Kconfig

#
# Copyright (c) 2019 Nordic Semiconductor
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

source "Kconfig.zephyr"

menu "Nordic Serial LTE Modem"

config SLM_CUSTOMER_VERSION
	string "Customer version string"
	help
	   This version is reported together with baseline versions by AT command "#XSLMVER".

config SLM_AT_MAX_PARAM
	int "Maximum number of parameters in AT command"
	default 42

#
# external XTAL for UART
#
config SLM_EXTERNAL_XTAL
	bool "Use external XTAL for UARTE"
	default y

#
# AT command terminator
#
choice
	prompt "Termination mode"
	default SLM_CR_LF_TERMINATION
	help
		Sets the command terminator used by the serial terminal.
		Available options are:
		-  CR termination
		-  LF termination
		-  CR+LF termination
	config SLM_CR_TERMINATION
		bool "CR termination"
	config SLM_LF_TERMINATION
		bool "LF termination"
	config SLM_CR_LF_TERMINATION
		bool "CR+LF termination"
endchoice

#
# UART buffers (when CMUX is not in use)
#
config SLM_UART_RX_BUF_COUNT
	int "Receive buffers for UART"
	range 2 4
	default 3
	help
	  Amount of buffers for receiving (RX) UART traffic. If the buffers are full, UART RX will be disabled until the buffers are processed.

config SLM_UART_RX_BUF_SIZE
	int "Receive buffer size for UART"
	range 128 4096
	default 256
	help
	  Amount of received (RX), unprocessed, UART traffic that can be held by single buffer.

config SLM_UART_TX_BUF_SIZE
	int "Send buffer size for UART"
	range 128 4096
	default 256
	help
	  Amount of UART traffic waiting to be sent (TX), that can be held. If the buffers are full, will send synchronously.

#
# GPIO functionality
#
config SLM_START_SLEEP
	bool "Enter sleep on startup"
	help
	  If enabled, the SiP is put into deep sleep when powered on.
	  It can then be started using SLM_POWER_PIN.

config SLM_POWER_PIN
	int "Power pin"
	default -1
	help
	  Interface GPIO pin used to put the SiP into deep sleep and wake up from it or exit idle.
	  The pin is configured with a pull up and must be pulled down shortly to perform one power off or wake up operation.

config SLM_INDICATE_PIN
	int "Indicate pin"
	default -1
	help
	  Interface GPIO pin used to indicate that data is available when SLM is idle (after #XSLEEP=2 AT command).

config SLM_INDICATE_TIME
	int "Indication period"
	default 100
	help
	  GPIO active indication time in milliseconds. This setting specify the period length for the pin to be active

#
# LTE network automatic attach
#
config SLM_AUTO_CONNECT
	bool "Automatically connect to the LTE network on start-up or after a reset"
	help
	  Enables automatic connection to the LTE network using the PDN configuration defined in 'slm_auto_connect.h'.

#
# TCP/TLS proxy
#
config SLM_TCP_POLL_TIME
	int "Poll time-out in seconds for TCP connection"
	default 10

config SLM_UDP_POLL_TIME
	int "Poll time-out in seconds for UDP connection"
	default 10

#
# Data mode
#
config SLM_DATAMODE_TERMINATOR
	string "Pattern string to terminate data mode"
	default "+++"
	help
	  Use a pattern to terminate data mode

config SLM_DATAMODE_URC
	bool "Send URC in data mode"
	help
	  Report result of data mode sending

config SLM_DATAMODE_BUF_SIZE
	int "Buffer size for data mode"
	range 1024 8192
	default 4096
	help
	  Size of the buffer for data received in data mode.

#
# Configurable services
#
config SLM_SMS
	bool "SMS support in SLM"
	default y
	select SMS
	help
	  Support SMS send/receive in plain text

config SLM_GNSS
	bool "GNSS support in SLM"
	default y

config SLM_NRF_CLOUD
	bool "nRF Cloud support in SLM"
	default y

config SLM_FULL_FOTA
	bool "Full modem FOTA support in SLM"
	default n
	depends on !BOARD_THINGY91_NRF9160_NS

config SLM_PPP
	bool "PPP support in SLM"
	help
	  When enabled, SLM automatically brings up/down the PPP link
	  when the LTE link (default PDN) is connected/disconnected,
	  regardless of what is done with AT#XPPP.

if SLM_PPP

config SLM_PPP_FALLBACK_MTU
	int "Fallback MTU to be used by PPP"
	default 1280
	help
	  PPP tries to retrieve the cellular link MTU from the modem (using `AT+CGCONTRDP=0`).
	  If no MTU is returned by the modem, this value will be used as a fallback.
	  The MTU will be used for sending and receiving of data on both the PPP and cellular links.

endif

config SLM_CMUX
	bool "CMUX support in SLM"

if SLM_CMUX && SLM_PPP

config SLM_CMUX_AUTOMATIC_FALLBACK_ON_PPP_STOPPAGE
	bool "AT channel automatic fallback to DLCI 1 when PPP stops."
	help
	  This is mainly intended for compatibility with Zephyr's cellular modem driver.
	  If enabled, when PPP stops (which happens automatically when the LTE link goes down)
	  CMUX will make the AT channel be on DLCI 1. This only has an effect if it had been
	  configured to be elsewhere, e.g. with AT#XCMUX=2.

endif

if SLM_CMUX || SLM_PPP

config SLM_MODEM_PIPE_TIMEOUT
	int "Timeout for the CMUX and PPP modem pipe operations in seconds"
	default 10

endif

config SLM_SKIP_READY_MSG
	bool "Skip ready message"
	help
	  Skip sending the ready message when the application is powered on.


module = SLM
module-str = serial modem
source "${ZEPHYR_BASE}/subsys/logging/Kconfig.template.log_config"

rsource "src/ftp_c/Kconfig"
rsource "src/mqtt_c/Kconfig"
rsource "src/http_c/Kconfig"
rsource "src/twi/Kconfig"
rsource "src/gpio/Kconfig"
rsource "src/lwm2m_carrier/Kconfig"
rsource "src/gnss/Kconfig"
rsource "src/nativetls/Kconfig"

endmenu