nrf_desktop application can't off the b0 bootloader

[Hannibalhz]

Dear Nordic Engineers

Our customers use the nrf_desktop  application to develop their product.

 They use the NCS 2.0.0\nrf\applications\nrf_desktop and build project on the nrf52840dk_nrf52840.

It looks normal. The program can run.

They would like off the b0 bootloader. So I went to their company to help them.

I read this link:https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrf/applications/nrf_desktop/README.html

The bo bootloader can set the following configs to open/off the b0 bootloader.
CONFIG_SECURE_BOOT
CONFIG_BUILD_S1_VARIANT
CONFIG_FW_INFO
CONFIG_FW_INFO_FIRMWARE_VERSION
CONFIG_SB_SIGNING_KEY_FILE

So I off this config on nrf\applications\nrf_desktop\configuration\nrf52840dk_nrf52840\prj.conf.

I rebuilt the project and it reports some errors. I found that it needs off "CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE".

Then the project can be built.I downloaded the program to PCA10056(V1.0.0). The program can't run. 

I review nrf_desktop\configuration\nrf52840dk_nrf52840\prj.conf of NCS V1.9.1 and NCS V2.0.0. Their difference is the following configs.

CONFIG_SECURE_BOOT
CONFIG_BUILD_S1_VARIANT
CONFIG_FW_INFO
CONFIG_FW_INFO_FIRMWARE_VERSION
CONFIG_SB_SIGNING_KEY_FILE

CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE

Do I need off other config? Please give me some good suggestions.

Best regards.

[dejans]

Hi,

It should be possible to disable b0 bootloader by setting CONFIG_SECURE_BOOT=n. 

I rebuilt the project and it reports some errors.

Could you please show the error which you observed?

Best regards,
Dejan

[Hannibalhz]

