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/subsys/net/lib/sockets/
A DKconfig49 query is considered timeout. Minimum timeout is 1 second and
50 maximum timeout is 5 min. If the value is higher than
60 This variable is related to the DNS timeout. If the DNS timeout is
63 which DNS query is re-tried. If there is no reply, the backoff
64 interval is doubled and query is retried.
67 This value is 5000 (5 sec). If there is no reply from DNS server
69 If no reply is received, a 3rd query is done after 15 sec (5 + 5 * 2),
70 and the timeout is set to 2 sec so that the total timeout is 17 seconds.
152 This is mostly useful for TLS client side to tell TLS server what is
196 intermediate buffer is needed, as sendmsg() for DGRAM is expected to
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/subsys/net/l2/ethernet/gptp/
A DKconfig32 source is probed when it is actually needed instead of being
118 The port concept is the same thing as network interface.
125 This is the propagation time threshold, above which a port is not
134 The value is the converted in nanoseconds as follow:
142 The value is the converted in nanoseconds as follow:
150 The value is the converted in nanoseconds as follow:
181 is set to 8, then 8 * 8 = 64 bytes of memory is used.
191 precedence. The default value is 255 if the device is non grand
192 master capable, and 248 if it is GM capable.
195 value 255 is used always and this setting is ignored.
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/subsys/logging/
A DKconfig.processing21 If enabled, then if there is no space to log a new message, the
22 oldest one is dropped. If disabled, current message is dropped.
29 internal logger buffer is full and new message cannot be allocated.
38 message is dropped. Forever blocking (-1) is possible however may lead
39 to the logger deadlock if logging is enabled in threads used for
48 up. Log processing thread ID is provided during log initialization.
49 Set 0 to disable the feature. If LOG_PROCESS_THREAD is enabled then
50 this threshold is used by the internal thread.
57 When enabled thread is created by the logger subsystem. Thread is
154 When enabled, shorter timestamp is used and trace message is
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/subsys/net/ip/
A DKconfig11 # Hidden option enabled whenever an IP stack is available.
202 The default value is 1 which means that all the network traffic is
224 The default value is 1 which means that all the network traffic is
263 This is currently not enabled by default.
469 then the packet is discarded.
509 is used when listening or sending network traffic. This is very
556 sockets timeout is configured per socket with
728 network buffer is allocated from.
737 network buffer is allocated from.
756 of the data that is being sent.
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A DKconfig.tcp40 When CONFIG_NET_TC_THREAD_COOPERATIVE = y, lowest priority is
41 CONFIG_NUM_COOP_PRIORITIES-1 else lowest priority is
43 Make sure the priority is lower than lower layer TX threads to
58 suggests to use MSL of 2 minutes, but notes "This is an
60 it is desirable to do so." For low-resource systems, having
75 of TCP data packets. The value is in milliseconds.
86 a second collision is reduced and it reduces further the more
137 how long the data is kept before it is discarded if we have not been
139 queueing is not enabled. The value is in milliseconds.
164 then the packet is discarded.
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A DKconfig.stack12 Set the TX thread stack size in bytes. The TX thread is waiting
15 This value is a baseline and the actual TX stack size might
23 Set the RX thread stack size in bytes. The RX thread is waiting
24 data from network. There is one RX thread in the system.
25 This value is a baseline and the actual RX stack size might
/subsys/random/
A DKconfig11 This option signifies that a non-random number generator is allowed to
15 This capability is provided for testing purposes when a truly random
16 number generator is not available. The non-random number generator
19 This option is intended to be selected only by application-level
21 application is allowed to run with a random number generator that is not
23 unless the sole purpose of the board is testing (e.g. QEMU emulation
27 is selected -- that is indicated by RNG_GENERATOR_CHOICE. An entropy
56 clock. This number generator is not random and used for
65 selected if hardware entropy driver is designed to be a random
110 CTR-DRBG CSPRNG as that is a FIPS140-2 recommended CSPRNG.
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/subsys/shell/
A DKconfig.template.shell_log_queue_timeout8 If queue with pending log messages is full, oldest log message is
9 dropped if queue is still full after requested time (-1 is forever).
10 Logger thread is blocked for that period, thus long timeout impacts
/subsys/logging/backends/
A DKconfig.rtt13 is transferred to up-buffer at once depending on available space and
15 In panic mode backend always blocks and waits until there is space
16 in up-buffer for a message and message is transferred to host.
27 If there is not enough space in up-buffer for a message, drop it.
32 bool "Block until message is transferred to host."
