ResistorMode.PullDown

[bberrevoets]

Hello,

Can someone tell me what's wrong with the next code?

Code:

using System;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using ChipworkX.Hardware;

namespace MicroFrameworkFlashlight
{
    public class Program
    {
        public static void Main()
        {
            Cpu.Pin lampPin = Processor.Pins.PC5;
            Cpu.Pin switchPin = Processor.Pins.PA23;

            OutputPort lampOutput = new OutputPort(lampPin, false);
            InputPort switchInput = new InputPort(switchPin, false, Port.ResistorMode.PullDown);

            while (true)
            {
                lampOutput.Write(switchInput.Read());
            }
        }

    }
}

Greetings.

[support]

ChipworkX hardware does not support internal pull down resistors on Digital IOs. only Pull ups are there.

[bberrevoets]

Hello,

Thanks for the quick response.

But does this mean that in the examples in the book "Embedded Programming with the Microsoft .NET Micro Framework" everything where stands InputPort.Read() i have to use !InputPort.Read() ?

Greetings.

[SupportAdmin]

no! that will not work. What hardware are you using?

[bberrevoets]

I use ChipworkX V1.5

[SupportAdmin]

I mean you use our development system? Then why do you need pull-down? pull-up should get you anything you like.

By the way, have you taken a look at our free ebook for NETMF? http://www.tinyclr.com/downloads/Beginners%20guide%20to%20NETMF.pdf

[bberrevoets]

Ok, what i use is microframework 3.0 and i use the chipworks development software.
I'am reading the book that i mentioned before from microsoft, which is for micro framework 3.0.
in the examples they use, they use pulldown just like int the code i showed, but when i use pullup,
because pulldown causes an error, everything is the opposite, so pushing the button gives me 0 and releasing it gives me 1.
So is this the correct behaviour, that what i mean?

 Greetings,

BBerreVOETS

[bberrevoets]

Ok, thanks i see it. i was right.

Everything i have to do the otherway around then the examples int he book.

Tnkx