608 lines
16 KiB
Plaintext
608 lines
16 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config DISABLE_POLL
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bool "Disable driver poll interfaces"
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default n
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---help---
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The sizes of drivers can be reduced if the poll() method is not
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supported. If you do not use poll() or select(), then you can
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select DISABLE_POLL to reduce the code footprint by a small amount.
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This selection disables the poll() interface as well as interfaces
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the derive from poll() such as select().
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config DEV_NULL
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bool "Enable /dev/null"
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default y
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config DEV_ZERO
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bool "Enable /dev/zero"
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default n
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config ARCH_HAVE_RNG
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bool
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config DEV_RANDOM
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bool "Enable /dev/random"
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default y
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depends on ARCH_HAVE_RNG
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---help---
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Enable support for /dev/urandom provided by a hardware TRNG.
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config DEV_URANDOM
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bool "Enable /dev/urandom"
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default n
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---help---
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Enable support for /dev/urandom provided by either a hardware TRNG or
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by a software PRNG implementation.
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NOTE: This option may not be cryptographially secure and should not
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be enabled if you are concerned about cyptographically secure
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pseudo-random numbers (CPRNG) and do not know the characteristics
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of the software PRNG impelementation!
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if DEV_URANDOM
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choice
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prompt "/dev/urandom algorithm"
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default DEV_URANDOM_ARCH if ARCH_HAVE_RNG
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default DEV_URANDOM_XORSHIFT128 if !ARCH_HAVE_RNG
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config DEV_URANDOM_XORSHIFT128
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bool "xorshift128"
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---help---
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xorshift128 is a pseudorandom number generator that is simple,
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portable, and can also be used on 8-bit and 16-bit MCUs.
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NOTE: Not cyptographically secure
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config DEV_URANDOM_CONGRUENTIAL
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bool "Conguential"
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---help---
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Use the same congruential general used with srand(). This algorithm
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is computationally more intense and uses double precision floating
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point. NOTE: Good randomness from the congruential generator also
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requires that you also select CONFIG_LIB_RAND_ORDER > 2
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NOTE: Not cyptographically secure
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config DEV_URANDOM_ARCH
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bool "Architecture-specific"
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depends on ARCH_HAVE_RNG
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---help---
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The implementation of /dev/urandom is provided in archtecture-
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specific logic using hardware TRNG logic. architecture-specific
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logic must provide the whole implementation in this case, including
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the function devurandom_register(). In this case, /dev/urandom may
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refer to the same driver as /dev/random.
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NOTE: May or may not be cyptographically secure, depending upon the
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implementation.
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endchoice # /dev/urandom algorithm
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endif # DEV_URANDOM
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source drivers/loop/Kconfig
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menu "Buffering"
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config DRVR_WRITEBUFFER
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bool "Enable write buffer support"
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default n
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---help---
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Enable generic write buffering support that can be used by a variety
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of drivers.
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if DRVR_WRITEBUFFER
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config DRVR_WRDELAY
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int "Write flush delay"
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default 350
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---help---
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If there is no write activity for this configured amount of time,
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then the contents will be automatically flushed to the media. This
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reduces the likelihood that data will be stuck in the write buffer
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at the time of power down.
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endif # DRVR_WRITEBUFFER
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config DRVR_READAHEAD
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bool "Enable read-ahead buffer support"
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default n
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---help---
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Enable generic read-ahead buffering support that can be used by a
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variety of drivers.
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if DRVR_WRITEBUFFER || DRVR_READAHEAD
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config DRVR_READBYTES
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bool "Support byte read method"
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default y if MTD_BYTE_WRITE
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default n if !MTD_BYTE_WRITE
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config DRVR_REMOVABLE
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bool "Support removable media"
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default n
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config DRVR_INVALIDATE
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bool "Support cache invalidation"
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default n
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endif # DRVR_WRITEBUFFER || DRVR_READAHEAD
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endmenu # Buffering
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config RAMDISK
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bool "RAM Disk Support"
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default n
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---help---
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Can be used to set up a block of memory or (read-only) FLASH as
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a block driver that can be mounted as a files system. See
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include/nuttx/drivers/ramdisk.h.
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menuconfig CAN
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bool "CAN Driver Support"
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default n
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---help---
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This selection enables building of the "upper-half" CAN driver.
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See include/nuttx/drivers/can.h for further CAN driver information.
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if CAN
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config CAN_EXTID
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bool "CAN extended IDs"
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default n
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---help---
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Enables support for the 28-bit extended ID. Default Standard 11-bit
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IDs.