34 Waits until there is enough space in the up-buffer for a message.
39 If there is not enough space in up-buffer for a message overwrite
62 Buffer is used by log_output module for preparing output data (e.g.
70 RTT session is inactive.
99 # Enable processing of printk calls using log if terminal buffer is used.
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/subsys/bluetooth/host/
A DKconfig58 # Even if no driver is selected the following default is still
196 a pool is that the if there is a heavy inflow of such events
237 reason settings_load() is handled externally to the stack, is
278 been updated. If the option is disabled, the CCC is only stored on
288 If the option is disabled, the CF is only stored on disconnection.
316 The filter accept list is a global list and the same list is used
318 it is in use.
707 If the option is true, the default bonding flag is true. Or, the default
794 default) number is 1.
885 feature is enabled.
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/subsys/bluetooth/controller/
A DKconfig.df6 # BT_CTLR_DF_SUPPORT is a wrapper for all DF features. It is referenced by Host
8 # It is required to enable it when Controller supports any DF related feature
61 This sampling mode is optional for Direction Finding according to
70 mode is optional for Direction Finding according to Bluetooth v5.1.
164 is able to store. For nRF5x-based controllers, the hardware imposes
165 the value is within range 2 to 38, where last value is maximum.
178 In such case application is responsible for appropriate GPIOs
218 of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
229 of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
241 of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
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/subsys/storage/stream/
A DKconfig15 bool "Check whether device layout is OK with Stream Flash definition"
21 Once correct configuration has been established and tested it is
28 Enable callback that will be invoked once data is synchronized from
29 stream to device. When callback is not used, disabling the option
38 Option available only if there is at least one device in, a configuration,
46 This is used in stream flash code to exclude invocation of erase on devices that do not
48 Option is available only if there is a mix of devices, in a configuration, where some
49 support erase and some do not. If user is sure to not use Stream Flash with devices that
/subsys/secure_storage/
A DKconfig.its_transform16 The header is made available when this Kconfig option is enabled.
56 The header is made available when this Kconfig option is enabled.
74 for which it is generating a key to the data hashed as a salt.
75 This is not necessarily secure as the device ID may be easily readable
82 This key provider generates keys by hashing the UID of the ITS entry for which it is
83 generating a key. This is not secure, and only intended for functional support,
92 The header is made available when this Kconfig option is enabled.
116 source that doesn't repeat values between reboots is required for this to be secure.
123 The header is made available when this Kconfig option is enabled.
/subsys/ipc/ipc_service/lib/
A DKconfig.icmsg10 This option is enabled by default to allow to use sending API from
11 multiple contexts. Mutex is used to guard access to the memory.
38 When the option is disabled, the user must obey the restrictions
48 Size of stack used by work queue RX thread. This work queue is
50 from the system work queue. The queue is shared among instances.
64 bool "Instance is allowed to set unbound to enabled"
68 property is allowed to be set in any of the ICMsg instances. You
70 no instance of ICMsg is using unbound functionality.
73 bool "Instance is allowed to set unbound to disabled"
77 property is allowed to be set in any of the ICMsg instances. You
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/subsys/dfu/
A DKconfig24 So far only mcuboot support is available.
49 Enables usage swap type field which is required after
59 Estimated size of update image data, which is used to prevent loading of firmware updates
61 used when MCUMGR_GRP_IMG_TOO_LARGE_SYSBUILD is enabled.
74 If enabled, flash is erased as necessary when receiving new firmware,
75 instead of erasing the whole image slot at once. This is necessary
85 a new firmware. This is useful to avoid firmware reboot and test.
86 Another use is to ensure that firmware upgrade routines from internet
101 If value is set to 2 or greater then, this enables support needed when
102 application is combined with MCUboot multi-image boot.
/subsys/mgmt/mcumgr/smp/
A DKconfig5 # The Kconfig file is dedicated to smp subdirectory of MCUmgr
18 This is number of predicted entries in main response map,
20 This value is used by zcbor to predict needed map encoding,
34 is auto generated from MCUMGR_SMP_CBOR_MIN_DECODING_LEVEL_? options.
36 base map, which is already taken into account, should
73 This is a maximum number of levels of maps/lists that will
92 base map, which is already taken into account, should
129 This is a maximum number of levels of maps/lists that will
148 whereby there is a dedicated entry for command error/result codes.
157 text string. This is useful, when returning MGMT_ERR_EUNKNOWN,
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/subsys/mgmt/mcumgr/grp/os_mgmt/
A DKconfig5 # The Kconfig file is dedicated to OS management group of
30 When a reset command is received, the system waits this many milliseconds
40 disabled, modules will reboot when the command is received without
41 notification, when this is enabled and a handler is registered, the
97 This is used for defining CBOR map holding thread info.
98 The value does not affect memory allocation, it is used by zcbor
111 When THREAD_NAME is disabled the name is generated from thread priority,
122 responses, which is more natural for Zephyr.
