DFU example code as master

[roger.k]

Hi. I'm using nRF52832, SDK13.0.0. I'm developing not only peripheral side but also central side.

I already made peripheral side referring to DFU example code. But i don't know how can I make the code for mater. So I want to know how to DFU using nRF52832 as central.

Do you have any sample code for this? or any recommandation?

I need your help.

[Hung Bui]

Hi Roger,

Unfortunately, we don't have an example for that. You might need to follow the documentation on the DFU protocol to perform a DFU update. You can refer to our DFU library on Android to get started.

We have an example for DFU host but it's for Legacy DFU and it's for SPI.

[roger.k]

Thank you so much for your help. Unfortunately I don't know Android or Java code. So I want the guide documents for the principle of OTA master if there is no example code. The documents i want could contain charateristics information and timing or communication chart, how to start communication, how to exchange data and so on. Can I get the documents for these?

[Hung Bui]

The only source of documentation we have for now is on info center. You can have a look here. It defines the opcode and the message sequence chart you can follow.

I would suggest you get hold of a sniffer trace when you use the DFU app on the phone or PC to perform a DFU update. You can use this sniffer trace as the reference to create your own DFU master.

[roger.k]

Thank you very much for your help.

[Hung Bui]

Code for doing DFU from a nRF5x to a nRF5x via UART/SPI can be found at appendix 5 in this blog.