Dear Dejans

The following log is  only setting CONFIG_SECURE_BOOT=n 

-- Found partition manager static configuration: E:/NCS/v2.0.0/nrf/applications/nrf_desktop/configuration/nrf52840dk_nrf52840/pm_static.yml
Partition 'settings_storage' is not included in the dynamic resolving since it is statically defined.
-- Configuring done
-- Generating done
-- Build files have been written to: E:/NCS/v2.0.0/nrf/applications/nrf_desktop/build_NRF52840
-- west build: building application
[1/302] Generating include/generated/version.h
-- Zephyr version: 3.0.99 (E:/NCS/v2.0.0/zephyr), build: v3.0.99-ncs1
[2/302] Generating misc/generated/syscalls.json, misc/generated/struct_tags.json
[3/302] Generating include/generated/kobj-types-enum.h, include/generated/otype-to-str.h, include/generated/otype-to-size.h
[4/302] Generating include/generated/driver-validation.h
[5/302] Generating include/generated/syscall_dispatch.c, include/generated/syscall_list.h
[6/302] Building C object zephyr/CMakeFiles/offsets.dir/arch/arm/core/offsets/offsets.c.obj
[7/302] Generating include/generated/offsets.h
[8/302] Building C object zephyr/CMakeFiles/zephyr.dir/lib/os/crc32c_sw.c.obj
[9/302] Building C object zephyr/CMakeFiles/zephyr.dir/lib/os/cbprintf.c.obj
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FAILED: CMakeFiles/app.dir/src/modules/dfu.c.obj
E:\NCS\toolchains\v2.0.0\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe -DEXT_API_MAGIC=0x281ee6de,0xb845acea,13314 -DFIRMWARE_INFO_MAGIC=0x281ee6de,0x8fcebb4c,13314 -DKERNEL -DNRF52840_XXAA -DUSE_PARTITION_MANAGER=1 -D_FORTIFY_SOURCE=2 -D__PROGRAM_START -D__ZEPHYR__=1 -I../src/events -I../src/util -IE:/NCS/v2.0.0/nrf/drivers/mpsl/clock_control -IE:/NCS/v2.0.0/zephyr/include/zephyr -IE:/NCS/v2.0.0/zephyr/include -Izephyr/include/generated -IE:/NCS/v2.0.0/zephyr/soc/arm/nordic_nrf/nrf52 -IE:/NCS/v2.0.0/zephyr/soc/arm/nordic_nrf/common/. -IE:/NCS/v2.0.0/zephyr/subsys/bluetooth -IE:/NCS/v2.0.0/zephyr/subsys/usb/device -IE:/NCS/v2.0.0/zephyr/subsys/settings/include -IE:/NCS/v2.0.0/nrf/include -IE:/NCS/v2.0.0/nrf/lib/multithreading_lock/. -IE:/NCS/v2.0.0/nrf/subsys/bluetooth/controller/. -IE:/NCS/v2.0.0/nrf/subsys/app_event_manager/. -IE:/NCS/v2.0.0/nrf/subsys/app_event_manager_profiler_tracer/. -IE:/NCS/v2.0.0/zephyr/drivers/flash -IE:/NCS/v2.0.0/modules/hal/cmsis/CMSIS/Core/Include -IE:/NCS/v2.0.0/modules/hal/nordic/nrfx -IE:/NCS/v2.0.0/modules/hal/nordic/nrfx/drivers/include -IE:/NCS/v2.0.0/modules/hal/nordic/nrfx/mdk -IE:/NCS/v2.0.0/zephyr/modules/hal_nordic/nrfx/. -IE:/NCS/v2.0.0/modules/debug/segger/SEGGER -IE:/NCS/v2.0.0/modules/debug/segger/Config -IE:/NCS/v2.0.0/zephyr/modules/segger/. -IE:/NCS/v2.0.0/modules/crypto/tinycrypt/lib/include -IE:/NCS/v2.0.0/nrfxlib/mpsl/include -IE:/NCS/v2.0.0/nrfxlib/mpsl/include/protocol -I../configuration/common -I../configuration/nrf52840dk_nrf52840 -IE:/NCS/v2.0.0/nrfxlib/softdevice_controller/include -isystem E:/NCS/v2.0.0/zephyr/lib/libc/minimal/include -isystem e:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/include -isystem e:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/include-fixed -isystem E:/NCS/v2.0.0/nrfxlib/crypto/nrf_cc310_platform/include -O2 -imacros E:/NCS/v2.0.0/nrf/applications/nrf_desktop/build_NRF52840/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m4 -mthumb -mabi=aapcs -mfp16-format=ieee -imacros E:/NCS/v2.0.0/zephyr/include/zephyr/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=E:/NCS/v2.0.0/nrf/applications/nrf_desktop=CMAKE_SOURCE_DIR -fmacro-prefix-map=E:/NCS/v2.0.0/zephyr=ZEPHYR_BASE -fmacro-prefix-map=E:/NCS/v2.0.0=WEST_TOPDIR -ffunction-sections -fdata-sections -std=c99 -nostdinc -MD -MT CMakeFiles/app.dir/src/modules/dfu.c.obj -MF CMakeFiles\app.dir\src\modules\dfu.c.obj.d -o CMakeFiles/app.dir/src/modules/dfu.c.obj -c ../src/modules/dfu.c
