Cannot Use pin with multiple instances Exeption

[Nikongen]

Hi,

i have a problem: System.Exeption: Cannot use pin with multiple instances. Unexport the previous instance with Dispose() first (pin 24)

I have only one instance of pin 24 in my Code and I get this Exeption where ever I delcare.

in_gpio24 = new GPIOMem(GPIOPins.V2_GPIO_24, GPIODirection.In);

Raspberry Pi 2

I'm quite new to programming so please help me to fix this problem

[cypherkey]

That exception is only thrown when you've used that pin already. Can you post all your code?

[Nikongen]

I use only two pins in my Code (17 and 24) It was just a Test pogramm. I checked more then 3 Times of i Used Pin 24 Twice.

I will Post my Code tommorow

Am Mittwoch, 5. August 2015 schrieb cypherkey :

That exception is only thrown when you've used that pin already. Can you post all your code?

— Reply to this email directly or view it on GitHub https://github.com/cypherkey/RaspberryPi.Net/issues/32#issuecomment-127819982 .

[Nikongen]

class c_GPIO
{
    public enum IN : byte
    {
        GPIO24 = 24
    };
    public enum OUT : byte
    {
        GPIO17 = 17
    };

    //GPIO IN
    GPIOMem in_gpio24;


    //GPIO OUT
    GPIOMem out_gpio17;


    public c_GPIO()
    {

        InitializeGPIO();
    }

    ~c_GPIO()
    {
        //GPIO freigeben
        //in_gpio24.Dispose();

        //out_gpio17.Dispose();
    }


    public void InitializeGPIO()
    {
        //IN
        in_gpio24 = new GPIOMem(GPIOPins.V2_GPIO_24, GPIODirection.In);

        //Out#
        out_gpio17 = new GPIOMem(GPIOPins.V2_GPIO_17);
    }

    //Testen ob Schalter geschlossen ist
    public bool CheckInput(IN GPIO_Pin)
    {
        GPIOMem Input;
        switch (GPIO_Pin)
        {
            case IN.GPIO24: Input = in_gpio24;
                break;
            default:
                return false;
        }
        if (Input.Read() == PinState.High)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    //Outputs schalten
    public bool SwitchOut(OUT GPIO_Pin, bool Closed)
    {
        GPIOMem Output;
        switch (GPIO_Pin)
        {
            case OUT.GPIO17: Output = out_gpio17;
                break;
            default:
                return false;
        }
        Output.Write(Closed);
        return true;
    }
}

[cypherkey]

I suspect it has to do with when you assign the Input variable. It may be making a copy of the object and therefore re-calling it's constructor. Can you change your code to pass the GPIOMem object as an argument and not the enum?

Unfortunately I don't have my PI anymore, so I can't test it.