RE: Help in using FDS

kian79 — Fri, 07 Jul 2017 00:09:34 GMT

Thanks Martin for the description on how records are organised. I am however still having the same problem.

I am attaching my codes in the link here:

gist.github.com/.../ad87c11e4083fa028b7857305016c423

RE: Help in using FDS

MartinBL — Thu, 06 Jul 2017 15:43:20 GMT

Hi,

I think you might be confusing record keys and record IDs. Record keys identify records within a file. You can have two or more files, each containing one or more records with keys that might be identical to records in other files. Record IDs however, contain an ID that is globally unique for all records in all files. This field is computed by the system and should be invisible to the user. So even though you can access the record ID through the fds_record_desc_t structure you should never use it. The largest record ID is retrieved upon initialization and incremented automatically every time a record is written to flash (or updated). If a record is deleted its ID will not be used again.

I tried to reproduce your 5 steps, but it seemed to work fine for me. On the second read operation I read out the value from the second write operation. When I tested I used a global fds_record_desc_t descriptor.