324 lines
7.8 KiB
Plaintext
324 lines
7.8 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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menu "IO Expander/GPIO Support"
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config IOEXPANDER
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bool "Enable IO Expander Support"
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default n
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---help---
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This directory holds implementations of IO expander drivers.
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See include/nuttx/ioexpander/ioexpander.h for registration information.
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if IOEXPANDER
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config IOEXPANDER_RPMSG
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bool "IO expander rpmsg server and client"
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default n
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---help---
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This settings enable ioexpander rpmsg server and client.
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if IOEXPANDER_RPMSG
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config IOEXPANDER_RPMSG_INT_NCALLBACKS
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int "number of ioexpander rpmsg interrupt callbacks"
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default 32
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depends on IOEXPANDER_INT_ENABLE
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---help---
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This set the IO expander number in interrupt callbacks.
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endif # IOEXPANDER_RPMSG
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config IOEXPANDER_MCP23X17
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bool "MCP23017/MCP23S17 I2C/SPI IO expander"
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default n
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depends on I2C
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---help---
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Enable support for the MCP23017/MCP23S17 IO Expander
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if IOEXPANDER_MCP23X17
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config MCP23X17_MULTIPLE
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bool "Multiple MCP23x17 Devices"
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default n
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---help---
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Can be defined to support multiple MCP23x17 devices on board.
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config MCP23X17_INT_ENABLE
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bool "Enable MCP23x17 Interrupt Support"
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default n
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select IOEXPANDER_INT_ENABLE
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---help---
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Enable driver interrupt functionality
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config MCP23X17_INT_NCALLBACKS
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int "Max number of interrupt callbacks"
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default 4
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depends on MCP23X17_INT_ENABLE
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---help---
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This is the maximum number of interrupt callbacks supported
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config MCP23X17_INT_POLL
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bool "Enable interrupt poll"
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default n
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---help---
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Enable polling for missed interrupts.
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config MCP23X17_INT_POLLDELAY
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int "Interrupt poll delay (used)"
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default 500000
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depends on MCP23X17_INT_POLL
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---help---
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This microsecond delay defines the polling rate for missed interrupts.
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endif # IOEXPANDER_MCP23X17
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config IOEXPANDER_PCA9555
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bool "PCA9555 I2C IO expander"
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default n
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depends on I2C
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---help---
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Enable support for the NXP PCA9555 IO Expander
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if IOEXPANDER_PCA9555
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config PCA9555_MULTIPLE
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bool "Multiple PCA9555 Devices"
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default n
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---help---
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Can be defined to support multiple PCA9555 devices on board.
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config PCA9555_INT_ENABLE
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bool "Enable PCA9555 Interrupt Support"
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default n
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select IOEXPANDER_INT_ENABLE
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---help---
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Enable driver interrupt functionality
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config PCA9555_INT_NCALLBACKS
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int "Max number of interrupt callbacks"
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default 4
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depends on PCA9555_INT_ENABLE
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---help---
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This is the maximum number of interrupt callbacks supported
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config PCA9555_SHADOW_MODE
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bool "Use Shadow Mode instead of Read-Modify-Write Operations"
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default n
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---help---
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This setting enables a mode where the output and pin
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configuration registers are held in RAM.
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With this for example we do not need to read back the
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output-register every time we want to change one pin.
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We do instead change the bit in the internal register
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and then just write this register to the IO-Expander.
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This reduces bus traffic and eliminates the problem of
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EMC-caused toggling of output pins.
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config PCA9555_RETRY
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bool "Retry to send commands and data at I2C communication errors"
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default n
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---help---
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Retry to send commands and data if a I2C-communication
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error occurs (eg. caused by EMC).
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endif # IOEXPANDER_PCA9555
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config IOEXPANDER_PCA9538
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bool "PCA9538 I2C IO expander"
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default n
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depends on I2C
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---help---
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Enable support for the NXP PCA9538 IO Expander
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if IOEXPANDER_PCA9538
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config PCA9538_MULTIPLE
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bool "Multiple PCA9538 Devices"
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default n
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---help---
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Can be defined to support multiple PCA9538 devices on board.
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config PCA9538_INT_ENABLE
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bool "Enable PCA9538 Interrupt Support"
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default n
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select IOEXPANDER_INT_ENABLE
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---help---
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Enable driver interrupt functionality
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config PCA9538_INT_NCALLBACKS
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int "Max number of interrupt callbacks"
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default 4
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depends on PCA9538_INT_ENABLE
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---help---
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This is the maximum number of interrupt callbacks supported
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config PCA9538_SHADOW_MODE
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bool "Use Shadow Mode instead of Read-Modify-Write Operations"
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default n
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---help---
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This setting enables a mode where the output and pin
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configuration registers are held in RAM.
