gpio.Gpio_Open(hGPIO) always return FALSE

Technical Support
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#1 
    public bool InitializeLibraries()
    {
        bool isInitialized = false;
        try
        {
            hGPIO = gpio.Gpio_Init(null); ///< Initialize GPIO library.
            if (hGPIO != null)
            {
                isInitialized = gpio.Gpio_Open(hGPIO); ///< **-- always return false**
                if (isInitialized.Equals(true))
                {
                    pin = new gpio.uIo();
                    pin.type = (ushort)gpio.tIoType.ioColibriPin;
                    pin.number = 101;
                    gpio.Gpio_ConfigureAsGpio(hGPIO, pin); ///<configure provided sodimm pin as gpio
                }
            }
        }
        catch
        {
        }
        return isInitialized;
    }

Please anyone can help ?

#2

@Dhananjay If I am correct you are working on Colibri T20 module, and API’s you have implemented in your application is meant to work for Vybrid and iMX6 modules.

Please use correct library: Toradex CE Libraries and Code Samples | Toradex Developer Center

Note: Please do mention complete details about your platform( module, image, carrier board, application details) always whenever you write post new question on community so that anyone can answer your queries.

#3

Its working after I have used the old dll ie “GpioLib.dll” in new Toradex sdk

#4

Hello Dhananjay,
I am trying to implement mentioned CODE, but getting message of " Unable to open GPIO, check if handle is valid". Can you please know me the exact problem?

using System;
using System.Linq;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace Gpio_Demo_Csharp
{
    static class Program
    {
        
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [MTAThread]
        static void Main()
        {   
            Application.Run(new Form1());
        }
    }
}