My if statement is writing a value it shouldn't

Projects Programming
1

I have an if statement that is supposed to set an led to high if the variables value is 1. However the if statement is somehow writing the variable to a 1 when it is declared globally as 0. I used serial to print the value and it once the if statement runs it switches the value to a 1.

2

Here is my code.

int led1 = 13; // pin connected to led 1
int led2 = 12; // pin connected to led 2
int led3 = 11; // pin connected to led 3
int downButton = 7; // button used to decrease value
int upButton = 2;   // button used to increase value
int ledValue = 0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(downButton, INPUT);
  pinMode(upButton, INPUT);
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
}

void loop() {
  
  // put your main code here, to run repeatedly:
  if (ledValue = 1){
    digitalWrite(led1, HIGH);
  } else {
    digitalWrite(led1, LOW);
  }
  
}
3

Welcome to the forum!

Note the difference between "=" and "=="

4

Thank you. As always my mistake is something stupid and simple. I can never decide if that makes it more or less frustrating.

5

If the problem is solved, please mark thread

6

Ok.