nuttx-apps/modbus/Kconfig

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

menu "FreeModBus"

config MODBUS
	bool "Modbus support via FreeModBus"
	default n

if MODBUS

config MB_ASCII_ENABLED
	bool "Modbus ASCII support"
	default y

config MB_ASCII_MASTER
	bool "Modbus ASCII master"
	default n
	depends on MB_ASCII_ENABLED

config MB_RTU_ENABLED
	bool "Modbus RTU support"
	default y

config MB_RTU_MASTER
	bool "Modbus RTU master"
	default n
	depends on MB_RTU_ENABLED

config MB_TCP_ENABLED
	bool "Modbus TCP support"
	default y

config MB_HAVE_CLOSE
	bool "Platform close callbacks"
	default n
	depends on MB_TCP_ENABLED
	---help---
		A port which wants to get an callback must select
		CONFIG_MB_HAVE_CLOSE and provide vMBPortClose() as
		as vMBTCPPortClose() (if CONFIG_MB_TCP_ENABLED)

config MB_ASCII_TIMEOUT_SEC
	int "Character timeout"
	depends on MB_ASCII_ENABLED
	default 1
	---help---
		Character timeout value for Modbus ASCII

		The character timeout value is not fixed for Modbus ASCII and is therefore
		a configuration option. It should be set to the maximum expected delay
		time of the network.


config MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS
	int "Timeout to wait before sending"
	depends on MB_ASCII_ENABLED
	default 0
	---help---
		Timeout to wait in ASCII prior to enabling transmitter

		If defined the function calls vMBPortSerialDelay with the argument
		MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS to allow for a delay before
		the serial transmitter is enabled. This is required because some
		targets are so fast that there is no time between receiving and
		transmitting the frame. If the master is to slow with enabling its
		receiver then he will not receive the response correctly.

config MB_FUNC_HANDLERS_MAX
	int "Maximum number of Modbus functions"
	default 16
	---help---
		Maximum number of Modbus functions codes the protocol stack should support.

		The maximum number of supported Modbus functions must be greater than
		the sum of all enabled functions in this file and custom function
		handlers. If set to small adding more functions will fail.

config MB_FUNC_OTHER_REP_SLAVEID_BUF
	int "Size of Slave ID report buffer"
	depends on MB_FUNC_OTHER_REP_SLAVEID_ENABLED
	default 32
	---help---
		Number of bytes which should be allocated for the Report Slave ID command.

		This number limits the maximum size of the additional segment in the
		report slave id function. See eMBSetSlaveID() for more information on
		how to set this value. It is only used if MB_FUNC_OTHER_REP_SLAVEID_ENABLED
		is set to 1.

config MB_FUNC_OTHER_REP_SLAVEID_ENABLED
	bool "Report Slave ID function"
	default y
	---help---
		If the Report Slave ID function should be enabled.

config MB_FUNC_READ_INPUT_ENABLED
	bool "Read Input Registers function"
	default y
	---help---
		If the Read Input Registers function should be enabled.

config MB_FUNC_READ_HOLDING_ENABLED
	bool "Read Holding Registers function"
	default y
	---help---
		If the Read Holding Registers function should be enabled.

config MB_FUNC_WRITE_HOLDING_ENABLED
	bool "Write Single Register function"
	default y
	---help---
		If the Write Single Register function should be enabled.

config MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED
	bool "Write Multiple registers function"
	default y
	---help---
		If the Write Multiple registers function should be enabled.

config MB_FUNC_READ_COILS_ENABLED
	bool "Read Coils function"
	default y
	---help---
		If the Read Coils function should be enabled.

config MB_FUNC_WRITE_COIL_ENABLED
	bool "Write Coils function"
	default y
	---help---
		If the Write Coils function should be enabled.

config MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED
	bool "Write Multiple Coils function"
	default y
	---help---
		If the Write Multiple Coils function should be enabled.

config MB_FUNC_READ_DISCRETE_INPUTS_ENABLED
	bool "Read Discrete Inputs function"
	default y
	---help---
		If the Read Discrete Inputs function should be enabled.

config MB_FUNC_READWRITE_HOLDING_ENABLED
	bool "Read/Write Multiple Registers function"
	default y
	---help---
		If the Read/Write Multiple Registers function should be enabled.

if MB_ASCII_MASTER || MB_RTU_MASTER

config MB_MASTER_TOTAL_SLAVE_NUM
	int "Total number slaves"
	default 16
	---help---
		The total slaves in Modbus Master system. Default 16.
		NOTE: The slave ID must be continuous from 1.

endif # MB_ASCII_MASTER || MB_RTU_MASTER
endif # MODBUS
endmenu # FreeModBus