C#•2y ago

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using System;
using System.Diagnostics;
using System.IO.Ports;

namespace ABRA_KEYBOARD_CTRL
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Press ESC to stop");
            SerialPort port = new SerialPort("COM5", 115200);
            port.DataBits = 8;
            
            port.StopBits = StopBits.One;
            port.Handshake = Handshake.None;
            port.Parity = Parity.None;
            port.Open();
            port.Write("#Keyboard App Started#");
            do { 
                while (!Console.KeyAvailable) ;
                {
                    switch (Console.ReadKey(true).Key)
                    {

                        default:
                            Console.WriteLine("ERR!");
                            break;
                        case ConsoleKey.W:
                            Console.WriteLine("KeyPressed: W");
                            port.Write("1");
                            break;
                        case ConsoleKey.D:
                            Console.WriteLine("KeyPressed: D");
                            port.Write("D");
                            break;
                        case ConsoleKey.UpArrow:
                            Console.WriteLine("KeyPressed: up");
                            port.Write("3");
                            break;
                        case ConsoleKey.Escape:
                            port.Close();
                            Environment.Exit(0);
                            break;
                    }
                }
            }

            while (Console.ReadKey(true).Key != ConsoleKey.Escape);

            Process.GetCurrentProcess().WaitForExit();
        }
    }
}

using System;
using System.Diagnostics;
using System.IO.Ports;

namespace ABRA_KEYBOARD_CTRL
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Press ESC to stop");
            SerialPort port = new SerialPort("COM5", 115200);
            port.DataBits = 8;
            
            port.StopBits = StopBits.One;
            port.Handshake = Handshake.None;
            port.Parity = Parity.None;
            port.Open();
            port.Write("#Keyboard App Started#");
            do { 
                while (!Console.KeyAvailable) ;
                {
                    switch (Console.ReadKey(true).Key)
                    {

                        default:
                            Console.WriteLine("ERR!");
                            break;
                        case ConsoleKey.W:
                            Console.WriteLine("KeyPressed: W");
                            port.Write("1");
                            break;
                        case ConsoleKey.D:
                            Console.WriteLine("KeyPressed: D");
                            port.Write("D");
                            break;
                        case ConsoleKey.UpArrow:
                            Console.WriteLine("KeyPressed: up");
                            port.Write("3");
                            break;
                        case ConsoleKey.Escape:
                            port.Close();
                            Environment.Exit(0);
                            break;
                    }
                }
            }

            while (Console.ReadKey(true).Key != ConsoleKey.Escape);

            Process.GetCurrentProcess().WaitForExit();
        }
    }
}

I need to send a message when when i release any keyboard button. How can i do that?

20 Replies

med5801OP•2y ago

this code will run a submarine drone. It should go forward when I press the key and stop when I release the key. Thanks for your help

TheRanger•2y ago

you realize it will keep spamming writing "1" to the port if u keep holding W, right?

med5801OP•2y ago

yeah

TheRanger•2y ago

so if you stop holding the key, it wont write anymore does the submarine drone still go forward after u release the key?

med5801OP•2y ago

Actually "1" is running another function

TheRanger•2y ago

my point is, does it still run the function after u release the key?

med5801OP•2y ago

yes there is a second code

if(Serial.available()){
    a=(int)Serial.read();
    Serial.println(a);
    if(a==49){
            on=on+potValue;
            ESC1.write(on);
            
            Serial.println("ilerle = "+String(on));
      
              }

if(Serial.available()){
    a=(int)Serial.read();
    Serial.println(a);
    if(a==49){
            on=on+potValue;
            ESC1.write(on);
            
            Serial.println("ilerle = "+String(on));
      
              }

TheRanger•2y ago

well you might need to create an InputManager class

med5801OP•2y ago

okey i will try thanks

TheRanger•2y ago

i can help you how to do it

med5801OP•2y ago

it would be great is there any function to get release key input

TheRanger•2y ago

afaik for console, no you'd have to make one

med5801OP•2y ago

i need to google it

TheRanger•2y ago

when you press W for example you will store a data that W is being held

med5801OP•2y ago

okey after that?

TheRanger•2y ago

and when you release it, the input class will check what keys are currently pressed, and what keys last updated were currently pressed if you are not holding W but last time you updated, u were holding W then that indicates that u just released the key W

med5801OP•2y ago

oh i see i will try thanks for your help 👍

TheRanger•2y ago

@Med5801 just discovered its very hard to do on Console due to limitations u might need to use a keyboard hook instead https://stackoverflow.com/questions/52903672/wait-for-key-to-be-released

Stack Overflow

Wait for key to be released

In a simple test program that i made, you can increment a value with Console.ReadKey(). However, you can hold the button, and it will just keep increasing the value. I want my program to wait for t...

TheRanger•2y ago

and dont try to close the thread as someone might have an answer better than mine

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Need Help