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# Shell configuration options
# Copyright (c) 2014-2015 Wind River Systems, Inc.
# Copyright (c) 2016 Intel Corporation
# Copyright (c) 2018 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0
menuconfig SHELL
bool "Shell"
imply LOG_RUNTIME_FILTERING
if SHELL
module = SHELL
module-str = Shell
source "subsys/logging/Kconfig.template.log_config"
source "subsys/shell/backends/Kconfig.backends"
config SHELL_LOCAL
bool
depends on !SHELL_REMOTE_CLI
select EVENTS
default y
help
Indicates that the shell is local, not remote client.
config SHELL_MINIMAL
bool "Default config to reduce flash and memory requirements"
help
This is a meta-configuration option to significantly reduce the flash
and memory requirements of the shell. Enabling it will choose Kconfig
defaults which favor reduced flash or memory requirements over extra
features.
config SHELL_DEVICE_HELPERS
bool "Shell device helpers"
imply DEVICE_DT_METADATA
default y if !SHELL_MINIMAL
config SHELL_THREAD_PRIORITY_OVERRIDE
bool "Override default shell thread priority"
help
Option to change the default value of shell thread priority.
if SHELL_THREAD_PRIORITY_OVERRIDE
config SHELL_THREAD_PRIORITY
int "Shell thread priority"
default 0
help
Set thread priority of the shell
endif
config SHELL_STACK_SIZE
int "Shell thread stack size"
default 4096 if NET_SHELL_HTTP_CLIENT_SUPPORTED
default 3168 if OPENTHREAD_SHELL
default 3072 if 64BIT
default 2048 if MULTITHREADING
default 0 if !MULTITHREADING
help
Stack size for thread created for each instance.
config SHELL_BACKSPACE_MODE_DELETE
bool "Default escape code for backspace is DELETE (0x7F)"
default y
help
Terminals have different escape code settings for backspace button.
Some terminals send code: 0x08 (backspace) other 0x7F (delete). When
this option is set shell will expect 0x7F for backspace key.
config SHELL_PROMPT_CHANGE
bool "Allow prompt change in runtime"
default y if !SHELL_MINIMAL
help
Allow for the modification of the shell prompt at runtime.
Enabling this will allocate additional RAM memory where
the string of the prompt will be stored.
config SHELL_PROMPT_BUFF_SIZE
int "Shell prompt buffer size"
depends on SHELL_PROMPT_CHANGE
range 2 40
default 10 if SHELL_MINIMAL
default 20
help
Maximum prompt size in bytes. One byte is reserved for the string
terminator character.
config SHELL_CMD_BUFF_SIZE
int "Shell command buffer size"
default 128 if SHELL_MINIMAL
default 256
help
Maximum command size in bytes. One byte is reserved for the string
terminator character.
config SHELL_PRINTF_BUFF_SIZE
int "Shell print buffer size"
default 30
help
Maximum text buffer size for fprintf function.
It is working like stdio buffering in Linux systems
to limit number of peripheral access calls.
config SHELL_PRINTF_AUTOFLUSH
bool "Indicate if the buffer should be automatically flushed"
default y
help
Specify whether the shell's printing functions should automatically
flush the printf buffer.
config SHELL_DEFAULT_TERMINAL_WIDTH
int "Default terminal width"
range 1 $(UINT16_MAX)
default 80
help
Default terminal width is used to break lines.
config SHELL_DEFAULT_TERMINAL_HEIGHT
int "Default terminal height"
default 24
config SHELL_ARGC_MAX
int "Maximum arguments in shell command"
range 3 $(UINT8_MAX)
default 30 if NET_L2_WIFI_SHELL
default 71 if CAN_SHELL
default 20
help
Maximum number of arguments that can build a command.
config SHELL_TAB
bool "The Tab button support in shell"
default y if !SHELL_MINIMAL
help
Enable using the Tab button in the shell. The button
can be used for prompting commands, or for autocompletion.
This feature has high impact on flash usage.
config SHELL_TAB_AUTOCOMPLETION
bool "Commands autocompletion with the Tab button"
depends on SHELL_TAB
default y if !SHELL_MINIMAL
help
Enable commands and subcommands autocompletion with the Tab
key. This function can be deactivated to save some flash.
config SHELL_ASCII_FILTER
bool "Filter incoming ASCII characters"
default y
help
Shell will not collect characters that are not in
ASCII range: <0, 127>. As a result filtered characters will not be
printed on the terminal and passed to the command handler.
config SHELL_WILDCARD
bool "Wildcard support in shell"
select POSIX_C_LIB_EXT
default y if !SHELL_MINIMAL
help
Enables using wildcards: * and ? in the shell.
config SHELL_MSG_CMD_NOT_FOUND
bool "': command not found' message in the shell"
default y
help
If enabled, the shell prints out this message.
config SHELL_MSG_SPECIFY_SUBCOMMAND
bool "'Please specify a subcommand.' message in the shell"
default y
help
If enabled, the shell prints out this message.
config SHELL_ECHO_STATUS
bool "Echo on shell"
default y
help
If enabled shell prints back every input byte.
config SHELL_START_OBSCURED
bool "Display asterisk when echoing"
help
If enabled, don't echo actual character, but echo * instead.
