How to make a terminal multiplexer in Python
How does a terminal multiplexer work? Like screen, tmux, dvtm, and dtach.
Is it possible to write one in Python?
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
Similar Messages
-
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 ZdanowiczHi,
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 -
How can i make mt own radio station on iPad or iPhone.....and how to use mobile terminal ???
How can i make mt own radio station on iPad or iPhone.....and how to use mobile terminal ???
what do you mean radio station as in you would be transmitting fm to the airwaves?
-
Hey all users
I am using this mac book air OSX10.8.5.
i NEED TO ASK THAT HOW TO MAKE OUR FOLDER HIDDEN IN THIS , WITHOUTING PUTTING ANY COMMAND IN TERMINAL CONSOLE.
PLS SUGGEST . WHAT IS THE PROCEDURE IF ANYBODY KNOW ABOUT THIS .First don't write in all caps, that's tantamount to shouting and hurts our eyes. You can't. Using the Terminal app is simple and detailed in https://discussions.apple.com/message/16507198#16507198
-
How to make a slide show or edition including mpeg and other formats
Hi,
I am i bit puzzled by the use of iphoto/imovie/itunes.
I have a Sony camera which generates jpg photos and mpg videos; besides, i have 3gp and mp4 videos from cell phones.
Firstly, i imported all of them to iphoto. I used a automator workflow to help importing from hotsynced Palm centro files, to discover the first problem with the 3gp files: they could not be iported by workflows.
Still, they could be seen in iphoto, but then i tried to make a slide show. My idea was to put the photos and videos of a certain event to be watched together, or at least to be able to watch the videos in a sequence, without having to click on each one.
I didnt get it in iphoto, so i switched to imovie. it was even worse, since it cannot import the mpgs and the 3gps (the jpg photos were ok). What could i do about that? is there any converter or other way?
then i tried the itunes, and it was the opposite: it imported and played in sequence the mpg videos, but not the photos. This is a workaround anyway, since the program expects to play movies, and makes my daughter a "star", but that`s ok, she is one to me.
i'll be thankful for hints on how to make the imovie compatible with the 3gp and mpgs, or finding some way to do this edition in iphoto or even with itunes.
regardsI see, it sounds reasonable , i think i will buy the pro and try.
QT Pro ($30) and MPEG Streamclip (free) complement each other. In many cases one can do things that the other cannot. For instance, MPEG Stramclip can handle/edit multiplexed formats while QT Pro cannot. QT Pro allows layering of data tracks while Streamclip does not. Streamclip merges file streams more easily than QT Pro but QT Pro allows the "Movie to MPEG-4" export to "passthrough" the video while Streamsclip does not. And so on and so forth...
I was referring to the mpegs from the Sony camera, of which a have hundreds, shot in the last 3 or 4 years, mainly from my 5-year old daughter. Is the above true to these?
That still doesn't help. By "sony camera," are you referring to a still digital camera (multiplexed MPEG-1) or a Sony video camcorder taking MPEG-4/AVCHD with AC3 audio in an MPEG wrapper, a Sony DVD/HDD camera storing some kind of MPEG-2/AC3 files. On a Mac, the extension MPG normally refers multiplexed MPEG-1 (or MPEG-1 audio layer) files while MPEG normally refers to multiplexed MPEG-2 video content with MPEG-1, layer 2 audio (MPEG2/MP2) but may also refer to files with MP3 or AC3 files in an MPEG, VOB, or TS wrapper. In addition it may loosely refer to elementary M2V video streams (M2V video file paired with a separate AIFF or AC3 file), a standard MPEG4/AAC file (in an MOV or MP4 wrapper) or a standard H.264/AAC file in MOV, MP4, or M4V wrapper). Since the handling, conversion, editing requirements vary with each type of file, it becomes important to what specific kind of content/file container we are dealing with here. -
How to make a RESET button in labview ?
how to make a RESET button in labview which resets all the elements in an array back to inactive element. Rather than deleting values in every column of array its better to create a RESET button ... how to make it ???
abhinavb wrote:
how to make a RESET button in labview which resets all the elements in an array back to inactive element. Rather than deleting values in every column of array its better to create a RESET button ... how to make it ???
You seem to have some misconceptions.
Is the array a control or an indicator or just some data held in a shift register or feedback node?
