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¢£Arduino ¥¹¥±¥Ã¥ÁÎã / Blink Without Delay

Arduino ¤Î¥¹¥±¥Ã¥ÁÎã¡ÖBlink Without Delay¡×¤ò»î¤·¤Æ¤ß¤Þ¤¹¡£

 

TUTORIALS Built-In Examples > 02.Digital > BlinkWithoutDelay

 

²óÏ©¿Þ¤Ç¤Ï³°Éô¤Ë LED ¤òÀܳ¤¹¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¤¬¡¢Æ⢠LED ¤òÅÀÌǤµ¤»¤ë¤Î¤ÇɬÍפϤ¢¤ê¤Þ¤»¤ó¡£¥¹¥±¥Ã¥ÁÎã¤ò¤½¤Î¤Þ¤Þ IDE ¤Ë¥³¥Ô¡¼¥¢¥ó¥É¥Ú¡¼¥¹¥È¤·¡¢Arduino ¤Ø½ñ¤­¹þ¤á¤Ð´°À®¤Ç¤¹¤Í¡£

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  1. const int ledPin = LED_BUILTIN;
  2. int ledState = LOW;
  3. unsigned long previousMillis = 0;
  4. const long interval = 1000;
  5. void setup() {
  6.   pinMode(ledPin, OUTPUT);
  7. }
  8. void loop() {
  9.   unsigned long currentMillis = millis();
  10.   if (currentMillis - previousMillis >= interval) {
  11.     previousMillis = currentMillis;
  12.     if (ledState == LOW) {
  13.       ledState = HIGH;
  14.     } else {
  15.       ledState = LOW;
  16.     }
  17.     digitalWrite(ledPin, ledState);
  18.   }
  19. }

 

delay ¤ò»È¤ï¤º¤Ë¡¢millis() ¤Ç¥¤¥ó¥¿¡¼¥Ð¥ë»þ´Ö¤òĶ¤¨¤¿¤«¤É¤¦¤«¤ò¥Á¥§¥Ã¥¯¤¹¤ëÊýË¡¤Ç¤¹¤Í¡£

²¶¤¬µ¤¤Ë¤Ê¤Ã¤¿¤Î¤Ï¡¢LED ¤ÎÅÀÌǤΤ¿¤á¤Ë ledState ¤òȿž¤µ¤»¤ëÉôʬ (16〜20¹Ô) ¤Ç¤¹¡£if() ¤ÇȽÄꤹ¤ë¤Î¤Ï¤È¤Ã¤Æ¤â¤ï¤«¤ê¤ä¤¹¤¤¤Ç¤¹¤¬¡¢Ê̤ÎÊýË¡¤ËÊѹ¹¤·¤Æ¤ß¤Þ¤·¤ç¤¦¡£

 

  1.     ledState = ~ledState;

 

ledState ¤ò NOT ±é»»¤Çȿž¤µ¤»¤Æ¤ß¤Þ¤·¤¿¡£¤³¤Î¾ì¹ç¤Ï LOW=0 ¡¢HIGH=-1 ¤È¤Ê¤ê¤Þ¤¹¡£¥Ó¥Ã¥È¤¬¤¹¤Ù¤Æȿž¤·¤Æ¤¤¤ë¤È¤¤¤¦¤³¤È¡£LED ¤ÎÅÀÌǤÏÀµ¾ï¤Ë¹Ô¤ï¤ì¤Æ¤¤¤Þ¤¹¤Î¤Ç¡¢¤¿¤Ö¤ó 1 ¥Ó¥Ã¥ÈÌܤÎÃͤÇÀ©¸æ¤·¤Æ¤¤¤ë¤Î¤Ç¤·¤ç¤¦¡£

 

NOT ¤Ï¥Ó¥Ã¥Èñ°Ì¤ÎÈÝÄê¤Ç¤¹¤¬¡¢¼¡¤ÎÎã¤Ï¥Ö¡¼¥ê¥¢¥óÃͤÇȿž¤µ¤»¤Þ¤¹¡£

 

  1.     ledState = !ledState;

 

½ÐÎÏ¤Ï 0 ¤È 1 ¤Ë¤Ê¤ê¤Þ¤·¤¿¡£¤³¤Î¾ì¹ç¤Ï¡¢ÊÑ¿ô¤ò¥Ö¡¼¥ë·¿¤Ë¤·¤ÆÃÍ¤Ï true - false ¤È¤¹¤ë¤Ù¤­¤Ê¤Î¤Ç¤·¤ç¤¦¤Í¡£

 

¼¡¤ÎÎã¤Ï¡¢1 ¥Ó¥Ã¥ÈÌܤÀ¤±¤òȿž¤µ¤»¤ëÊýË¡¤Ç¤¹¡£XOR ±é»»¤Ç¥Ó¥Ã¥ÈÁàºî¤·¤Æ¤¤¤Þ¤¹¡£

 

  1.     ledState = ledState^1;

 

¤³¤ì¤ÏÊ£¹ç±é»»»Ò¤ò»È¤Ã¤Æ¡¢

 

  1.     ledState ^= 1;

 

¤Î¤è¤¦¤Ë½ñ¤¯¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£¸Ä¿ÍŪ¤Ë¤Ï¤³¤ÎÊýË¡¤¬¹¥¤­¤Ç¤¹¤¬¡¢ÍýÏÀŪ¤Ë¤É¤ì¤¬¤è¤¤¤Î¤«¤Ï¡¢²¶¤Ë¤Ï¤ï¤«¤ê¤Þ¤»¤ó (^_^;)

 


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