| /* | |
| String to Integer conversion | |
| Reads a serial input string until it sees a newline, then converts the string | |
| to a number if the characters are digits. | |
| The circuit: | |
| - No external components needed. | |
| created 29 Nov 2010 | |
| by Tom Igoe | |
| This example code is in the public domain. | |
| https://www.arduino.cc/en/Tutorial/BuiltInExamples/StringToInt | |
| */ | |
| String inString = ""; // string to hold input | |
| void setup() { | |
| // Open serial communications and wait for port to open: | |
| Serial.begin(9600); | |
| while (!Serial) { | |
| ; // wait for serial port to connect. Needed for native USB port only | |
| } | |
| // send an intro: | |
| Serial.println("\n\nString toInt():"); | |
| Serial.println(); | |
| } | |
| void loop() { | |
| // Read serial input: | |
| while (Serial.available() > 0) { | |
| int inChar = Serial.read(); | |
| if (isDigit(inChar)) { | |
| // convert the incoming byte to a char and add it to the string: | |
| inString += (char)inChar; | |
| } | |
| // if you get a newline, print the string, then the string's value: | |
| if (inChar == '\n') { | |
| Serial.print("Value:"); | |
| Serial.println(inString.toInt()); | |
| Serial.print("String: "); | |
| Serial.println(inString); | |
| // clear the string for new input: | |
| inString = ""; | |
| } | |
| } | |
| } | |