Embedded programming
Arduino 1.0 "a layer on top of "C" language".
I have used Arduino to program the microcontroler.
Arduino is more user friendly as a platform,so I think is more realistic to learn how to use this one other than learning "C" programming.
1_ARDUINO PINS
I need this small scheme to program the input and output pins.
2_WRITING THE CODE
I have open one of the examples and edited it.
First thing is to understand Arduino works with 2 functions SETUP and LOOP.
What I have programm is the frecuency of the LED I have used on the board. I have stablish a variable ( m) so I can change anytime the speed of the blinking on the LED.
The other behave I have also program is what happens when I press the botton. The light is not blinking any more, it is constantly lighting up.
3_CODE
/* Blink Turns on an LED on for one second, then off for one second, repeatedly. This example code is in the public domain. */ // This function calculates the average between 2 variables. int media(int valor1, int valor2) { int temp; temp = valor1 + valor2; // addiction temp = temp / 2; // sustraction return temp; // return the value void setup() { // initialize the digital pin as an output. // Pin 8 has an LED connected on most Arduino boards: pinMode(8, OUTPUT); } void loop() { int m; int entrada; // reading the digital value of pin number 7 entrada = digitalRead(7); // If the entry has value= 0 (button not pressed) blinking (the block between{}will execute) if (entrada == LOW) { m = media(400, 200); digitalWrite(8, HIGH); // set the LED on delay(m); // wait for a second digitalWrite(8, LOW); // set the LED off delay(m); // wait for a second } else { // if not, the LED will be active and turn on digitalWrite(8, HIGH); } }
4_IMAGES
