Hello everyone,
I'm developing an application on the nRF52832 development kit. It is nrf52dk_nrf52832(PCA10040). It is based on Zephyr.
Zephyr version: 3.0.99
Zephyr SDK version: zephyr-sdk-0.13.2
This project is based on the example of Bluetooth Peripheral ("zephyr/samples/bluetooth/peripheral").
Now, I want to add a feature of DFU to update firmware using the nRFConnect application. My existing code is working fine without a boot loader (MCUBOOT). It uses 226Kb memory in FLASH.
Memory region Used Size Region Size %age Used
Memory region Used Size Region Size %age Used
FLASH: 226408 B 512 KB 43.18%
SRAM: 29744 B 64 KB 45.39%
IDT_LIST: 0 GB 2 KB 0.00%
When I enable MCUBOOT in prj.conf file, it failed to compile due to insufficient space in the FLASH memory segment. Please find the below log for reference.
Zephyr version: 3.0.99 (/home/user/zephyr_project/zephyr), build: zephyr-v3.0.0-1072-gc31cb0075ad1
[270/280] Linking C executable zephyr/zephyr_pre0.elf
FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map /home/user/zephyr_project/build/zephyr/zephyr_pre0.map
: && ccache /home/user/zephyr-sdk-0.13.2/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc zephyr/CMakeFiles/zephyr_pre0.dir/misc/empty_file.c.obj -o zephyr/zephyr_pre0.elf zephyr/CMakeFiles/offsets.dir/./arch/arm/core/offsets/offsets.c.obj -fuse-ld=bfd -Wl,-T zephyr/linker_zephyr_pre0.cmd -Wl,-Map=/home/user/zephyr_project/build/zephyr/zephyr_pre0.map -Wl,--whole-archive app/libapp.a zephyr/libzephyr.a zephyr/arch/common/libarch__common.a zephyr/arch/arch/arm/core/aarch32/libarch__arm__core__aarch32.a zephyr/arch/arch/arm/core/aarch32/cortex_m/libarch__arm__core__aarch32__cortex_m.a zephyr/arch/arch/arm/core/aarch32/mpu/libarch__arm__core__aarch32__mpu.a zephyr/lib/libc/newlib/liblib__libc__newlib.a zephyr/lib/posix/liblib__posix.a zephyr/soc/arm/common/cortex_m/libsoc__arm__common__cortex_m.a zephyr/soc/arm/nordic_nrf/nrf52/libsoc__arm__nordic_nrf__nrf52.a zephyr/subsys/bluetooth/common/libsubsys__bluetooth__common.a zephyr/subsys/bluetooth/host/libsubsys__bluetooth__host.a zephyr/subsys/bluetooth/controller/libsubsys__bluetooth__controller.a zephyr/subsys/mgmt/mcumgr/libsubsys__mgmt__mcumgr.a zephyr/subsys/dfu/boot/libsubsys__dfu__boot.a zephyr/subsys/net/libsubsys__net.a zephyr/subsys/random/libsubsys__random.a zephyr/drivers/clock_control/libdrivers__clock_control.a zephyr/drivers/console/libdrivers__console.a zephyr/drivers/gpio/libdrivers__gpio.a zephyr/drivers/i2c/libdrivers__i2c.a zephyr/drivers/pwm/libdrivers__pwm.a zephyr/drivers/sensor/nrf5/libdrivers__sensor__nrf5.a zephyr/drivers/flash/libdrivers__flash.a zephyr/drivers/serial/libdrivers__serial.a zephyr/drivers/entropy/libdrivers__entropy.a zephyr/drivers/timer/libdrivers__timer.a modules/hal_nordic/nrfx/libmodules__hal_nordic__nrfx.a modules/mcuboot/libmcuboot_util.a modules/segger/libmodules__segger.a modules/tinycbor/lib..__modules__lib__tinycbor__zephyr.a -Wl,--no-whole-archive zephyr/kernel/libkernel.a -L"/home/user/zephyr-sdk-0.13.2/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/thumb/v7e-m/nofp" -L/home/user/zephyr_project/build/zephyr -lgcc zephyr/arch/common/libisr_tables.a -no-pie -mcpu=cortex-m4 -mthumb -mabi=aapcs -mfp16-format=ieee -Wl,--gc-sections -Wl,--build-id=none -Wl,--sort-common=descending -Wl,--sort-section=alignment -Wl,-u,_OffsetAbsSyms -Wl,-u,_ConfigAbsSyms -nostdlib -static -Wl,-X -Wl,-N -Wl,--orphan-handling=warn -lm -Wl,-lc -L"/home/user/zephyr-sdk-0.13.2/arm-zephyr-eabi/arm-zephyr-eabi"/lib/thumb/v7e-m/nofp -Wl,-lgcc -lc -specs=nano.specs && cd /home/user/zephyr_project/build/zephyr && /usr/bin/cmake -E echo
/home/user/zephyr-sdk-0.13.2/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/zephyr_pre0.elf section `rodata' will not fit in region `FLASH'
/home/user/zephyr-sdk-0.13.2/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.bfd: region `FLASH' overflowed by 38128 bytes
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /usr/bin/cmake --build /home/user/zephyr_project/build
Please find my prj.config file for the reference.
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048 CONFIG_NFCT_PINS_AS_GPIOS=y CONFIG_BT=y CONFIG_BT_DEBUG_LOG=y CONFIG_BT_SMP=y CONFIG_BT_SIGNING=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_DIS=y CONFIG_BT_ATT_PREPARE_COUNT=5 CONFIG_NEWLIB_LIBC=y CONFIG_PWM=y CONFIG_BT_PRIVACY=y CONFIG_BT_DEVICE_NAME="Loop" CONFIG_BT_DEVICE_APPEARANCE=833 CONFIG_BT_DEVICE_NAME_DYNAMIC=y CONFIG_BT_DEVICE_NAME_MAX=65 CONFIG_BT_KEYS_OVERWRITE_OLDEST=y CONFIG_BT_SETTINGS=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_NVS=y CONFIG_SETTINGS=y CONFIG_HEAP_MEM_POOL_SIZE=256 CONFIG_ASSERT=y CONFIG_I2C=y CONFIG_STDOUT_CONSOLE=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_MPU_ALLOW_FLASH_WRITE=y CONFIG_SOC_FLASH_NRF_EMULATE_ONE_BYTE_WRITE_ACCESS=y CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y CONFIG_IMG_MANAGER=y CONFIG_MCUBOOT_IMG_MANAGER=y CONFIG_MCUMGR=y CONFIG_MCUMGR_CMD_IMG_MGMT=y CONFIG_MCUMGR_CMD_OS_MGMT=y CONFIG_BOOTLOADER_MCUBOOT=y CONFIG_MCUMGR_SMP_BT=y CONFIG_MCUMGR_SMP_BT_AUTHEN=n CONFIG_BT_L2CAP_TX_MTU=252 CONFIG_BT_BUF_ACL_RX_SIZE=256
Please find below the segment of FLASH from the nRF52832 DTS file.
&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 0x32000>;
};
slot1_partition: partition@3e000 {
label = "image-1";
reg = <0x0003E000 0x32000>;
};
scratch_partition: partition@70000 {
label = "image-scratch";
reg = <0x00070000 0xa000>;
};
storage_partition: partition@7a000 {
label = "storage";
reg = <0x0007a000 0x00006000>;
};
};
};
I want to add one last point here. When I am testing with Bluetooth example sample code, it could compile and I could perform the DFU. But with my project code which consumes more FLASH memory, I couldn't compile my project with MCUBOOT. Please suggest an alternate solution.
Kind Regards,
Neel
