Transferring a file (PDF,JPG,PNG, etc) from mobile to nRF52840

[whitlom]

I saw several threads that talked about this, but I could not decipher an exact answer, so apologies if this is a Re-Ask.

I recently purchased a nRF52840 Dongle with the hopes of using it to test file transfers from a mobile application to the Dongle. I am interested in transferring mostly image files and perhaps PDF's. Is this possible with the nRF Dongle, or do I need a full Development Kit. If so what are some starting steps. I have ported several of the SDK examples to the dongle, but nothing as involved as the File Transfer Demo that was recently blogged.

[ovrebekk]

Hi

In general the dongle can do whatever the DK can do, but it is not designed for extended development. 

If you are planning to develop your own code it is recommended to do the core development on the DK, and then deploy it to the dongle once the code is functional. 

Alternatively you can populate the P1 header on the dongle and connect it to the DK, so that you can program and debug the dongle directly. 

The reason for this is that it gets tedious very quickly to have to run a full USB DFU procedure every time you have made some changes to the code, and not having any means of debugging the application running on the dongle. 

Best regards
Torbjørn