stuck in wait_for_flash_ready()

[Simon Jiayu]

I'm working on a NRF52832 project with SDK V15.2, using S132 Softdevice. before connecting, nrf_fstorage_write/nrf_fstorage_erase/sd_flash_write/sd_flash_page_erase all are work perfectly. But once connected with a device, all the operations to flash can't work. it'll stuck in wait_for_flash_ready, return of nrf_fstorage_write & nrf_fstorage_erase  are NRF_SUCCESS.  If I call nrf_sdh_disable_request() before  nrf_fstorage_write & nrf_fstorage_erase, the operations can be done correctly.  Never goes into fstorage_evt_handler() after connected to a device.

Please help me figure out this issue, thanks in advanced.

[Einar Thorsrud]

Hi,

What connection parameters are using in the BLE link? As you can see from Flash API timing in the SoftDevice specification:

Flash timing-activity may not get a timing-event at all if other timing-events occupy most of the time and use priority higher than flash timing-activity.

If this is the problem, which seems likely, then it could be fixed by for instance using longer connection intervals.

[Simon Jiayu]

Hi Einar,

I used below parameters, let me try to use a longer interval and then get back to you.

#define MIN_CONN_INTERVAL               MSEC_TO_UNITS(20, UNIT_1_25_MS)       
#define MAX_CONN_INTERVAL               MSEC_TO_UNITS(75, UNIT_1_25_MS)