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Topic: PWM problems with Arduino Due? (Read 1 time) previous topic - next topic


Jun 08, 2013, 06:47 pm Last Edit: Jun 08, 2013, 07:15 pm by Persuader Reason: 1
Hey guys, I recently got my hands on an Arduino Due and I'm trying to familiarize myself with the various functions and the programming.

Now, the pins 2-13 are supposed to have PWM so I tried fading-in/out LEDs from these pins. I cannot use PWM with pins 6-7, but I can use the digitalWrite to blink the LEDs in those pins.

This is the code I am running:

Code: [Select]

int j;
int del=2;
int k=1;

void setup()
  pinMode(k, OUTPUT);

void loop() {
  for(j=0; j<=256; j++)
    analogWrite(k, j);

  for(j=256; j>=0; j--)
    analogWrite(k, j);

Am I doing something wrong? Is it possible that the board is defective?  Or perhaps that I've managed to somehow damage it?

Paul F.


Ah, yes, indeed I manually changed the code to all the numbers from 2-13 manually to see which of the pins where not working.
I actually discovered the issue when I tried to fade in/out LED from pins 13-5 with a for loop, then I noticed that the loop stuck at  LED7 every time, I then removed the for and changed variable k manually.

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