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config ARCH_HAVE_CAN_ERRORS
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bool
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default n
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config CAN_ERRORS
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bool "CAN error reporting"
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default n
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depends on ARCH_HAVE_CAN_ERRORS
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---help---
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Support CAN error reporting. If this option is selected then CAN
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error reporting is enabled. In the event of an error, the ch_error
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bit will be set in the CAN message and the following message payload
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will include a more detailed description of certain errors.
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config CAN_FD
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bool "CAN FD"
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default n
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---help---
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Enables support for the CAN_FD mode.
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config CAN_FIFOSIZE
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int "CAN driver I/O buffer size"
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default 8
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---help---
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The size of the circular buffer of CAN messages. Default: 8
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config CAN_NPENDINGRTR
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int "Number of pending RTRs"
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default 4
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---help---
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The size of the list of pending RTR requests. Default: 4
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config CAN_TXREADY
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bool "can_txready interface"
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default n
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select SCHED_WORKQUEUE
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---help---
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This selection enables the can_txready() interface. This interface
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is needed only for CAN hardware that supports queing of outgoing
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messages in a H/W FIFO.
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The CAN upper half driver also supports a queue of output messages
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in a S/W FIFO. Messages are added to that queue when when
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can_write() is called and removed from the queue in can_txdone()
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when each TX message is complete.
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After each message is added to the S/W FIFO, the CAN upper half
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driver will attempt to send the message by calling into the lower
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half driver. That send will not be performed if the lower half
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driver is busy, i.e., if dev_txready() returns false. In that
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case, the number of messages in the S/W FIFO can grow. If the
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S/W FIFO becomes full, then can_write() will wait for space in
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the S/W FIFO.
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If the CAN hardware does not support a H/W FIFO then busy means
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that the hardware is actively sending the message and is
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guaranteed to become non busy (i.e, dev_txready()) when the
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send transfer completes and can_txdone() is called. So the call
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to can_txdone() means that the transfer has completed and also
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that the hardware is ready to accept another transfer.
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If the CAN hardware supports a H/W FIFO, can_txdone() is not
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called when the tranfer is complete, but rather when the
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transfer is queued in the H/W FIFO. When the H/W FIFO becomes
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full, then dev_txready() will report false and the number of
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queued messages in the S/W FIFO will grow.
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There is no mechanism in this case to inform the upper half
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driver when the hardware is again available, when there is
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again space in the H/W FIFO. can_txdone() will not be called
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again. If the S/W FIFO becomes full, then the upper half
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driver will wait for space to become available, but there is
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no event to awaken it and the driver will hang.
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Enabling this feature adds support for the can_txready()
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interface. This function is called from the lower half
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driver's CAN interrupt handler each time a TX transfer
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completes. This is a sure indication that the H/W FIFO is
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no longer full. can_txready() will then awaken the
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can_write() logic and the hang condition is avoided.
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choice
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prompt "TX Ready Work Queue"
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default CAN_TXREADY_HIPRI
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depends on CAN_TXREADY
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config CAN_TXREADY_LOPRI
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bool "Low-priority work queue"
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select SCHED_LPWORK
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config CAN_TXREADY_HIPRI
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bool "High-priority work queue"
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select SCHED_HPWORK
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endchoice # TX Ready Work Queue
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config CAN_LOOPBACK
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bool "CAN loopback mode"
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default n
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---help---
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A CAN driver may or may not support a loopback mode for testing. If the
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driver does support loopback mode, the setting will enable it. (If the
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driver does not, this setting will have no effect).
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config CAN_NPOLLWAITERS
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int "Number of poll waiters"
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default 2
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depends on !DISABLE_POLL
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---help---
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The maximum number of threads that may be waiting on the
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poll method.
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endif # CAN
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config ARCH_HAVE_PWM_PULSECOUNT
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bool
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default n
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config ARCH_HAVE_PWM_MULTICHAN
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bool
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default n
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menuconfig PWM
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bool "PWM Driver Support"
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default n
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---help---
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This selection enables building of the "upper-half" PWM driver.
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See include/nuttx/drivers/pwm.h for further PWM driver information.
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if PWM
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config PWM_PULSECOUNT
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bool "PWM Pulse Count Support"
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default n
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depends on ARCH_HAVE_PWM_PULSECOUNT
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---help---
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Some hardware will support generation of a fixed number of pulses.
