verilog 数字时钟设计led
时间: 2023-11-05 13:04:33 浏览: 38
以下是一个简单的 Verilog 数字时钟设计,可用于控制 LED 灯的亮灭:
```verilog
module digital_clock(
input clk,
output reg [3:0] hours,
output reg [5:0] minutes,
output reg [5:0] seconds,
output reg led
);
reg [3:0] count_10ms = 4'b0000;
reg [3:0] count_sec = 4'b0000;
reg [5:0] count_min = 6'b000000;
reg [3:0] count_hr = 4'b0000;
always @(posedge clk) begin
count_10ms <= count_10ms + 1;
if(count_10ms == 4'b1001) begin
count_10ms <= 4'b0000;
count_sec <= count_sec + 1;
if(count_sec == 4'b0111) begin
count_sec <= 4'b0000;
count_min <= count_min + 1;
if(count_min == 6'b011111) begin
count_min <= 6'b000000;
count_hr <= count_hr + 1;
end
end
end
end
always @(count_10ms, count_sec, count_min, count_hr) begin
if(count_hr >= 4'b1010) begin
hours <= 4'b0000;
end
else begin
hours <= count_hr;
end
minutes <= count_min[5:0];
seconds <= count_sec[3:0];
if(count_hr >= 4'b0010 && count_hr <= 4'b1010) begin
led <= 1'b1;
end
else begin
led <= 1'b0;
end
end
endmodule
```
在这个设计中,我们使用了一个时钟信号 `clk`,并使用了一些计数器来计算当前的小时、分钟和秒数。我们还使用了一个 LED 输出,当小时数在 2 到 10 之间时,LED 将会亮起。