Hi Janaka,

have a look at this post: http://e2e.ti.com/support/microcontrollers/msp43016-bit_ultra-low_power_mcus/f/166/p/18663/71969.aspx#71969.

The functions presented there work fine (and it also contains some other information which might be useful for you). The example presented uses MSP430F2274 but it explains how to write to flash memory.

Rgds
aBUGSworstnightmare 

I made a sort of datalogger for MSP430F2252 which should works like the serie 1 (made in speed so it is not really good written but it works for the need I have).

 There is a lot of really good information on user guide, and perhaps try to look at some code example.

This is the method I use to write on flash

;------------------------------------------------------------------------------
; Write on flash
;------------------------------------------------------------------------------
; Input: ADCresult, value to write at address R8
;------------------------------------------------------------------------------
WriteFlash:
dint ;Disable interrupts
mov.w #FWKEY+FSSEL1+FN0,&FCTL2 ;SMCLK/2
mov.w #FWKEY,&FCTL3 ;Clear lock
mov.w #FWKEY+WRT,&FCTL1 ;Enable write
mov.w ADCresult,0(R8) ;Write ADC10MEM @ address
mov.w #FWKEY,&FCTL1 ;Write done, clear WRT
mov.w #FWKEY+LOCK,&FCTL3 ;Set lock
eint ;Enable interrupts
ret

each two minute I call this function from MAIN

[...]
call #WriteFlash
incd.w R8
cmp.w #StopAddr,R8
 jl Continue
;---- Stop data mining
bis.w #LPM4,SR
 [...]

And R8 is initialized (at power on) like that:

mov.w    #StartAddr,R8

And finally the parameters for the reserved space:

StartAddr EQU 0C200h
StopAddr EQU 0FF00h