What you are probably looking for is an empty array. An empty array has a size of zero and has no elements (active or inactive). From your mentioning of "rows", you seem to have a 2D array.
The size of the array is independent of the visible size of the container.
Clearing an array means simply writing an empty array of the same datatype to it's terminal (or internal data structure). If the array is a control, you need to write to a local variable of it instead.
Can you show us some code so we can have a better understanding what exactly you mean by "array" in this context? Thanks!
LabVIEW Champion . Do more with less code and in less time . -
How to make a button to stop and run a for loop?
How to make a button to stop and run a for loop? and if it is stopped it shall start from where i t stopped.
Your VI has some very fundamental flaws.
The start/stop button is outside the FOR loop, thus it will NOT get read during execution of the FOR loop, but only before the FOR loop starts. Think dataflow!
Thus the terminal of the start/stop button belongs inside the FOR loop.
Your FOR loop iterates 20x, which probably takes about a nanosecond. You will NOT be fast enough to reliably press the start/stop button during a specific iteration of the FOR loop.
Your code does not "stop and run" a FOR loop (sic). The loop always spins, but executes an empty case when "Stopped". I guess that's what you actually want?
Once you solve (2), the x indicator will contain a random value whenever you "stop".
As soon as the 20 iterations complete, the outer while loop spin an things start over, another nanosecond later.
Place e.g. a 500ms wait inside the FOR loop to solve this.
Don't place terminals of indicators on top of formula nodes.
Your formula does not produce any output, so really has no purpose.
Use a real "stop" button to terminate the while loop (mechanical action: latch when released). Right now you are using a plain switch, which does not reset to false before the next run. This means that you need to manually reset it before running the program again.
It is oftern useful to operate the VI in execution highlighting mode. You will immediately see that your button does not get read during execution of the FOR loop. Try it!
LabVIEW Champion . Do more with less code and in less time . -
How to make modifier keys lockable? (like Caps Lock for Ctrl or Alt)
Playing around with the non-modal text editor ne, I found myself wondering if one could simulate a modal interface (like vim has) by having something like "Ctrl Lock" or "Alt Lock" (analogous to Caps Lock) and thus a "ctrl mode"/"alt mode". I would like to try this, but I am not sure how to make it happen.
My best guess is that this could be accomplished via XKB, but its documentation looks pretty intimidating. Is anyone here proficient in XKB and could point me in the right direction?
Other ideas:
– Is this something that a terminal emulator could do? Is there already one that can do it?
– Or a shell?
– For console applications, would it be possible to have a small wrapper that did nothing but intercept keyboard input and just pass everything through to the wrapped process, except that it would take into account the desired lockable modifier key? (I am thinking of tput here, but from my first search it appears that it doesn't do this sort of thing.)@Trilby: Thank you for the elaborate input!
@drcouzelis: "sticky keys" normally means that modifiers remain active only until the next keypress, while I want a way to lock them in active state for an arbitrary number of keypresses. But still, "sticky keys" was a worthwile input for the search engine.
The program xkbset, which can be used to set XKB options on the fly, has a function that comes very close to what I desire:
$ xkbset h
Usage: To set or unset various options:
xkbset <options>
where <options> may be all or any of (the '-' switches the feature off,
otherwise it is switched on):
To switch sticky keys on or off, and optionally set or reset:
() two keys pressed at the same time stops sticky keys;
() a modifier pressed twice will be locked:
[-]{sticky|st} [[-]twokey|[-]latchlock]...
I cannot select specific modiers to be affected with xkbset, but that would be fine with me. Sadly, it didn't completely work for me:
– It doesn't affect Alt at all for me.
– The effect seems to go away as soon as I change the window. (Maybe I need to invoke xkbset from .xinitrc for its effects to persist throughout the session? I will try that.)
