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/*
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 = "";
}
}
}
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