DFU support for nRF52840 from a third party chipset

[siddharth_987]

Hi,

Is there any strategy/method or example of how to perform (non Nordic) MCU to (non Nordic) MCU firmware update via UART ? We want the non Nordic chip to do the firmware update for the nRF5280. The below links with the documentation only refers to conduct Firmware update from laptop to Nordic MCU. Kindly provide me with step by step approach if it is possible to do so.

https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu#mcetoc_1h90kc3pu5

https://webinars.nordicsemi.com/adding-device-firmware-update-5

[Amanda Hsieh]

Hi, 

Is there any strategy/method or example of how to perform (non Nordic) MCU to (non Nordic) MCU firmware update via UART ?

There is no such sample as your requirement. You have to implement SMP Client and SMP Server on the device to communicate via UART. 

The following are some relevant samples. Hope they can help. 

SMP Server Sample https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/README.html 

DFU over UART 

Bluetooth: Central SMP Client 

Regards,
Amanda H.

[siddharth_987]

Hi,

Thank you for your response. There is a small typing error in my query. Let me just rephrase it:

Is it possible to do Firmware Update for nRF52840 through UART pins from a (non Nordic) MCU that has the updated Firmware binary file ?

If so kindly suggest what method or procedure should we follow.

[Amanda Hsieh]

siddharth_987 said:

Is it possible to do Firmware Update for nRF52840 through UART pins from a (non Nordic) MCU that has the updated Firmware binary file ?

Yes, Check out this sample https://github.com/nrfconnect/sdk-nrf/tree/v2.6.1/samples/bluetooth/central_smp_client as reference.