XBee_config.ino

#include <SoftwareSerial.h>
SoftwareSerial XBee(2, 3); // Arduino RX, TX (XBee Dout, Din)

void setup()
{
  XBee.begin(9600); 
  XBee.println(F("Awwwww YEA we WORKIN!"));
}

void loop()
{
  if (XBee.available())
  {
    char c = XBee.read();
    switch (c)
    {
    case 'w':      // If received 'w'
    case 'W':      // or 'W'
      writeAPin(); // Write analog pin
      break;
    case 'd':      // If received 'd'
    case 'D':      // or 'D'
      writeDPin(); // Write digital pin
      break;
    case 'r':      // If received 'r'
    case 'R':      // or 'R'
      readDPin();  // Read digital pin
      break;
    case 'a':      // If received 'a'
    case 'A':      // or 'A'
      readAPin();  // Read analog pin
      break;
    }
  }
}

// Write Digital Pin
// Send a 'd' or 'D' to enter.
// Then send a pin #
//   Use numbers for 0-9, and hex (a, b, c, or d) for 10-13
// Then send a value for high or low
//   Use h, H, or 1 for HIGH. Use l, L, or 0 for LOW
void writeDPin()
{
  while (XBee.available() < 2)
    ; // Wait for pin and value to become available
  char pin = XBee.read();
  char hl = ASCIItoHL(XBee.read());

  // Print a message to let the control know of our intentions:
  XBee.print("Setting pin ");
  XBee.print(pin);
  XBee.print(" to ");
  XBee.println(hl ? "HIGH" : "LOW");

  pin = ASCIItoInt(pin); // Convert ASCCI to a 0-13 value
  pinMode(pin, OUTPUT); // Set pin as an OUTPUT
  digitalWrite(pin, hl); // Write pin accordingly
}

// Turn an ASCII value into either HIGH or LOW
int ASCIItoHL(char c)
{
  // If received 0, byte value 0, L, or l: return LOW
  // If received 1, byte value 1, H, or h: return HIGH
  if ((c == '0') || (c == 0) || (c == 'L') || (c == 'l'))
    return LOW;
  else if ((c == '1') || (c == 1) || (c == 'H') || (c == 'h'))
    return HIGH;
  else
    return -1;
}

// Turn an ASCII hex value into a 0-15 byte val
int ASCIItoInt(char c)
{
  if ((c >= '0') && (c <= '9'))
    return c - 0x30; // Minus 0x30
  else if ((c >= 'A') && (c <= 'F'))
    return c - 0x37; // Minus 0x41 plus 0x0A
  else if ((c >= 'a') && (c <= 'f'))
    return c - 0x57; // Minus 0x61 plus 0x0A
  else
    return -1;
}