loops array

[sketchbook_andrea] / programming / loops / loop_3_multi_led_random / loop_3_multi_led_random.ino

diff --git a/programming/loops/loop_3_multi_led_random/loop_3_multi_led_random.ino b/programming/loops/loop_3_multi_led_random/loop_3_multi_led_random.ino
new file mode 100644 (file)
index 0000000..70cfc62
--- /dev/null
+++ b/programming/loops/loop_3_multi_led_random/loop_3_multi_led_random.ino
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+/*
+  Random Rainbow
+  
+  Generazione di un numero casuale per modificare il flusso del programma.
+  
+ 
+
+ 
+ The circuit:
+ * LEDs from pins 2 through 9 to ground
+ 
+ Schemi:
+ - http://lab.piffa.net/schemi/8_led_single_res_bb.png
+ - http://lab.piffa.net/schemi/8_led_single_res_schem.png
+ 
+ http://www.arduino.cc/en/Tutorial/ForLoop
+ */
+
+byte ledPins[8] = {  // Domanda: cosa succede se uso int?
+  2,3,4,5,6,7,8,9} 
+; //Array
+int timer = 100;           // Pausa per far brillare i LED
+int randNumber ;
+
+void setup() {
+  Serial.begin(9600);
+  // use a for loop to initialize each pin as an output:
+  for (int thisPin = 0; thisPin < sizeof(ledPins); thisPin++)  {
+    pinMode(ledPins[thisPin], OUTPUT);
+    Serial.print("Inizializzato pin n. ");
+    Serial.println(  thisPin);
+  }
+
+  Serial.print("Dimesione array: ");
+  Serial.println(sizeof(ledPins));
+  randomSeed(analogRead(0));  // Rilevazione di un valore esterno
+ // per scegliere il primo elemento del pseudorandom generators
+}
+
+void loop() {
+  // print a random number from 0 to 8
+  randNumber = random(8);
+  // turn the pin on:
+  Serial.print("Accensione pin  n. ");
+  Serial.println(randNumber);
+  digitalWrite(ledPins[randNumber], HIGH);  
+  delay(timer);                  
+  // turn the pin off:
+  digitalWrite(ledPins[randNumber], LOW);    
+
+  if (randNumber == 0) {
+    rainbow() ;
+  }
+}
+
+////////////////
+// Funzioni
+
+void rainbow() {
+  // Esegue un pattern con i led
+  
+  Serial.println(">>> Rainbow! <<<");
+  for (int thisPin = 0; thisPin < sizeof(ledPins); thisPin++) {
+    // turn the pin on:
+    digitalWrite(ledPins[thisPin], HIGH);  
+    delay(timer / 2);                  
+    // turn the pin off:
+    digitalWrite(ledPins[thisPin], LOW);    
+    // Debug
+
+  }
+
+  // loop from the highest pin to the lowest:
+  for (int thisPin = sizeof(ledPins) -1 ; thisPin > 0; thisPin--) {
+    // ><<turn the pin on:
+    digitalWrite(ledPins[thisPin], HIGH);
+    delay(timer / 3);
+    // turn the pin off:
+    digitalWrite(ledPins[thisPin], LOW);
+  }
+}
+
+
+
+
+