AT&T Developer Summit Hackathon 2016 / Mbed 2 deprecated frdm_Grove_Joystick_Example

Freedom Seeed Grove Joystick Example

Dependencies:   mbed

Fork of frdm_Grove_Joystick_Example by Freescale

Simply Import this Program into your mbed compiler
Select Compile to generate the binary file
Open an Hyperterminal window and connect to the mbed Serial Port (COMxx) peripheral using speed 9600bps
Plug the Grove Shield v2 on the top of your FRDM-K64F
Connect on end of the 4-pin Grove cable to the Temperature and Humidity module and the other end to the port A0 of the Grove Adapter.

Drag n drop the frdm_Grove_Joystick_Example_K64F.bin into the mbed drive from your file explorer
Wait for download to complete
Press the Reset/SW1 button of your FRDM-K64F board to launch the program

Your hyperterminal window should now display a value for the X, the Y and the button position of the Joystick (see picture below)!!
X=365 when pushed left, X=727 when centered and X=1000 when pushed right Y=365 when pushed down, X=727 when centered and X=1000 when pushed up Button=1 when pressed and Button=0 when released

#include "mbed.h"

AnalogIn xAxis(A0);
AnalogIn yAxis(A1);

int x,y,button;  // global variables to hold values
Ticker joystick; // recurring interrupt to get joystick data

void joystick_Int_Handler()
{
    x = xAxis.read() * 1000; // float (0->1) to int (0-1000)
    y = yAxis.read() * 1000;
    if ( (x > 900) || (y > 900) )
        button = 1;
    else
        button = 0;
}

int main() 
{
    // init interrupt, call every .2s
    joystick.attach(joystick_Int_Handler,0.2);
    
    // Print out the variables
    while(1){
        printf("\rX=%3d, Y=%3d, Button=%d",x,y,button);
    }
}