Hi everyone , I am so new to arduino that I could not tell what is the difference between these 2 codes , code 2 is written by me but it doesn't have the solid feel as code 1.
Can you please take a look ?
Code 1
const int LED = 13; // the pin for the LED
const int BUTTON = 7; // the input pin where the
// pushbutton is connected
int val = 0; // val will be used to store the state
// of the input pin
int old_val = 0; // this variable stores the previous
// value of "val"
int state = 0; // 0 = LED off and 1 = LED on
void setup() {
pinMode(LED, OUTPUT); // tell Arduino LED is an output
pinMode(BUTTON, INPUT); // and BUTTON is an input
}
void loop(){
val = digitalRead(BUTTON); // read input value and store it
// yum, fresh
// check if there was a transition
if ((val == HIGH) && (old_val == LOW)){
state = 1 - state;
delay(10);
}
old_val = val; // val is now old, let's store it
if (state == 1) {
digitalWrite(LED, HIGH); // turn LED ON
} else {
digitalWrite(LED, LOW);
}
}
Code 2
const int led =13;
const int button =7;
int state = 0;
void setup()
{
pinMode(led,OUTPUT);
pinMode(button,INPUT);
}
void loop()
{
if(digitalRead(button))
{
delay(10);
state = 1-state;
}
if(!state)
digitalWrite(led,LOW);
else
digitalWrite(led,HIGH);
}