Cerbuino + PWM

Archive
1

Hello I want to test the first PWM example in GHI Electronics – Where Hardware Meets Software with Cerbuino
How can I assign the LED to the PWM channel?

2

Other than the reference to GHI.Premium.Hardware, the example would not really be changed much. You will use the GHI.OSHW.Hardware reference for the Cerbuino and [em]not[/em] the GHI.Premium.Hardware reference.

You will need to determine which output pin has the appropriate PWM Channel. For the Arduino-styled headers you can use this code to determine which pin has PWM to put your LED: FEZCerbuino.Pin.PWM.

For the Gadgeteer sockets you will need to reference the socket type P which has PWM Channels on pins 7, 8, and 9.


using System;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;

using GHI.OSHW.Hardware;

namespace MFConsoleApplication1
{
    public class Program
    {
        public static void Main()
        {
            PWM MyFader = new PWM(FEZCerbuino.Pin.PWM.D0, 10000, 0.1, false);

            double i = 0.0;
            while (true)
            {
                MyFader.DutyCycle = i;
                /* DutyCycle is not dynamic so we must make a call to
                 * Start() to refresh the object */
                MyFader.Start();

                if ((i += 0.1) >= 1.0)
                {
                    i = 0.0;
                }

                Thread.Sleep(10);
            }
        }

    }
}

This code uses D0 on the Arduino-Style Headers. Make sure you are using the proper resistors with the LED before attaching to the board.

3

Thanks, that looks a bit nicer.
But I mean the LED of the board.

4

Unfortunately it is not possible to assign that particular LED to a PWM channel. It is attached to pin PB1. You can only blink this LED by assigning it to an OutputPort.