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This might be used, for example to support a stepper motor. If the
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hardware will support a fixed pulse count, then this configuration
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should be set to enable the capability.
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config PWM_MULTICHAN
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bool "PWM Multiple Output Channel Support"
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default n
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depends on ARCH_HAVE_PWM_MULTICHAN
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depends on !PWM_PULSECOUNT
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---help---
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Enables support for multiple output channels per timer.
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if PWM_MULTICHAN
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config PWM_NCHANNELS
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int "Number of Output Channels Per Timer"
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default 1
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range 1 4
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---help---
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Specifies the number of output channels per timer. Each timer
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may support fewer output channels than this value.
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endif # PWM_MULTICHAN
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endif # PWM
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config ARCH_HAVE_I2CRESET
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bool
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default n
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menuconfig I2C
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bool "I2C Driver Support"
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default n
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---help---
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This selection enables building of the "upper-half" I2C driver.
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See include/nuttx/i2c/i2c_master.h for further I2C driver information.
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if I2C
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source drivers/i2c/Kconfig
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endif
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menuconfig SPI
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bool "SPI Driver Support"
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default n
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---help---
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This selection enables selection of common SPI options. This option
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should be enabled by all platforms that support SPI interfaces.
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See include/nuttx/spi/spi.h for further SPI driver information.
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if SPI
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source drivers/spi/Kconfig
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endif
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menuconfig I2S
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bool "I2S Driver Support"
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default n
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---help---
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This selection enables selection of common I2S options. This option
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should be enabled by all platforms that support I2S interfaces.
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See include/nuttx/audio/i2s.h for further I2S driver information.
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if I2S
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endif # I2S
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source drivers/timers/Kconfig
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menuconfig ANALOG
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bool "Analog Device(ADC/DAC) Support"
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default n
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---help---
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This directory holds implementations of analog device drivers.
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This includes drivers for Analog to Digital Conversion (ADC) as
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well as drivers for Digital to Analog Conversion (DAC).
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See include/nuttx/analog/*.h for registration information.
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if ANALOG
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source drivers/analog/Kconfig
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endif # ANALOG
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menuconfig AUDIO_DEVICES
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bool "Audio Device Support"
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default n
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---help---
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Enable support for audio device drivers. This includes drivers for
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MP3, WMA and Ogg Vorbis encoding, decoding, as well as drivers for
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interfacing with external DSP chips to perform custom audio functions.
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NOTE: All of these drivers depend on support from the audio subsystem
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enabled with the AUDIO selection.
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if AUDIO_DEVICES
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source drivers/audio/Kconfig
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endif # AUDIO_DEVICES
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menuconfig VIDEO_DEVICES
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bool "Video Device Support"
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default n
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---help---
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Enable support for video device drivers.
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if VIDEO_DEVICES
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source drivers/video/Kconfig
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endif # VIDEO_DEVICES
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menuconfig BCH
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bool "Block-to-Character (BCH) Support"
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default n
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---help---
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Contains logic that may be used to convert a block driver into
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a character driver. This is the complementary conversion as that
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performed by loop.c. See include/nuttx/drivers/drivers.h for
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registration information.
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if BCH
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source drivers/bch/Kconfig
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endif # BCH
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menuconfig INPUT
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bool "Input Device Support"
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default n
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---help---
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This directory holds implementations of input device drivers.
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This includes such things as touchscreen and keypad drivers.
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See include/nuttx/input/*.h for registration information.
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if INPUT
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source drivers/input/Kconfig
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endif # INPUT
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source drivers/ioexpander/Kconfig
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source drivers/lcd/Kconfig
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source drivers/leds/Kconfig
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menuconfig MMCSD
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bool "MMC/SD Driver Support"
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default n
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---help---
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Support for MMC/SD block drivers. MMC/SD block drivers based on
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SPI and SDIO/MCI interfaces are supported. See include/nuttx/mmcsd.h
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and include/nuttx/sdio.h for further information.
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if MMCSD
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source drivers/mmcsd/Kconfig
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endif # MMCSD
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menuconfig MODEM
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bool "Modem Support"
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default n
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---help---
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Enable modem support.
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if MODEM
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source drivers/modem/Kconfig
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endif # MODEM
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menuconfig MTD
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bool "Memory Technology Device (MTD) Support"
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default n
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---help---
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Memory Technology Device (MTD) drivers. Some simple drivers for
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memory technologies like FLASH, EEPROM, NVRAM, etc. See
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include/nuttx/mtd/mtd.h
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(Note: This is a simple memory interface and should not be
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confused with the "real" MTD developed at infradead.org. This
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logic is unrelated; I just used the name MTD because I am not
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aware of any other common way to refer to this class of devices).
