I need help for my code

[ashio]

Hi !

I came here because I really need help for my code. So I have to make a program to make a push button a on/off switch. I found some code parts on internet and assembeld them into this code.

I want to convert the ternary condition to a classic if-else condition but all my atempts didn't work. So I ask if someon has the solution to my problem.

Thanks !

boolean lastButtonState = false;
boolean ledState = false;


void setup() {
  pinMode(2, OUTPUT);
  pinMode(7, INPUT);
}


void loop() {
  
  int buttonState = digitalRead(7);
  
  if (buttonState != lastButtonState) {
    lastButtonState = buttonState;
    
    if (buttonState == LOW) {
      ledState = (ledState == true) ? LOW: HIGH;
      digitalWrite(2, ledState);
    }
  
  }

}

[blh64]

@ashio

I want to convert the ternary condition to a classic if-else condition but all my atempts didn't work.

Why? Did your teacher ask you to do it that way?

What have you tried? Post your attempt at doing it and people will help. Writing code for others is not what this forum is about.

[alto777]

@ashio

I want to convert the ternary condition to a classic if-else condition

Seems straightforward. Do you understand how the ternary operator functions?

See

https://codefinity.com/courses/v2/59a3e4eb-a3a1-49a4-ba70-da98e8fee510/5429077a-e308-4fb9-ba81-7305f195200b/d8948c9a-7af9-4839-ac86-5c191b240295

and read far enough to see how it might look as an if/else statement.

a7

[awneil]

@ashio

I want to convert the ternary condition ...

You mean this?

@ashio

ledState = (ledState == true) ? LOW: HIGH;

@ashio

... to a classic if-else condition

so something like this:

if( some_condition )
{
   some_variable = this_value;
}
else
{
   some_variable = that_value;
}

Note that the == true is superfluous - you just need:

ledState = (ledState) ? LOW: HIGH;

Which actually just seems to be inverting the state:

ledState = !ledState;

[StefanL38]

Here, Let Me Google That For You

[kolaha]

void setup() {
  pinMode(2, OUTPUT);
  pinMode(7, INPUT); // external signal? if button then pullup needed
}

void loop() {
  static bool lastButtonState = false;
  bool buttonState = digitalRead(7);
  if (buttonState != lastButtonState) {
    lastButtonState = buttonState;
    if (buttonState == LOW)  digitalWrite(2, ! digitalRead(2));
    delay(20);
    while (digitalRead(7) == buttonState);
  }
}