131 responses, this is default when THREAD_STACK_INFO is selected.
132 Disable this option only when your client application is able to
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/subsys/mgmt/osdp/
A DKconfig.pd7 # OSDP_NUM_CONNECTED_PD is used in CP mode. It is a constant set to 1 when
13 In PD mode, number of connected PDs is always 1 and cannot
21 the queue size is multiplied by number of connected PD so this can grow
30 the message is directed, or the address of the PD sending the reply.
31 Address 0x7F is reserved as a broadcast address to which all PDs would
41 Channel Base Key. When this field is sent to "NONE", the PD is set to
43 channel with default SCBK. Once as secure channel is active with the
109 for each circuit is determined by configuration settings.
133 inactive Output is the state of the Output when no power is applied to the
138 - 03: Like 01, plus: The PD is able to accept timed commands to the
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/subsys/net/lib/config/
A DKconfig20 Beware this is not meant to be used for proper
30 If this option is set, then the networking system is automatically
31 initialized when the device is started. If you do not wish to do
70 The value is in seconds. If for example IPv4 address from DHCPv4 is not
91 This is only applicable in client side applications that try
120 This is only applicable in client side applications that try
161 Only implicit mode is supported, thus 0.
234 If this option is set, then the SNTP server to use for system
257 If the SNTP request fails, then this is the interval to wait
265 If this option is set, then the connection manager is used to
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/subsys/debug/coredump/
A DKconfig20 Core dump is done via logging subsystem.
28 Core dump is saved to a flash partition with DTS alias
34 Core dump (or part of it) is saved in a dedicated area in
35 memory. Such memory is protected at boot time so it could be
36 read after a warm reboot. This is obviously NOT a valid solution
46 Core dump is done via memory window slot[1].
47 It is Intel ADSP memory region shared with xtensa DSP.
48 Window 2 slot [1] is reserved for debugging information.
53 Core dump is done via custom mechanism defined out of tree
90 This is the default.
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/subsys/task_wdt/
A DKconfig29 application that is used as an additional safety layer if the task
42 If a hardware watchdog is configured as a fallback for the task
43 watchdog, its timeout is set to this value plus
58 kernel timer. This is especially important if the hardware watchdog
59 is clocked by an inaccurate low-speed RC oscillator.
66 system reaches a sleep power state. When the system is resumed, the
67 watchdog is also automatically resumed.
68 Note that this feature is supported only by a subset of hardware
/subsys/logging/frontends/
A DKconfig28 Determines how often a report about dropped messages is printed. Given
63 Frontend cannot write to STM if it is used with ETR buffer unless ETR is
64 initialized and memory is properly configured (privileges). Data is stored
65 in the buffer and flushed to the STMESP once the pipeline is ready.
96 performed (e.g. ETR buffer is full).
133 If log message is not completed within that time frame it is discarded.
145 Do not change this value as it is aligned with host decoder (nrfutil trace).
/subsys/bluetooth/audio/
A DKconfig.ascs21 An ASE Sink characteristic represents the state of an ASE, which is
29 An ASE Source characteristic represents the state of an ASE, which is
53 of a stopped stream. The delay is added as it is the Unicast Client's
54 responsibility, but this is a failsafe to ensure that ISO channel is
63 an ASE read or dropping a notification if the ASE state is being accessed by another
/subsys/bluetooth/common/
A DKconfig113 therefore Controller to Host flow control is not needed.
122 For both configurations, there is an additional requirement that is
175 # is disabled.
178 # parallel. Also, when BT_MESH_WORKQ_SYS is enabled, the Mesh stack is starting Extended
181 # command buffer is needed.
276 kernel-wide __ASSERT() when CONFIG_ASSERT is disabled.
325 the 'btmon' tool from BlueZ is capable of doing this.
327 If the target board has two or more external UARTs it is
329 however if there is only a single external UART then
344 the 'btmon' tool from BlueZ is capable of doing this.
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/subsys/debug/
A DKconfig33 Builds Zephyr with Address Sanitizer enabled. This is currently
38 Note that at exit leak detection is disabled for 64-bit boards when
39 GCC is used due to potential risk of a deadlock in libasan.
48 The default behavior of compiler sanitizers is to exit after
84 Call ubsan library routines when undefined behavior is detected
87 values involved. This is currently only supported by boards
93 When undefined behavior is detected, invoke __builtin_trap to
138 with stack overflows, knowledge that this is happening is very
224 in circumstances (twister) where it is enabled via
314 exception is reported.
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