nRF5340DK mcumgr image upload stalls at 0%

Question

I'm using a nRF5340DK with nRF Connect SDK v1.9.0 with MCUBoot and want to upload firmware updates for the application core using mcumgr.

I use the hello_world sample in Segger Embedded Studio.

The mass storage functionality of the nRF5340DK is disabled.

I connect the nRF5340DK to my Windows 10 PC and get three COM devices. COM3 is connected to the application core.

In mcumgr, I added the connstring:

mcumgr conn add nrf53 type="serial" connstring="COM3,baud=115200,mtu=4096"

Testing the connection works:

mcumgr -c nrf53 echo hello
hello

Showing all images on the nRF5340DK works too:

mcumgr -c nrf53 image list
Images:
 image=0 slot=0
    version: 1.0.0
    bootable: true
    flags: active confirmed
    hash: 153ac8a64b4c3f007157f7b808663936ba6745dd86d75b20dab5bce5029d628f
Split status: N/A (0)

And now, according to every tutorial I found, I should upload the newly built image file like this:

mcumgr -c nrf53 image upload -e app_update.bin
 0 B / 41.25 KiB [-------------------------------------------------------------------------------------------------------------------------------]   0.00%

But this is all that happens. It stalls at 0%. I tried to start cmd in admin-mode, still the same problem. I tried the timeout flag -t, but still nothing.

Using RTT Viewer, I get the text from the print() statement in main.c, so this works too.

I followed mainly this tutorial.

This is my prj.conf file:

# Added MCUBoot as first stage bootloader
CONFIG_BOOTLOADER_MCUBOOT=y
#CONFIG_BOOT_SIGNATURE_KEY_FILE="privMCUBoot.pem"	# for debugging remove private key file
CONFIG_MCUBOOT_IMAGE_VERSION="2"

# Enable mcumgr
CONFIG_MCUMGR=y

# Enable the serial mcumgr transport
CONFIG_MCUMGR_SMP_UART=y

# Enable most core commands
CONFIG_MCUMGR_CMD_IMG_MGMT=y
CONFIG_MCUMGR_CMD_OS_MGMT=y

# Disable UART Console and enable the RTT console
CONFIG_UART_CONSOLE=n
CONFIG_RTT_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y

# Some command handlers require a large stack.
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096

CONFIG_HEAP_MEM_POOL_SIZE=2048

My main.c file:

/*
 * Copyright (c) 2012-2014 Wind River Systems, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr.h>
#include <sys/printk.h>
#include "os_mgmt/os_mgmt.h"
#include "img_mgmt/img_mgmt.h"

void main(void)
{
    os_mgmt_register_group();
    img_mgmt_register_group();

    printk("Print to check change.\n");
}

I'm at a loss here. Any idea how to fix this?

Best regards,

Alex

AHaug · Accepted Answer

Hi, 
 I followed mainly this tutorial. 
 When you said you followed Simons guide, which of the topics did you follow? It is only one of the guides that works for nRF5340, which is the Serial DFU of app core and net core on the nRF5340 , which has a sample on github: https://github.com/simon-iversen/ncs_samples/tree/master/update_mcuboot_app_and_netcore 
 I can see that for instance your proj.conf is not equal to what is used in the nRF5340 sample 
 Kind regards, Andreas

nRF5340DK mcumgr image upload stalls at 0%

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