how to program with Pole display / customer display?

Question

1.00/5 (3 votes)

See more:

I am using the below code to show the text in the pole display.But iam having one issue i.e how to display the message in different line (have 2 lines). I dont know how to set the cursor position.I really appreciate if any one help me.

Iam using RPD-200SU.Speicification are

Display method- VFD display

Number of character -20 columns x 2 lines

Character type-5 x 7 dot matrix

C#

private void button1_Click(object sender, EventArgs e)
        {

            SerialPort sp = new SerialPort();

            sp.PortName = "COM1";
            sp.BaudRate = 9600;
            sp.Parity = Parity.None;
            sp.DataBits = 8;
            sp.StopBits = StopBits.One;
            sp.Open();
            sp.WriteLine ("                                        ");
            sp.WriteLine("Hi welocme here");

            sp.Close();
            sp.Dispose();
            sp = null;

        }

Posted 24-Jul-12 8:38am

nsk_saravana

Updated 12-May-20 8:25am

Kenneth Haugland

v2

Add a Solution

Comments

Sergey Alexandrovich Kryukov 24-Jul-12 14:53pm

What cursor? Why do you think such kind of display can have cursor? Did you try just to output the line of more than 20 characters? Are they simply wrap to the second line?
--SA

3 solutions

Solution 1

You should talk to the people who created it - http://www.riopos.com/[^] - they should provide technical support and will know more about their product than we will. If they don't, then find another supplier and demand your money back!

Posted 24-Jul-12 8:49am

OriginalGriff

Solution 3

A lot of these pole displays use a standard controller (like the HD44780 chip) driven by a microprocessor and connected via a USART to the computer via a serial link or thru something like the FTDI chip for USB. The problem is that the control "language" the display understands is not standard... meaning even though the display controller wants to see a 20H on it's data lines (parallel by the way) doesn't mean the micro is looking for a hex 0x20 sent to it to blank the display and send the cursor 'home'. You aren't talking directly to the display controller but the micro that is driving the display controller.

Therefore there is also no guarantee what the command set will be or event that the micro will line-wrap what you send. Quite the opposite has been my experience... they will often just run the text off the display.

The key here is that the vendor should have a programming guide with the commands available... just as the first solution implied. You will find that there are control codes you need to send to the display to get it to do things. For example, there will be a "clear display" code which will clear it and put the cursor at 0,0. There will be a code to position the cursor... It typically takes a line number and a position where it will move the cursor to and subsequent printing will begin. You will also find there should be a control code to turn the cursor on or off and make it blink. You should be able to have total control over the display once you know all of this information.

Unfortunately the vendor will probably be the only place to get this information. Since they likely wrote the code for the micro that runs it (or purchased the code/controller) they should be able to give you the info. You might try looking for commands for other serial-based LCD and VFD displays. You might get lucky and find a compatible control set. These guys don't typically reinvent the wheel when they offer one of these things.

And if those guys don't give up the goods, find one that will. LCD/VFD pole displays are a dime a dozen... you should be able to find one more friendly to your cause.

Posted 3-Dec-12 9:31am

Jason Gleim

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Haris Custo · Accepted Answer · 2013-04-30T04:25:00

Instead of sending

C#

sp.WriteLine ("                                        ");
            sp.WriteLine("Hi welocme here");

try this

C#

sp.WriteLine("1st line"); 
sp.WriteLine((char)13 + "2nd line");

to clear display try

C#

sp.Write(Convert.ToString((char)12));

Almost all of them use similar command set, check this one from Bixolon for their bcd1000 Customer Display http://www.goodson.com.au/download/manual/samsung/user/bcd1000_Command_Manual.pdf[^]