This is used for login prompts.
config SHELL_VT100_COMMANDS
bool "VT100 commands in shell"
default y
help
Enables VT100 commands in shell (e.g. cursor position, clear screen etc.).
config SHELL_VT100_COLORS
bool "Colors in shell"
depends on SHELL_VT100_COMMANDS
default y if !SHELL_MINIMAL
help
If enabled VT100 colors are used in shell (e.g. print errors in red).
config SHELL_GETOPT
bool "Threadsafe getopt support in shell"
select GETOPT
help
This config creates a separate getopt_state for the shell instance.
It ensures that using getopt with shell is thread safe.
When more threads are using sys_getopt please call sys_getopt_state_get to
get getopt state of the shell thread.
config SHELL_METAKEYS
bool "Metakeys"
default y if !SHELL_MINIMAL
help
Enables shell meta keys: Ctrl+a, Ctrl+b, Ctrl+c, Ctrl+d, Ctrl+e,
Ctrl+f, Ctrl+k, Ctrl+l, Ctrl+u, Ctrl+w, Alt+b, Alt+f
Meta keys will not be active when shell echo is set to off.
config SHELL_HELP
bool "Help message"
default y if !SHELL_MINIMAL
help
Enables shell functions for printing formatted help message.
config SHELL_HELP_OPT_PARSE
bool "Parse -h and --help options"
depends on SHELL_HELP
depends on !SHELL_GETOPT
default y
help
Shell parses command to find '-h' or '--help' string. If the shell
finds the string, it will automatically print a help message
for a command.
config SHELL_HELP_ON_WRONG_ARGUMENT_COUNT
bool "Printing help on wrong argument count"
depends on SHELL_HELP
default y if !SHELL_MINIMAL
config SHELL_HISTORY
bool "History in shell"
default y if !SHELL_MINIMAL
help
Enable commands history. History can be accessed using up and down
arrows or Ctrl+n and Ctrl+p meta keys.
config SHELL_HISTORY_BUFFER
int "History buffer in bytes"
default 128 if SHELL_MINIMAL
default 512
depends on SHELL_HISTORY
help
Number of bytes dedicated for storing executed commands.
config SHELL_STATS
bool "Shell statistics"
default y if !SHELL_MINIMAL
config SHELL_CMDS
bool "Built-in commands"
default y if !SHELL_MINIMAL
depends on !SHELL_REMOTE_CLI
help
Enable built-in commands like 'clear', 'history', etc.
config SHELL_CMDS_RESIZE
bool "Resize command"
depends on SHELL_CMDS
depends on SHELL_VT100_COMMANDS
default y if !SHELL_MINIMAL
help
By default shell assumes width of a terminal screen set to 80
characters. Each time terminal screen width is changed resize command
must be called to ensure correct text display on the terminal screen.
The resize command can be turned off to save code memory (~0,5k).
config SHELL_CMDS_SELECT
bool "Select command"
depends on SHELL_CMDS
help
This option enables select command. It can be used to set new root
command. Exit to main command tree is with alt+r.
config SHELL_CMD_ROOT
string "Set a root command at init"
help
This option sets a root command at shell init,
and when exiting to main command tree with alt+r.
config SHELL_LOG_BACKEND
bool "Shell log backend"
depends on LOG && !LOG_MODE_MINIMAL
select MPSC_PBUF
select LOG_OUTPUT
default y if LOG
help
When enabled, backend will use the shell for logging.
This option is enabled by default.
Disabling this option disables log output to all shell backends.
Disabling log output to a specific shell backend can be achieved
using the shell backend's LOG_LEVEL option
(e.g. CONFIG_SHELL_TELNET_INIT_LOG_LEVEL_NONE=y).
config SHELL_LOG_BACKEND_CUSTOM
bool "Use custom backend implementation"
help
When enabled, standard implementation of shell log backend is not included.
