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--- en:iot-open:programming_fundamentals_rtu:building_your_first_project [2018/01/16 09:23] – Agrisnik
+++ en:iot-open:programming_fundamentals_rtu:building_your_first_project [2020/07/20 09:00] (current) – external edit 127.0.0.1
@@ Line 143: / Line 143: @@
 ===== Hello World =====
+"//Hello World//" program is the simplest program, because it simply outputs the text to the screen.
+Here is the //Hello World// program for Arduino that outputs the text on the Serial Monitor each second:
+<code c>
+void setup() {
+  Serial.begin(9600); //establishes the connection with the serial port
+}
+void loop() {
+  Serial.println("Hello World"); //prints out the line with the text
+  delay(1000);                   //pause for 1 second
+}
+</code>
+Serial Monitor can be found following the path: //Tools->Serial Monitor//.
+In the code can be seen that the //setup()// function contains the following command:
+<code c>
+Serial.begin(9600);
+</code>
+This statement opens the serial port at the initialization of the program so that the Serial Monitor can be used for outputting text or values on the screen.
+For printing out text the following command is used:
+<code c>
+Serial.println("Hello World");
+</code>
+**Check yourself**
+. How to attach any library to a sketch?
+. What command expressions are not usually separate by semicolon?
+. How to establish a serial communication between devices?
+. How does delay() command works?
+*Stops LED blinking specified number of milliseconds
+*Stops program execution for a specified number of seconds
+*Stops program execution for a specified number of milliseconds

en/iot-open/programming_fundamentals_rtu/building_your_first_project.1516094586.txt.gz · Last modified: 2020/07/20 09:00 (external edit)