File content as of revision 10:1994adcfc86f:

// This header has all the (extern) declarations of the globals.
// "extern" means "this is instantiated somewhere, but here's what the name
// means.
#include "globals.h"

#include "hardware.h"

// We need to actually instantiate all of the globals (i.e. declare them once
// without the extern keyword). That's what this file does!

// Hardware initialization: Instantiate all the things!
uLCD_4DGL uLCD(p9,p10,p11);             // LCD Screen (tx, rx, reset)
SDFileSystem sd(p5, p6, p7, p8, "sd");  // SD Card(mosi, miso, sck, cs)
Serial pc(USBTX,USBRX);                 // USB Console (tx, rx)
MMA8452 acc(p28, p27, 100000);        // Accelerometer (sda, sdc, rate)
DigitalIn button1(p21);                 // Pushbuttons (pin)
DigitalIn button2(p22);
DigitalIn button3(p23);
AnalogOut DACout(p18);                  // Speaker (pin)
PwmOut speaker(p25); 
wave_player waver(&DACout);


// Some hardware also needs to have functions called before it will set up
// properly. Do that here.
int hardware_init()
{    
    // Initialize pushbuttons
    button1.mode(PullUp); 
    button2.mode(PullUp);
    button3.mode(PullUp);
    uLCD.baudrate(3000000);
    acc.setBitDepth(MMA8452::BIT_DEPTH_12);
    acc.setDynamicRange(MMA8452::DYNAMIC_RANGE_4G);
    acc.setDataRate(MMA8452::RATE_100);
    return ERROR_NONE;
}

// Implement this function.
// HINT: lookup your accelerometer under mbed site > Hardware> Components
// and look at demo code
GameInputs read_inputs() 
{
    GameInputs in;
    in.b1 = button1.read();
    in.b2 = button2.read();
    in.b3 = button3.read();
    double x_acc = 0;
    if (!acc.isXReady()) {
        wait(0.1);
    } else {
        acc.readXGravity(&x_acc);
        in.ax = x_acc;
    }
    return in;
}