Erase multiple pages not working(nrf51822)

[Vikram]

I want to erase selected pages from the NRFflash memory (Not whole flash).

I have defined one function for NRF memory erase. In that, I have followed following sequence of operations:

for (Number of page erase) {

1. Set NVMC mode: Erase
2. Wait for ready flag
3. Set start address of erase page
4. Wait for NVMC ready flag

}

Sometimes, I have observed that (by reading through nrfjprog.exe) page content was not erased for few pages. While doing this operation the BLE radio was in the off state.

Am I missing any condition here?

[MartinBL]

Hi,

Your tags seem to indicate that you are using the softdevice flash API? Have you tried using the regular SoC API? The ducomentation of sd_flash_page_erase() says:

If the SoftDevice is not enabled no event will be generated, and this call will return NRF_SUCCESS when the erase has been completed

Otherwise, what are the addresses of the pages that don't get erased?