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Parameterline
TypeText string
Value
A defined TTY port on host system:
  • "/dev/tty<N>" - virtual serial lines
  • "/dev/ttyS<N>" - onboard serial lines
  • "/dev/ttyUSB<N>" - modem or usb serial lines adapters
  • "/dev/tty<XXX>" - proprietary (depending on a driver) devices such as DIGI or MOXA cards
Warning

If a virtual console "/dev/tty<N>" is going to be used, it must be freed from all the processes running on it at first. Refer to your OS documentation for details, also some description on how to do it is available here.


Warning

A specific account for running CHARON ("charon") does not allow usage of virtual consoles "/dev/tty<N>" as CHARON consoles. If you plan to map CHARON console or serial lines to "/dev/tty<N>" use only "root" account for CHARON running.


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Parameterport
TypeNumeric
ValueTCP/IP port number for the virtual serial line. A virtual serial line always listens on this port for incoming connection requests.

application


Parameterapplication
TypeText string
Value

A command line for calling some host application for communication to Charon on a given serial line.

Example:

set OPA0 application = "xterm -title OPA0 -e telnet 127.0.0.1 10003"

If "putty" terrminl emulator is going to be used as an option copy the following file to your home directory:

# cp /opt/charon/putty/sessions/CHTERM-VT100 $HOME/.config/putty/sessions

Example:

set OPA0 application = "putty -load CHTERM-VT100 -title OPA0@XYZ -P 10003"



break_on

Parameterbreak_on
TypeText string
Value

Specifies what byte sequences received over virtual serial line must trigger HALT command.

(warning) This parameter works only for console line (for CHARON-VAX it is the only line of UART and the "line[3]" of QUART).

Specify the following values: "Ctrl-P", "Break" or "none" to disable triggering HALT condition.

Example:

set OPA0 break_on="Ctrl-P"
The default value is "Break" for line 3 of QUART and "none" for other lines.

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Parameterlog_file_size
TypeText string
Value

If log rotation is enabled, the log_file_size parameter determines the log file size threshold at which the log is automatically rotated.

  • "unlimited" or "0" (default) - the feature is disabled
  • "default" - default size is used (4Mb)
  • <size>[KMG] - size of the current log file in bytes with additional multipliers:

    • K - Kilobyte - multiply by 1024

    • M - Megabyte - multiply by 1024*1024

    • G - Gigabyte - multiply by 1024*1024*1024

Examples:

set OPA0 log_file_size="default"


set OPA0 log_file_size=10M

(warning) Minimum log file size is 64K, maximum is 1G. Setting size less then 64K effectively makes the log file unlimited.

log_flush_period


Parameterlog_flush_period
TypeNumeric
Value
  • <period-in-seconds>

Defines a period of flushing log to disk.

Default period is 60 seconds (it means that every minute log file is flushed to disk)

Example:


set OPA0 log_flush_period=30



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log_flush_period

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