Flash Write

[rajAsthana]

Hi,

I am trying to write a file in flash(nrf52840) at a particular address & after that i  want to instruct DFU module to start FW update from that address?

Is there any specific address to write the file in the flash?

How to instruct the DFU module to start firmware update from that specific address?

Thanks 

Raj

[tesc]

Hi,

Our DFU solution handles everything for downloading the new firmware image and updating it, and you can use it either with BLE over the air, or serial (UART or USB). With that, there is no need to write the file in flash manually before invoking the DFU bootloader.

What is the use case here, that means you want to write the firmware to flash manually and then do DFU from that?

Regards,
Terje

[rajAsthana]

Hi Terje,

yes you are right, my use case is to write the firmware to flash manually and then do DFU from that.

Please suggest how to proceed.

Thanks 

Raj

[tesc]

Hi,

I am trying to understand the reason for doing this manually. Do you need to download the new firmware in the background while the main application is still running?

If yes, then you can have a look at the background DFU library from SDK 16, or this DevZone thread: Background DFU application source code.

If not, then using our DFU bootloader with the desired transport layer would be the way to go. We have transport layers for BLE, UART and USB in the SDK, or you can add your own transport.

Regards,
Terje