'sd_flash_page_erase' mass flash erase usage, with sd110

[mira67]

Hi Nordic DEV Team,

In my application, I would like to use sd_flash_page_erase to erase like 100 pages user data; the problem of pstorage is that I cannot specify the page ranges to erase, so choose to use sd_flash_page_erase function.

But when I use - for(uint32_t i = 108; i < 252; ++i){ err_code = sd_flash_page_erase(i); APP_ERROR_CHECK(err_code); } It doesn't work, so how to handle this kind of usage case properly? Need to wait until an application level SUCCESS flag returned by softdevice of one erase command and then do another?

Thanks.

[Konstantin K]

Correct. You need to register for sys event notifications. You check for flash operation success and start the next page erase. Here's an example:

softdevice_sys_evt_handler_set(sys_evt_dispatch);

static void sys_evt_dispatch(uint32_t sys_evt)
{
    switch(sys_evt)
    {
        case NRF_EVT_FLASH_OPERATION_SUCCESS:
            // erase next page here
            break;
         case NRF_EVT_FLASH_OPERATION_ERROR:
            // error handling here (perhaps retry)
            break;
        default:
            break;
    }
}