AnalogWrite not working in If Statement

Projects Programming
1

Arduino Uno with ATMega328P Processor.AnalogWrite not working properly in If statement. It changes the brightness of Led like there isnt any if statements at all. There are 2 potentiometers to create an intervall in which to program increases the brightness of led starting 40% of maxi. When its lower then min value led is closed.

int ledPin = 6;
int sensorPot = 1; // its a potentiometer for now
int maxPot = 7; // potentiometer 
int minPot = 3; // potentiometer
int fortypercent = 255*0.4;
int brightness = 0;

void setup() {

  pinMode(ledPin, OUTPUT);
  pinMode(sensorPot, INPUT);
  pinMode(maxPot, INPUT);
  pinMode(minPot, INPUT);

  Serial.begin(9600);

}
void loop() {

  int start = analogRead(minPot);
  int maxVal = analogRead(maxPot);
  int sensor = analogRead(sensorPot);
  Serial.println(sensor/4);
   Serial.println(start/4);
  Serial.println(maxVal);
////  
if(sensor/4 > start/4){
    analogWrite(ledPin,sensor/4);
  }
else if(sensor = baslangic){
  analogWrite(ledPin,LOW);
  }
else if ((start < sensor < maxVal)) {
  brightness = sensor/4 - fortypercent;
  analogWrite(ledPin,brightness); 
  }else if (sensor = maxVal){
    analogWrite(ledPin , 255);
    }



}
2

That's interesting (and unlikely) - what proof do you have?

3

aomerk:
Arduino Uno with ATMega328P Processor cant execute AnalogWrite in If statement.

How do you know? What actually happens?

Post a sample of the output when you run the program.

...R

4

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5

Code: [Select]

analogWrite(analogOutPin, LOW);

nonsense!
Code: [Select]

analogWrite(analogOutPin, 0);

Perhaps!

You need to look at the source of analogWrite for the AVR processors, particularly for an argument of zero (aka LOW) :wink:

6

(deleted)

7 
else if(sensor = baslangic){

That is an assignment statement, not a comparison. = != ==

else if ((start < sensor < maxVal)) {

That is NOT how to test that a value is in a range. That is testing that start < sensor, which is either true or false, is less than maxVal. Unless maxVal is less than 2, that statement will always be true.