DFU on nrf52832

[Moh]

Hi, I am having problem making DFU work on nrf52832 using nrf connect sdk 2.6.0.  Below is my mcuboot.conf under child_image and prj.conf. Please guide me where I am wrong. Also when I set CONFIG_SINGLE_APPLICATION_SLOT, it builds fine but when I disables it, it doesn't build due to size issue.

&flash0 {

partitions {

compatible = "fixed-partitions";

#address-cells = <1>;

#size-cells = <1>;

boot_partition: partition@0 {

label = "mcuboot";

reg = <0x00000000 0xC000>;

};

slot0_partition: partition@C000 {

label = "image-0";

reg = <0x0000C000 0x2C000>;

};

slot1_partition: partition@38000 {

label = "image-1";

reg = <0x00038000 0x2C000>;

};

storage_partition: partition@64000 {

label = "storage";

reg = <0x00064000 0x4000>;

};

};

};

# Logging

CONFIG_LOG=y

CONFIG_MCUBOOT_LOG_LEVEL_WRN=y

# CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x15000

CONFIG_SINGLE_APPLICATION_SLOT=y

and prj.conf

#

# Copyright (C) 2024 Walk With Path Corp. All Rights Reserved.

# Project Configuration File

#

# This file contains configuration settings for Bluetooth, logging, peripherals,

# memory optimization, DFU support, and other key features for Zephyr-based applications.

#

# ==============================

# General Debugging and Logging

# ==============================

CONFIG_LOG=y # Enable logging framework

CONFIG_LOG_BACKEND_UART=y # Use UART backend for logs

CONFIG_LOG_PRINTK=y # Allow printk for logs

CONFIG_CBPRINTF_FP_SUPPORT=y # Enable floating-point support in logs

# Enable console for debug purposes

CONFIG_CONSOLE=y

CONFIG_UART_CONSOLE=y

CONFIG_DEBUG=y # Enable debugging

CONFIG_PRINTK=y # Enable printk debugging

CONFIG_SHELL=n # Enable Zephyr Shell for debugging

CONFIG_SHELL_LOG_BACKEND=y

CONFIG_SHELL_CMD_BUFF_SIZE=128

# Enable RTT (Real-Time Transfer) for logs (alternative to UART)

CONFIG_USE_SEGGER_RTT=y

CONFIG_LOG_BACKEND_RTT=y

CONFIG_RTT_CONSOLE=y

CONFIG_UART_CONSOLE=y # Disable UART console if RTT is enabled

CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=512

CONFIG_SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL=y

CONFIG_LOG_BLOCK_IN_THREAD=y

CONFIG_LOG_BUFFER_SIZE=256

CONFIG_DEBUG=y # Enable debugging

CONFIG_DEBUG_INFO=y

CONFIG_DEBUG_THREAD_INFO=y

# CONFIG_NCS_BOOT_BANNER=y # Enable NCS boot banner

CONFIG_BOOT_BANNER=y

CONFIG_PRINTK=y

# Enable UART support

CONFIG_SERIAL=y

# ==============================

# Peripheral and Sensor Drivers

# ==============================

CONFIG_I2C=y # Enable I2C interface

CONFIG_SPI=y # Enable SPI interface

CONFIG_ADC=y # Enable ADC driver

CONFIG_SENSOR=y # Enable generic sensor support

CONFIG_TMP116=y # Enable TMP116 temperature sensor

CONFIG_BMI270=y # Enable BMI270 accelerometer

CONFIG_BMI270_TRIGGER_GLOBAL_THREAD=y

CONFIG_WATCHDOG=y # Enable watchdog timer

CONFIG_WDT_LOG_LEVEL_DBG=y

CONFIG_WDT_DISABLE_AT_BOOT=n

# Enable LED and regulator drivers

CONFIG_LED=y

CONFIG_REGULATOR=y

# Enable power management IC (NPMX)

# CONFIG_NPMX=y

# CONFIG_NPMX_DEVICE_NPM1300=y

# Enable Nordic Fuel Gauge and BMI270 (Accelerometer and Gyroscope)

CONFIG_NRF_FUEL_GAUGE=y

# Disable SPI NOR flash driver (if not used)

CONFIG_SPI_NOR=n

# ==============================

# Power and Memory Optimizations

# ==============================

# Power management configuration

CONFIG_PM_DEVICE=y

CONFIG_PM_DEVICE_RUNTIME=y

# ==============================

# Memory Optimizations

# ==============================

# Configure memory pool and stack sizes

CONFIG_MAIN_STACK_SIZE=2048

CONFIG_HEAP_MEM_POOL_SIZE=1024

# ==============================

# Flash Configuration

# ==============================

CONFIG_FLASH=y # Enable flash memory support

CONFIG_FLASH_PAGE_LAYOUT=y

CONFIG_FLASH_MAP=y

CONFIG_MPU_ALLOW_FLASH_WRITE=y

CONFIG_BT_SETTINGS=y # Enable Bluetooth settings

CONFIG_SETTINGS=y # Enable settings subsystem

CONFIG_NVS=y # Enable Non-Volatile Storage

CONFIG_NVS_LOG_LEVEL_DBG=y

# ==============================

# Bluetooth Settings

# ==============================

CONFIG_NCS_SAMPLES_DEFAULTS=y

# Enable Bluetooth and controller settings

CONFIG_BT=y

CONFIG_BT_HCI=y

CONFIG_BT_CTLR=y

