Re: Communicate with USB dongle - C# Discussion Boards

6-Aug-12 1:38

i have an application,i will communicate with his application using USB donbgle,and user need to enter the COM port for the USB that is being used in the PC,how can i access and communicate with usb using c#

Thanks

Wes Aday6-Aug-12 1:51

6-Aug-12 1:51

vikki0286 wrote:
COM port

There is your answer... use the SerialPort class.

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012

vikki02866-Aug-12 2:16

6-Aug-12 2:16

Please would you explain how i can detect and communicate with USB using serial port class?

Thanks

Wes Aday6-Aug-12 2:27

6-Aug-12 2:27

Reading the documentation[^] is a real good place to start.

vikki02866-Aug-12 2:44

6-Aug-12 2:44

my requirement is i will connect a USB with my PC,USB connect with a base station and will get the Athletes hit details from the base station,then i will get the data from the USB and enter the return info by USB in my SQL database.

i read this code,it will simply open the specific port,
please can you explain more how i can check my port is connected with USB dongle or not.

if my port is connected with USB dongle then how i will communicate the USB?
what command i need to send to get data from the USB?
In what format i will get the data from the USB dongle.

Thanks alot.

Wes Aday6-Aug-12 3:02

6-Aug-12 3:02

vikki0286 wrote:
what command i need to send to get data from the USB

Out of the thousands of dongles that there are, how on earth would I know which one you are using? Read the documentation for the dongle. If you can't figure it out then ask the manufacturer. They have support people and supporting their product is what they are paid to do.

vikki02866-Aug-12 22:08

6-Aug-12 22:08

It looks like a standard Comm port: 115.2KB, N,8,1.

We have a specific wireless protocol which defines the communication packets across the port.
In general, however, the communication is ASCII encoded HEX ending in a CR/LF pair.

The general packet structure is:
Packet Structure (TBD bytes maximum)
ll pp dd dd dd ss ss ss nn bb bb ....... bb ir
|| || || || || || || || || || || ||
|| || || || || || || || || || || xx-- Transaction ID (i:Packet ID [0h-Fh]; r:Retry Count [0h-Fh])
|| || || || || || || || || || || (00 for PC-->USB part of PC-->USB-->Remote communication;
|| || || || || || || || || || || (not sent/used for PC-->USB or USB-->PC Only communication)
|| || || || || || || || || xx-xx-.......-xx----- Data Bytes [0-TBDd]
|| || || || || || || || xx---------------------- Command/Data (see Commands below)
|| || || || || xx xx xx------------------------- Source ID [000001h-FFFFFFh]
|| || xx xx xx---------------------------------- Destination ID [000001h-FFFFFFh, 000000h:broadcast]
|| xx------------------------------------------- Project ID [00h-FFh]
xx---------------------------------------------- Packet Length-1 [08h-FFh]

And, as an example, the packet received for an event burst is:

9A{*B0 or *B1} - Report ‘Event’ Burst
CD 00 dd dd dd ss ss ss 9A tt tt tt tt xx(0) yy(0) zz(0)..xx(63) yy(63) zz(63) ir
- tt tt tt tt: event time stamp (see Firmware Notes)
- xx(n) yy(n) zz(n): 2’s comp. 8-bit acceleration array data
- Response {9A} is sent each time an 'Event' is detected.
how can i do get and send data to com port using Serial port class.

Thanks

Richard Andrew x647-Aug-12 5:24

Richard Andrew x64

7-Aug-12 5:24

Nobody is going to write the code for you. Read the documentation.

The difficult we do right away...
...the impossible takes slightly longer.

vikki02868-Aug-12 3:25

How to connect with USB- Printer through C# .net without windows spooler?

8-Aug-12 3:25

yes i know no body can do for me.i just want to get idea.because i am doing work first time with com port.
i got the code to connect with Com Port,i can connect with COM PORT using Serials port class.
i would like to know one thing, how can i run the commands on the com port
to send and retrieve data.

Thanks

Vikas

Vikas borkar6-Aug-12 1:13

Vikas borkar

6-Aug-12 1:13

I want to access usb printer details using snmp. But i am not able to connect it through c#.net. How can i connect my c# app to usb printer?

