Buttonless DFU with bonds

RE: Buttonless DFU with bonds

kurtovic — Fri, 02 Jun 2023 14:07:21 GMT

I ended up referencing ble_app_gls since it appeared to match more closely with my requirements (pairing and mitm with pseudo-static passkey).
Thanks again

RE: Buttonless DFU with bonds

Amanda Hsieh — Tue, 30 May 2023 18:52:21 GMT

Hi,

Since the ble_app_uart example doesn't support peer manager/bond, so you have to include the related files for peer manager.

[quote user="kurtovic"]I'm assuming I have to look into the ble_app_hrs example.[/quote]

ble_app_hrs is a good start which already includes the peer manager library.

If you do need encryption (bonding) when doing DFU, set NRF_DFU_BLE_REQUIRES_BONDS to 1 for the bootloader and set NRF_DFU_BLE_BUTTONLESS_SUPPORTS_BONDS to 1 in the application.

-Amanda H.

RE: Buttonless DFU with bonds

kurtovic — Wed, 24 May 2023 18:36:50 GMT

Thanks, following the procedure in the linked post helped me get to a point where I can compile and flash an application with buttonless DFU added in.

I'm trying to incorporate bonding now, but I'm getting an error when I enable NRF_DFU_BLE_REQUIRES_BONDS in the application which buttonless DFU was added into.

I'm assuming this is to be expected due to the change requiring additional code to be added. Is there an example which would be relevant to this?

This is a high level overview of what I'm trying to accomplish:

nrf52840 operates as peripheral and advertises
external MCU's scans for, and then establishes connection to found nrf52840's
have some form of security to reject unauthorized central connections, and encrypt communication
setup external MCU's as authorized devices to connect
incorporate secure DFU which only can be initiated by authorized MCU's

I've got steps 1, 2, and partially 5 working, but would like to have everything secured. Any advice on how to achieve steps 3&4 would be appreciated, I'm assuming I have to look into the ble_app_hrs example.

RE: Buttonless DFU with bonds

Amanda Hsieh — Mon, 22 May 2023 16:08:44 GMT

Hi,

I would suggest you take a look at this post on how to add buttonless_dfu to the application.

To enable or disable the support of bonds, modify the configuration parameters in the sdk_config file. For details on editing the SDK configurations, see SDK configuration header file.

sdk_config.h

#ifndef NRF_DFU_BLE_REQUIRES_BONDS
#define NRF_DFU_BLE_REQUIRES_BONDS 1
#endif

Regards,
Amanda H.

RE: Buttonless DFU with bonds

SwRa — Fri, 19 May 2023 11:48:10 GMT

Hello,

I am sorry, but we are short staffed this week due to Public Holidays in Norway. We will be back on Monday 22nd and hope to be able to answer all incoming requests within a couple of days, depending on the backlog. I am sorry for the inconvenience.

Best regards,

Swathy