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en:learing:examples:asciitable

ASCII Table

Demonstrates the advanced serial printing functions by generating a table of characters and their ASCII values in decimal, hexadecimal, octal, and binary. For more on ASCII, see asciitable.com

Hardware Required

Arduino Board Circuit

image developed using Fritzing. For more circuit examples, see the Fritzing project page

None, but the Arduino has to be connected to the computer.

Code

/*
  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++;  
}

Output

ASCII Table ~ Character Map

!, dec: 33, hex: 21, oct: 41, bin
4, decúASCII Table ~ Character Map
!, dec: 33, hex: 21, oct: 41, bin: 100001
", dec: 34, hex: 22, oct: 42, bin: 100010
#, dec: 35, hex: 23, oct: 43, bin: 100011
$, dec: 36, hex: 24, oct: 44, bin: 100100
%, dec: 37, hex: 25, oct: 45, bin: 100101
&, dec: 38, hex: 26, oct: 46, bin: 100110
', dec: 39, hex: 27, oct: 47, bin: 100111
(, dec: 40, hex: 28, oct: 50, bin: 101000
), dec: 41, hex: 29, oct: 51, bin: 101001
*, dec: 42, hex: 2A, oct: 52, bin: 101010
+, dec: 43, hex: 2B, oct: 53, bin: 101011
,, dec: 44, hex: 2C, oct: 54, bin: 101100
-, dec: 45, hex: 2D, oct: 55, bin: 101101
., dec: 46, hex: 2E, oct: 56, bin: 101110
/, dec: 47, hex: 2F, oct: 57, bin: 101111
0, dec: 48, hex: 30, oct: 60, bin: 110000
1, dec: 49, hex: 31, oct: 61, bin: 110001
2, dec: 50, hex: 32, oct: 62, bin: 110010
3, dec: 51, hex: 33, oct: 63, bin: 110011
4, dec: 52, hex: 34, oct: 64, bin: 110100
5, dec: 53, hex: 35, oct: 65, bin: 110101
6, dec: 54, hex: 36, oct: 66, bin: 110110
7, dec: 55, hex: 37, oct: 67, bin: 110111
8, dec: 56, hex: 38, oct: 70, bin: 111000
9, dec: 57, hex: 39, oct: 71, bin: 111001
:, dec: 58, hex: 3A, oct: 72, bin: 111010
;, dec: 59, hex: 3B, oct: 73, bin: 111011
<, dec: 60, hex: 3C, oct: 74, bin: 111100
=, dec: 61, hex: 3D, oct: 75, bin: 111101
>, dec: 62, hex: 3E, oct: 76, bin: 111110
?, dec: 63, hex: 3F, oct: 77, bin: 111111
@, dec: 64, hex: 40, oct: 100, bin: 1000000
A, dec: 65, hex: 41, oct: 101, bin: 1000001
B, dec: 66, hex: 42, oct: 102, bin: 1000010
C, dec: 67, hex: 43, oct: 103, bin: 1000011
D, dec: 68, hex: 44, oct: 104, bin: 1000100
E, dec: 69, hex: 45, oct: 105, bin: 1000101

en/learing/examples/asciitable.txt · 最后更改: 2023/06/07 04:23 由 127.0.0.1