So I went on and tried to configure XKB manually. I got up to a certain point without studying the documentation in-depth, but now I have landed on an error message that seems to suggest to me that I would have to get to a better understanding about the layout files before I could understand it. Here is what I did:
1. Got my current XKB configuration:
xkbcomp :0 output.xkb
2. Editet output.xkb to include the following at the end of the xkb_compatibility section:
//Hoping this makes the ^-key into a Ctrl-Lock key:
interpret TLDE {
action= LockMods(modifiers=Control);
3. Then I recompiled the configuration back into the running X server:
$ xkbcomp out.xkb :0
Warning: Compat map for group 2 redefined
Using new definition
Warning: Compat map for group 3 redefined
Using new definition
Warning: Compat map for group 4 redefined
Using new definition
Error: Couldn't lookup keysym
Symbol interpretation ignored
Warning: No symbols defined for <AB11> (keycode 97)
Warning: No symbols defined for <JPCM> (keycode 103)
Warning: No symbols defined for <I120> (keycode 120)
Warning: No symbols defined for <AE13> (keycode 132)
Warning: No symbols defined for <I149> (keycode 149)
Warning: No symbols defined for <I154> (keycode 154)
Warning: No symbols defined for <I168> (keycode 168)
Warning: No symbols defined for <I178> (keycode 178)
Warning: No symbols defined for <I183> (keycode 183)
Warning: No symbols defined for <I184> (keycode 184)
Warning: No symbols defined for <FK19> (keycode 197)
Warning: No symbols defined for <FK24> (keycode 202)
Warning: No symbols defined for <I217> (keycode 217)
Warning: No symbols defined for <I219> (keycode 219)
Warning: No symbols defined for <I221> (keycode 221)
Warning: No symbols defined for <I222> (keycode 222)
Warning: No symbols defined for <I230> (keycode 230)
Warning: No symbols defined for <I247> (keycode 247)
Warning: No symbols defined for <I248> (keycode 248)
Warning: No symbols defined for <I249> (keycode 249)
Warning: No symbols defined for <I250> (keycode 250)
Warning: No symbols defined for <I251> (keycode 251)
Warning: No symbols defined for <I252> (keycode 252)
Warning: No symbols defined for <I253> (keycode 253)
The "Error" part is where I am currently stuck. It tells me that my changes were ignored (I no that it's about them because it goes away when I comment them out), but I don't yet understand why. -
HT1338 how to make space on startup drive?
how to make space on start up drive?
Use http://monolingual.sourceforge.net/ to remove unwanted languages - DO NOT remove anything else with it.
Install http://links.zero.eu.org/os-x/period/ to clear out very old log files etc
Paste the following into open Terminal (in Utilities) window and then hit return - give password when asked and hit return again - takes a while but it will list your 100 largest files:
cd / ; sudo du -caxk .[!.]* *| sort -rn | head -100
Keep backups on an external drive.
Put photos on DVDs and not your Mac. -
How to make iMovie 09 recognize a mounted disk image?
I'm trying to store video clips in a disk image (Mac OS Extended - Journaled, single Apple Partition Map). Previously in iMovie 08 all I had to do was mount the image, start iMovie and it would recognize it as an additional drive. Then I could drag events to it and store them there. In 09 this does not work. It sees the image but has the yellow triangle/exclamation point in it. I cannot for the life of me figure out how to make it recognize the image! I've tried all variations in disk utility to create the image to no avail. Is iMovie 09 looking for a certain file on the disk image to recognize it? Maybe something in the DS_Store file or the .localized? Very frustrating.
Hoping someone can help. Thanks.jsd2 wrote:
Try the following:
Mount the disk image so that there is a disk icon on the Desktop, and then launch Terminal (in /Applications/Utilities). Copy-paste the following line into the Terminal window, and then type a single space. Do not type <Return> yet:
sudo mdutil -i on
After typing the single space, drag the mounted disk image icon from the Desktop into the Terminal window, click inside the Terminal window, and then type <Return>. Enter your admin password at the prompt (it will not echo on the screen), and again type <Return>.
Hopefully that will enable Spotlght indexing on the mounted image. It might take some time to complete depending on the contents.
The result for this for me, three times, was "Indexing disabled." -
How to make connection to ORACLE 7.1.6
Hi,
May I have suggestions on how to make connection to ORACLE 7.1.6 on UNIX box?
Thank you very much for help!
JaneOracle 7.1.6 hasn't been supported by Oracle in many years. I don't believe that any Oracle product is currently certified to connect to a 7.1.6 database.
You really need to consider upgrading your database. At least if you went to the 7.3.4 patchset, you'd have a fighting chance. This was the terminal Oracle7 patchset, so most products were still certified against it 12-18 months ago. If you're lucky, they'll still work, though they won't be certified.
If you need a certified combination, you'll have to upgrade to 8i or 9i.