Re: How to connect with USB- Printer through C# .net without windows spooler?

Wes Aday6-Aug-12 6:48

Re: How to connect with USB- Printer through C# .net without windows spooler?

6-Aug-12 6:48

You might try reading through this[^] and see if that helps.

Vikas borkar6-Aug-12 19:25

Vikas borkar

6-Aug-12 19:25

Thank You for giving me this link.
My dear i was gone through this. But i don't understand it. I am new in the .net technology.So it might take so much time to convert "English" lines into "coding" . I want some coding part so that i would understand and implement it.

C# and .Net, trying to select a list of classes from name of node in xml file

Perry Nordmann5-Aug-12 4:52

Perry Nordmann

5-Aug-12 4:52

Hi, i have a little bit of a problem using xml and mysql in c#. let me show you how this works:

This is how my program works,

this is a treeview that you select a node from

|--------------------|
| -FirstNode
|__+FirstChild
|__+SecondChild
|__+ThirdChild
| -SecondNode
|__+FirstChild
|__+SecondChild
|__+ThirdChild
|--------------------|

and in this datagridview it will show data from the database, based on what treeview node you select.

|-------------------------------|
|Year|Class|Open|Locked|
|-----|--------|------|---------|
|-----|--------|------|---------|
|-----|--------|------|---------|
|-----|--------|------|---------|
|-----|--------|------|---------|
|-----|--------|------|---------|
|-----|--------|------|---------|
|-------------------------------|

And the database is built like this:

there are databases (named after the two root nodes in the xml treeview),

FirstNode
SecondNode

Under these databases is the information i want into the datagridview.

and now to the problem, i can't select one of the child nodes without getting information from both of the nodes.

as in example, if i press the first node. everything in the database FirstNode is posted into the datagridview as i want, and that goes to the same for SecondNode. But when i press one of the child nodes i get the information from both of the cilds in both roots. is there a way to make them unique so i can get the correct information from only one of the child nodes? i can post code if that would help you.

Thanks, from Perry Wink | ;)

Re: C# and .Net, trying to select a list of classes from name of node in xml file

Ed Hill _5_5-Aug-12 22:16

Ed Hill _5_

5-Aug-12 22:16

i think a code sample will be required to help you here, specifically the code that loads the data to be shown when you select an item on the tree view.

Re: C# and .Net, trying to select a list of classes from name of node in xml file

Perry Nordmann6-Aug-12 3:27

Perry Nordmann

6-Aug-12 3:27

<blockquote class="FQ">
<div class="FQA">Quote:</div>
XElement doc = XElement.Load(Config.Default.LocXML + Config.Default.NameXML);
            foreach (XElement xmls in doc.Descendants("S"))
            {
                foreach (XElement xmly in xmls.Descendants("Y"))
                {
                    foreach (XElement xmlc in xmly.Descendants("C"))
                    {
                        if (treeView1.SelectedNode.Text == xmls.Attribute("name").Value)
                        {
                            DuHarValgt.Text = "Vennligst velg en klasse til venstre.";
                            ValgtKlasse.Text = "<---------------";
                            DenneEr.Text = "";
                            ÅpenEllerStengt.Text = "";
                            DuMåVente60SekunderFørDuKanÅpneStengeKlassen.Visible = false;
                            button1.Text = "Velg en Klasse";
                            button1.Enabled = false;
                            button1.BackColor = Config.Default.BTNone;

                            if (clear == true)
                            {
                                dataGridView1.Rows.Clear();
                                clear = false;
                            }

                            string Åpent = null;
                            string Låst = null;

                            MySqlCommand cm11 = new MySqlCommand("SELECT `Åpent` FROM " + Config.Default.MySQL_Schema + "." + xmls.Attribute("name").Value + " WHERE `Klasse`='" + xmlc.Attribute("name").Value + "'", cs);
                            using (MySqlDataReader reader11 = cm11.ExecuteReader())
                            { while (reader11.Read()) { if (reader11.GetString(0) == "1") { Åpent = reader11.GetString(0); } else if (reader11.GetString(0) == "0") { Åpent = reader11.GetString(0); } } }
                            if (Åpent == "1") { Åpent = "Ja"; } else { Åpent = "Nei"; }

