DFU of nrf52832 + nRF Connect SDK 1.8.0

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user112081 — Fri, 20 May 2022 05:55:24 GMT

Sure, Simon. I will take a look at the case you mentioned and shall open a new ticket if required.

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user72692 — Thu, 19 May 2022 12:23:56 GMT

I'm actually discussing this in another ticket right now, take a look at it: https://devzone.nordicsemi.com/f/nordic-q-a/87944/dfu-ota-on-bl653dvk-with-external-flash-and-ble

However, if you have more question about setting up external flash for DFU updates, could you open a new ticket. Such that the initial question match the content of the ticket, and DevZone will be more organized.

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user112081 — Thu, 19 May 2022 09:19:28 GMT

Hi Simon,

We are now resuming our work with DFU on nRF52832. Our application size is greater than 250KB. And because of that when we enable the DFU support in code using the above steps (https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu ), our application fails to build.

We do have an external flash connected over SPI. Could you guide us on how can we use the external flash to store the upgrade image? We are planning to use BLE for the DFU update.

Thanks!

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user72692 — Wed, 04 May 2022 08:57:48 GMT

Sounds good. You can also modify the mcuboot size using a pm_static.yml file. Let me know if you encounter any issues

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user112081 — Tue, 03 May 2022 17:00:29 GMT

Hi Simon,

Thanks for getting back on this. We are yet to figure this out. We got off the course with few other stuff and we shall be resuming this soon.

We shall verify your suggestions very soon.

Thanks!

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user72692 — Mon, 02 May 2022 21:02:36 GMT

Hello embeddedER. Sorry for the delay, I have been gone for the last two months. Have you figured this out?

Try to increase the size allocated for MCUboot (run ninja partition_manager_report to see the allocated mcuboot space), maybe the mcuboot image has overflowed this size. Try increasing CONFIG_PM_PARTITION_SIZE_MCUBOOT like done in step 12 in this guide: https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/device-firmware-update-dfu-with-mcuboot-bootloader

Best regards,

Simon

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user112081 — Wed, 16 Mar 2022 17:42:14 GMT

Hi Simon,

Could you please check my response? What should be the max application size to support the DFU on nrf52832?

Is there a way we can utilize external flash (connected over SPI) for DFU?

Thanks!

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user112081 — Thu, 03 Mar 2022 18:53:16 GMT

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.

RE: DFU of nrf52832 + nRF Connect SDK 1.8.0

user72692 — Fri, 18 Feb 2022 11:10:46 GMT

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

Best regards,

Simon