quartus中用verilog语言编写一段1秒闪烁灯和7段数码管显示代码
时间: 2023-06-12 08:01:53 浏览: 307
好的,以下是用Verilog语言编写的一段实现1秒闪烁灯和7段数码管显示的代码:
module blink_LED_and_display(
input clk, //时钟信号输入
output reg [6:0] seg_out, //7段数码管输出
output reg led_out //LED输出
);
reg [26:0] counter;
reg flag;
always @(posedge clk) begin
if(counter==50000000) begin //计数器达到50000000即1秒
flag <= ~flag; //每一秒改变一次flag的值
counter <= 0; //计数器清零重新开始计数
end
else counter <= counter + 1; //计数器累加
end
assign seg_out = flag ? 7'b0000001 : 7'b1001111; //flag为1时数码管显示'0',为0时显示'9'
assign led_out = flag; //LED输出与flag相等,每秒闪烁一次
endmodule
这段代码中用到了计数器和标志位flag来实现1秒闪烁的功能,同时通过修改flag的值来控制7段数码管的显示和LED的闪烁。
相关问题
用quartus verilog语言编写一段1秒闪烁灯和七段数码管动态显示代码
好的,以下是Quartus Verilog语言编写的一段1秒闪烁灯和七段数码管动态显示代码:
```
module blink_and_display(
input clk,
output reg [6:0] seg,
output reg [7:0] anode,
output reg led
);
reg [26:0] count;
reg [3:0] digit;
reg [3:0] digit_num;
always @(posedge clk) begin
count <= count + 1;
if (count == 50000000) begin // 1 second
count <= 0;
led <= ~led; // toggle the LED
digit_num <= digit_num + 1; // increment the digit number
if (digit_num == 5) begin // wrap around
digit_num <= 1;
end
end
case (digit_num)
1: begin // digit 1
case (digit)
0: seg <= 7'b1000000; // display 0
1: seg <= 7'b1111001; // display 1
2: seg <= 7'b0100100; // display 2
3: seg <= 7'b0110000; // display 3
4: seg <= 7'b0011001; // display 4
5: seg <= 7'b0010010; // display 5
6: seg <= 7'b0000010; // display 6
7: seg <= 7'b1111000; // display 7
8: seg <= 7'b0000000; // display 8 (blank)
9: seg <= 7'b0010000; // display 9
default: seg <= 7'b0000000; // blank
endcase
anode <= 8'b11101111; // turn on digit 1
end
2: begin // digit 2
case (digit)
0: seg <= 7'b1000000; // display 0
1: seg <= 7'b1111001; // display 1
2: seg <= 7'b0100100; // display 2
3: seg <= 7'b0110000; // display 3
4: seg <= 7'b0011001; // display 4
5: seg <= 7'b0010010; // display 5
6: seg <= 7'b0000010; // display 6
7: seg <= 7'b1111000; // display 7
8: seg <= 7'b0000000; // display 8 (blank)
9: seg <= 7'b0010000; // display 9
default: seg <= 7'b0000000; // blank
endcase
anode <= 8'b11011111; // turn on digit 2
end
3: begin // digit 3
seg <= 7'b0000000; // blank
anode <= 8'b10111111; // turn on digit 3
end
4: begin // digit 4
seg <= 7'b0000000; // blank
anode <= 8'b01111111; // turn on digit 4
end
default: begin // blank
seg <= 7'b0000000;
anode <= 8'b11111111;
end
endcase
end
endmodule
```
这段代码实现了一个1秒钟闪烁的LED和循环显示数字的七段数码管。在输出端口`led`处,我们使用了一个寄存器来存储LED的状态,初始值设为0。每当计数器`count`达到50000000时,计数器被清零,LED的状态进行取反,同时将显示的数字切换到下一个。使用`digit_num`变量表示当前显示的数字是哪一位,使用`digit`变量表示这一位显示的具体数字。在`case`语句中,我们通过将`seg`和`anode`的值分别指定为七段数码管应该显示的值和应该亮的位数,来实现了循环显示数字的效果。在每个数字被显示的间隔期间,其他位都会被设置为空白。
quartus 用verilog语言写一段1秒闪烁灯和每秒加1的8位七段数码管共阴极动态显示的代码
好,以下是Verilog语言实现1秒闪烁灯和每秒加1的8位七段数码管共阴极动态显示的代码:
```
module Blink_Counter(
input clk,
output reg [7:0] seg_out
);
reg [23:0] count;
reg led;
reg [3:0] seg_data;
reg [1:0] seg_sel;
always@(posedge clk) begin
count <= count + 1;
if(count == 24000000) begin //1秒钟
count <= 0;
led <= ~led; //闪烁灯
seg_data <= seg_data + 1; //每秒加1
if(seg_data == 10) seg_data <= 0;
end
if(count % 600000 == 0) begin //每24Hz更新数码管数据
case(seg_sel)
2'b00: seg_out <= {~seg_data[0], seg_data[0], seg_data[0], seg_data[1], 1'b0, 1'b0, 1'b0, 1'b0}; //个位数码管
2'b01: seg_out <= {~seg_data[2], seg_data[2], seg_data[2], seg_data[3], 1'b0, 1'b0, 1'b0, 1'b0}; //十位数码管
2'b10: seg_out <= {~seg_data[4], seg_data[4], seg_data[4], seg_data[5], 1'b0, 1'b0, 1'b0, 1'b0}; //百位数码管
2'b11: seg_out <= {~seg_data[6], seg_data[6], seg_data[6], seg_data[7], 1'b0, 1'b0, 1'b0, 1'b0}; //千位数码管
endcase
seg_sel <= seg_sel + 1;
if(seg_sel == 2'b100) seg_sel <= 0;
end
end
assign led = 1'b0; //初始化为灭灯状态
assign seg_out = 8'b11111111; //初始化为不显示任何数码
endmodule
```
上述代码实现了一个计数器,每秒钟闪烁一次 LED 灯,每秒钟让 8 位七段数码管的显示值加 1。其中,`count` 记录了时钟信号上升沿的数量,通过计算可以得到从上电到当前时刻经过的时间(时钟频率为 24MHz),当时间增加到 1 秒钟时,分别对 LED 灯和数码管数据进行处理。数码管采用共阴极动态扫描方式,每 24Hz 刷新一次数据。
代码中涉及到了 Verilog 的时序逻辑和组合逻辑。时序逻辑采用 `always@(posedge clk)` 声明,表示当时钟信号上升沿到达时,执行其中的代码。组合逻辑采用 `assign` 声明,表示逻辑表达式实时计算并赋值给变量。
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