Texas Instruments MSP50C614 manual ~,TIM2REFOSC + TIM2IMR

Models: MSP50C614

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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

Page 375
Image 375
Texas Instruments MSP50C614 manual ~,TIM2REFOSC + TIM2IMR