File content as of revision 1:133129bd3d45:

#include "mbed.h"
#include "LM75B.h"
#include "C12832_lcd.h"
#include "MMA7660.h"

DigitalOut startLED(LED3);
DigitalOut rgbLED[] = {DigitalOut(p23), DigitalOut(p24), DigitalOut(p25)};

InterruptIn fireInterrupt(p14);

Timeout startChecker;

LM75B tempSensor(p28, p27);
MMA7660 MMA(p28, p27);
C12832_LCD lcdDisplay;

Thread temp_thread;
Thread gyro_thread;

Mutex lcdMutex;

bool boardStarted = false;
bool tempThreadRunning = false;
bool gyroThreadRunning = false;

void tmpThread()
{
    tempThreadRunning = true;
    
    while(boardStarted)
    {
        lcdMutex.lock();
        
        lcdDisplay.cls();
        lcdDisplay.locate(0, 0);
        lcdDisplay.printf("Temp: %.2f", tempSensor.read());
        
        lcdMutex.unlock();
        wait(0.5);
    }
    
    tempThreadRunning = false;
}

void gyroThread()
{
    gyroThreadRunning = true;
    
    while(boardStarted)
    {
        int x = (x + MMA.x() * 32.0)/2.0;
        int y = (y -(MMA.y() * 16.0))/2.0;
        lcdMutex.lock();
        lcdDisplay.locate(0, 20);
        lcdDisplay.printf("X: %d; Y: %d", x, y);
        lcdMutex.unlock();
        
        wait(0.1); //time delay
        
        lcdMutex.lock();
        lcdDisplay.fillcircle(x+83, y+15, 3, 0); //erase bubble
        lcdMutex.unlock();
    }
    
    gyroThreadRunning = false;
}

void start()
{
    if(boardStarted)
    {
        boardStarted = false;
        rgbLED[0] = 0;
        rgbLED[1] = 1;
        
    }
    else
    {
        boardStarted = true;
        rgbLED[0] = 1;
        rgbLED[1] = 0;
    }
}

void pressButton()
{
    startChecker.attach(&start, 3.0);
}

void releaseButton()
{
    startChecker.detach();
}

int main()
{
    rgbLED[0] = rgbLED[1] = rgbLED[2] = 1;
    rgbLED[0] = 0;
    rgbLED[1] = 1;
    
    fireInterrupt.rise(pressButton);
    fireInterrupt.fall(releaseButton);
    
    lcdDisplay.set_font((unsigned char*) Arial_9);
    
    while(1)
    {
        if(boardStarted && !tempThreadRunning)
        {
            temp_thread.start(tmpThread);
        }
        
        if(boardStarted && !gyroThreadRunning)
        {
            gyro_thread.start(gyroThread);
        }
        
        if(!boardStarted)
        {
            lcdMutex.lock();
            lcdDisplay.cls();
            lcdMutex.unlock();
        }
    }
}