Practical Arduino C

Version 2 IDE

If you are using the new version 2 IDE then please refer to the page with notes on the new software.

The changes from version 1 are generally small and very positive but please read the notes as there is a potential bug that is best avoided at this early stage in learning C on an Arduino.

Page 1

Serial.begin(115200);
Serial.println("Hello World");

Page 2

Page 4

void setup() {
    // put your setup code here, to run once:
    Serial.begin(115200);
    Serial.println("Type me a number");
}
void loop() {
    // put your main code here, to run repeatedly:
    char nChar = 0;
    if (Serial.available() > 0) {
        nChar = Serial.read();
        if(isDigit(nChar)){
            Serial.print("Number received: ");
            Serial.println(nChar);
            Serial.print("In binary: ");
            Serial.println(nChar - 48, BIN);
            Serial.println("Send me another");
        } else {
            Serial.println("Did not look like a number");
        }
    }
}

Page 6

void loop() {
    // put your main code here, to run repeatedly:
    char nChar = 0;
    if (Serial.available() > 0) {
        nChar = Serial.read();
        //if(isDigit(nChar)){
            Serial.print("Number received: ");
            Serial.println(nChar);
            Serial.print("In binary: ");
            Serial.println(nChar - 48, BIN);
            Serial.println("Send me another");
       // } else {
       //     Serial.println("Did not look like a number");
        //}
    }
}