Analog Joystick Controller

/* FILE:    ARD_Analogue_Joystick_HCARDU0019_Example.pde
   DATE:    03/07/12
   VERSION: 0.1


This is a simple example of how to use the HobbyComponents Arduino analogue joystick
module (HCARDU0019). The module has three outputs, two 5V analogue outputs 
representing the position of the joysticks X/Y axis, and one switch contact output 
representing the joystick’s push button. The switch contact has no pull-up and simply 
connects the pin to ground when the button is pressed therefore a pull-up will be 
required.


This example program reads the status of the analogue and push button pins and 
outputs the result to the serial port.
to the UART.


MODULE PINOUT:


PIN 1: Ground
PIN 2: +5V
PIN 3: X-axis
PIN 4: Y-axis
PIN 5: Switch


You may copy, alter and reuse this code in any way you like but please leave 
reference to HobbyComponents.com in your comments if you redistribute this code. */







#define JOYS_VRX_DIO A0    /* Select the input pin for the joystick's X-Axis */

#define JOYS_VRY_DIO A1    /* Select the input pin for the joystick's Y-Axis */



#define JOYS_SW_DIO 2      /* Select the input pin for the joystick's push button */




/* Initialise serial and DIO */
void setup()

{

  /* Setup the serial port for displaying the status of the sensor */

  Serial.begin(9600);

  

  /* Configure the DIO pin that the joystick's push button will be connected 
     to. As it has no pullup we will need to enable the Arduino's internal pull-up */

  pinMode(JOYS_SW_DIO, INPUT); 

  digitalWrite(JOYS_SW_DIO, HIGH); // turn on pull-up resistors

}




/* Main program loop */
void loop()

{

  /* Read the current position of the joystick's X & Y axis via the analogue pins */

  Serial.print("X axis: ");

  Serial.print(analogRead(JOYS_VRX_DIO));

  Serial.print(" Y axis: ");

  Serial.print(analogRead(JOYS_VRY_DIO));

  

  /* Read the state of the push button and if pressed, output the state to the 
     serial port */

  if (!digitalRead(JOYS_SW_DIO))

  {

    Serial.println(" Button pressed !");

  }else

  {

     Serial.println();

  }

}