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Corretions and refinements to the String examples

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This commit is contained in:
Federico Vanzati
2012-04-06 12:59:54 +02:00
parent ade4893f58
commit 383ac95f3e
1111 changed files with 244427 additions and 223 deletions
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build/shared/examples/08.Strings/CharacterAnalysis/.CharacterAnalysis.ino.swp Normal file
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7
build/shared/examples/08.Strings/CharacterAnalysis/CharacterAnalysis.ino
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@ -16,7 +16,7 @@ void setup() {
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
// send an intro:
Serial.println("send any byte and I'll tell you everything I can about it");
@ -82,8 +82,3 @@ void loop() {
}
}

6
build/shared/examples/08.Strings/StringAdditionOperator/StringAdditionOperator.ino
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@ -21,8 +21,8 @@ void setup() {
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
stringOne = String("stringThree = ");
stringTwo = String("this string");
stringThree = String ();
@ -63,4 +63,4 @@ void loop() {
// do nothing while true:
while(true);
}
}

7
build/shared/examples/08.Strings/StringAppendOperator/StringAppendOperator.ino
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@ -14,11 +14,11 @@
String stringOne, stringTwo;
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
stringOne = String("Sensor ");
stringTwo = String("value");
@ -66,4 +66,5 @@ void loop() {
// do nothing while true:
while(true);
}
}

16
build/shared/examples/08.Strings/StringCaseChanges/StringCaseChanges.ino
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@ -13,11 +13,11 @@
*/
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString case changes:");
}
@ -26,16 +26,16 @@ void loop() {
// toUpperCase() changes all letters to upper case:
String stringOne = "<html><head><body>";
Serial.println(stringOne);
stringOne = (stringOne.toUpperCase());
stringOne.toUpperCase();
Serial.println(stringOne);
// toLowerCase() changes all letters to lower case:
// toLowerCase() changes all letters to lower case:
String stringTwo = "</BODY></HTML>";
Serial.println(stringTwo);
stringTwo = stringTwo.toLowerCase();
stringTwo.toLowerCase();
Serial.println(stringTwo);
// do nothing while true:
while(true);
}

13
build/shared/examples/08.Strings/StringCharacters/StringCharacters.ino
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@ -17,7 +17,7 @@ void setup() {
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString charAt() and setCharAt():");
}
@ -26,18 +26,19 @@ void loop() {
// make a string to report a sensor reading:
String reportString = "SensorReading: 456";
Serial.println(reportString);
// the reading's most significant digit is at position 15 in the reportString:
String mostSignificantDigit = reportString.charAt(15);
char mostSignificantDigit = reportString.charAt(15);
Serial.println("Most significant digit of the sensor reading is: " + mostSignificantDigit);
// add blank space:
// add blank space:
Serial.println();
// you can alo set the character of a string. Change the : to a = character
reportString.setCharAt(13, '=');
Serial.println(reportString);
// do nothing while true:
while(true);
}
}

10
build/shared/examples/08.Strings/StringComparisonOperators/StringComparisonOperators.ino
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@ -11,15 +11,15 @@
This example code is in the public domain.
*/
String stringOne, stringTwo;
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
stringOne = String("this");
stringTwo = String("that");
@ -62,7 +62,7 @@ void loop() {
// a numeric string compared to the number it represents:
stringOne = "1";
int numberOne = 1;
if (stringOne == numberOne) {
if (stringOne.toInt() == numberOne) {
Serial.println(stringOne + " = " + numberOne);
}
@ -126,4 +126,4 @@ void loop() {
}
}
}
}

