NRF_EVT_FLASH_OPERATION_SUCCESS fired only if Radio notifications enabled.

[Valer_I]

Hello, Before writing here I made some forum search and didn't find the answer. Previously I used radio notifications to sync ADC measurements with radio events. Now I need to disable radio notifications in the project and noticed that firmware become working unstable. The BLE connection breaks ocasionally and the flash write operations stuck. Softdevice used S110. I do not use pstorage but use own functions. Flash operation states are read from SD_EVT_IRQHandler (SWI2) ( NRF_EVT_FLASH_OPERATION_SUCCESS and NRF_EVT_FLASH_OPERATION_ERROR ). Noticed that no interrupt fired after flash operation (sd_flash_write()) . What could cause such behaviour? Why enabling Radio notifications make flashoperation working?

P.S. I read the errata for softdevice but do not see the link with my issue.

[Valer_I]

Aryan, the code is very complicated and it would be hard to reproduce because the part of logics is on cloud server . I'll try to convert it later to make it simpler and submit it. Now I found that it seem to be the even number of bugs. The SD speck states "It is therefore recommended to configure the Radio Notification signals directly after the SoftDevice has been enabled." In my case radio notifications were inited after sd_ble_enable, now I placed in such order:

sd_softdevice_enable()
sd_nvic_EnableIRQ(SD_EVT_IRQn)
ble_radio_notification_init(NRF_APP_PRIORITY_LOW,NRF_RADIO_NOTIFICATION_DISTANCE_1740US,radio_notification_evt_handler);
sd_ble_enable()

... and it does not work! the same as just disable radio notifications initialization. It seems thar radio notification init in incorrect place treated some other bug 0_o. Any suggestions?