简易数字钟的设计verilog代码
时间: 2023-12-06 18:03:48 浏览: 59
以下是一个使用Verilog语言编写的简易数字钟的代码,包含时钟计数器、时分秒显示和控制模块。
```
module clock (
input clk,
input rst,
input [3:0] hr_set,
input [3:0] min_set,
input [3:0] sec_set,
output reg [6:0] seg1,
output reg [6:0] seg2,
output reg [6:0] seg3
);
reg [3:0] hr = 4'b0000;
reg [3:0] min = 4'b0000;
reg [3:0] sec = 4'b0000;
reg [3:0] hr_set_reg = 4'b0000;
reg [3:0] min_set_reg = 4'b0000;
reg [3:0] sec_set_reg = 4'b0000;
reg [3:0] count = 4'b0000;
reg [1:0] digit_sel = 2'b00;
// 1 Hz clock
always @(posedge clk or posedge rst) begin
if (rst) begin
count <= 4'b0000;
hr <= 4'b0000;
min <= 4'b0000;
sec <= 4'b0000;
hr_set_reg <= 4'b0000;
min_set_reg <= 4'b0000;
sec_set_reg <= 4'b0000;
digit_sel <= 2'b00;
end
else begin
if (count == 16) begin
count <= 4'b0000;
sec <= sec + 1;
if (sec == 10) begin
sec <= 4'b0000;
min <= min + 1;
if (min == 10) begin
min <= 4'b0000;
hr <= hr + 1;
if (hr == 10) begin
hr <= 4'b0000;
end
end
end
end
else begin
count <= count + 1;
end
end
end
// set time control module
always @(*) begin
if (hr_set != hr_set_reg) begin
hr_set_reg <= hr_set;
hr <= hr_set;
end
if (min_set != min_set_reg) begin
min_set_reg <= min_set;
min <= min_set;
end
if (sec_set != sec_set_reg) begin
sec_set_reg <= sec_set;
sec <= sec_set;
end
end
// 7-segment display control
always @(posedge clk) begin
case (digit_sel)
2'b00: begin
seg1 <= 7'b1000000; // digit off
seg2 <= 7'b1111111; // digit on
seg3 <= 7'b1111111; // digit on
digit_sel <= 2'b01; // next digit
end
2'b01: begin
seg1 <= 7'b1111111; // digit on
seg2 <= {7'b0000000, {4{min[3]}}}; // set digit to min[3]
seg3 <= {7'b0000000, {4{min[2]}}}; // set digit to min[2]
digit_sel <= 2'b10; // next digit
end
2'b10: begin
seg1 <= 7'b1111111; // digit on
seg2 <= {7'b0000000, {4{min[1]}}}; // set digit to min[1]
seg3 <= {7'b0000000, {4{min[0]}}}; // set digit to min[0]
digit_sel <= 2'b01; // next digit
end
endcase
end
endmodule
```
该代码使用了一个时钟计数器模块来实现计时功能,使用了一个控制模块来设置时间和控制显示,使用了一个7段数码管来显示时分秒。具体的实现方式可以根据需要进行修改和调整。