AMA 中級

 int in1_pin = 10;

int in2_pin = 11;

int buzzer_pin = 12;

int key1_pin = A0;

int key2_pin = A1;

int key3_pin = A2;

int seg7_pin[] = {9, 8, 7, 6, 5, 4, 3, 2};

int seg7_table[]={~0x8E,~0x92,~0x83};

int buzzer = 12;

int mode=10;

void setup()

{

 pinMode(buzzer_pin,OUTPUT);

 pinMode(in1_pin,OUTPUT);

 pinMode(in2_pin,OUTPUT);

 for(int i=0;i<7;i++)

 {

  pinMode(seg7_pin[i],OUTPUT);

 }

}

//--------------------------------

void outport(byte data)

{

  for(int j=0;j<7;j++)

  {

    if(data%2==1)

     digitalWrite(seg7_pin[j],HIGH);

    else

     digitalWrite(seg7_pin[j],LOW);

    data=data/2;

  }

}

void loop()

{

 if(digitalRead(key1_pin)==0 && mode!=1)

 {

  mode=1;

  outport(seg7_table[0]);

  digitalWrite(in1_pin,HIGH);

  digitalWrite(in2_pin,LOW);

  tone(buzzer,500,300);

 }

 else if(digitalRead(key2_pin)==0 && mode!=2) 

 {

  mode=2;

  outport(seg7_table[1]);

  digitalWrite(in1_pin,LOW);

  digitalWrite(in2_pin,LOW);

  tone(buzzer_pin,500,1000);

 }

 else if(digitalRead(key3_pin)==0 && mode!=3) 

 {

  mode=3;

  outport(seg7_table[2]);

  digitalWrite(in1_pin,LOW);

  digitalWrite(in2_pin,HIGH);

  tone(buzzer_pin,500,300); delay(400);

  tone(buzzer_pin,500,300);

 } 

}