build/shared/examples/04.Communication/ASCIITable/ASCIITable.ino

/*
  ASCII table
 
 Prints out byte values in all possible formats:  
 * as raw binary values
 * as ASCII-encoded decimal, hex, octal, and binary values
 
 For more on ASCII, see http://www.asciitable.com and http://en.wikipedia.org/wiki/ASCII
 
 The circuit:  No external hardware needed.
 
 created 2006
 by Nicholas Zambetti 
 modified 9 Apr 2012
 by Tom Igoe
 
 This example code is in the public domain.

 <http://www.zambetti.com> 
 
 */
void setup() { 
 //Initialize serial and wait for port to open:
  Serial.begin(9600); 
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }
  
  // prints title with ending line break 
  Serial.println("ASCII Table ~ Character Map"); 
} 

// first visible ASCIIcharacter '!' is number 33:
int thisByte = 33; 
// you can also write ASCII characters in single quotes.
// for example. '!' is the same as 33, so you could also use this:
//int thisByte = '!';  

void loop() { 
  // prints value unaltered, i.e. the raw binary version of the 
  // byte. The serial monitor interprets all bytes as 
  // ASCII, so 33, the first number,  will show up as '!' 
  Serial.write(thisByte);    

  Serial.print(", dec: "); 
  // prints value as string as an ASCII-encoded decimal (base 10).
  // Decimal is the  default format for Serial.print() and Serial.println(),
  // so no modifier is needed:
  Serial.print(thisByte);      
  // But you can declare the modifier for decimal if you want to.
  //this also works if you uncomment it:

  // Serial.print(thisByte, DEC);  


  Serial.print(", hex: "); 
  // prints value as string in hexadecimal (base 16):
  Serial.print(thisByte, HEX);     

  Serial.print(", oct: "); 
  // prints value as string in octal (base 8);
  Serial.print(thisByte, OCT);     

  Serial.print(", bin: "); 
  // prints value as string in binary (base 2) 
  // also prints ending line break:
  Serial.println(thisByte, BIN);   

  // if printed last visible character '~' or 126, stop: 
  if(thisByte == 126) {     // you could also use if (thisByte == '~') {
    // This loop loops forever and does nothing
    while(true) { 
      continue; 
    } 
  } 
  // go on to the next character
  thisByte++;  
}