Justin -
How to make appear all controls?
in examples, some controls appears
how to make these control appear in a new project?
i'm looking for data i/o controls
thanksNot sure what the problem is...if you see a control in one of the examples that you want in another VI just copy and paste. If you want to make a front panel template just create a VI template (option in the new...dialog) and paste and arrange the controls on the front panel of that...
If there is code in the example that hides the control and you wonder how to make it appear again just go to the diagram, locate the terminal of the control, right-click on it and select show...
If the problem is how to make all controls on a panel appear (if e.g. there are 100 controls hidden and you want to un-hide them all)...open a reference to the front panel of the VI, get a reference to all the controls using the get control refs property and then wire the array of references
to an auto-indexed for-loop where you wire the references to a "visible" property and set the property to true...run it and all the controls will reappear.
MTO -
How to make CSD call in NOKIA E71
Hello,
I bought two Nokia E71 mobiles with BSNL 3G connection. My service provider(BSNL) providing 3G service. E71 is connected to PC there i dialed to another phone which is conneted to other PC. when i dialed from hyperterminal in winxp by using ATD commnad with out semicolon. I am getting connection error messge on my phone. NO CARRIER on hyper terminal.
I don't know what the problem is i tried with all commands no use. Is there any setting required for NOKIA E71. How to make data call (CSD call) by using Nokia E71.
You help is very much appreciated..
-VijenderHi
this may or may not be of help.
I was having a similar problem with a 6230i.
When trying to make a data call the No Carrier signal would come back.
After some research I changed +cbst form 0,0,1 to 7,0,1
at+cbst=7
This apparently gives the receiving modem more time to connect. It sends the no carrier signal 30 seconds later after appearing to connect, I still dont get the connect 9600 response. -
I recently broke my 2008 macbook. i was able to use an external hardrive to back up my data onto My Passport. I was going to buy a new computer but a friend told me sher had an older version of the iMac. (not sure how old but it doesnt have a camera if that helps) i was able to hook it up and turn it on but i ran into a few problems. 1) the "authentic" user or whatever it says is someone who previously used the computer. i added me as a user but im not sure how to make me the main user. 2) after hooking up My Passport, i was able to drag my files and copy them to the desktop.(i think i did it correctly) now, i dont know how to make my hard drive and applications and iformation the "main " info. The current apps on the iMac are super old versions of iTunes and iPhoto and such. 3) while trying to open the apps from my macbook on the iMac, it said it didnt have the right software to open these apps.
I am so computer illiterate so someone please help!!! Also, i do not have internet in my new apartment yet so if there is a way to make this happen without using the internet that would be preferred. sorry for the horrible spelling and poorly written paragraph.
THANK YOU!!You are not going to be able to run your old system from the backup on this old computer as the hardware is incompatible.
You need to get a new computer or a refurbished one. -
Hi my name is vishal
For past 10 days i have been breaking my head on how to make column headers in table appear bold while datas in table appear regular from c# windows forms with sql server2008 using iTextSharp.
Given below is my code in c# on how i export datas from different tables in sql server to PDF report using iTextSharp:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.Diagnostics;
using System.IO;
namespace DRRS_CSharp
public partial class frmPDF : Form
public frmPDF()
InitializeComponent();
private void button1_Click(object sender, EventArgs e)
Document doc = new Document(PageSize.A4.Rotate());
var writer = PdfWriter.GetInstance(doc, new FileStream("AssignedDialyzer.pdf", FileMode.Create));
doc.SetMargins(50, 50, 50, 50);
doc.SetPageSize(new iTextSharp.text.Rectangle(iTextSharp.text.PageSize.LETTER.Width, iTextSharp.text.PageSize.LETTER.Height));
doc.Open();
PdfPTable table = new PdfPTable(6);
table.TotalWidth =530f;
table.LockedWidth = true;
PdfPCell cell = new PdfPCell(new Phrase("Institute/Hospital:AIIMS,NEW DELHI", FontFactory.GetFont("Arial", 14, iTextSharp.text.Font.BOLD, BaseColor.BLACK)));
