General :: Minicom Offline But Uart Registers Working?
Jul 14, 2011
I am trying to access an OpenBSD system that I have just installed via my PcBSD system by the use of a serial cable. I have been trying both minicom and cu but I am obviously doing something wrong... cu -l /dev/cuad0 returns /var/spool/lock/LCK...cuad0 Permission Denied. Can't Open lock file. all ports busy. And when I try to connect through minicom I either get a similar lock error, or minicom will sit at the connection screen with (offline status). I feel like the answer to my problems is a rather simple one, but I do not know where else to look for information.
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Oct 1, 2010
I am using a Prolific pl2303 USB<=>Serial adapter. dmesg reports everything seems ok when I plug it in (see below) but when I open the ttyUSB0 port in minicom, it is always offline and nothing works. Also, minicom reports:
[code]....
If I plug the adapter into a different machine (Windows) everything works fine. The serial port is setup correctly (9600-8-N-1) What can I do to get this working?
usb 5-2: new full speed USB device using uhci_hcd and address 3
usb 5-2: configuration #1 chosen from 1 choice
pl2303 5-2:1.0: pl2303 converter detected
usb 5-2: pl2303 converter now attached to ttyUSB0
usb 5-2: New USB device found, idVendor=067b, idProduct=2303
[Code]....
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Jan 5, 2011
Minicom was running fine two days ago capturing data from a gage device via a serial cable. Yesterday, users of the data started complaining that they were not receiving any data.
The minicom status line reads offline. Is this part of the problem or is this normal (I never really noticed it before.) All settings on the gage device match the minicom settings.
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Apr 19, 2010
This has got me stumped to the point where I have spent 5 days with little sleep trying to find what I did wrong. It should be simple yet it doesn't work. All I want to do is create a test /dev/fred device driver that will allow me to test my hardware, all I want to do is transmit some bytes out PSC5. It *should* be a simple matter:
1) Make sure PSC5's PADs are configured for Function 0, DS of 1
2) Make sure SCCR1 has PSC4, 5, and 6 ENABLED
3) Configure the PSC's registers for UART mode, transmit/receive enable, all that happy stuff.
4) Have an open, close, read, write, ioctl function
What happens is that everything hangs together just fine, when I open(/dev/fred) my open_iproc_psc6_uart2() gets called and everything gets configured -- I request memory, remap it, release memory as needed. When write(/dev/fred) is called, my driver's ech_write() is called and when read(/dev/fred) is called, my ech_read() driver function gets called -- great stuff, it should be *easy*.
The problem is, I get nothing out the transmit pin of the PSC. if I missed a configuration register some where? A clock I need to set? I'll have to sleep on this and maybe inpiration will come but this is such a simple thing I'm trying to do, it should work. In fact I compare my code against three examples on the Internet and it looks functionally the same. Code with debugging / un-needed stuff added to try to figure out whyt nothing comes out the serial transmit pin:
// ----------------------------------------------------------------------
// This is a device driver that creates /dev/fred and is used to send
// and receive serial data on PSC6. It's just a test driver, something
[code]....
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Mar 28, 2010
I have tried to learn how 64bit asm (nasm in my case) works and found, among the many disparate pieces of info on the net, a few vague inferences that floating point registers can be used for other purposes than what they are intended for, example: "64-bit Linux allows up to fourteen parameters to be transferred in registers (6 integer and 8 floating point)." This would be fantastic for string operations/manipulation (I have never used asm for floating-point operations), can anyone shed a bit of light?
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Sep 9, 2011
I need to set the CR4.MCE bit for all the cores on my system (4). I'd like to write a linux kernel module for that, but I am not sure how to proceed: How do you sequentially access all of the CR4 registers? I have read the Intel manuals and they describe a way to initialize each core, but this is done in the bios.
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Jun 16, 2010
I will try to write correctly but be indulgent... so as describe in the title I have a CPU ARM and I want to access a register. i tried with mmap but it doesn't work. i attach my program if someone see the problem... so when I run the program there isn't any error, all works (open, mmap ...) but I know that my program do nothing because i have ask to read something that i know and there is nothing...
