Using FDS to save a Struct (Structure) and also reading it

RE: Using FDS to save a Struct (Structure) and also reading it

Ameer Usman — Tue, 03 Dec 2019 12:41:59 GMT

This worked perfectly:

__ALIGN(4) beacon_packet_struct   beacon_flags;

Also the error of 0x02 I had was solved by putting a nrf_delay_ms(300); right after fds_init(); and thus it did not crash on the subsequent write.

Kudos Vidar! :)

RE: Using FDS to save a Struct (Structure) and also reading it

Vidar Berg — Tue, 03 Dec 2019 12:39:05 GMT

[quote user="Ameer Usman"]Also is my flash saving procedure (especially the length_words variable) ok?[/quote]

Yes, the length calculation looks ok. the +3 should ensure that the length is always rounded up.

[quote user="Ameer Usman"]As for reading I have done the following, can you verify if this is the right way to do it?[/quote]

It looks correct to me, but you need to test it.

RE: Using FDS to save a Struct (Structure) and also reading it

Ameer Usman — Tue, 03 Dec 2019 12:24:41 GMT

Thanks Vidar but it worked once but upon performing erase and then again running it, it is giving error 0x02 on write function.

Thanks for sticking 🙂

RE: Using FDS to save a Struct (Structure) and also reading it

Vidar Berg — Tue, 03 Dec 2019 12:03:28 GMT

Hi,

The error code indicates that your .p_data pointer is not aligned to a 4-byte boundary as is required when flash writes. Try to define your 'beacon_flags' variable as shown below and see if you get the same error:

__ALIGN(4) beacon_packet_struct beacon_flags;