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if MTD
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source drivers/mtd/Kconfig
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endif # MTD
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menuconfig EEPROM
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bool "EEPROM support"
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default n
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---help---
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This directory holds implementations of EEPROM drivers.
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if EEPROM
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source drivers/eeprom/Kconfig
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endif
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menuconfig NETDEVICES
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bool "Network Device/PHY Support"
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default n if !ARCH_HAVE_PHY
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default y if ARCH_HAVE_PHY
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depends on NET
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---help---
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Network interface driver and PHY selections. This options enables
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selection of drivers for external Ethernet MAC chips. The majority
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of MCUs, however, have built-in, internal Ethernet MAC peripherals
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and that Ethernet support is selected in the MCU-specific
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configuration menus.
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Most Ethernet MAC drivers, whether internal or external, will
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require configuration of an external PHY device. That external PHY
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device is also selected via this menu.
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if NETDEVICES
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source drivers/net/Kconfig
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endif # NETDEVICES
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menuconfig PIPES
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bool "FIFO and named pipe drivers"
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default n
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---help---
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FIFO and named pipe drivers. Standard interfaces are declared
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in include/unistd.h
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if PIPES
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source drivers/pipes/Kconfig
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endif # PIPES
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source drivers/power/Kconfig
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menuconfig SENSORS
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bool "Sensor Device Support"
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default n
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---help---
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Drivers for various sensors
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if SENSORS
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source drivers/sensors/Kconfig
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endif # SENSORS
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menuconfig SERCOMM_CONSOLE
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bool "Osmocom-bb Sercomm Driver Support"
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default n
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---help---
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Sercomm is the transport used by osmocom-bb that runs on top of serial.
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See http://bb.osmocom.org/trac/wiki/nuttx-bb/run for detailed the usage
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of nuttx with sercomm.
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drivers/sercomm is only built if SERCOMM_CONSOLE in the NuttX
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configuration file. If you attempt to build this driver without
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osmocom-bb, you will get compilation errors because of header files
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that are needed from the osmocom-bb.
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if SERCOMM_CONSOLE
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source drivers/sercomm/Kconfig
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endif # SERCOMM_CONSOLE
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menuconfig SERIAL
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bool "Serial Driver Support"
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default y
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---help---
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Front-end character drivers for chip-specific UARTs. This provide
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some TTY-like functionality and are commonly used (but not required
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for) the NuttX system console. See also include/nuttx/serial/serial.h
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if SERIAL
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source drivers/serial/Kconfig
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endif # SERIAL
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menuconfig USBDEV
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bool "USB Device Driver Support"
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default n
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---help---
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USB device drivers. See also include/nuttx/usb/usbdev.h
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if USBDEV
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source drivers/usbdev/Kconfig
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endif # USBDEV
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menuconfig USBHOST
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bool "USB Host Driver Support"
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default n
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---help---
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USB host drivers. See also include/nuttx/usb/usbhost.h
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if USBHOST
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source drivers/usbhost/Kconfig
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endif # USBHOST
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config HAVE_USBTRACE
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bool
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default n
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menuconfig USBMONITOR
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bool "USB Monitor"
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default n
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depends on HAVE_USBTRACE
|
|
---help---
|
|
If USB device tracing (USBDEV_TRACE) AND/OR USB host tracing
|
|
(USBHOST_TRACE) are enabled then this option will select the USB
|
|
monitor. The USB monitor is a daemon that will periodically collect
|
|
the buffered USB trace data and dump it to the SYSLOG device.
|
|
|
|
if USBMONITOR
|
|
source drivers/usbmonitor/Kconfig
|
|
endif # USBMONITOR
|
|
|
|
menuconfig DRIVERS_WIRELESS
|
|
bool "Wireless Device Support"
|
|
default n
|
|
---help---
|
|
Drivers for various wireless devices.
|
|
|
|
source drivers/wireless/Kconfig
|
|
|
|
menuconfig DRIVERS_CONTACTLESS
|
|
bool "Contactless Device Support"
|
|
default n
|
|
---help---
|
|
Drivers for various contactless devices.
|
|
|
|
source drivers/contactless/Kconfig
|
|
|
|
source drivers/syslog/Kconfig
|