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# Copyright Runtime.io 2018. All rights reserved.
# Copyright Nordic Semiconductor ASA 2020-2022. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
# The Kconfig file is dedicated to UART transport of MCUmgr
# subsystem and provides Kconfig options to control aspects of
# the transport.
#
# Options defined in this file should be prefixed:
# MCUMGR_TRANSPORT_UART_
menuconfig MCUMGR_TRANSPORT_UART
bool "UART mcumgr SMP transport"
depends on CONSOLE
select UART_MCUMGR
select BASE64
help
Enables handling of SMP commands received over UART. This is a
lightweight alternative to MCUMGR_TRANSPORT_SHELL. It allows mcumgr
commands to be received over UART without requiring an additional
thread.
if MCUMGR_TRANSPORT_UART
if UART_ASYNC_API
menuconfig MCUMGR_TRANSPORT_UART_ASYNC
bool "Use async UART API when available"
help
The option enables use of UART async API when available for selected mcumgr uart port.
if MCUMGR_TRANSPORT_UART_ASYNC
config MCUMGR_TRANSPORT_UART_ASYNC_BUFS
int "Number of async RX UART buffers"
range 2 8
default 2
help
The asynchronous UART API requires registering RX buffers for received data; when the RX
reaches the end of a buffer, it will send event requesting next buffer, to be able to
receive data without stopping due to running out of buffer space. At least two buffers
area required for smooth RX operation.
config MCUMGR_TRANSPORT_UART_ASYNC_BUF_SIZE
int "Size of single async RX UART buffer"
default 64
help
The size of single buffer for asynchronous RX.
endif # MCUMGR_TRANSPORT_UART_ASYNC
endif # UART_ASYNC_API
config MCUMGR_TRANSPORT_UART_MTU
int "UART SMP MTU"
default 256
help
Maximum size of SMP frames sent and received over UART, in bytes.
This value must satisfy the following relation:
MCUMGR_TRANSPORT_UART_MTU <= MCUMGR_TRANSPORT_NETBUF_SIZE + 2
endif # MCUMGR_TRANSPORT_UART