FDS don't work when softdevice is enabled ?

[CHATAR]

Hello,

I am using : SDK 17.0.2 and S132_7.2.0 with nrf52832 DK

in my BLE application, the FDS has 2 behaviors :

1) When the softdevice is enabled : fds_write returns NRF_SUCCESS, but the value read is incorrect and completly random  (fds_record_open & fds_record_close return NRF_SUCCESS)

2) When the softdevice is disabled :  fds_write returns NRF_SUCCESS, and the value read is correct  (fds_record_open & fds_record_close return NRF_SUCCESS)

Question : does the  FDS work with softdevice enabled ?

Thanks,

[Vidar Berg]

Hello,

Yes, FDS works when the Softdevice is enabled, the difference is that the write and erase operations go from blocking to asynchronous when the Softdevice is enabled. This is because FDS has to use the Softdevice's "Flash memory API" while the Softdevice is enabled. You basically have to wait for the FDS callback to signal completion of a write before you can read back the written data record.

Best regards,

Vidar