Arduino Uno Quick Start Manual page 87

Figure 14 Find the sketchbook location in the Preferences.
TelegraphLibrary/examples/HelloWorld/HelloWorld.ino
#include "telegraph.h"
const unsigned int BAUD_RATE
const unsigned int OUTPUT_PIN = 13;
const unsigned int DIT_LENGTH = 200;
Telegraph telegraph(OUTPUT_PIN, DIT_LENGTH);
void setup() {
Serial.begin(BAUD_RATE);
}
void loop() {
telegraph.send_message("Hello,
delay(5000);
}
This sketch emits the string "Hello, world!" as Morse code every five seconds.
To achieve this, we include the definition of our
constants for the pin our LED is connected to and for the length of our dits.
Then we create a global
we then invoke send_message
When you compile this sketch, the Arduino IDE automatically compiles the
telegraph library, too. If you forgot to copy the library files to the
folder, you ll get an error message such as "Telegraph does not name a type."
Chapter 4. Building a Morse Code Generator Library
= 9600;
world!");
Telegraph object and an empty
on our Telegraph instance every five seconds.
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Telegraph class, and we define
setup function. In
libraries/Telegraph
68
loop ,
report erratum discuss