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Oct 14, 2010
I am developing a GPS driver which is connected over a high speed UART. The driver of the high speed UART is available and it creates a device node /dev/ttyHS0. Now using the device node, I guess, I will be able to read/write from/to the GPS chip from user space but my aim is to write a GPS driver in the kernel space which would communicate with the high speed UART driver. After some initial study, I think I can either write a line discipline driver or a serio to communicate with the GPS chip firmware through high speed UART driver.
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Oct 19, 2010
Initially i wrongly entered the serial port device as ttys0 and save it. It wont reply due to wrong device selection. Actual device is ttyS0 and i select this and try to save it as dfl,but an message appear as 'cannot write to /etc/minicom/minirc.dfl'
So i have to configure each and every time i open the minicom. how to configure this correctly?
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Mar 30, 2010
I have setup CentOS as server and Fedora as Client.Now I want to transfer file from server to client through minicom.How to do that?I tried sending file from CentOs and it does have a ASCII format file transfer option while on the other OS only few like xmodem , ymodem and zmodem type of file transfer was present.
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Mar 14, 2011
I'm new to fedora and also new to Linux too. I'm using lenovo SL410 which is not provisioned for serial port. Now I want to configure cisco router via serial-usb (Z-TEK) converter, for that I have installed minicom and still I'm not able to connect to router. Do I need to install driver for converter that I'm using?
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Aug 18, 2010
I was trying to connect my android phone just to send some AT commands using Minicom or Seyon. But I was not able to connect it. I have connected my phone using a USB cable.Do I need to connect my phone through the serial cable by using a minicom connector to be able to send the commands to the phone.Also when I launch it says Initializing Modem...thenModem at /dev/ttyS0 is available. If I try to Dial it says Warning related to the Baud rate.But After that I am not able to do anything.
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Jun 3, 2010
I have been looking for a script example of reading and writing to the parallel port's data, status, and control registers using bash. I see it done in pascal, tcl, etc. but nothing in bash.
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May 6, 2010
I use Mythbuntu 9.10 with an IMON PAD IR/VFD. Everything is fine except that two buttons (MyDVD and menu) fire their event twice. In that case, I'm not talking about a normal repetition in case of a long button press but they fire their initial events twice.
Here is what irw shows:
0000000029a3d5b7 00 MyDVD iMON-PAD
0000000029a3d5b7 00 MyDVD iMON-PAD
000000002ba385b7 00 Menu iMON-PAD
000000002ba385b7 00 Menu iMON-PAD
I pressed the buttons only once each - and not long enough for a repetition. For all other buttons it's fine. As far as I understand, using the .lirrc file to cope with repetitions is no valid approach (at least it didn't work for me) because the events are all numbered with "00", and not with "00", "01",... - so .lircrc is out of this, right?
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Oct 28, 2010
Ubuntu 10.10 default calculator, gcalctool 5.32. seems to be missing the 10 memory registers it used to have. The geaphic keys for memory functions are missing and control-M does not bring up memory pop-up either. Am I just missing something or have they been removed? I store lots of intermediate results in the registers for use later in calculations.
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Jun 18, 2011
I'm currently running openSuSE 11.4 (kde v 4.6.4), and after unlocking the mouse cursor from the DOSBox (v 0.74) window, none of the Plasma Desktop Widgets or Components will register mouse clicks until I reboot.
Is there something config-wise I might change to prevent this from happening, or is there an otherwise quick way to restart only plasma using the terminal? Yakuake still drops down, and works, fortunately, so doing this is not a problem.
EDIT: Forgot to mention that all of said applications were installed from openSuSE repos using YaST2.
