XBee Shield - Page 20

XBee.print(" = ");
XBee.println(analogRead(pin));
}
// ASCIItoHL
// Helper function to 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;
}
// ASCIItoInt
// Helper function to 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;
}
// printMenu
// A big ol' string of Serial prints that print a usage menu over
// to the other XBee.
void printMenu()
{
// Everything is "F()"'d -- which stores the strings in flash.
// That'll free up SRAM for more importanat stuff.
XBee.println();
XBee.println(F("Arduino XBee Remote Control!"));
XBee.println(F("============================"));
XBee.println(F("Usage: "));
XBee.println(F("w#nnn - analog WRITE pin # to nnn"));
XBee.println(F(" e.g. w6088 - write pin 6 to 88"));
XBee.println(F("d#v - digital WRITE pin # to v"));
XBee.println(F(" e.g. ddh - Write pin 13 High"));
XBee.println(F("r# - digital READ digital pin #"));
XBee.println(F(" e.g. r3 - Digital read pin 3"));
XBee.println(F("a# - analog READ analog pin #"));
XBee.println(F(" e.g. a0 - Read analog pin 0"));
XBee.println();
XBee.println(F("- Use hex values for pins 10-13"));
XBee.println(F("- Upper or lowercase works"));
XBee.println(F("- Use 0, l, or L to write LOW"));
XBee.println(F("- Use 1, h, or H to write HIGH"));
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