add arduino-0018-linux (32 bit)

arduino-0018-linux/examples/Sensors/Memsic2125/Memsic2125.pde

@@ -0,0 +1,61 @@
+/*
+   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
+
+ */
+
+// 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() {
+  // initialize serial communications:
+  Serial.begin(9600);
+  // initialize the pins connected to the accelerometer
+  // as inputs:
+  pinMode(xPin, INPUT);
+  pinMode(yPin, INPUT);
+}
+
+void loop() {
+  // variables to read the pulse widths:
+  int pulseX, pulseY;
+  // variables to contain the resulting accelerations
+  int accelerationX, accelerationY;
+  
+  // read pulse from x- and y-axes:
+  pulseX = pulseIn(xPin,HIGH);  
+  pulseY = pulseIn(yPin,HIGH);
+  
+  // convert the pulse width into acceleration
+  // 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(accelerationX);
+  // print a tab character:
+  Serial.print("\t");
+  Serial.print(accelerationY);
+  Serial.println();
+
+  delay(100);
+}