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Sep 20, 2010
Well, upto now i have been using minicom on linux platform.Can any one tell me whether minicom is meant only for linux or is it platform independent?Actually i'm connecting 2 PC's using RS-232 and then passing and viewing the messages using minicom. Both the PC's use Fedora11. Now suppose i want to do the same thing between 2 pc's where one uses linux and other uses windows. So, if minicom is meant only for linux then how to do this?Can some one also suggest some useful links or tutorials regarding this serial communication between to different OS?
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Aug 16, 2010
Myself Bhaskar Chakraborty from India, i m a new user of Ubuntu 10.04 LTS, My system has a dual boot(Windows XP and Ubuntu). I access internet using my Micromax Q5 mobile having Aircel network. it work fine in Windows XP but it doesn't provide drivers for linux. So in Ubuntu i cant access internet. But i want to update ubuntu. So how i update ubuntu offline?
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Jul 11, 2010
i find many article to upgrade using online say yum update or yum upgrade but how to upgrade from centos 5.4 to 5.5 offline via dvd rom
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Apr 29, 2010
I have a netbook which has no serial port. However I use my netbook to connect to Cisco network devices via serial to USB converter. I installed Minicom on my netbook and I don't know how I can tell Minicom to use my USB port rather than default to /dev/ttyS0.
Can anyone tell me how I can change or point Minicom to use my USB port so my serial to USB will work?
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Feb 15, 2011
i am using eUploader in windows and there is a auto test facility where we can run scripts .Is there a auto test facility in minicom,where after establishing the connection i can run a script?
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May 23, 2011
I just fully installed slack 13.37 on my laptop. I was trying to use minicom. But after I typed the command line 'minicom -s' or 'minicom', I did not get the minicom window, the curson stop at the console and never return back until I kill the minicom process.
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Jun 30, 2011
I've done something stupid to my Linux Skype configuration. Only my online contacts are shownit's as if my offline contacts don't exist. This is a problem when I'm trying to figure out if someone is a contact already or not. The screen shot below shows the story. How can I make my offline contacts appear on this screen?
N.B. Answers for the Windows interface are not helpful the Linux interface is completely different.
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Dec 16, 2010
I have a laptop on a wireless network in a apartment building, but the server is in the manager's office, the signal is real good. I also have a desktop with no wireless or wired connection. My question is how do I transfer my apps from my laptop to my desktop in offline mode?
I don't want to install a wireless card for my desktop. Is there a way to install synaptic while offline? Or is there a way to install these apps from a flash drive to my desktop, if so how would I do that?
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Jun 3, 2011
Currently I am using Fedora 15. My question is - how do I build repository in fedora using fedora installation DVD and later on I can install the software from that repository? Second issue is - my friend don't have internet connection. So, how do I install the software like - VLC, amarok, and other players offline? I have downloaded software from RPMFusion, but I am unable to install them. During the installation process, it shows error like - "Can't install src.rpm". There is any other resources where I can get the rpm files so that I can download them and send to my friend and he can install it without any internet connection?
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Jun 8, 2011
I am using ubuntu 10.10 from few days ago. I need to update it. But I have no net connection in home pc. How can i update this without net connection. Anyone let me know how can I do it.
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Jul 28, 2011
I am working on serial communication program its working but when I am giving some input in replay minicom giving junk value.
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May 3, 2010
I have a Sun V120 server, and I connected to it via minicom from a linux machine. The problem is that when I connect, immeadiatly starts to receive the letter m as a command and it returns "Unrecognized command", so it is impossible to configure anything ot to give any command whatsoever. Also, sometimes receives all kind of letters, dots and characters, resulting the same and blocking my keyboard. When I connect from a Windows machine via HyperTerminal all is fine.
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May 18, 2010
Below is data taken from my dedicated server:
[Code]...
I need a script that I can run on an hourly basis that will:
1. Calculate the total downtime since the first date
2. The overall downtime percentage
3. Store this data in a file at /home/bla/file.txt, in the following format: TotalDowntime=03:02:02 Average=0.01%
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Aug 29, 2011
I'm a Linux newbie. I want to install mysql-5.5.15-linux2.6-x86_64.tar.gz on a Debian box offline without using the apt command. How can I do this?
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