File content as of revision 0:6a73d3dc037e:

// Demo for the uLCD-144-G2 and MMA8452Q 3-axis accelerometer

#include "mbed.h"
#include "MMA8452Q.h"
#include "uLCD_4DGL.h"

// Graphic LCD - TX, RX, and RES pins
uLCD_4DGL uLCD(p9,p10,p11);

// Accelerometer - SDA, SCL, and I2C address
MMA8452Q accel(p28, p27, 0x1D);

int main() {

    // Initialize uLCD
    uLCD.baudrate(115200);
    uLCD.background_color(BLACK);
    uLCD.cls();

    // Initialize accelerometer
    accel.init();

    // Initial parameters for the circle
    float x = 64;
    float y = 64;
    int radius = 4;
    int speed = 4;

    // Make a ball "fall" in direction of accelerometer
    while (1) {

        // Draw a red circle
        uLCD.filled_circle((int)x, (int)y, radius, RED);

        // Wait before erasing old circle
        wait(0.02);         // In seconds

        // Erase old circle
        uLCD.filled_circle((int)x, (int)y, radius, BLACK);

        // Move circle. IMPORTANT! Notice how we adjust for sensor orientation!
        x -= (speed * accel.readY());
        y -= (speed * accel.readX());

        // Make circle sit on edges
        if ( x <= radius + 1 ) {
            x = radius + 1;
        } else if ( x >= 126 - radius ) {
            x = 126 - radius;
        }
        if ( y <= radius + 1 ) {
            y = radius + 1;
        } else if ( y >= 126 - radius ) {
            y = 126 - radius;
        }
    }
}