways(count26:25 or datain)begincase(count26:25)2'b00:beginbcd_led = datain3:0;seg_com = 4'b1110;/end2'b01:beginbcd_led = datain7:4;seg_com = 4'b1101;/end2'b10:beginb

4、cd_led = datain11:8;seg_com = 4'b1011;/end2'b11:beginbcd_led = datain15:12;seg_com = 4'b0111;/endendcaseendalways(seg_com or bcd_led)begincase(bcd_led)4'h0:seg_data = 8'hc0;/04'h1:seg_data = 8'hf9;/14'h2:seg_data = 8'ha4;/24'h3:seg_data = 8'hb0;/34'h4:

5、seg_data = 8'h99;/44'h5:seg_data = 8'h92;/54'h6:seg_data = 8'h82;/64'h7:seg_data = 8'hf8;/74'h8:seg_data = 8'h80;/84'h9:seg_data = 8'h90;/94'ha:seg_data = 8'h88;/a4'hb:seg_data = 8'h83;/b4'hc:seg_data = 8'hc6;/c4'hd:seg_data = 8

6、'ha1;/d4'he:seg_data = 8'h86;/e4'hf:seg_data = 8'h8e;/fdefault:seg_data = 8'h80;/0endcaseendendmodule4设置芯片和管脚。设置芯片型号、配置芯片型号等内容。参照以下文件配置芯片管脚，并运行该tcl 脚本。#Setup.tcl - Setup pin setting for EP3C25-V5 main board set_global_assignment -name RESERVE_ALL_UNUSED_PINS "AS INPUT TR

7、I-STATED" set_global_assignment -name ENABLE_INIT_DONE_OUTPUT OFF set_location_assignment PIN_149 -to clk set_location_assignment PIN_90 -to reset #seg7led - 78LEDset_location_assignment PIN_148 -to 78ledcom0set_location_assignment PIN_147 -to 78ledcom1set_location_assignment PIN_160 -to 78ledc

8、om2set_location_assignment PIN_159 -to 78ledcom3# set_location_assignment PIN_162 -to 78ledcom4# set_location_assignment PIN_161 -to 78ledcom5# set_location_assignment PIN_166 -to 78ledcom6# set_location_assignment PIN_164 -to 78ledcom7set_location_assignment PIN_145 -to 78leddata0set_location_assig

9、nment PIN_143 -to 78leddata1set_location_assignment PIN_137 -to 78leddata2set_location_assignment PIN_139 -to 78leddata3set_location_assignment PIN_144 -to 78leddata4set_location_assignment PIN_146 -to 78leddata5set_location_assignment PIN_135 -to 78leddata6set_location_assignment PIN_142 -to 78leddata75. 编译下载后可见4个七段数码管显示计数值，按reset键则清零。6.实验要求：（1）实现显示0