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:67:3: error: #error Bootloader not supported.
67 | #error Bootloader not supported.
| ^~~~~
In file included from E:\NCS\v2.0.0\zephyr\include\zephyr\toolchain.h:50,
from E:\NCS\v2.0.0\zephyr\include\zephyr\sys\__assert.h:11,
from E:\NCS\v2.0.0\zephyr\include\zephyr\sys\byteorder.h:16,
from e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:10:
../src/modules/dfu.c: In function 'dfu_slot_id':
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:113:15: error: 'IMAGE0_ADDRESS' undeclared (first use in this function); did you mean 'PM_B0_ADDRESS'?
113 | BUILD_ASSERT(IMAGE0_ADDRESS < IMAGE1_ADDRESS);
| ^~~~~~~~~~~~~~
E:\NCS\v2.0.0\zephyr\include\zephyr\toolchain\gcc.h:77:51: note: in definition of macro 'BUILD_ASSERT'
77 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
| ^~~~
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:113:15: note: each undeclared identifier is reported only once for each function it appears in
113 | BUILD_ASSERT(IMAGE0_ADDRESS < IMAGE1_ADDRESS);
| ^~~~~~~~~~~~~~
E:\NCS\v2.0.0\zephyr\include\zephyr\toolchain\gcc.h:77:51: note: in definition of macro 'BUILD_ASSERT'
77 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
| ^~~~
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:113:32: error: 'IMAGE1_ADDRESS' undeclared (first use in this function); did you mean 'PM_S1_ADDRESS'?
113 | BUILD_ASSERT(IMAGE0_ADDRESS < IMAGE1_ADDRESS);
| ^~~~~~~~~~~~~~
E:\NCS\v2.0.0\zephyr\include\zephyr\toolchain\gcc.h:77:51: note: in definition of macro 'BUILD_ASSERT'
77 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
| ^~~~
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:113:15: error: expression in static assertion is not an integer
113 | BUILD_ASSERT(IMAGE0_ADDRESS < IMAGE1_ADDRESS);
| ^~~~~~~~~~~~~~
E:\NCS\v2.0.0\zephyr\include\zephyr\toolchain\gcc.h:77:51: note: in definition of macro 'BUILD_ASSERT'
77 | #define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
| ^~~~
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:115:10: error: 'IMAGE1_ID' undeclared (first use in this function)
115 | return IMAGE1_ID;
| ^~~~~~~~~
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:118:9: error: 'IMAGE0_ID' undeclared (first use in this function)
118 | return IMAGE0_ID;
| ^~~~~~~~~
../src/modules/dfu.c: In function 'handle_dfu_bootloader_variant':
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:502:17: error: 'BOOTLOADER_NAME' undeclared (first use in this function)
502 | *size = strlen(BOOTLOADER_NAME);
| ^~~~~~~~~~~~~~~
../src/modules/dfu.c: In function 'fetch_config':
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:663:3: warning: implicit declaration of function 'handle_image_info_request'; did you mean 'handle_reboot_request'? [-Wimplicit-function-declaration]
663 | handle_image_info_request(data, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
| handle_reboot_request
../src/modules/dfu.c: In function 'dfu_slot_id':
e:\NCS\v2.0.0\nrf\applications\nrf_desktop\src\modules\dfu.c:120:1: warning: control reaches end of non-void function [-Wreturn-type]
120 | }
| ^
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ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'e:\NCS\toolchains\v2.0.0\opt\bin\cmake.EXE' --build 'e:\NCS\v2.0.0\nrf\applications\nrf_desktop\build_NRF52840'
终端进程已终止，退出代码: 1。

