arduino-0018-linux-x64

arduino-0018-linux-x64/examples/Control/switchCase2/switchCase2.pde

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+/*
+  Switch statement  with serial input
+ 
+ Demonstrates the use of a switch statement.  The switch
+ statement allows you to choose from among a set of discrete values
+ of a variable.  It's like a series of if statements.
+ 
+ To see this sketch in action, open the Serial monitor and send any character.
+ The characters a, b, c, d, and e, will turn on LEDs.  Any other character will turn
+ the LEDs off.
+ 
+ The circuit:
+ * 5 LEDs attached to digital pins 2 through 6 through 220-ohm resistors
+ 
+ created 1 Jul 2009
+ by Tom Igoe 
+ 
+ http://www.arduino.cc/en/Tutorial/SwitchCase2
+ */
+
+void setup() {
+  // initialize serial communication:
+  Serial.begin(9600); 
+   // initialize the LED pins:
+      for (int thisPin = 2; thisPin < 7; thisPin++) {
+        pinMode(thisPin, OUTPUT);
+      } 
+}
+
+void loop() {
+  // read the sensor:
+  if (Serial.available() > 0) {
+    int inByte = Serial.read();
+    // do something different depending on the character received.  
+    // The switch statement expects single number values for each case;
+    // in this exmaple, though, you're using single quotes to tell
+    // the controller to get the ASCII value for the character.  For 
+    // example 'a' = 97, 'b' = 98, and so forth:
+
+    switch (inByte) {
+    case 'a':    
+      digitalWrite(2, HIGH);
+      break;
+    case 'b':    
+      digitalWrite(3, HIGH);
+      break;
+    case 'c':    
+      digitalWrite(4, HIGH);
+      break;
+    case 'd':    
+      digitalWrite(5, HIGH);
+      break;
+    case 'e':    
+      digitalWrite(6, HIGH);
+      break;
+    default:
+      // turn all the LEDs off:
+      for (int thisPin = 2; thisPin < 7; thisPin++) {
+        digitalWrite(thisPin, LOW);
+      }
+    } 
+  }
+}
+