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FDS - missing swap page

Wojciech Jasko

 Hi,

One of our devices is bricked due to the fds_init returning FDS_ERR_NO_PAGES. After flash analysis, I have discovered that all pages are marked as FDS_PAGE_DATA (no FDS_PAGE_SWAP). One of these pages is erased (just FDS_PAGE_TAG_MAGIC and FDS_PAGE_DATA header).

In our application, FDS is heavily used. During testing, we perform many power cycles. I do not have any clear reproduction path due to the fact that we found it just once (more than 200 devices online for a few months).

We are using SDK 14.2.0 with nRF52832 (custom board designs).

FDS flash dump can be found here: https://drive.google.com/drive/folders/1y_KOyIhVw9d-ZAAIc8SSa8k9vUOobDVz?usp=sharing

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    Hi,
    I started to patch fds last month as a result of these tests. These devices are not affected by my changes. I am pretty sure that your solution will work as a workaround. Anyway, there is still a bug somewhere. I am afraid that it may manifest itself in a different way (for example some operation on 0x0007D000 might be processed before reboot). In such case, this workaround will not be working.

    All records seem to be fine. Actually, I have erased this page using jlink and after reset device started to work. 

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  • 0

    Hi,
    I started to patch fds last month as a result of these tests. These devices are not affected by my changes. I am pretty sure that your solution will work as a workaround. Anyway, there is still a bug somewhere. I am afraid that it may manifest itself in a different way (for example some operation on 0x0007D000 might be processed before reboot). In such case, this workaround will not be working.

    All records seem to be fine. Actually, I have erased this page using jlink and after reset device started to work. 

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