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]

Hi, nrf51822 rev3, s110 v.8. I disabled radio functionality in the project. So initialization routine doesnt compile. The project is big and commercial so I did not allowed to share it. However I could share some parts of ble initialization if needed. I use sd_ble... functions for it, no SDK ones. Till now made some research, enabled radio notifications but disabled any code in handler. Everithing works, at 3620us but fails at 800us.