taho (Page 85)

<span style="color: #cc6600;">int</span> potpin=0;
<span style="color: #cc6600;">int</span> ledpin_red=9;
<span style="color: #cc6600;">int</span> ledpin_yellow=10;
<span style="color: #cc6600;">int</span> ledpin_green=11;
<span style="color: #cc6600;">int</span> val=0;

<span style="color: #cc6600;">void</span> <span style="color: #cc6600;"><b>setup</b></span>()
{
  <span style="color: #cc6600;"><b>Serial</b></span>.<span style="color: #cc6600;">begin</span>(9600);<span style="color: #7e7e7e;">//设置波特率为9600</span>
  <span style="color: #cc6600;">pinMode</span>(ledpin_red,<span style="color: #006699;">OUTPUT</span>);
  <span style="color: #cc6600;">pinMode</span>(ledpin_yellow,<span style="color: #006699;">OUTPUT</span>);
  <span style="color: #cc6600;">pinMode</span>(ledpin_green,<span style="color: #006699;">OUTPUT</span>);

<span style="color: #7e7e7e;">//注意：模拟接口自动设置为输入</span>
}
<span style="color: #cc6600;">void</span> <span style="color: #cc6600;"><b>loop</b></span>()
{
val=<span style="color: #cc6600;">analogRead</span>(potpin);<span style="color: #7e7e7e;">// 读取传感器的模拟值并赋值给val</span>
<span style="color: #cc6600;"><b>Serial</b></span>.<span style="color: #cc6600;">println</span>(val);<span style="color: #7e7e7e;">//显示val 变量</span>

<span style="color: #7e7e7e;">//红灯</span>
<span style="color: #cc6600;"><b>Serial</b></span>.<span style="color: #cc6600;">println</span>(<span style="color: #006699;">"Red!   STOP!!!!!"</span>);
<span style="color: #cc6600;">analogWrite</span>(ledpin_red,val/4);<span style="color: #7e7e7e;">//红灯亮，绿灯和黄灯灭</span>
<span style="color: #cc6600;">analogWrite</span>(ledpin_green,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">delay</span>(5000);<span style="color: #7e7e7e;">//延时5秒</span>

<span style="color: #7e7e7e;">//黄灯变换</span>
<span style="color: #cc6600;"><b>Serial</b></span>.<span style="color: #cc6600;">println</span>(<span style="color: #006699;">"Notice!SLOW DOWN!!! Yellow!"</span>);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,val/4);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,val/4);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,val/4);
<span style="color: #cc6600;">delay</span>(500);<span style="color: #7e7e7e;">//黄灯闪烁三次，此时红灯仍是亮的</span>

<span style="color: #7e7e7e;">//绿灯</span>
<span style="color: #cc6600;"><b>Serial</b></span>.<span style="color: #cc6600;">println</span>(<span style="color: #006699;">"GREEN!   GOGOGO!"</span>);
<span style="color: #cc6600;">analogWrite</span>(ledpin_green,val/4);<span style="color: #cc6600;">analogWrite</span>(ledpin_red,val/4);<span style="color: #7e7e7e;">//绿灯亮，红灯和黄灯灭</span>
<span style="color: #cc6600;">analogWrite</span>(ledpin_red,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">delay</span>(5000);<span style="color: #7e7e7e;">//延时5秒</span>

<span style="color: #7e7e7e;">//变换，完全复制上面的</span>
<span style="color: #cc6600;"><b>Serial</b></span>.<span style="color: #cc6600;">println</span>(<span style="color: #006699;">"Notice! Yellow!"</span>);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,val/4);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,val/4);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,<span style="color: #006699;">LOW</span>);
<span style="color: #cc6600;">delay</span>(500);
<span style="color: #cc6600;">analogWrite</span>(ledpin_yellow,val/4);
<span style="color: #cc6600;">delay</span>(500);<span style="color: #7e7e7e;">//闪烁三次</span>
}

int potpin=0;

int ledpin_red=9;

int ledpin_yellow=10;

int ledpin_green=11;

int val=0;

void setup()

{

Serial.begin(9600);//设置波特率为9600

pinMode(ledpin_red,OUTPUT);

pinMode(ledpin_yellow,OUTPUT);

pinMode(ledpin_green,OUTPUT);

//注意：模拟接口自动设置为输入

}

void loop()

{

val=analogRead(potpin);// 读取传感器的模拟值并赋值给val

Serial.println(val);//显示val 变量

//红灯

Serial.println("Red! STOP!!!!!");

analogWrite(ledpin_red,val/4);//红灯亮，绿灯和黄灯灭

analogWrite(ledpin_green,LOW);

analogWrite(ledpin_yellow,LOW);

delay(5000);//延时5秒

//黄灯变换

Serial.println("Notice!SLOW DOWN!!! Yellow!");

analogWrite(ledpin_yellow,val/4);

delay(500);

analogWrite(ledpin_yellow,LOW);

delay(500);

analogWrite(ledpin_yellow,val/4);

delay(500);

analogWrite(ledpin_yellow,LOW);

delay(500);

analogWrite(ledpin_yellow,val/4);

delay(500);//黄灯闪烁三次，此时红灯仍是亮的

//绿灯

Serial.println("GREEN! GOGOGO!");

analogWrite(ledpin_green,val/4);analogWrite(ledpin_red,val/4);//绿灯亮，红灯和黄灯灭

analogWrite(ledpin_red,LOW);

analogWrite(ledpin_yellow,LOW);

delay(5000);//延时5秒

//变换，完全复制上面的

Serial.println("Notice! Yellow!");

analogWrite(ledpin_yellow,val/4);

delay(500);

analogWrite(ledpin_yellow,LOW);

delay(500);

analogWrite(ledpin_yellow,val/4);

delay(500);

analogWrite(ledpin_yellow,LOW);

delay(500);

analogWrite(ledpin_yellow,val/4);

delay(500);//闪烁三次

}

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