cell.Colspan = 6;
cell.HorizontalAlignment = 0;
table.AddCell(cell);
Paragraph para=new Paragraph("DCS Clinical Record-Assigned Dialyzer",FontFactory.GetFont("Arial",16,iTextSharp.text.Font.BOLD,BaseColor.BLACK));
para.Alignment = Element.ALIGN_CENTER;
iTextSharp.text.Image png = iTextSharp.text.Image.GetInstance("logo5.png");
png.ScaleToFit(105f, 105f);
png.Alignment = Element.ALIGN_RIGHT;
SqlConnection conn = new SqlConnection("Data Source=NPD-4\\SQLEXPRESS;Initial Catalog=DRRS;Integrated Security=true");
SqlCommand cmd = new SqlCommand("Select d.dialyserID,r.errorCode,r.dialysis_date,pn.patient_first_name,pn.patient_last_name,d.manufacturer,d.dialyzer_size,r.start_date,r.end_date,d.packed_volume,r.bundle_vol,r.disinfectant,t.Technician_first_name,t.Technician_last_name from dialyser d,patient_name pn,reprocessor r,Techniciandetail t where pn.patient_id=d.patient_id and r.dialyzer_id=d.dialyserID and t.technician_id=r.technician_id and d.deleted_status=0 and d.closed_status=0 and pn.status=1 and r.errorCode<106 and r.reprocessor_id in (Select max(reprocessor_id) from reprocessor where dialyzer_id=d.dialyserID) order by pn.patient_first_name,pn.patient_last_name", conn);
conn.Open();
SqlDataReader dr;
dr = cmd.ExecuteReader();
table.AddCell("Reprocessing Date");
table.AddCell("Patient Name");
table.AddCell("Dialyzer(Manufacturer,Size)");
table.AddCell("No.of Reuse");
table.AddCell("Verification");
table.AddCell("DialyzerID");
while (dr.Read())
table.AddCell(dr[2].ToString());
table.AddCell(dr[3].ToString() +"_"+ dr[4].ToString());
table.AddCell(dr[5].ToString() + "-" + dr[6].ToString());
table.AddCell("@count".ToString());
table.AddCell(dr[12].ToString() + "-" + dr[13].ToString());
table.AddCell(dr[0].ToString());
dr.Close();
table.SpacingBefore = 15f;
doc.Add(para);
doc.Add(png);
doc.Add(table);
doc.Close();
System.Diagnostics.Process.Start("AssignedDialyzer.pdf");
if (MessageBox.Show("Do you want to save changes to AssignedDialyzer.pdf before closing?", "DRRS", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Exclamation) == DialogResult.Yes)
var writer2 = PdfWriter.GetInstance(doc, new FileStream("AssignedDialyzer.pdf", FileMode.Create));
else if (MessageBox.Show("Do you want to save changes to AssignedDialyzer.pdf before closing?", "DRRS", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Exclamation) == DialogResult.No)
this.Close();
The above code executes well with no problem at all!
As you can see the file to which i create and save and open my pdf report is
AssignedDialyzer.pdf.
The column headers of table in pdf report from c# windows forms using iTextSharp are
"Reprocessing Date","Patient Name","Dialyzer(Manufacturer,Size)","No.of Reuse","Verification" and
"DialyzerID".
However the problem i am facing is after execution and opening of document is my
column headers in table in pdf report from
c# and datas in it all appear in bold.
I have browsed through net regarding to solve this problem but with no success.
What i want is my pdf report from c# should be similar to following format which i was able to accomplish in vb6,adodb with MS access using iTextSharp.:
Given below is report which i have achieved from vb6,adodb with MS access using iTextSharp
I know that there has to be another way to solve my problem.I have browsed many articles in net regarding exporting sql datas to above format but with no success!
Is there is any another way to solve to my problem on exporting sql datas from c# windows forms using iTextSharp to above format given in the picture/image above?!
If so Then Can anyone tell me what modifications must i do in my c# code given above so that my pdf report from c# windows forms using iTextSharp will look similar to image/picture(pdf report) which i was able to accomplish from
vb6,adodb with ms access using iTextSharp?
I have approached Sound Forge.Net for help but with no success.
I hope anyone/someone truly understands what i am trying to ask!
I know i have to do lot of modifications in my c# code to achieve this level of perfection but i dont know how to do it.
Can anyone help me please! Any help/guidance in solving this problem would be greatly appreciated.
I hope i get a reply in terms of solving this problem.
vishalHi,
About iTextSharp component issue , I think this case is off-topic in here.
I suggest you consulting to compenent provider.
http://sourceforge.net/projects/itextsharp/
Regards,
Marvin
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