nRF51-ble-peripheral-bond-handling

RE: nRF51-ble-peripheral-bond-handling

Hung Bui — Fri, 30 Sep 2016 09:11:28 GMT

Hi Thierry,

Sorry that I was in a business trip so couldn't answer quickly. I'm back now.

Could you please edit your question and add the modified project that you are testing and the bootloader you used. So I can try here ? Also please test with the default example from SDK v10 or SDKv11 to check if the same issue happens ?

Could you step into the app_timer_start and check which call caused the hardfault, I don't see a reason why app timer can cause hardfault.

RE: nRF51-ble-peripheral-bond-handling

thischier — Thu, 29 Sep 2016 06:31:39 GMT

I've made several tests. I bonded the first smartphone and re-programmed my device. After launching the firmware, everything worked as expected. I repeated this procedure several times and after I've bonded the 6 smartphone, my device freezes after the upload of the firmware. I compiled the project with debug and got a hard fault error.

I added the call stack to this answer, but you can see that I get the hardfault when I start an app_timer...

RE: nRF51-ble-peripheral-bond-handling

Hung Bui — Wed, 28 Sep 2016 16:13:40 GMT

I see. Could you give more description about the issue, and what you find when you step into the code or add a breakpoint in the assertion handler ?

RE: nRF51-ble-peripheral-bond-handling

thischier — Tue, 27 Sep 2016 09:34:25 GMT

Hello there

I took this example (github.com/.../nRF51-ble-peripheral-bond-handling) and migrate everything to SDK10. As I said, the example works great, except when I do a DFU-OTA or when I have paired already the maximal amount of bonded device and I will reload the project inside the chip.

I'm aware of the reserved application data and this already changed and tested (When I remove the code from the above mentioned example and I upload a new firmware through nrfTool app, the device restart after the DFU and all already paired device connects without asking for a new passkey.)

RE: nRF51-ble-peripheral-bond-handling

Hung Bui — Tue, 27 Sep 2016 09:04:27 GMT

Hi Thierry,

Could you point out which example you used ? What was exactly the issue when you said "my device freezes afterwards". Could you step into the code in debug mode and figure out what cause problem ? You may want to follow this guide on how to do debugging.

Note that to reserve bond information data, you should declare reserved application data as explained here.