The following code is my prj.conf setting.

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

CONFIG_DESKTOP_INIT_LOG_MOTION_EVENT=n
CONFIG_DESKTOP_INIT_LOG_HID_REPORT_EVENT=n
CONFIG_DESKTOP_INIT_LOG_HID_REPORT_SENT_EVENT=n
CONFIG_CAF_INIT_LOG_KEEP_ALIVE_EVENTS=n

CONFIG_DESKTOP_HID_REPORT_DESC="configuration/common/hid_report_desc.c"

CONFIG_DESKTOP_HID_MOUSE=y
CONFIG_DESKTOP_HID_STATE_ENABLE=y
CONFIG_DESKTOP_HID_BOOT_INTERFACE_MOUSE=y

CONFIG_DESKTOP_MOTION_BUTTONS_ENABLE=y
CONFIG_DESKTOP_MOTION_UP_KEY_ID=0
CONFIG_DESKTOP_MOTION_DOWN_KEY_ID=3
CONFIG_DESKTOP_MOTION_LEFT_KEY_ID=2
CONFIG_DESKTOP_MOTION_RIGHT_KEY_ID=1

CONFIG_CAF=y
CONFIG_CAF_PM_EVENTS=y
CONFIG_CAF_POWER_MANAGER=y

CONFIG_CAF_BUTTONS=y
CONFIG_CAF_BUTTONS_POLARITY_INVERSED=y
CONFIG_CAF_BUTTONS_PM_KEEP_ALIVE=n

CONFIG_CAF_CLICK_DETECTOR=y

CONFIG_CAF_LEDS=y

CONFIG_CAF_BLE_STATE=y
CONFIG_DESKTOP_BLE_BOND_ENABLE=y

CONFIG_CAF_BLE_ADV=y
CONFIG_CAF_BLE_ADV_DIRECT_ADV=n
CONFIG_CAF_BLE_ADV_FAST_ADV=y
CONFIG_CAF_BLE_ADV_SWIFT_PAIR=y

CONFIG_CAF_SETTINGS_LOADER=y

CONFIG_DESKTOP_USB_ENABLE=y

CONFIG_DESKTOP_BLE_USE_DEFAULT_ID=y

CONFIG_DESKTOP_BLE_PEER_CONTROL=y
CONFIG_DESKTOP_BLE_PEER_CONTROL_BUTTON=0x0000
CONFIG_DESKTOP_BLE_PEER_ERASE_ON_START=y

CONFIG_DESKTOP_BLE_SECURITY_FAIL_TIMEOUT_S=10
CONFIG_DESKTOP_BLE_LOW_LATENCY_LOCK=y

CONFIG_DESKTOP_CONFIG_CHANNEL_ENABLE=y
CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=y

CONFIG_DESKTOP_HFCLK_LOCK_ENABLE=y

################################################################################
# Zephyr Configuration

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=1536
CONFIG_ISR_STACK_SIZE=1536
CONFIG_MAIN_STACK_SIZE=768
CONFIG_BT_RX_STACK_SIZE=2048
CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
CONFIG_BT_HCI_TX_STACK_SIZE=1536

CONFIG_BOOT_BANNER=n

CONFIG_NUM_COOP_PRIORITIES=10
CONFIG_NUM_PREEMPT_PRIORITIES=11

CONFIG_HEAP_MEM_POOL_SIZE=512

CONFIG_SYS_CLOCK_TICKS_PER_SEC=1000
CONFIG_SYSTEM_CLOCK_NO_WAIT=y

CONFIG_PM_POLICY_CUSTOM=y

CONFIG_HW_STACK_PROTECTION=y
CONFIG_RESET_ON_FATAL_ERROR=n

CONFIG_GPIO=y

CONFIG_SERIAL=n
CONFIG_CONSOLE=n
CONFIG_UART_CONSOLE=n

CONFIG_HWINFO=y

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

CONFIG_SETTINGS=y
CONFIG_SETTINGS_NVS=y

CONFIG_REBOOT=y

CONFIG_SPEED_OPTIMIZATIONS=y

CONFIG_PWM=y

CONFIG_LED=y
CONFIG_LED_PWM=y

CONFIG_USB_NRFX=y
CONFIG_USB_DEVICE_STACK=y
CONFIG_USB_DEVICE_MANUFACTURER="Nordic Semiconductor ASA"
CONFIG_USB_DEVICE_PRODUCT="Mouse nRF52 Desktop"
CONFIG_USB_DEVICE_VID=0x1915
CONFIG_USB_DEVICE_PID=0x52DE
CONFIG_USB_DEVICE_REMOTE_WAKEUP=y
CONFIG_USB_DEVICE_HID=y
CONFIG_USB_DEVICE_LOG_LEVEL_OFF=y
CONFIG_USB_DRIVER_LOG_LEVEL_OFF=y
CONFIG_USB_HID_POLL_INTERVAL_MS=1
CONFIG_USB_HID_BOOT_PROTOCOL=y
CONFIG_USB_HID_PROTOCOL_CODE=2