76
build/shared/examples/08.Strings/StringConstructors/StringConstructors.ino
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@ -13,52 +13,58 @@
*/
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
Serial.println("\n\nString Constructors:");
}
void loop() {
// using a constant String:
String stringOne = "Hello String";
Serial.println(stringOne); // prints "Hello String"
// using a constant String:
String stringOne = "Hello String";
Serial.println(stringOne); // prints "Hello String"
// converting a constant char into a String:
stringOne = String('a');
Serial.println(stringOne); // prints "a"
// converting a constant char into a String:
stringOne = String('a');
Serial.println(stringOne); // prints "a"
// converting a constant string into a String object:
String stringTwo = String("This is a string");
Serial.println(stringTwo); // prints "This is a string"
// converting a constant string into a String object:
String stringTwo = String("This is a string");
Serial.println(stringTwo); // prints "This is a string"
// concatenating two strings:
stringOne = String(stringTwo + " with more");
// prints "This is a string with more":
Serial.println(stringOne);
// concatenating two strings:
stringOne = String(stringTwo + " with more");
// prints "This is a string with more":
Serial.println(stringOne);
// using a constant integer:
stringOne = String(13);
Serial.println(stringOne); // prints "13"
// using an int and a base:
stringOne = String(analogRead(A0), DEC);
// prints "453" or whatever the value of analogRead(A0) is
Serial.println(stringOne);
// using a constant integer:
stringOne = String(13);
Serial.println(stringOne); // prints "13"
// using an int and a base (hexadecimal):
stringOne = String(45, HEX);
// prints "2d", which is the hexadecimal version of decimal 45:
Serial.println(stringOne);
// using an int and a base:
stringOne = String(analogRead(A0), DEC);
// prints "453" or whatever the value of analogRead(A0) is
Serial.println(stringOne);
// using an int and a base (binary)
stringOne = String(255, BIN);
// prints "11111111" which is the binary value of 255
Serial.println(stringOne);
// using a long and a base:
stringOne = String(millis(), DEC);
// prints "123456" or whatever the value of millis() is:
Serial.println(stringOne);
// using an int and a base (hexadecimal):
stringOne = String(45, HEX);
// prints "2d", which is the hexadecimal version of decimal 45:
Serial.println(stringOne);
// using an int and a base (binary)
stringOne = String(255, BIN);
// prints "11111111" which is the binary value of 255
Serial.println(stringOne);
// using a long and a base:
stringOne = String(millis(), DEC);
// prints "123456" or whatever the value of millis() is:
Serial.println(stringOne);
// do nothing while true:
while(true);
}
}

17
build/shared/examples/08.Strings/StringIndexOf/StringIndexOf.ino
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@ -13,18 +13,18 @@
*/
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString indexOf() and lastIndexOf() functions:");
}
void loop() {
// indexOf() returns the position (i.e. index) of a particular character
// indexOf() returns the position (i.e. index) of a particular character
// in a string. For example, if you were parsing HTML tags, you could use it:
String stringOne = "<HTML><HEAD><BODY>";
int firstClosingBracket = stringOne.indexOf('>');
@ -53,12 +53,13 @@ void loop() {
Serial.println("The index of the last list item in the string " + stringOne + " is " + lastListItem);
// lastIndexOf() can also search for a string:
stringOne = "<p>Lorem ipsum dolor sit amet</p><p>Ipsem</p><p>Quod</p>";
// lastIndexOf() can also search for a string:
stringOne = "<p>Lorem ipsum dolor sit amet</p><p>Ipsem</p><p>Quod</p>";
int lastParagraph = stringOne.lastIndexOf("<p");
int secondLastGraf = stringOne.lastIndexOf("<p", lastParagraph - 1);
Serial.println("The index of the second last paragraph tag " + stringOne + " is " + secondLastGraf);
// do nothing while true:
while(true);
}
// do nothing while true:
while(true);
}

9
build/shared/examples/08.Strings/StringLength/StringLength.ino
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@ -15,8 +15,13 @@ String txtMsg = ""; // a string for incoming text
int lastStringLength = txtMsg.length(); // previous length of the String
void setup() {
// open the serial port:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
Serial.println("\n\nString length():");
}
void loop() {
@ -40,4 +45,4 @@ void loop() {
// note the length for next time through the loop:
lastStringLength = txtMsg.length();
}
}
}

