How can I use windows forms to upload arduino sketch

Question

2.00/5 (1 vote)

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I'm trying to make a program that have to upload an Arduino file (.ino) by pressing a button on windows forms. I looked how to do it and I found that there is a package "ArduinoUploader", but I think I didn't understand how to use it. It give me this error when I press the button "System.NullReferenceException: 'Reference to an object not set to an object instance.'".
Please I need help to fix it. Thanks.

What I have tried:

C#

using ArduinoUploader;
using ArduinoUploader.Hardware;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

    private void SelectProgramButton_Click(object sender, EventArgs e)
    {
        var uploader = new ArduinoSketchUploader(
        new ArduinoSketchUploaderOptions()
        {
            FileName = @"C:\Users\.....\Desktop\cscharp\.....\.....\TEST.ino",
            PortName = "COM3",
            ArduinoModel = ArduinoModel.Mega2560
        });
        uploader.UploadSketch();
    }

Posted 13-May-21 22:58pm

Member 14786879

Updated 14-May-21 1:07am

CPallini

v2

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3 solutions

Solution 1

One of the variables in the above code is null. You will need to use your debugger to find out which one and why. It is not something that anyone here can do for you.

Posted 13-May-21 23:28pm

Richard MacCutchan

Solution 2

Maybe the specified serial port (COM3) is not available on your PC.
You should specify the valid port (or omit it, as pointed out here: GitHub - twinearthsoftware/ArduinoSketchUploader: A .NET library and a command line utility to upload a compiled sketch (. HEX file) directly to an Arduino board.[^]).

Posted 13-May-21 23:57pm

CPallini

Comments

Member 14786879 14-May-21 6:33am

The serial port is correct, it is COM3 connected to my Arduino Mega 2560

CPallini 14-May-21 6:50am

Could you, please, report the full exact error message?

Member 14786879 14-May-21 7:05am

I solved the problem, I was not pointing the .hex file. My bad. Thank you anyway.

CPallini 14-May-21 7:19am

You are welcome.

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Member 14786879 · Accepted Answer · 2021-05-14T01:07:00

using ArduinoUploader;
using ArduinoUploader.Hardware;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

    private void SelectProgramButton_Click(object sender, EventArgs e)
    {
        var uploader = new ArduinoSketchUploader(
        new ArduinoSketchUploaderOptions()
        {
            FileName = @"C:\Users\.....\Desktop\cscharp\.....\.....\TEST.ino.mega.hex",
            PortName = "COM3",
            ArduinoModel = ArduinoModel.Mega2560
        });
        uploader.UploadSketch();
    }