# # For a description of the syntax of this configuration file, # see misc/tools/kconfig-language.txt. # config MSEC_PER_TICK int "tick timer" default 10 ---help--- The default system timer is 100Hz or MSEC_PER_TICK=10. This setting may be defined to inform NuttX that the processor hardware is providing system timer interrupts at some interrupt interval other than 10 msec. config RR_INTERVAL int "round robin timeslice" default 0 ---help--- The round robin timeslice will be set this number of milliseconds; Round robin scheduling can be disabled by setting this value to zero. config SCHED_INSTRUMENTATION bool "Monitor system performance" default n ---help--- enables instrumentation in scheduler to monitor system performance. config TASK_NAME_SIZE int "Maximum task name size" default 32 ---help--- Spcifies that maximum size of a task name to save in the TCB. Useful if scheduler instrumentation is selected. Set to zero to disable. config JULIAN_TIME bool "Enables Julian time conversions" default n ---help--- Enables Julian time conversions config START_YEAR int "start year" default 2010 config START_MONTH int "start month" default 1 config START_DAY int "start day" default 1 config DEV_CONSOLE bool "Enable /dev/console" default y ---help--- Set if architecture-specific logic provides /dev/console. Enables stdout, stderr, stdin. config DEV_LOWCONSOLE bool "enable low-level serial console" default n ---help--- Use the simple, low-level, write-only serial console driver (minimul support) config MUTEX_TYPES: bool "Enable mutex types" default n ---help--- Set to enable support for recursive and errorcheck mutexes. Enables pthread_mutexattr_settype(). config PRIORITY_INHERITANCE bool "Enable priority inheritance " default n ---help--- Set to enable support for priority inheritance on mutexes and semaphores. config SEM_PREALLOCHOLDERS int "Pre-allocated holders" default 16 depends on PRIORITY_INHERITANCE ---help--- This setting is only used if priority inheritance is enabled. It defines the maximum number of different threads (minus one) that can take counts on a semaphore with priority inheritance support. This may be set to zero if priority inheritance is disabled OR if you are only using semaphores as mutexes (only one holder) OR if no more than two threads participate using a counting semaphore. config SEM_NNESTPRIO int "Maximum number of higher priority threads" default 16 depends on PRIORITY_INHERITANCE ---help--- If priority inheritance is enabled, then this setting is the maximum number of higher priority threads (minus 1) than can be waiting for another thread to release a count on a semaphore. This value may be set to zero if no more than one thread is expected to wait for a semaphore. config FDCLONE_DISABLE bool "Disable cloning of file descriptors" default n ---help--- Disable cloning of all file descriptors by task_create() when a new task is started. If set, all files/drivers will appear to be closed in the new task. config FDCLONE_STDIO bool "Disable clone file descriptors without stdio" default n ---help--- Disable cloning of all but the first three file descriptors (stdin, stdout, stderr) by task_create() when a new task is started. If set, all files/drivers will appear to be closed in the new task except for stdin, stdout, and stderr. config SDCLONE_DISABLE bool "Disable cloning of socket descriptors" default n ---help--- Disable cloning of all socket desciptors by task_create() when a new task is started. If set, all sockets will appear to be closed in the new task. config DISABLE_OS_API bool "Disable NuttX interfaces" default n ---help--- The following can be used to disable categories of APIs supported by the OS. If the compiler supports weak functions, then it should not be necessary to disable functions unless you want to restrict usage of those APIs. There are certain dependency relationships in these features. o mq_notify logic depends on signals to awaken tasks waiting for queues to become full or empty. o pthread_condtimedwait() depends on signals to wake up waiting tasks. config DISABLE_CLOCK bool "Disable clock interfaces" depends on DISABLE_OS_API default n config DISABLE_POSIX_TIMERS bool "Disable POSIX timers" depends on DISABLE_OS_API default n config DISABLE_PTHREAD bool "Disable pthread support" depends on DISABLE_OS_API default n config DISABLE_SIGNALS bool "Disable signal support" depends on DISABLE_OS_API default n config DISABLE_MQUEUE bool "Disable POSIX message queue support" depends on DISABLE_OS_API default n config DISABLE_MOUNTPOINT bool "Disable support for mount points" depends on DISABLE_OS_API default n config DISABLE_ENVIRON bool "Disable environment variable support" depends on DISABLE_OS_API default n config DISABLE_POLL bool "Disable driver poll interfaces" depends on DISABLE_OS_API default n comment "Sizes of configurable things (0 disables)" config MAX_TASKS int "Max tasks" default 32 ---help--- The maximum number of simultaneously active tasks. This value must be a power of two. config MAX_TASK_ARGS int "Maximum number of task arguments" default 4 ---help--- This controls the maximum number of of parameters that a task may receive (i.e., maxmum value of 'argc') config NPTHREAD_KEYS int "Number of pthread keys" default 4 ---help--- The number of items of thread- specific data that can be retained config NFILE_DESCRIPTORS int "Max file descriptors" default 16 ---help--- The maximum number of file descriptors (one for each open) config NFILE_STREAMS int "Max file streams" default 16 ---help--- The maximum number of streams that can be fopen'ed config NAME_MAX int "name max" default 32 ---help--- The maximum size of a file name. config PREALLOC_MQ_MSGS int "Pre-allocated messages" default 32 ---help--- The number of pre-allocated message structures. The system manages a pool of preallocated message structures to minimize dynamic allocations config MQ_MAXMSGSIZE int "Maximum message size" default 32 ---help--- Message structures are allocated with a fixed payload size given by this setting (does not include other message structure overhead. config MAX_WDOGPARMS int "max watchdog parms" default 4 ---help--- Maximum number of parameters that can be passed to a watchdog handler config PREALLOC_WDOGS int "Pre-allocated watchdogs" default 32 ---help--- The number of pre-allocated watchdog structures. The system manages a pool of preallocated watchdog structures to minimize dynamic allocations config PREALLOC_TIMERS int "Pre-allocated timers" default 8 ---help--- The number of pre-allocated POSIX timer structures. The system manages a pool of preallocated timer structures to minimize dynamic allocations. Set to zero for all dynamic allocations. comment "Stack and heap information" config BOOT_RUNFROMFLASH bool "boot run from flash" default n ---help--- Some configurations support XIP operation from FLASH but must copy initialized .data sections to RAM config BOOT_COPYTORAM bool "boot copy to ram" default n ---help--- Some configurations boot in FLASH but copy themselves entirely into RAM for better performance. config CUSTOM_STACK bool "Enable custom stack" default n ---help--- The up_ implementation will handle all stack operations outside of the nuttx model. This is necessary for certain architectures that have have hardware stacks (such as the 8051 family). config STACK_POINTER hex "" ---help--- The initial stack pointer (arm7tdmi only). config IDLETHREAD_STACKSIZE int "Idle thread stack size" default 1024 ---help--- The size of the initial stack used by the IDLE thread. The IDLE thread is the thread that (1) performs the inital boot of the system up to the point where user_start() is spawned, and (2) there after is the IDLE thread that executes only when there is no other thread ready to run. config USERMAIN_STACKSIZE int "Main thread stack size" default 2048 ---help--- The size of the stack to allocate for the main user thread that begins at the user_start() entry point. config PTHREAD_STACK_MIN int "Minimum pthread stack size" default 256 ---help--- Minimum pthread stack size config PTHREAD_STACK_DEFAULT int "Default pthread stack size" default 2048 ---help--- Default pthread stack size