按鍵實驗：按一下亮第一個燈，按第二下亮第二個燈，按第三下，兩個燈交替亮滅，按第四下，全滅。
const byte LED = 13;
const byte LED1 = 12;
const byte SW = 11;
int count = 0;
int bstate = 0;
int lstate = 0;
void setup() {
// put your setup code here, to run once:
pinMode(LED,OUTPUT);
pinMode(LED1,OUTPUT);
pinMode(SW,INPUT);
Serial.begin(9600);
}
void loop() {
// put your main code here, to run repeatedly:
//boolean val = digitalRead(SW);
bstate = digitalRead(SW);
if(bstate != lstate)
{
if (bstate == HIGH)
{
count++;
}
delay(50);
}
lstate = bstate;
if (count%4 == 1)
{
digitalWrite(LED,HIGH);
digitalWrite(LED1,LOW);
}
if (count%4 == 2)
{
digitalWrite(LED1,HIGH);
digitalWrite(LED,LOW);
}
if (count%4 == 3)
{
digitalWrite(LED,HIGH);
digitalWrite(LED1,LOW);
delay(100);
digitalWrite(LED1,HIGH);
digitalWrite(LED,LOW);
delay(100);
}
if (count%4 == 0 && count!=0)
{
digitalWrite(LED1,LOW);
digitalWrite(LED,LOW);
}
//if(val){
// count++;
// if(count%2==0){
// digitalWrite(LED,HIGH);
// }
// if(count%2==1){
// digitalWrite(LED,LOW);
// }
// //Serial.println(val);
//}
//else
//{
// digitalWrite(LED,LOW);
// Serial.println('/0x0c');
//}
}
|