It allows to provide custom implementation of multiplexing logging messages
with shell data.
if SHELL_LOG_BACKEND
config SHELL_LOG_OUTPUT_TIMESTAMP
bool "Log output timestamp"
default y
help
Enable timestamp in log output.
config SHELL_LOG_FORMAT_TIMESTAMP
bool "Format timestamp"
default y
help
Enable timestamp formatting.
config SHELL_LOG_OUTPUT_LEVEL
bool "Log output level"
default y
help
Enable log level in log output.
config SHELL_LOG_OUTPUT_CRLF_NONE
bool "Log output CRLF none"
help
Do not modify CRLF characters in log output.
config SHELL_LOG_OUTPUT_CRLF_LFONLY
bool "Log output CRLF LF only"
help
Convert CRLF to LF in log output.
config SHELL_LOG_OUTPUT_THREAD
bool "Log output thread"
default y
help
Enable logging thread id or name
config SHELL_LOG_OUTPUT_SKIP_SOURCE
bool "Log output skip source"
help
Skip outputting source in log output.
endif # SHELL_LOG_BACKEND
config SHELL_AUTOSTART
bool "Auto-start shell at boot"
default y
help
If enabled, shell will be automatically started.
config SHELL_CMDS_RETURN_VALUE
bool "Retval command"
depends on SHELL_CMDS
default y
help
This option enables the retval command. It is used to retrieve
the return value from the most recently executed command.
config SHELL_CUSTOM_HEADER
bool "Include Custom Shell Header [EXPERIMENTAL]"
select EXPERIMENTAL
help
When enabled, a custom application provided header, named
"zephyr_custom_shell.h", is included at the end of shell.h. This enables
extension of the shell APIs at the macro level. Please use cautiously!
The internal shell API may change in future releases.
config SHELL_TX_TIMEOUT_MS
int "Shell TX timeout in milliseconds"
default 500 if SHELL_LOG_BACKEND
default 50
help
The timeout in milliseconds for the shell TX mutex. This is used to
prevent deadlocks when called from other than the shell's processing thread.
When using the shell log backend, the timeout should be longer to avoid
timeouts due to log processing. A value of 0 means no timeout.
config SHELL_BYPASS_READ_BUF_SIZE
int "Bypass read buffer size"
range 1 $(UINT16_MAX)
default SEGGER_RTT_BUFFER_SIZE_DOWN if SHELL_BACKEND_RTT
default 16
help
Size of buffer used for reading data in bypass mode.
This buffer is allocated on stack. The bypass reads data
in a loop, so a small buffer is sufficient.
Must be smaller than SHELL_STACK_SIZE.
When using RTT backend, this defaults to SEGGER_RTT_BUFFER_SIZE_DOWN
for backward compatibility.
config SHELL_REMOTE
depends on IPC_SERVICE
bool "Shell remote host"
help
If enabled, the shell supports remote clients.
if SHELL_REMOTE
config SHELL_REMOTE_MULTI_CLI
bool "Multiple remote clients support"
help
If enabled, the shell supports multiple remote clients.
config SHELL_REMOTE_TMP_BUF_SIZE
int "Temporary buffer size for remote shell command data"
range 16 2048
default 128
help
Buffer size on the shell host for remote command syntax and help text,
and for packing exec messages sent to the remote shell client.
If the buffer is too small, the help string will be truncated.
endif # SHELL_REMOTE
config SHELL_REMOTE_CLI
bool "Shell remote client"
depends on IPC_SERVICE
imply SHELL_MINIMAL
help
If enabled, the shell works as a remote client.
config SHELL_REMOTE_EP_NAME
string "Shell remote endpoint name"
default "shell_remote"
depends on SHELL_REMOTE || SHELL_REMOTE_CLI
config SHELL_REMOTE_TIMEOUT_MS
int "Shell remote timeout in milliseconds"
default 100
help
The timeout in milliseconds for the IPC communication.
if SHELL_REMOTE_CLI
config SHELL_REMOTE_CLI_SKIP_RO_STRINGS
bool "Skip read-only strings in remote message"
help
When enabled, read-only strings are not included in the remote message.
This can save some memory (for example, stack space) and reduces the size of
IPC messages.
config SHELL_REMOTE_CLI_BUF_SIZE
int "Internal buffer size"
range 64 2048
default 128 if SHELL_REMOTE_CLI_SKIP_RO_STRINGS
default 256
help
Size of the internal buffer used for remote messages.
config SHELL_REMOTE_CLI_KWORK
bool "Use kwork context for command execution"
default y
config SHELL_REMOTE_CLI_STACK_SIZE
int "Thread stack size"
default 2048
depends on !SHELL_REMOTE_CLI_KWORK
endif
config SHELL_ALIASES
bool "Support command aliases"
help
Aliases can be used the same way as in Linux shells. You can rename
an existing command if you want to have shortcuts.
So instead of typing "kernel thread stacks" you could have an alias
called
stacks="kernel thread stacks"
so when typing "stacks", the full command "kernel thread stacks"
would be executed instead.
config SHELL_CMDS_ALIASES
bool "Aliases command"
depends on SHELL_CMDS
depends on SHELL_ALIASES
default y
help
This option shows current command aliases.
config SHELL_ALIASES_FILE
string "Host file where aliases are stored"
depends on SHELL_ALIASES
help
The aliases file will store each alias one line at a time.
User must create this file on host side.
config SHELL_ALIASES_HAS_FILE
bool
default y if SHELL_ALIASES_FILE != ""
depends on SHELL_ALIASES
source "subsys/shell/modules/Kconfig"
endif # SHELL