CONFIG_BT=y
CONFIG_BT_SETTINGS=y
CONFIG_BT_SMP=y
CONFIG_BT_SIGNING=y
CONFIG_BT_MAX_PAIRED=2
CONFIG_BT_ID_MAX=3
CONFIG_BT_LL_SOFTDEVICE=y

CONFIG_BT_DEVICE_NAME="Mouse nRF52 Desktop"
CONFIG_BT_DEVICE_APPEARANCE=962

CONFIG_BT_CTLR=y
CONFIG_BT_CTLR_CONN_PARAM_REQ=n
CONFIG_BT_CTLR_SDC_LLPM=y
CONFIG_BT_CTLR_TX_PWR_0=y
CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y
CONFIG_BT_CONN_TX_MAX=4

CONFIG_BT_DATA_LEN_UPDATE=n
CONFIG_BT_AUTO_PHY_UPDATE=n

CONFIG_BT_PERIPHERAL=y
CONFIG_BT_PERIPHERAL_PREF_MIN_INT=6
CONFIG_BT_PERIPHERAL_PREF_MAX_INT=6
CONFIG_BT_PERIPHERAL_PREF_LATENCY=99
CONFIG_BT_PERIPHERAL_PREF_TIMEOUT=400

CONFIG_BT_CONN_PARAM_UPDATE_TIMEOUT=1000

CONFIG_BT_FILTER_ACCEPT_LIST=y

CONFIG_BT_GATT_UUID16_POOL_SIZE=27
CONFIG_BT_GATT_CHRC_POOL_SIZE=7
CONFIG_BT_SETTINGS_CCC_STORE_ON_WRITE=y
CONFIG_BT_SETTINGS_CCC_LAZY_LOADING=n

CONFIG_BT_DIS=y
CONFIG_BT_DIS_MANUF="Nordic Semiconductor ASA"
CONFIG_BT_DIS_MODEL="Mouse nRF52 Desktop"
CONFIG_BT_DIS_PNP=y
CONFIG_BT_DIS_PNP_VID_SRC=2
CONFIG_BT_DIS_PNP_VID=0x1915
CONFIG_BT_DIS_PNP_PID=0x52DE
CONFIG_BT_DIS_PNP_VER=0x0100

CONFIG_BT_HIDS_INPUT_REP_MAX=1
CONFIG_BT_HIDS_OUTPUT_REP_MAX=0
CONFIG_BT_HIDS_FEATURE_REP_MAX=1
CONFIG_BT_HIDS_ATTR_MAX=19
CONFIG_BT_HIDS_DEFAULT_PERM_RW_ENCRYPT=y
CONFIG_BT_CONN_CTX=y

CONFIG_ENTROPY_CC3XX=n

CONFIG_APP_EVENT_MANAGER=y

################################################################################

CONFIG_ASSERT=y
CONFIG_ASSERT_LEVEL=2

CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=2
CONFIG_LOG_BACKEND_RTT=y
CONFIG_LOG_BACKEND_RTT_MODE_DROP=y
CONFIG_LOG_MODE_OVERFLOW=y
CONFIG_LOG_PRINTK=y
CONFIG_LOG_BUFFER_SIZE=4096
CONFIG_LOG_BACKEND_RTT_MESSAGE_SIZE=256
CONFIG_LOG_BACKEND_SHOW_COLOR=n
CONFIG_LOG_BACKEND_FORMAT_TIMESTAMP=n
CONFIG_LOG_PROCESS_THREAD_STACK_SIZE=1024

CONFIG_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=4096
CONFIG_RTT_CONSOLE=y
CONFIG_UART_CONSOLE=n

################################################################################
# Bootloader Configuration

CONFIG_SECURE_BOOT=n
CONFIG_BUILD_S1_VARIANT=y
CONFIG_FW_INFO=y
CONFIG_FW_INFO_FIRMWARE_VERSION=1
CONFIG_SB_SIGNING_KEY_FILE="configuration/nrf52840dk_nrf52840/b0_private.pem"

[Hannibalhz]

Dear Dejans

This file is my nrf_deskop.

