Character Analysis

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1/*
2
3  Character analysis operators
4
5  Examples using the character analysis operators.
6
7  Send any byte and the sketch will tell you about it.
8
9  created 29 Nov 2010
10
11  modified 2 Apr 2012
12
13  by Tom Igoe
14
15  This example code is in the public domain.
16
17  https://www.arduino.cc/en/Tutorial/CharacterAnalysis
18
19*/
20
21void setup() {
22
23  // Open serial communications and wait for port to open:
24
25  Serial.begin(9600);
26
27  while (!Serial) {
28
29    ; // wait for serial port to connect. Needed for native USB port only
30
31  }
32
33  // send an intro:
34
35  Serial.println("send any byte and I'll tell you everything I can about it");
36
37  Serial.println();
38}
39
40void loop() {
41
42  // get any incoming bytes:
43
44  if (Serial.available() > 0) {
45
46    int thisChar = Serial.read();
47
48    // say what was sent:
49
50    Serial.print("You sent me: \'");
51
52    Serial.write(thisChar);
53
54    Serial.print("\'  ASCII Value: ");
55
56    Serial.println(thisChar);
57
58    // analyze what was sent:
59
60    if (isAlphaNumeric(thisChar)) {
61
62      Serial.println("it's alphanumeric");
63
64    }
65
66    if (isAlpha(thisChar)) {
67
68      Serial.println("it's alphabetic");
69
70    }
71
72    if (isAscii(thisChar)) {
73
74      Serial.println("it's ASCII");
75
76    }
77
78    if (isWhitespace(thisChar)) {
79
80      Serial.println("it's whitespace");
81
82    }
83
84    if (isControl(thisChar)) {
85
86      Serial.println("it's a control character");
87
88    }
89
90    if (isDigit(thisChar)) {
91
92      Serial.println("it's a numeric digit");
93
94    }
95
96    if (isGraph(thisChar)) {
97
98      Serial.println("it's a printable character that's not whitespace");
99
100    }
101
102    if (isLowerCase(thisChar)) {
103
104      Serial.println("it's lower case");
105
106    }
107
108    if (isPrintable(thisChar)) {
109
110      Serial.println("it's printable");
111
112    }
113
114    if (isPunct(thisChar)) {
115
116      Serial.println("it's punctuation");
117
118    }
119
120    if (isSpace(thisChar)) {
121
122      Serial.println("it's a space character");
123
124    }
125
126    if (isUpperCase(thisChar)) {
127
128      Serial.println("it's upper case");
129
130    }
131
132    if (isHexadecimalDigit(thisChar)) {
133
134      Serial.println("it's a valid hexadecimaldigit (i.e. 0 - 9, a - F, or A - F)");
135
136    }
137
138    // add some space and ask for another byte:
139
140    Serial.println();
141
142    Serial.println("Give me another byte:");
143
144    Serial.println();
145
146  }
147}