RE: ncs1.7 ota use external flash

Август — Mon, 06 Dec 2021 01:54:03 GMT

Hello,

Thank you for your sharing,you can add these config at your child_image/mcuboot/prj.conf.
Through uart0 maybe you can find the problem.

Maybe west flash is not good, you can use nRF Connect->Programmer it works ok

CONFIG_LOG=y

CONFIG_LOG_MODE_IMMEDIATE=y

CONFIG_LOG_DEFAULT_LEVEL=4

CONFIG_PRINTK=y

CONFIG_LOG_MODE_MINIMAL=n

CONFIG_UART_CONSOLE=y

CONFIG_RTT_CONSOLE=n

CONFIG_CONSOLE_HANDLER=y

RE: ncs1.7 ota use external flash

Tom_H — Fri, 03 Dec 2021 10:40:18 GMT

Hello!

I managed to get the OTA process working on an nRF52840-DK using NCS version 1.7.1 and the external flash for the secondary MCUboot slot. My project is based on the SMP Server Sample (smp_svr) with overlay `overlay-bt.conf`. I used Using external flash memory partitions and NCS: mcu_boot/external_flash/child_image/mcuboot/ as a reference.

Starting from the SMP Server sample project, I added the board overlay for the external flash and the configuration of the MCUboot child image.

boards/nrf52840dk_nrf52840.overlay:

/ {
	chosen {
		nordic,pm-ext-flash = &mx25r64;
	};
};

child_image/mcuboot/prj.conf:

#
# Copyright (c) 2021 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

# In order to provide board specific configurations to the MCUboot child image
# we also need to provide a base configuration for MCUboot. This file contains
# the basic configurations needed to successfully build and run MCUboot.

# MCUboot requires a large stack size, otherwise an MPU fault will occur
CONFIG_MAIN_STACK_SIZE=10240

# Set the size here so that the size of MCUBOOT_SECONDARY won't change
# if the default value changes.
CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x20000

CONFIG_DEBUG_OPTIMIZATIONS=y

# Enable flash operations
CONFIG_FLASH=y

# This value must match the size of the MCUboot primary partition.
CONFIG_PM_PARTITION_SIZE_MCUBOOT_SECONDARY=0xda000

# This must be increased to accommodate the bigger images.
CONFIG_BOOT_MAX_IMG_SECTORS=256

# Enable serial recovery
CONFIG_UART_CONSOLE=n
CONFIG_MCUBOOT_SERIAL=y
CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y

CONFIG_NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE=16

Additionally I have to add following configuration lines to the project configuration file to fix application startup and image verification.

prj.conf:

# This value must match the size of the MCUboot primary partition
CONFIG_PM_PARTITION_SIZE_MCUBOOT_SECONDARY=0xda000

CONFIG_NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE=16

The partition size of the secondary MCUboot slot have been updated in prj.conf and child_image/mcuboot/prj.conf to correspond with the CMake output (see Using external flash memory partitions). To get image verification working for the secondary slot, it was necessary to add CONFIG_NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE=16 to both configuration files.

Image upload and verification is working and has been tested with the MCUmgr image management tool. One remaining problem is, that the application does not boot after a j-Link flash. A second reset is required to get the application up running. Do you have any advice on how to fix this?

RE: ncs1.7 ota use external flash

Август — Thu, 25 Nov 2021 06:26:26 GMT

Hello Elfving,

Thanks for your response.

I want to use bootloader-external-flash upgrade my application.

So I modified the hello work project.

Below is my configuration

CMakeLists.txt

external_flash_ota.conf

mcuboot.conf

52840.overlay

main.c

partitions.yml

But it can't work

Attached is my code，can you give me some advice?

devzone.nordicsemi.com/.../ota.zip

RE: ncs1.7 ota use external flash

Elfving — Wed, 24 Nov 2021 15:35:14 GMT

Hello!

The documentation you have is for the master, and isn't that descriptive. Take a look at the one for the NCS version you are using instead.

And what do you mean by upgrading it?

Best regards,

Elfving