145 lines
3.6 KiB
Plaintext
145 lines
3.6 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 ARCH_HAVE_SPI_CRCGENERATION
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bool
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default n
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config ARCH_HAVE_SPI_CS_CONTROL
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bool
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default n
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config ARCH_HAVE_SPI_BITORDER
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bool
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default n
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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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config SPI_SLAVE
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bool "SPI slave"
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default n
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---help---
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Enable support for SPI slave features
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if SPI_SLAVE
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config SPI_SLAVE_DMA
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bool "SPI slave DMA"
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default n
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depends on ARCH_DMA && EXPERIMENTAL
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---help---
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Enable support for DMA data transfers (not yet implemented).
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endif
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config SPI_EXCHANGE
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bool "SPI exchange"
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default y
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---help---
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Driver supports a single exchange method (vs a recvblock() and
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sndblock() methods).
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config SPI_CMDDATA
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bool "SPI CMD/DATA"
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default n
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---help---
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Devices on the SPI bus require out-of-band support to distinguish
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command transfers from data transfers. Such devices will often support
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either 9-bit SPI (yech) or 8-bit SPI and a GPIO output that selects
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between command and data.
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config SPI_CALLBACK
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bool "Media change callbacks"
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default y if MMCSD_SPI
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default n if !MMCSD_SPI
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---help---
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Support the callback method in the SPI interface. This will allow
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the SPI-based MMC/SD driver to get a notification of changes in the
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card status when an SD card is inserted or removed.
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config SPI_HWFEATURES
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bool
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default n
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---help---
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Selected only if a specific H/W feature is selected. This is
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basically the OR of any specific hardware feature and enables
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the SPI hwfeatures() interface method.
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config SPI_CRCGENERATION
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bool
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default n
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select SPI_HWFEATURES
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depends on ARCH_HAVE_SPI_CRCGENERATION
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---help---
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Selected by MCU Kconfig logic if implementation supports automatic
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generation of SPI CRCs. Enables the HWFEAT_CRCGENERATION option
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as well as the hwfeartures() interface method.
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config SPI_CS_CONTROL
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bool "SPI CS Behavior Control"
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default n
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select SPI_HWFEATURES
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depends on ARCH_HAVE_SPI_CS_CONTROL
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---help---
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Enables possibilities to define the behavior of CS.
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Also enables the hwfeatures() interface method.
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config SPI_BITORDER
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bool "SPI Bit Order Control"
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default n
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select SPI_HWFEATURES
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depends on ARCH_HAVE_SPI_BITORDER
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---help---
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Enables capability to select MSB- or LSB-first hardware feature for
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data transfers.
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config SPI_CS_DELAY_CONTROL
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bool "SPI CS Delay Control"
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default n
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---help---
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Enables possibilities to define the SPI-ChipSelect-Delays like
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time between ChipSelect assertion and first Data-Bit, the time
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between the last Data-Bit and the de-assertion and the minimum
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delay between two ChipSelects.
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This option enables the setdelay() interface method.
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config SPI_DRIVER
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bool "SPI character driver"
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default n
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depends on SPI_EXCHANGE
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---help---
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Build in support for a character driver at /dev/spi[N] that may be
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used to perform SPI bus transfers from applications. The intent of
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this driver is to support SPI testing. It is not suitable for use
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in any real driver application.
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config SPI_BITBANG
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bool "SPI bit-bang device"
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default n
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---help---
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Enable support for a generic SPI bit-bang device.
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See include/nuttx/spi/spi_bitbang.h for further information.
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if SPI_BITBANG
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config SPI_BITBANG_VARWIDTH
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bool "SPI bit-bang variable width transfers"
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default n
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---help---
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Enable support for a variable data width transfers. Default: 8-bit
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only.
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endif # SPI_BITBANG
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endif # SPI
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