ENTITY LED IS PORT(clk: IN BIT; -- 假设clk为2Hz，周期0.5秒 led_out: OU
ENTITY LED IS PORT(clk: IN BIT; -- 假设clk为2Hz，周期0.5秒 led_out: OU
2条回答
2024-07-04 14:19
ENTITY LED IS PORT(clk: IN BIT; -- 假设clk为2Hz，周期0.5秒 led_out: OUT BIT); END LED; ARCHITECTURE behav OF LED IS SIGNAL q: BIT; BEGIN PROCE360问答SS(clk) BEGIN IF (clk‘Event AND clk='1') THEN q <= NOT q; END IF; END PROCESS;
led <= q; END behav; 如果你的时钟信号频率比较高，再设计一个分频器超秋式经望无这失，将其频率降为2Hz即可。
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','http://hcgf898.com/data/attach/logo/logo.png', '推荐 的问题《那个VHDL开发板~~怎么用quartus编程~~编出一个led灯每隔一秒闪一次啊~~》','https://hcgf898.com/answer/58640/121146.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
PORT(clk: IN BIT; -- 假设clk为2Hz，周期0.5秒
led_out: OUT BIT);
END LED;
ARCHITECTURE behav OF LED IS
SIGNAL q: BIT;
BEGIN
PROCE360问答SS(clk)
BEGIN
IF (clk‘Event AND clk='1') THEN
q <= NOT q;
END IF;
END PROCESS;
led <= q;
END behav;
如果你的时钟信号频率比较高，再设计一个分频器超秋式经望无这失，将其频率降为2Hz即可。
一周热门 更多>