                            MySqlCommand cm12 = new MySqlCommand("SELECT `Låst` FROM " + Config.Default.MySQL_Schema + "." + xmls.Attribute("name").Value + " WHERE `Klasse`='" + xmlc.Attribute("name").Value + "'", cs);
                            using (MySqlDataReader reader12 = cm12.ExecuteReader())
                            { while (reader12.Read()) { if (reader12.GetString(0) == "1") { Låst = reader12.GetString(0); } else if (reader12.GetString(0) == "0") { Låst = reader12.GetString(0); } } }
                            if (Låst == "1") { Låst = "Ja"; } else { Låst = "Nei"; }

                            dataGridView1.Rows.Add(xmly.Attribute("name").Value, xmlc.Attribute("name").Value, Åpent, Låst);
                        }
                        else if (treeView1.SelectedNode.Text == xmly.Attribute("name").Value)
                        {
                            DuHarValgt.Text = "Vennligst velg en klasse til venstre.";
                            ValgtKlasse.Text = "<---------------";
                            DenneEr.Text = "";
                            ÅpenEllerStengt.Text = "";
                            DuMåVente60SekunderFørDuKanÅpneStengeKlassen.Visible = false;
                            button1.Text = "Velg en Klasse";
                            button1.Enabled = false;
                            button1.BackColor = Config.Default.BTNone;

                            if (clear == true)
                            {
                                dataGridView1.Rows.Clear();
                                clear = false;
                            }

                            string Åpent = null;
                            string Låst = null;

                            MySqlCommand cm11 = new MySqlCommand("SELECT `Åpent` FROM " + Config.Default.MySQL_Schema + "." + xmls.Attribute("name").Value + " WHERE `Klasse`='" + xmlc.Attribute("name").Value + "'", cs);
                            using (MySqlDataReader reader11 = cm11.ExecuteReader())
                            { while (reader11.Read()) { if (reader11.GetString(0) == "1") { Åpent = reader11.GetString(0); } else if (reader11.GetString(0) == "0") { Åpent = reader11.GetString(0); } } }
                            if (Åpent == "1") { Åpent = "Ja"; } else { Åpent = "Nei"; }

                            MySqlCommand cm12 = new MySqlCommand("SELECT `Låst` FROM " + Config.Default.MySQL_Schema + "." + xmls.Attribute("name").Value + " WHERE `Klasse`='" + xmlc.Attribute("name").Value + "'", cs);
                            using (MySqlDataReader reader12 = cm12.ExecuteReader())
                            { while (reader12.Read()) { if (reader12.GetString(0) == "1") { Låst = reader12.GetString(0); } else if (reader12.GetString(0) == "0") { Låst = reader12.GetString(0); } } }
                            if (Låst == "1") { Låst = "Ja"; } else { Låst = "Nei"; }

                            dataGridView1.Rows.Add(xmly.Attribute("name").Value, xmlc.Attribute("name").Value, Åpent, Låst);
                        }
                        else if (treeView1.SelectedNode.Text == xmlc.Attribute("name").Value)
                        {
                            string Åpent = null;
                            string Låst = null;

                            DenneEr.Text = "Denne klassen er:";
                            MySqlCommand cm11 = new MySqlCommand("SELECT `Åpent` FROM " + Config.Default.MySQL_Schema + "." + xmls.Attribute("name").Value + " WHERE `Klasse`='" + xmlc.Attribute("name").Value + "'", cs);
                            using (MySqlDataReader reader11 = cm11.ExecuteReader())
                            { while (reader11.Read()) { if (reader11.GetString(0) == "1") { Åpent = reader11.GetString(0); } else if (reader11.GetString(0) == "0") { Åpent = reader11.GetString(0); } } }
                            if (Åpent == "1") 
                            {
                                ÅpenEllerStengt.Text = "Åpen";
                                button1.Text = "Steng klassen " + treeView1.SelectedNode.Text;
                                button1.Enabled = true;
                                button1.BackColor = Config.Default.BTOpen;
                            }
                            else if (Åpent == "0") 
                            {
                                ÅpenEllerStengt.Text = "Stengt";
                                button1.Text = "Åpne klassen " + treeView1.SelectedNode.Text;
                                button1.Enabled = true;
                                button1.BackColor = Config.Default.BTClosed;
                            }

