Interrups While writing to the flash

Hi,

I have questions related to the Hercules mcu TMS570LS313 running with OS FreeRTOS and LWIP TCP/IP Stack provided from TI.

I try to write data (30Kbytes all equal 0x22) to the Flash Bank 1 using the F021 Flash API. This work fine when I Enter a critical Section (disable all interrups) while the FSMStatus is busy:

...

oReturnCheck = Fapi_issueProgrammingCommand(pDest, pSrc, 1, 0, 0, Fapi_DataOnly);

taskENTER_CRITICAL(); // disable all interrups

while(Fapi_checkFsmForReady() == Fapi_Status_FsmBusy){};

taskEXIT_CRITICAL(); // enable interrups

oReturnCheck = Fapi_getFsmStatus();

...

When I run the same code without disabling the interrups, the write to the flash go wrong. I.e., there are 1 or 2 Bytes in the flash with the value 0x00 instead of 0x22.

My Quetion:

Is it necessary to disable all the interrups while writing to the flash?

OR there is another possibility to manage this?

Regards