fstorage compilation problem

[ANKITTY]

i am compiling an code just to store a data to flash and retrieve it. i wrote the code for that i included fstorage.h,section_vars.h and added fstorage.c. I am not using any soft device now but while compiling i am getting the errors as

 compiling fstorage.c...
..\..\..\..\..\..\components\libraries\fstorage\fstorage.c(90): warning:  #223-D: function "sd_flash_write" declared implicitly
      return sd_flash_write((uint32_t*)p_op->store.p_dest + p_op->store.offset,
..\..\..\..\..\..\components\libraries\fstorage\fstorage.c(99): warning:  #223-D: function "sd_flash_page_erase" declared implicitly
      return sd_flash_page_erase(p_op->erase.page);

*..**\..\..\..\..\..\components\libraries\fstorage\fstorage.c(498): error:  #20: identifier "NRF_EVT_FLASH_OPERATION_SUCCESS" is undefined
              case NRF_EVT_FLASH_OPERATION_SUCCESS:
..\..\..\..\..\..\components\libraries\fstorage\fstorage.c(502): error:  #20: identifier "NRF_EVT_FLASH_OPERATION_ERROR" is undefined
              case NRF_EVT_FLASH_OPERATION_ERROR:***

..\..\..\..\..\..\components\libraries\fstorage\fstorage.c: 2 warnings, 2 errors
compiling RTT_Syscalls_KEIL.c...

whether i am missing any include file or library please guide...

[Jørgen Holmefjord]

Which SDK version are you using? Are you using softdevice in your application? All these functions and symbols should be declared in nrf_soc.h found in the softdevice include headers directory.

[ANKITTY]

I AM NOT USING ANY SOFT DEVICE AND THE SDK VERSION IS 12.2 ON NRF51422

[Jørgen Holmefjord]

You can't use fstorage in SDK 12.2.0 wihout softdevice. It relies on the softdevice calls to perform flash operation. In SDK 14.0.0, two separate backends are supported, one for use with softdevice (nrf_fstorage_sd), and one for use without softdevice (nrf_fstorage_nvmc).

If you want to write to flash in SDK 12.2.0, without using softdevice, you can use the NVMC driver directly, or have a look at the flash write example.