fstorage is busy appears when BLE sends and receives data

[john.liu]

ble_app_uart_test_fst_is_busy.rar

I use SDK16.

test fstorage write data.I find fstorage is busy appears when BLE sends and receives data.

for example main.c :

line 206:  fst_erase_test();
line 207:  NRF_LOG_INFO("FST Test.");

I don't know how.pls help me. thank you!

[Einar Thorsrud]

Hi,

The problem here seems to be that you are waiting for fstorage to not be busy in a do-while loop, but that is done in an interrupt priority (SoftDevice event handler), so fstorage will not run (since it doe snot have higher priority).

[john.liu]

hi:

thank you,I see.

But how to set the priority of fstorage, higher than  (event handler).I need to receive data from app and write it to fstorage.

[Einar Thorsrud]

Hi,

fstorage calls the SoftDevice flash API's, so you cannot give it higher priority than the event handler where you are waiting for it in now (which is also given by the SoftDevice priorities). Instead, you should wait for it outside of an interrupt context, i.e.: in your main loop. This is a common mistake, and the golden rule is that whenever you wait for something, you must wait in a lower priority (prefrably thread mode / main context).

[john.liu]

thank you