6
build/shared/examples/08.Strings/StringLengthTrim/StringLengthTrim.ino
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@ -13,11 +13,11 @@
*/
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString length() and trim():");
}
@ -30,7 +30,7 @@ void loop() {
Serial.println(stringOne.length());
// trim the white space off the string:
stringOne = stringOne.trim();
stringOne.trim();
Serial.print(stringOne);
Serial.print("<--- end of trimmed string. Length: ");
Serial.println(stringOne.length());

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build/shared/examples/08.Strings/StringReplace/.swp Normal file
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build/shared/examples/08.Strings/StringReplace/StringReplace.ino
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@ -13,29 +13,36 @@
*/
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString replace:");
Serial.println("\n\nString replace:\n");
}
void loop() {
String stringOne = "<html><head><body>";
Serial.println(stringOne);
// replace() changes all instances of one substring with another:
String stringTwo = stringOne.replace("<", "</");
Serial.println(stringTwo);
// first, make a copy of th original string:
String stringTwo = stringOne;
// then perform the replacements:
stringTwo.replace("<", "</");
// print the original:
Serial.println("Original string: " + stringOne);
// and print the modified string:
Serial.println("Modified string: " + stringTwo);
// you can also use replace() on single characters:
String normalString = "bookkeeper";
Serial.println("normal: " + normalString);
String leetString = normalString.replace('o', '0');
leetString = leetString.replace('e', '3');
String leetString = normalString;
leetString.replace('o', '0');
leetString.replace('e', '3');
Serial.println("l33tspeak: " + leetString);
// do nothing while true:
while(true);
}
}

22
build/shared/examples/08.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.ino
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@ -13,30 +13,30 @@
*/
void setup() {
// Open serial communications and wait for port to open:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString startsWith() and endsWith():");
}
void loop() {
// startsWith() checks to see if a String starts with a particular substring:
String stringOne = "HTTP/1.1 200 OK";
Serial.println(stringOne);
// startsWith() checks to see if a String starts with a particular substring:
String stringOne = "HTTP/1.1 200 OK";
Serial.println(stringOne);
if (stringOne.startsWith("HTTP/1.1")) {
Serial.println("Server's using http version 1.1");
}
// you can also look for startsWith() at an offset position in the string:
stringOne = "HTTP/1.1 200 OK";
stringOne = "HTTP/1.1 200 OK";
if (stringOne.startsWith("200 OK", 9)) {
Serial.println("Got an OK from the server");
}
// endsWith() checks to see if a String ends with a particular character:
String sensorReading = "sensor = ";
sensorReading += analogRead(A0);
@ -49,6 +49,6 @@ void loop() {
}
// do nothing while true:
while(true);
}
// do nothing while true:
while(true);
}

8
build/shared/examples/08.Strings/StringSubstring/StringSubstring.ino
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@ -13,12 +13,12 @@
*/
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// Wait for port to be opened:
// this check is only needed on the Leonardo:
while (!Serial) ;
;
;
Serial.println("\n\nString substring():");
}
@ -26,7 +26,7 @@ void loop() {
// Set up a String:
String stringOne = "Content-Type: text/html";
Serial.println(stringOne);
// substring(index) looks for the substring from the index position to the end:
if (stringOne.substring(19) == "html") {
Serial.println("It's an html file");

10
build/shared/examples/08.Strings/StringToInt/StringToInt.ino
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@ -16,8 +16,13 @@
String inString = ""; // string to hold input
void setup() {
// Initialize serial communications:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
Serial.println("\n\nString toInt():");
}
void loop() {
@ -42,6 +47,3 @@ void loop() {
}
}