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With this for example we do not need to read back the
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output-register every time we want to change one pin.
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We do instead change the bit in the internal register
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and then just write this register to the IO-Expander.
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This reduces bus traffic and eliminates the problem of
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EMC-caused toggling of output pins.
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config PCA9538_RETRY
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bool "Retry to send commands and data at I2C communication errors"
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default n
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---help---
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Retry to send commands and data if a I2C-communication
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error occurs (eg. caused by EMC).
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endif # IOEXPANDER_PCA9538
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config IOEXPANDER_TCA64XX
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bool "TCA64XX I2C IO expander"
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default n
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depends on I2C && EXPERIMENTAL
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---help---
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Enable support for the TCA64XX IO Expander
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if IOEXPANDER_TCA64XX
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config TCA64XX_MULTIPLE
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bool "Multiple TCA64XX Devices"
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default n
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---help---
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Can be defined to support multiple TCA64XX devices on board.
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config TCA64XX_INT_ENABLE
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bool "Enable TCA64XX Interrupt Support"
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default n
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select IOEXPANDER_INT_ENABLE
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---help---
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Enable driver interrupt functionality
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config TCA64XX_INT_NCALLBACKS
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int "Max number of interrupt callbacks"
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default 4
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depends on TCA64XX_INT_ENABLE
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---help---
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This is the maximum number of interrupt callbacks supported
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config TCA64XX_INT_POLL
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bool "Enable interrupt poll"
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default n
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---help---
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Enable polling for missed interrupts.
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config TCA64XX_INT_POLLDELAY
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int "Interrupt poll delay (used)"
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default 500000
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depends on TCA64XX_INT_POLL
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---help---
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This microsecond delay defines the polling rate for missed interrupts.
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endif # IOEXPANDER_TCA64XX
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config IOEXPANDER_PCF8574
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bool "PCF8574 I2C IO expander"
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default n
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depends on I2C && EXPERIMENTAL
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---help---
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Enable support for the PCF8574 IO Expander
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if IOEXPANDER_PCF8574
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config PCF8574_MULTIPLE
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bool "Multiple PCF8574 Devices"
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default n
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---help---
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Can be defined to support multiple PCF8574 devices on board.
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config PCF8574_INT_ENABLE
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bool "Enable PCF8574 Interrupt Support"
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default n
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select IOEXPANDER_INT_ENABLE
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---help---
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Enable driver interrupt functionality
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config PCF8574_INT_NCALLBACKS
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int "Max number of interrupt callbacks"
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default 4
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depends on PCF8574_INT_ENABLE
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---help---
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This is the maximum number of interrupt callbacks supported
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config PCF8574_INT_POLL
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bool "Enable interrupt poll"
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default n
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---help---
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Enable polling for missed interrupts.
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config PCF8574_INT_POLLDELAY
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int "Interrupt poll delay (used)"
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default 500000
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depends on PCF8574_INT_POLL
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---help---
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This microsecond delay defines the polling rate for missed interrupts.
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endif # IOEXPANDER_PCF8574
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config IOEXPANDER_INT_ENABLE
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bool
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default n
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---help---
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This is the global INT supported flag for io expanders
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config IOEXPANDER_NPINS
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int "Number of pins"
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default 16
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---help---
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Maximum number of pins supported per driver.
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config IOEXPANDER_MULTIPIN
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bool "Support multi-pin access routines"
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default n
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---help---
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This settings enable the definition of routines for
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optimized simultaneous access to multiple pins.
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endif # IOEXPANDER
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config DEV_GPIO
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bool "GPIO driver"
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default n
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---help---
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Enables a simple GPIO input/output driver to support application-
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space testing of hardware.
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config DEV_GPIO_NSIGNALS
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int "Max number of signals"
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default 1
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depends on DEV_GPIO
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---help---
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The maximum number of signals that can be registered with the GPIO
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driver
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config GPIO_LOWER_HALF
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bool "GPIO Lower Half"
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default n
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depends on DEV_GPIO && IOEXPANDER
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---help---
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Enable support for a lower half driver that provides GPIO driver
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support for I/O expander pins.
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if GPIO_LOWER_HALF
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config GPIO_LOWER_HALF_INTTYPE
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int "default interrupt type for GPIO_INTERRUPT_PIN pintype"
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default 14
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---help---
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This is the default interrupt type (IOEXPANDER_VAL_BOTH) for
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GPIO_INTERRUPT_PIN pintype in gplf driver register.
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endif
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endmenu # IO Expander/GPIO Support
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