DFU of nrf52832 + nRF Connect SDK 1.8.0

[embeddedER]

Hello,

We are working on NRF52832 + nRF Connect SDK 1.8.0 for our upcoming product. We need to do OTA of our Firmware.

Could you please help with pointing to the right direction (document/sample) for OTA of Firmware using BLE interface?

Thanks.

[Simon]

Check out the following: https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu 

Best regards,

Simon

[embeddedER]

Thanks, Simon. I am trying to use above guide with nRF52832. I've chip with 512KB of Flash and 64KB of SRAM.

I am using nRF Connect SDK 1.8.0.

When I enable DFU support on my application, using the same steps. I see there is a linking error in the build:

c:/ncs/v1.8.0/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: zephyr\zephyr_prebuilt.elf section `text' will not fit in region `FLASH'
c:/ncs/v1.8.0/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: region `FLASH' overflowed by 36896 bytes

Memory region displayed in build is:

Memory region         Used Size  Region Size  %age Used
           FLASH:       34448 B        48 KB     70.08%
            SRAM:       23744 B        64 KB     36.23%
        IDT_LIST:          0 GB         2 KB      0.00%

I don't understand why the Flash region size is showing as 48 KB here?

When I remove this DFU changes and build my application I see proper size in build:

Memory region         Used Size  Region Size  %age Used
           FLASH:      252508 B       512 KB     48.16%
            SRAM:       32252 B        64 KB     49.21%
        IDT_LIST:          0 GB         2 KB      0.00%

Am I missing something here?

All I am trying to do here is running peripheral_lbs example with DFU on nRF52832. Do I need any changes in example plus above steps to do so?

Thanks.