Arduino: Serial Parse Integer
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Code
/* Serial input with parsing This example shows how to read a serial stream of comma-separated values, parse the ASCII numeric strings int numeric variables, and use them. The circuit: * LEDs on pins 5 and 6. But could be used for many things. created 7 May 2013 by Tom Igoe This example code is in the public domain. */ void setup() { Serial.begin(9600); } void loop() { // Assumes a string in from the serial port like so: // s ledNumber, brightness \n // for example: "s5,200\n": int ledNumber = 0; int brightness = 0; if (Serial.find("s")) { ledNumber = Serial.parseInt(); // parses numeric characters before the comma brightness = Serial.parseInt();// parses numeric characters after the comma // print the results back to the sender: Serial.print("LED number: " ); Serial.print(ledNumber); Serial.print(" at "); Serial.println(brightness); // set the LED: analogWrite(ledNumber, brightness); } }