I only change two config,they are CONFIG_SECURE_BOOT=n” and “CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=n

You can review nrf_desktop\build_nrf52840\zephyr\.config and nrf_desktop\configuration\nrf52840dk_nrf52840\prj.conf.

Best regards.

[dejans]

Hi,

I have tried your provided sample nrf_desktop.zip. I have noticed the presence of -DBOARD_ROOT:STRING="e:/NCS/my_samples/serial_lte_modem" and app.overlay. In addition, your prj.conf has had CONFIG_SECURE_BOOT=n, but does not have CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=n. Is there any reason for this?
When I flashed your project, LEDs were not turned on.

I have also tried your merged1.hex and merged2.hex. Merged1.hex does turn LED1 ON and LED2 ON/OFF, but merged2.hex does not turn ON any LEDs.

Best regards,
Dejan

[Hannibalhz]

Dear Dejans

1. You can delete my build files and rebuild a new build project for nrf52840dk.

2. "CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE" is a default config of nrf_desktop.

Its default config is "CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=y".

So you should look for it to prj.conf's line 60.

3. Yes, merged2.hex does not turn ON any LEDs and you can't use phone or PC's bluetooth scan advertising of DK.

I tried to three PCs to build and test nrf_desktop for this problem. This problem reappears every time.

So I think this problem is a bug of NCS 2.0.0.

4. You can use your PC and PCA10056(v1.0.0) to copy this way.

You only close "CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE" and "CONFIG_SECURE_BOOT" in your prj.conf of nrf_desktop.

Then build the project and download program to PCA10056(v1.0.0).

This problem will recurrence.

Best regards.

[dejans]

Hi,

I have tested the nrf_desktop sample again. I observed as well the LEDs behavior and I could reproduce the sttus of the LEDs. With relevant two options (CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE and CONFIG_SECURE_BOOT) enabled, LEDs are turned ON, but with two options disabled LEDs are not turned ON. This is expected as shown in the LED stream module configuration. CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=n disables LEDs.

Best regards,
Dejan

[Hannibalhz]

Dear Dejans

If set  "CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=n" and "CONFIG_SECURE_BOOT=y",the project will not be build.

And close "CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE",the program will not have advertising.

So how to close b0 bootloader?

Best regards.

[dejans]

Hi,

The advertising should not be affected.

Can you verify that you will not have advertising when you turn off b0 bootloader?

Best regards,
Dejan

[Hannibalhz]

Dear Dejans

Yes,you can download merged2.hex to your PCA10056 and use your phone's bluetooth to scan advertising.I tried more times, it can't not found the advertising of DK.

Best regards. 

[dejans]

Hi,

I have reproduced the issue. In order to fix it, you would need to make several configuration changes.

From the original prj.conf, you should remove all lines related to bootloader configuration

CONFIG_SECURE_BOOT=y
CONFIG_BUILD_S1_VARIANT=y
CONFIG_FW_INFO=y
CONFIG_FW_INFO_FIRMWARE_VERSION=1
CONFIG_SB_SIGNING_KEY_FILE="configuration/nrf52840dk_nrf52840/b0_private.pem"

Additionally, from pm_static.yml you should remove everything except settings_storage section.

Best regards,
Dejan

[Hannibalhz]

Dear Dejans

Thank you for your good suggestion. I tested it,and it took effect.

But it can't delete everything except the settings_storage section. Because the WINDOWS will not find the advertising.

It only needs to delete B0 and S0 page setting.

 

The following file is my pm_static.yml.I hope it can help other people.

pm_static.7z

Best regards.