updated example to match tutorial style guide

build/shared/dist/examples/Sensors/Memsic2125/Memsic2125.pde

@@ -1,42 +1,60 @@
 /*
- * Memsic2125
- * 
- * Read the Memsic 2125 two-axis accelerometer.  Converts the
- * pulses output by the 2125 into milli-g's (1/1000 of earth's
- * gravity) and prints them over the serial connection to the
- * computer.
- *
- * http://www.arduino.cc/en/Tutorial/Memsic2125
+   Memsic2125
+   
+   Read the Memsic 2125 two-axis accelerometer.  Converts the
+   pulses output by the 2125 into milli-g's (1/1000 of earth's
+   gravity) and prints them over the serial connection to the
+   computer.
+   
+   The circuit:
+	* X output of accelerometer to digital pin 2
+	* Y output of accelerometer to digital pin 3
+	* +V of accelerometer to +5V
+	* GND of accelerometer to ground
+  
+   http://www.arduino.cc/en/Tutorial/Memsic2125
+   
+   created 6 Nov 2008
+   by David A. Mellis
+   modified 30 Jun 2009
+   by Tom Igoe
+
  */
 
-int xpin = 2;
-int ypin = 3;
+// these constants won't change:
+const int xPin = 2;		// X output of the accelerometer
+const int yPin = 3;		// Y output of the accelerometer
 
-void setup()
-{
+void setup() {
+  // initialize serial communications:
   Serial.begin(9600);
-  pinMode(xpin, INPUT);
-  pinMode(ypin, INPUT);
+  // initialize the pins connected to the accelerometer
+  // as inputs:
+  pinMode(xPin, INPUT);
+  pinMode(yPin, INPUT);
 }
 
-void loop()
-{
+void loop() {
+  // variables to read the pulse widths:
   int pulseX, pulseY;
-  int accX, accY;
+  // variables to contain the resulting accelerations
+  int accelerationX, accelerationY;
   
-  // read pulse from x- and y-axes
-  pulseX = pulseIn(xpin,HIGH);  
-  pulseY = pulseIn(ypin,HIGH);
+  // read pulse from x- and y-axes:
+  pulseX = pulseIn(xPin,HIGH);  
+  pulseY = pulseIn(yPin,HIGH);
   
   // convert the pulse width into acceleration
-  // accX and accY are in milli-g's: earth's gravity is 1000.
-  accX = ((pulseX / 10) - 500) * 8;
-  accY = ((pulseY / 10) - 500) * 8;
+  // accelerationX and accelerationY are in milli-g's: 
+  // earth's gravity is 1000 milli-g's, or 1g.
+  accelerationX = ((pulseX / 10) - 500) * 8;
+  accelerationY = ((pulseY / 10) - 500) * 8;
 
   // print the acceleration
-  Serial.print(accX);
-  Serial.print(" ");
-  Serial.print(accY);
+  Serial.print(accelerationX);
+  // print a tab character:
+  Serial.print("\t");
+  Serial.print(accelerationY);
   Serial.println();
 
   delay(100);