File content as of revision 0:2679ca1e9214:

#include "mbed.h"
#include "C12832.h"
C12832 lcd(p5,p7,p6,p8,p11);
InterruptIn joystickcenter(p14);
InterruptIn button(p9);
DigitalOut led(LED1);
DigitalOut flash(LED4);
int x;

void flip(){
    led = !led; // toggles the led when the joystick button is pressed.
x=1;
}
int main(){
    joystickcenter.rise(&flip); // attach the function address to the rising edge
    button.mode(PullUp);  // With this, no external pullup resistor needed
    button.rise(&flip);    // attach the function address to the rising edge
    while(1) {    // wait around, interrupts will interrupt this!
        if(x==1) {
            lcd.locate(0,0);
            lcd.printf("Variable has been SET!");
            flash = !flash; // turns LED4 on if off, off if on
            wait(0.25); // the instruction to wait for a quarter-second
        }
    }
}