nRF52 to nRF51 DFU

[Pedro]

Hi,

We have to implement a nRF to nRF DFU. On the nRF51 side a have an external memory with two bankers to perform secure update and downgrade using a bank 2. Now, we are planning to use a Nordic Thingy to perform the firmware update on those devices. Does Nordic has any example showing how to perform a nRF to nRF DFU?

[Hung Bui]

Unfortunately, we don't have an example showing DFU from nRF to nRF. You would need to base on the described protocol and implement the DFU master on the nRF on your own. You can have a look at the DFU library for Android or the nrfutil application as references.

Note that by default our bootloader doesn't support external memory.