How to make a terminal program (similar to windows hyper-terminal but more powerful)?

I am a new Labview user, Im trying to write a monitor program for use with uControllers. The main problem I cant seem to get over is to have a section of the screen where I can type in commands (that are sent only once!) then recieve a reponse from the uController directly under the command. Has anyone tried this?
I am using the VISA read/write functions for serial communications, are these interrupt driven?, does anyone have ideas on this.
Thanks in advance
Dave Zdanowicz

Hi,
Doesn't your device maybe have an "echo"? Than, I guess, the easiest
way would be to have two independently running VIs, one of which is
repeatively checking the serial interace for incoming bytes and
eventually displaying them in an apropriate indicator (e.g. a string
indicator where all incoming new characters are appended to the old
string via a shift register of a loop). The other VI then could be
responsible for sending commands.
It did something similar just resently. It works quite well. The
command sending VI had some buttons to send kind of macros (several
commands, often needed in combination, bundled together) and
furthermore checked the keyboard with the keyboard VIs from the NI
pages for additional inputs from the user, which were then just sen
t
to the serial interface byte by byte.
Regards
Arno
On Tue, 17 Apr 2001 16:20:10 -0700 (PDT), Dave Z wrote:
>I am a new Labview user, Im trying to write a monitor program for use
>with uControllers. The main problem I cant seem to get over is to have
>a section of the screen where I can type in commands (that are sent
>only once!) then recieve a reponse from the uController directly under
>the command. Has anyone tried this?
>I am using the VISA read/write functions for serial communications,
>are these interrupt driven?, does anyone have ideas on this.
>Thanks in advance
>Dave Zdanowicz

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How to make a Java program that recognises a function of two variables...

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First I will give an example and then do the question.
Ex1.
We have any function, eg.y = x ^ 2 + 1 (read 'y' equals 'x' high to the square), a function of the second degree.
To build the graph of this function attach values to 'x' to find the values of 'y'
And thus mount the pair ordered (x, y) which represents a point on the Cartesian plane.
Assigning values to 'x' 'we can build up a table that gives us the pairs ordered:
We can use any numbers, but arfer interval [-3.3]
X | y = x ^ 2 + 1
-3 | Y = (-3) ^ 2 +1 = 10
-2 | Y = (-2) ^ 2 +1 = 5
-1 | Y = (-1) ^ 2 +1 = 2
0 | y = (0) ^ 2 +1 = 1
1 | y = (1) ^ 2 +1 = 2
2 | y = (2) ^ 2 +1 = 5
3 | y = (3) ^ 2 +1 = 10
We then ordered the pairs:
(-3.10), (-2.5); (-1.2), (0,1), (1,2), (2,5), (3,10)
Tabem that can be represented by a table:
X | y
-3 | Y = 10
-2 | Y = 5
-1 | Y = 2
0 | y = 1
1 | y = 2
2 | y = 5
3 | y = 10
Now I begin to explain my doubts.
See this program:
Ex2
* To change this template, choose Tools | Templates
* And open the template in the editor.
Encontrando_o_valor_de_y package;
* @ Author des Soldat Gottes
Import javax.swing.JOptionPane;
Public class (Main
* @ Param args the command line arguments
Public static void main (String [] args) (
Int x, y;
String x1;
X1 = JOptionPane.showInputDialog ( "We have the function y = x + 1 \ n" +
"Assign a value for 'x',"); / / receives a value for the function y = x + 1
X = Integer.parseInt (x1); / / tranforma String in int
Y = x + 1; / / receives the value of 'x' and calculates' y '
JOptionPane.showMessageDialog (null, "The value of 'y' is: \ t \ t" + y);
/ / Displays the value of 'y'
System.exit (0);
We see that the program receives above a value for 'x' and replaces the function contained in the program, y = x + 1, and so is the value of the variable 'y'.
In: x1 = JOptionPane.showInputDialog ( "We have the function y = x + 1 \ n" +
"Assign a value for 'x',");
The entry is a number and that number is assigned aa ja existing function in the (y = x + 1).
The question is: would it be possible to come to a function?
Ex: the program ask: DIGITE THE FUNCTION?
The USUARIO DIGITARIA A FUNCTION ANY, TYPE: y = x ^ 2 +1
The program would recognize the function and give numerical values to that function as Ex1, at the beginning of this text.
And then to find the values of the x and y launch a table.
It would be possible that?
By invez of entering with a number so that the program sustitua a function ja existing as Ex2, seen above, entering with a function quaquer (type: y = x ^ 2 +1) for the program atribuisse values to that function and then create a table of values as Ex1.
I hope it has been easier to understand my doubts now.
Thank you for your attention!
God bless!

rafaelmenezes wrote:
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But as it applied to a program?
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jschell wrote:
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</pre>
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Hi,
Doesn't your device maybe have an "echo"? Than, I guess, the easiest
way would be to have two independently running VIs, one of which is
repeatively checking the serial interace for incoming bytes and
eventually displaying them in an apropriate indicator (e.g. a string
indicator where all incoming new characters are appended to the old
string via a shift register of a loop). The other VI then could be
responsible for sending commands.
It did something similar just resently. It works quite well. The
command sending VI had some buttons to send kind of macros (several
commands, often needed in combination, bundled together) and
furthermore checked the keyboard with the keyboard VIs from the NI
pages for additional inputs from the user, which were then just sen
t
to the serial interface byte by byte.
Regards
Arno
On Tue, 17 Apr 2001 16:20:10 -0700 (PDT), Dave Z wrote:
>I am a new Labview user, Im trying to write a monitor program for use
>with uControllers. The main problem I cant seem to get over is to have
>a section of the screen where I can type in commands (that are sent
>only once!) then recieve a reponse from the uController directly under
>the command. Has anyone tried this?
>I am using the VISA read/write functions for serial communications,
>are these interrupt driven?, does anyone have ideas on this.
>Thanks in advance
>Dave Zdanowicz

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