CONFIG_BT_PERIPHERAL=y

CONFIG_BT_BROADCASTER=n

CONFIG_BT_SMP=y

CONFIG_BT_BONDABLE=y

CONFIG_BT_CTLR_ADV_EXT=n

CONFIG_BT_DEVICE_APPEARANCE=1345

CONFIG_BT_DEVICE_NAME_DYNAMIC=y

CONFIG_BT_GATT_CLIENT=y

# Bluetooth security and bonding settings

CONFIG_BT_KEYS_OVERWRITE_OLDEST=y

CONFIG_BT_SMP_ALLOW_UNAUTH_OVERWRITE=y

CONFIG_BT_ID_UNPAIR_MATCHING_BONDS=y

CONFIG_BT_PRIVACY=n

CONFIG_BT_TINYCRYPT_ECC=y

CONFIG_BT_CTLR_PHY_2M=y

CONFIG_BT_USER_PHY_UPDATE=y

# Bluetooth buffer and connection settings

CONFIG_BT_BUF_ACL_RX_SIZE=247

CONFIG_BT_ATT_PREPARE_COUNT=2

CONFIG_BT_BUF_ACL_TX_SIZE=256

CONFIG_BT_BUF_ACL_TX_COUNT=10

CONFIG_BT_L2CAP_TX_MTU=247

CONFIG_BT_L2CAP_TX_BUF_COUNT=10

CONFIG_BT_L2CAP_DYNAMIC_CHANNEL=y

CONFIG_BT_CTLR_DATA_LENGTH_MAX=247

CONFIG_BT_CTLR_RX_BUFFERS=2

CONFIG_BT_CONN_TX_MAX=10

CONFIG_BT_GAP_AUTO_UPDATE_CONN_PARAMS=n

CONFIG_BT_GATT_DM=y

# Allow only LESC pairing

# CONFIG_BT_SMP_SC_PAIR_ONLY=y

# Configure Bluetooth connection settings

CONFIG_BT_CTLR_TX_PWR_0=y

CONFIG_BT_MAX_CONN=1

CONFIG_BT_MAX_PAIRED=1

# Enable PHY updates

CONFIG_BT_USER_PHY_UPDATE=y

CONFIG_BT_USER_DATA_LEN_UPDATE=y

# Enable Bluetooth shell for debugging

CONFIG_BT_SHELL=n

# Enable BT NUS (Nordic UART Service) shell for testing

# CONFIG_SHELL_BT_NUS=y

# Enable Battery Service (BAS) for battery level reporting

CONFIG_BT_BAS=y

# ==============================

# Cryptography

# ==============================

CONFIG_TINYCRYPT=y # Enable TinyCrypt for secure operations

CONFIG_BT_TINYCRYPT_ECC=y

# ==============================

# Reboot and Misc Settings

# ==============================

CONFIG_REBOOT=y # Enable reboot functionality

# ==============================

# DFU Support and Bootloader

# ==============================

# Enable mcumgr.

CONFIG_MCUMGR=y

# Enable MCUboot and FOTA

CONFIG_BOOTLOADER_MCUBOOT=y

# CONFIG_MCUBOOT_SIGNATURE_KEY_FILE="bootloader/mcuboot/root-rsa-2048.pem"

CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU=y

CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU_SPEEDUP=y

# Enable image management

CONFIG_MCUMGR_TRANSPORT_BT=y

CONFIG_MCUMGR_TRANSPORT_BT_AUTHEN=n

CONFIG_MCUMGR_TRANSPORT_BT_CONN_PARAM_CONTROL=y

CONFIG_IMG_MANAGER=n

CONFIG_MCUBOOT_IMG_MANAGER=y

CONFIG_IMG_ERASE_PROGRESSIVELY=y

# Enable logging for mcumgr (DFU)

CONFIG_MCUMGR_LOG_LEVEL_DBG=y

CONFIG_MCUMGR_LOG_LEVEL_INF=y

# Enable logging for image management subsystem

CONFIG_IMG_MANAGER_LOG_LEVEL_DBG=y

CONFIG_IMG_MANAGER_LOG_LEVEL_INF=y

# # Enable mcumgr DFU in application

# # Enable MCUMGR

# # Enable MCUMGR management for both OS and Images

# CONFIG_MCUMGR_GRP_OS=y

# CONFIG_MCUMGR_GRP_IMG=y

# Support for taskstat command

CONFIG_MCUMGR_GRP_OS_TASKSTAT=y

# Enable statistics and statistic names.

CONFIG_STATS=y

CONFIG_STATS_NAMES=y

# Enable most core commands.

CONFIG_MCUMGR_GRP_IMG=y

CONFIG_MCUMGR_GRP_OS=y

CONFIG_MCUMGR_GRP_STAT=y

[AHaug]

Hi,

I recommend you to have a look at this lesson in the intermediate course about bootloaders and DFU https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/ 

In short what happens when you don't use CONFIG_SINGLE_APPLICATION_SLOT is that you're using a dual bank DFU, meaning that you cut your available application space in half since you have two application slots. On the first slot, you have your running application, while on the second slot you will temporary store the update image whenever you perform an update.

This is explained in closer detail in the theory sections before the exercises.

Let me know if this answers your questions.

Kind regards,
Andreas

[Moh]

Can I have CONFIG_SINGLE_APPLICATION_SLOT DFU over BLE? 

[AHaug]

Hi,

Unfortunately no. Single bank FOTA (over BLE and other) is currently not supported in NCS, but I recommend that you reach out to your regional sales manager and put raise this as a feature request. I've also added this internally as a request for single bank BLE FOTA in NCS.

Kind regards,
Andreas

[Moh]

Hi Andreas, How I can reach out to UK regional sales manager? Can you share contact information? Thanks Moh

[AHaug]

Hi,

You can reach them through email at [email protected]

Kind regards,
Andreas