Problem finding what is using a serial port Post: 302728759

10 More Discussions You Might Find Interesting

1. Programming

Problem regarding serial port and multithreading

hello, I am creating a application in which I first open the serial port and then create the thread..for reading the data comming through that serial port. from that same thread I create another thread that is write thread means for writing on the serial port... I am continously polling again...

2. Programming

problem while having a communication with serial port?????

hello, I am gettin problem while sending and recieving data through seial port... when I am sending Data then the reciever end is not able to recieve that data ..... Reciever end is running in infinite loop just polling after some time to check that there is data on the port and then again...

3. UNIX for Dummies Questions & Answers

problem with serial port BSD

Hello all , i have change my system debian linux to freebsd( pcBSD) all working as well , but the serial does not work correctly. Under linux the problem does not appears. my problem is than my serial port does work . the first step than i have make is look with dmesg if my serial are...

4. Solaris

Serial port problem

I am working with solaris 9 sparc and I want to connect physical device in serial port but when I am connecting it,It is showing the error window saying-- So can any1 tell me the reason or is there any package I have to add to work with serial port???

5. Programming

problem in coding for GSM interfacing using serial port

i am having some coding problem in c for interfacing the GSM module through serial port. i want to send/receive sms. i have done all the setting for the port and know the AT command to use in this but i am actually having problem in reading and writing from serial port how to handle the signal when...

6. UNIX for Dummies Questions & Answers

Missing serial port

A neighbour's Ubuntu 10.04 machine has five serial ports, one on the motherboard and four on a PCI card. However, only four cards are showing: # dmesg | grep tty console enabled serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ...

7. Shell Programming and Scripting

Need help with serial port

Hi, I have a external board connected to my serial port. I need to execute "shutdown -r now" command when system boot up. When system boots up it requires a username ans password. Then I need to run my command. I can use rc script but that is rebooting system before it asks for username and...

8. Solaris

How to enable Serial port on ILOM, when Network Port is enabled in parallel

Hi Everyone, In my environment, I have few T5220. On the iLOM Management Card, I have both Network and Serial port are cabled, I don't have any issues while I try to connect using Network Management port, but when I try to connect the serial port for the same server which is actually connected...

9. Programming

Read from serial port

Hi I try to communicate with a GSM modem, from C, for sending SMS. I use standart AT-commands. Working well with terminal. There is no problem writing ti the port. But when I try to read I only get a echo, I write "ATI" and get "ATI" back, I should get somthing like "SIEMENS 35...

10. Solaris

Cabling and adapters to communicate to service processor serial port from Windows PC with USB port.

Hello, I have an unloaded T5140 machine and want to access the ILOM for the first time and subsequently the network port after that., and then load Solaris 10 the final January 2011 build. The first part is what confuses me -the cabling. I am coming from a Windows machine (w/appropriate...

LEARN ABOUT DEBIAN

baycom

BAYCOM(9)						      Kernel Reference Guide							 BAYCOM(9)

NAME

       baycom - amateur (AX.25) packet radio network driver for baycom modems

SYNOPSIS

       #include <linux/baycom.h>
       #include <linux/hdlcdrv.h>

DESCRIPTION

       The driver currently supports three different modems: ser12, par96 and par97.

   ser12
       This  is a very simple 1200 baud AFSK modem. The modem consists only of a modulator/demodulator chip, usually a TI TCM3105. The computer is
       responsible for regenerating the receiver bit clock. The modem connects to a serial port, hence the name. Since the serial port is not used
       as  an  async serial port, the kernel driver for serial ports cannot be used, and this driver only supports standard serial hardware (8250,
       16450, 16550).

   par96
       This is a modem for 9600 baud FSK compatible to the G3RUH standard.  The modem does all the filtering and regenerates the  receiver  clock.
       Data  is transferred from and to the PC via a shift register.  The shift register is filled with 16 bits and an interrupt is signalled. The
       PC then empties the shift register in a burst. This modem connects to the parallel port, hence the name.

   par97
       This is a redesign of the par96 modem by Henning Rech, DF9IC. The modem is protocol compatible to par96, but uses only three low power  ICs
       and can therefore be fed from the parallel port and does not require an additional power supply.

IOCTL CALLS

       The ioctl calls follow the implementation in the hdlcdrv.

       BAYCOMCTL_GETMODEMTYPE
	      returns the modem type (i.e. ser12 or par96) and the options in effect (currently only the source of the DCD signal)

       BAYCOMCTL_SETMODEMTYPE
	      sets the modem type and the options. Only superuser can do this.

       BAYCOMCTL_GETDEBUG
	      return some debugging values. Not always available.

SEE ALSO

       baycom (9), soundmodem (9), linux/drivers/net/hdlcdrv.c,

AUTHOR

       baycom was written by Thomas Sailer, HB9JNX/AE4WA, (t.sailer@alumni.ethz.ch).

Linux 2.1.x							  2 October 1996							 BAYCOM(9)