                            MySqlCommand cm12 = new MySqlCommand("SELECT `Låst` FROM " + Config.Default.MySQL_Schema + "." + xmls.Attribute("name").Value + " WHERE `Klasse`='" + xmlc.Attribute("name").Value + "'", cs);
                            using (MySqlDataReader reader12 = cm12.ExecuteReader())
                            { while (reader12.Read()) { if (reader12.GetString(0) == "1") { Låst = reader12.GetString(0); } else if (reader12.GetString(0) == "0") { Låst = reader12.GetString(0); } } }
                            if (Låst == "1") 
                            { 
                                Låst = "Ja";
                                DuMåVente60SekunderFørDuKanÅpneStengeKlassen.Visible = true;
                                DuMåVente60SekunderFørDuKanÅpneStengeKlassen.Text = "Du må vente ca " + Config.Default.TimerButton + " sekunder før du kan åpne eller stenge klassen.";
                                button1.Text = "Klassen " + treeView1.SelectedNode.Text + " er låst";
                                button1.Enabled = false;
                                button1.BackColor = Config.Default.BTWait;
                            } 
                            else 
                            {
                                Låst = "Nei";
                                DuMåVente60SekunderFørDuKanÅpneStengeKlassen.Visible = false;
                            }

                            DuHarValgt.Text = "Du har valgt klassen:";
                            ValgtKlasse.Text = treeView1.SelectedNode.Text;
                        }
                    }
                }
            }
</blockquote>

Here is the code from my treeview afterselect, thanks Wink | ;)

Perry ^_^

C# Developer looking for a new project

Liam Cairns Kelly4-Aug-12 15:39

4-Aug-12 15:39

I don't know if this is in the right place or not, but I'm going to assume it is and I apologise if it isn't! :P

I've been developing in C# for a year now and it's my first major language and I'm now looking to join a small project to help build my skills, or to even start one up if you have an idea! Smile | :)

My strongest points are Analysis, Implementation and stuff in that general area. I also work considerably well in a team. Although, my weakness would have to be design, as I haven't really gotten very far with it. But I do have basic/possibly intermediate skills in HTML and CSS. My problem is designing in environments like this.

I know things such as basic I/O functions, operation of WMP/iTunes through DLL referencing, xml parsing, class builds, open source libraries, creating automatic update functions (the one in VS is rather crumby, if you ask me!) threading and much more.

So if you're looking for people to help out in your project, even just little, and you're interested in letting me join reply here or send me a message. And if you've read all of this then I both thank and salute you! Big Grin | :-D

modified 4-Aug-12 21:46pm.

Wes Aday4-Aug-12 15:43

4-Aug-12 15:43

You might want to at least edit your posting and remove your email address. Unless you like the spammers scraping your email and then sending you lots of nice emails for problems you didn't know you had.

Liam Cairns Kelly4-Aug-12 15:45

4-Aug-12 15:45

Aha yeah you're probably right! I get so much spam mail its unreal. This is probably why I get it all. Thanks for pointing that out. Smile | :)

Wes Aday4-Aug-12 15:50

4-Aug-12 15:50

You're welcome. And you message probably rightfully belongs in the collaboration forum.

Liam Cairns Kelly4-Aug-12 15:51

4-Aug-12 15:51

Yeah. I'm new to the website and don't really know much about the forum contents or navigation. My bad. Frown | :(

Wes Aday4-Aug-12 15:53

4-Aug-12 15:53

Not a problem. Happens all the time.

Mycroft Holmes4-Aug-12 17:47

Mycroft Holmes

4-Aug-12 17:47

I find getting the idea for a project to learn/play on to be the most difficult thing, therefore the few I have I hoard Blush | :O

You could always peruse the codeplex stuff and see if you can join there. I have never used it but I believe it is open source and it seems reasonable that other devs would be welcome on some of the projects, especially if they are not too specialised.

Never underestimate the power of human stupidity
RAH

Liam Cairns Kelly5-Aug-12 5:13