239
build/shared/examples/08.Strings/StringToIntRGB/StringToIntRGB.ino
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@ -25,8 +25,13 @@ int currentColor = 0;
int red, green, blue = 0;
void setup() {
// Initialize serial communications:
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) ;
;
Serial.println("\n\nString toInt() RGB:");
// set LED cathode pins as outputs:
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
@ -102,122 +107,122 @@ void loop() {
/*
Here's a Processing sketch that will draw a color wheel and send a serial
string with the color you click on:
// Subtractive Color Wheel with Serial
// Based on a Processing example by Ira Greenberg.
// Serial output added by Tom Igoe
//
// The primaries are red, yellow, and blue. The secondaries are green,
// purple, and orange. The tertiaries are yellow-orange, red-orange,
// red-purple, blue-purple, blue-green, and yellow-green.
//
// Create a shade or tint of the subtractive color wheel using
// SHADE or TINT parameters.
// Updated 29 November 2010.
import processing.serial.*;
int segs = 12;
int steps = 6;
float rotAdjust = TWO_PI / segs / 2;
float radius;
float segWidth;
float interval = TWO_PI / segs;
Serial myPort;
void setup() {
size(200, 200);
background(127);
smooth();
ellipseMode(RADIUS);
noStroke();
// make the diameter 90% of the sketch area
radius = min(width, height) * 0.45;
segWidth = radius / steps;
// swap which line is commented out to draw the other version
// drawTintWheel();
drawShadeWheel();
// open the first serial port in your computer's list
myPort = new Serial(this, Serial.list()[0], 9600);
}
void drawShadeWheel() {
for (int j = 0; j < steps; j++) {
color[] cols = {
color(255-(255/steps)*j, 255-(255/steps)*j, 0),
color(255-(255/steps)*j, (255/1.5)-((255/1.5)/steps)*j, 0),
color(255-(255/steps)*j, (255/2)-((255/2)/steps)*j, 0),
color(255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j, 0),
color(255-(255/steps)*j, 0, 0),
color(255-(255/steps)*j, 0, (255/2)-((255/2)/steps)*j),
color(255-(255/steps)*j, 0, 255-(255/steps)*j),
color((255/2)-((255/2)/steps)*j, 0, 255-(255/steps)*j),
color(0, 0, 255-(255/steps)*j),
color(0, 255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j),
color(0, 255-(255/steps)*j, 0),
color((255/2)-((255/2)/steps)*j, 255-(255/steps)*j, 0)
};
for (int i = 0; i < segs; i++) {
fill(cols[i]);
arc(width/2, height/2, radius, radius,
interval*i+rotAdjust, interval*(i+1)+rotAdjust);
}
radius -= segWidth;
}
}
void drawTintWheel() {
for (int j = 0; j < steps; j++) {
color[] cols = {
color((255/steps)*j, (255/steps)*j, 0),
color((255/steps)*j, ((255/1.5)/steps)*j, 0),
color((255/steps)*j, ((255/2)/steps)*j, 0),
color((255/steps)*j, ((255/2.5)/steps)*j, 0),
color((255/steps)*j, 0, 0),
color((255/steps)*j, 0, ((255/2)/steps)*j),
color((255/steps)*j, 0, (255/steps)*j),
color(((255/2)/steps)*j, 0, (255/steps)*j),
color(0, 0, (255/steps)*j),
color(0, (255/steps)*j, ((255/2.5)/steps)*j),
color(0, (255/steps)*j, 0),
color(((255/2)/steps)*j, (255/steps)*j, 0)
};
for (int i = 0; i < segs; i++) {
fill(cols[i]);
arc(width/2, height/2, radius, radius,
interval*i+rotAdjust, interval*(i+1)+rotAdjust);
}
radius -= segWidth;
}
}
void draw() {
// nothing happens here
}
void mouseReleased() {
// get the color of the mouse position's pixel:
color targetColor = get(mouseX, mouseY);
