这段代码报错clk_out1没有声明怎么修改:LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; PORT(clk:IN STD_LOGIC; clk_out1:out STD_LOGIC; clk_out10:OUT STD_LOGIC); END free_4; ARCHITECTURE fwm OF free_3 IS CONSTANT m : INTEGER:= 25000000; CONSTANT n : INTEGER:= 2500000; SIGNAL tmp :STD_LOGIC; SIGNAL tnp :STD_LOGIC; BEGIN PROCESS(clk,tmp) VARIABLE cout : INTEGER:=0; BEGIN IF clk'EVENT AND clk='1'THEN cout:=cout+1; IF cout<= THEN tmp<='0'; ELSIF cout<m*2 THEN tmp<='1'; ELSE cout:=0; END IF; END IF; END PROCESS; clk_cout1<=tmp; PROCESS(clk, tnp) VARIABLE cout : INTEGER:=0; BEGIN IF clk'EVENT AND clk='1' THEN cout:=cout+1; IF cout<=n THEN tnp<='0'; ELSIF cout<n*20 THEN tnp<='1'; ELSE cout:=0; END IF; END IF; END PROCESS; clk_out10<=tnp; END fwm;
时间: 2023-10-12 08:04:36 浏览: 98
clk_div.zip_clock divider_in
在代码中,`clk_cout1` 出现在了 PORT 中,但是在 ARCHITECTURE 中没有定义,因此会报错。需要在 ARCHITECTURE 中定义 `clk_cout1` 信号,例如:
```
ARCHITECTURE fwm OF free_3 IS
CONSTANT m : INTEGER:= 25000000;
CONSTANT n : INTEGER:= 2500000;
SIGNAL tmp :STD_LOGIC;
SIGNAL tnp :STD_LOGIC;
SIGNAL clk_cout1 : STD_LOGIC; -- 添加这一行
BEGIN
PROCESS(clk,tmp)
VARIABLE cout : INTEGER:=0;
BEGIN
IF clk'EVENT AND clk='1'THEN
cout:=cout+1;
IF cout<= THEN
tmp<='0';
ELSIF cout<m*2 THEN
tmp<='1';
ELSE
cout:=0;
END IF;
END IF;
END PROCESS;
clk_cout1<=tmp; -- 修改这一行
PROCESS(clk, tnp)
VARIABLE cout : INTEGER:=0;
BEGIN
IF clk'EVENT AND clk='1' THEN
cout:=cout+1;
IF cout<=n THEN
tnp<='0';
ELSIF cout<n*20 THEN
tnp<='1';
ELSE
cout:=0;
END IF;
END IF;
END PROCESS;
clk_out10<=tnp;
END fwm;
```
此外,`clk_out1` 也没有被使用,如果不需要可以将其从 PORT 中删除。
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