Texas Instruments MSP50C614 manual ~,TIM2REFOSC + TIM2IMR

MSP50C614/MSP50P614 Initialization Codes

mov	*save_clkspdctrl,a0	;save the ClkSpdCtrl value for later, when
		;waking up from mid or deep sleep
mov	0~,TIM2REFOSC + TIM2IMR	;disable TIMER 2
out	IntGenCtrl,a0~
mov	a0~,6553	;setup a 200 ms period
out	TIM2,a0~	;load TIM2 and PRD2 in one fell swoop
mov	a0~,TIM2ENABLE + TIM2REFOSC + TIM2IMR
out	IntGenCtrl,a0~	;use 32 kHz crystal as source, wake up
from TIM2
out	ClkSpdCtrl,a0	;set clock to full speed!
idle		;go to sleep...
nop		;wake up 200 ms later, clock running at
full speed

nop nop

;****************************************************************

;Upon reset all ports are set to input and port G output is set

;low (0x0000). Therefore it remains only to enable the pullups

;on port F. ;****************************************************************

in	a0,IntGenCtrl
or	a0,PFPULLUPS	;enable port F pullups
and	a0,~TIM2IMR	;turn off TIMER	2	interrupt
and	a0,~TIM2ENABLE	;turn off TIMER	2
out	IntGenCtrl,a0

;****************************************************************

;Set the DAC to 10 bits, C3x style. For C5x style set bit 3

;high.

;****************************************************************

movb	a0,0x02	;choose 10 bit DAC, C3x style
orb	a0,DACON	;enable DAC
out	DACCTRL,a0	;switch DAC on

;****************************************************************

;Initialization complete. Now tidy up and branch to the main

;user code. ;****************************************************************

zac	a0	;tidy up
zac	a0~
jmp	_main	;jump to the main program

Applications 6-7