MCUMGR is stuck after a flash of a big image

RE: MCUMGR is stuck after a flash of a big image

Atanas Vladimirov — Mon, 04 Nov 2024 10:45:12 GMT

Thank you so much!

Have a wonderful day,

Atanas

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 04 Nov 2024 08:15:31 GMT

You need to attach an external debugger to the board (a DK or a standalone debug probe) to recover the device if you have the same problem as OP.

RE: MCUMGR is stuck after a flash of a big image

Atanas Vladimirov — Mon, 04 Nov 2024 07:33:35 GMT

Hey Vidar Berg sorry if I'm asking something stupid, but can nrfutil be of use in such case? Can you erase/flash the "whole" device and start from scratch? Or this is not an option and the only way to "de-brick" is to attach to nrf52833-DK and reprogram?

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 28 Oct 2024 09:23:26 GMT

Thanks, it was worth a shot to see if anything can be done..

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 28 Oct 2024 09:17:59 GMT

Unfortunately, there isn’t much that can be done with these if they do not accept new updates.

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 28 Oct 2024 08:55:14 GMT

I understand but the units are already in the wild and this is the configuration they have..

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 28 Oct 2024 08:49:56 GMT

Serial recovery is something that must be enabled in the MCUBoot child-image. Please refer to the link in my previous comment for details.

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 28 Oct 2024 08:33:58 GMT

Thanks, Here's our prj.conf, anything else we can do?

# Enable mcumgr.
CONFIG_MCUMGR=y

# Enable most core commands.
CONFIG_MCUMGR_CMD_IMG_MGMT=y
CONFIG_MCUMGR_CMD_OS_MGMT=y

# Ensure an MCUboot-compatible binary is generated.
CONFIG_BOOTLOADER_MCUBOOT=y

# Enable the serial mcumgr transport.
CONFIG_MCUMGR_SMP_UART=y
CONFIG_NET_BUF_USER_DATA_SIZE=7

# Disable UART Console and enable the RTT console
CONFIG_UART_MCUMGR=y

CONFIG_UART_CONSOLE_MCUMGR=y

CONFIG_NFCT_PINS_AS_GPIOS=y

CONFIG_CONSOLE_SUBSYS=y
CONFIG_CONSOLE_GETLINE=y

# Add support for temperature sensor
CONFIG_NRFX_TEMP=y

#For analog read:
CONFIG_ADC=y

# BT configuration 
CONFIG_BT=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_DEVICE_APPEARANCE=833
CONFIG_BT_DEVICE_NAME_DYNAMIC=y
CONFIG_BT_DEVICE_NAME_MAX=128
CONFIG_BT_BROADCASTER=y
CONFIG_BT_OBSERVER=y
CONFIG_BT_DEBUG_LOG=n


CONFIG_BT_BUF_ACL_RX_SIZE=251
CONFIG_BT_BUF_ACL_TX_SIZE=251
CONFIG_BT_L2CAP_TX_MTU=247
CONFIG_BT_CTLR_DATA_LENGTH_MAX=251

CONFIG_BT_CTLR_TX_PWR_PLUS_8=y

#CONFIG_LOG=y

# CONFIG_LOG_BUFFER_SIZE=1024
CONFIG_BT_CENTRAL=y
CONFIG_BT_GATT_CLIENT=y
# CONFIG_BT_NUS=y
CONFIG_BT_GATT_DM=y
# CONFIG_BT_SMP=y
# CONFIG_BT_SIGNING=y
# CONFIG_BT_DIS=n
# CONFIG_BT_ATT_PREPARE_COUNT=5
# CONFIG_BT_BAS=n
# CONFIG_BT_HRS=n
# CONFIG_BT_PRIVACY=y
# CONFIG_BT_KEYS_OVERWRITE_OLDEST=y
# todo: this have conflicts with the settings 
#CONFIG_BT_SETTINGS=y

CONFIG_BT_DEBUG_NONE=y
CONFIG_BT_ASSERT=n
CONFIG_BT_DATA_LEN_UPDATE=n
CONFIG_BT_PHY_UPDATE=n
CONFIG_BT_GATT_CACHING=n
CONFIG_BT_GATT_SERVICE_CHANGED=n
CONFIG_BT_GAP_PERIPHERAL_PREF_PARAMS=n
CONFIG_BT_SETTINGS_CCC_LAZY_LOADING=y
CONFIG_BT_HCI_VS_EXT=n


# CONFIG_SETTINGS=y
# CONFIG_SETTINGS_RUNTIME=y

# CONFIG_FLASH=y
# CONFIG_FLASH_PAGE_LAYOUT=y
# CONFIG_FLASH_MAP=y
# CONFIG_NVS=y

#CONFIG_NEWLIB_LIBC=y

# CONFIG_CBPRINTF_NANO=y
# CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y

CONFIG_HEAP_MEM_POOL_SIZE=2048
CONFIG_MAIN_STACK_SIZE=1024

CONFIG_POSIX_API=y

CONFIG_BT_GATT_DM_MAX_ATTRS=50

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 28 Oct 2024 08:30:23 GMT

Hi,

"serial recovery" is when you have a serial DFU transport (USB or UART) enabled in the bootloader itself. This allows DFU to be performed within the bootloader.

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/topic/exercise-1-dfu-over-uart/

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 28 Oct 2024 08:13:09 GMT

HI Vidar Berg , coming back to this thread..

In our prj.conf we have:

CONFIG_BOOTLOADER_MCUBOOT=y

Can you please elaborate on what did you mean "serial recovery"

RE: MCUMGR is stuck after a flash of a big image

saoron — Tue, 28 Nov 2023 06:09:38 GMT

thanks

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 27 Nov 2023 13:05:07 GMT

I'm sorry, but I don't see a way to distribute a fix for this, as FOTA is effectively disabled on these devices. This is why performing extensive testing of updates before deployment is critical.

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 27 Nov 2023 13:00:12 GMT

Serial recovery is not enabled, only have mcumgr enabled.

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 27 Nov 2023 12:59:04 GMT

I'm afraid it might not be possible to recover from this since you just receive an error when you try to free up the slot by erasing it. Have you enabled serial recovery in the bootloader, or are you performing DFU through the application?

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 27 Nov 2023 12:22:04 GMT

Yep..

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 27 Nov 2023 12:21:26 GMT

The solution should be to not distribute an update that is too big, or have you already done that?

RE: MCUMGR is stuck after a flash of a big image

saoron — Mon, 27 Nov 2023 12:18:55 GMT

Thanks for your reply, Anything we can do to fix this remotely?

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Mon, 27 Nov 2023 12:13:00 GMT

The max. image size is limited by the slot size and also the image trailer size as noted in the MCUboot documentation here: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.5.0/mcuboot/design.html#image-slots. Ideally, there should have been a static assert to trigger a build error if the image is too big to fit into the allocated slot partition.

RE: MCUMGR is stuck after a flash of a big image

saoron — Sun, 26 Nov 2023 07:55:21 GMT

Any ideas Vidar Berg ?

RE: MCUMGR is stuck after a flash of a big image

saoron — Fri, 17 Nov 2023 15:40:19 GMT

v2.0.2

RE: MCUMGR is stuck after a flash of a big image

Vidar Berg — Fri, 17 Nov 2023 15:02:05 GMT

Hello,

Please let me know which version of the SDK you are using so I can attempt to reproduce this.

Thanks,

Vidar