Arduino 4X3键盘 AD模拟分量实现

//读分量测试

----------------

int keyboardPin = ;    //模拟口0

 int keyboardValue = ;   // 取得键AD模拟分量

 void setup() {

   //通信波特率

   Serial.begin(); 

 }

 void loop() {

   keyboardValue = analogRead(keyboardPin); // read the pot value

   Serial.println(keyboardValue);      // 串口打印

   delay();                  

 }

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int keypressed = ;

int keyboardPin = ;    

int keyboardValue = ;  

void setup(){

  Serial.begin(); 

}

void loop(){

 keyboardValue = analogRead(keyboardPin); //AD分量范围2的10次方

 while (keyboardValue < ){

   //监听模拟口

 keyboardValue = analogRead(keyboardPin); 

 delay();             

 readkeyboard(); 

}

void readkeyboard(){

   keyboardValue = analogRead(keyboardPin);

   if (keyboardValue <){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if ((keyboardValue >) && (keyboardValue < )){keypressed = ;}

   if (keyboardValue >){keypressed = ;}

   while (keyboardValue > ) {

     delay ();

     keyboardValue = analogRead(keyboardPin);

   }

   Serial.println(keypressed);     

   delay();                    

                     }