Differences

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--- arduino:program_structure [2012/09/13 04:37] – mithat
+++ arduino:program_structure [2012/09/14 01:20] (current) – mithat
@@ Line 1: / Line 1: @@
-====== Program structure ======
+Moved [[arduino:arduino_crash_course:program_structure|here]].
-===== Main loop =====
-<file c program_structure.ino>
-void setup() {
-  // Stuff in here gets run once (when the program starts).
-}
-void loop() {
-  // Stuff in here gets run over and over and over again (until you turn the power off).
-}
-</file>
-===== Blink an LED =====
-Blinking an LED is the microcontroller equivalent to a "[[https://en.wikipedia.org/wiki/Hello_world|Hello world]]" program in general programming.
-<file c BlinkMe.ino>
-/*
-  BlinkMe
-  Turn an LED on and off once per second.
- */
-void setup() {
-  // make pin 13 an output
-  pinMode(13, OUTPUT);
-}
-void loop() {
-  digitalWrite(13, HIGH);    // turn the LED on (HIGH is the voltage level)
-  delay(1000);               // wait one second (1000 milliseconds)
-  digitalWrite(13, LOW);     // turn the LED off by making the voltage LOW
-  delay(1000);               // wait one second
-}
-</file>
-Here is the same example but using a **variable** to store the pin number.
-<file c BlinkMe2.ino>
-/*
-  BlinkMe
-  Turn an LED on and off once per second (improved version).
- */
-// use led_pin to store the pin number that drives the LED
-int led_pin = 13;
-void setup() {
-  // make the pin an output
-  pinMode(led_pin, OUTPUT);
-}
-void loop() {
-  digitalWrite(led_pin, HIGH);   // turn the LED on
-  delay(1000);                   // wait one second
-  digitalWrite(led_pin, LOW);    // turn the LED off by making the voltage LOW
-  delay(1000);                   // wait one second
-}
-</file>
-Now if we need to change the pin number, we only need to change it in one place.