// get the component values:
int r = int(red(targetColor));
int g = int(green(targetColor));
int b = int(blue(targetColor));
// make a comma-separated string:
String colorString = r + "," + g + "," + b + "\n";
// send it out the serial port:
myPort.write(colorString );
}
*/
string with the color you click on:
// Subtractive Color Wheel with Serial
// Based on a Processing example by Ira Greenberg.
// Serial output added by Tom Igoe
//
// The primaries are red, yellow, and blue. The secondaries are green,
// purple, and orange. The tertiaries are yellow-orange, red-orange,
// red-purple, blue-purple, blue-green, and yellow-green.
//
// Create a shade or tint of the subtractive color wheel using
// SHADE or TINT parameters.
// Updated 29 November 2010.
import processing.serial.*;
int segs = 12;
int steps = 6;
float rotAdjust = TWO_PI / segs / 2;
float radius;
float segWidth;
float interval = TWO_PI / segs;
Serial myPort;
void setup() {
size(200, 200);
background(127);
smooth();
ellipseMode(RADIUS);
noStroke();
// make the diameter 90% of the sketch area
radius = min(width, height) * 0.45;
segWidth = radius / steps;
// swap which line is commented out to draw the other version
// drawTintWheel();
drawShadeWheel();
// open the first serial port in your computer's list
myPort = new Serial(this, Serial.list()[0], 9600);
}
void drawShadeWheel() {
for (int j = 0; j < steps; j++) {
color[] cols = {
color(255-(255/steps)*j, 255-(255/steps)*j, 0),
color(255-(255/steps)*j, (255/1.5)-((255/1.5)/steps)*j, 0),
color(255-(255/steps)*j, (255/2)-((255/2)/steps)*j, 0),
color(255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j, 0),
color(255-(255/steps)*j, 0, 0),
color(255-(255/steps)*j, 0, (255/2)-((255/2)/steps)*j),
color(255-(255/steps)*j, 0, 255-(255/steps)*j),
color((255/2)-((255/2)/steps)*j, 0, 255-(255/steps)*j),
color(0, 0, 255-(255/steps)*j),
color(0, 255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j),
color(0, 255-(255/steps)*j, 0),
color((255/2)-((255/2)/steps)*j, 255-(255/steps)*j, 0)
};
for (int i = 0; i < segs; i++) {
fill(cols[i]);
arc(width/2, height/2, radius, radius,
interval*i+rotAdjust, interval*(i+1)+rotAdjust);
}
radius -= segWidth;
}
}
void drawTintWheel() {
for (int j = 0; j < steps; j++) {
color[] cols = {
color((255/steps)*j, (255/steps)*j, 0),
color((255/steps)*j, ((255/1.5)/steps)*j, 0),
color((255/steps)*j, ((255/2)/steps)*j, 0),
color((255/steps)*j, ((255/2.5)/steps)*j, 0),
color((255/steps)*j, 0, 0),
color((255/steps)*j, 0, ((255/2)/steps)*j),
color((255/steps)*j, 0, (255/steps)*j),
color(((255/2)/steps)*j, 0, (255/steps)*j),
color(0, 0, (255/steps)*j),
color(0, (255/steps)*j, ((255/2.5)/steps)*j),
color(0, (255/steps)*j, 0),
color(((255/2)/steps)*j, (255/steps)*j, 0)
};
for (int i = 0; i < segs; i++) {
fill(cols[i]);
arc(width/2, height/2, radius, radius,
interval*i+rotAdjust, interval*(i+1)+rotAdjust);
}
radius -= segWidth;
}
}
void draw() {
// nothing happens here
}
void mouseReleased() {
// get the color of the mouse position's pixel:
color targetColor = get(mouseX, mouseY);
// get the component values:
int r = int(red(targetColor));
int g = int(green(targetColor));
int b = int(blue(targetColor));
// make a comma-separated string:
String colorString = r + "," + g + "," + b + "\n";
// send it out the serial port:
myPort.write(colorString );
}
*/