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标题: RA1电平中断唤醒 zhuan [打印本页]

作者: star 时间: 2012-8-21 18:18
标题: RA1电平中断唤醒 zhuan
;********************************************************************
list    p=16F676,R=DEC       ; list directive to define processor
#include <p16F676.inc>       ; processor specific variable definitions
; errorlevel  -302             ; suppress message 302 from list file
__CONFIG _CP_OFF & _CPD_OFF & _BODEN_OFF & _MCLRE_OFF & _WDT_OFF & _PWRTE_ON & _INTRC_OSC_NOCLKOUT
;**********************************************************************
  ORG 0    ; processor reset vector
      GOTO INIT          ; go to beginning of program
  ORG 4    ; interrupt vector location
   RETFIE
;---------------------
IINIT
BCF    STATUS,RP0
  MOVLW 00010000B
  MOVWF PORTA
  MOVLW 00111000B
  MOVWF PORTC
      CALL 0x3FF          ; retrieve factory calibration value
      BSF    STATUS,RP0       ; set file register bank to 1
      MOVWF OSCCAL          ; update register with factory cal value
            ; set file register bank to 0
  MOVLW 10H
  MOVWF ANSEL
   MOVLW 00001010B  ;A0,A5,INPUT
   MOVWF TRISA
  MOVLW 00000001B  ;
   MOVWF TRISC


   MOVLW 07H ;1:128,up_enable
  MOVWF OPTION_REG
  MOVLW 00000010B
  MOVWF WPUA
  MOVLW 00000010B
  MOVWF IOCA

  MOVLW    01010000B
MOVWF    ADCON1       ;FOSC/16

  CLRWDT
  BCF STATUS,RP0
  MOVLW 07H  ;
   MOVWF CMCON ;io set digital
  MOVLW    10010001B
MOVWF    ADCON0
  MOVLW 08H    ; RAIE
  MOVWF INTCON
  NOP
  BTFSS PORTA,1
  GOTO $-1
MOVF PORTA,0
      BCF INTCON,RAIF ;要清中断

nop
sleep
nop
BSF PORTA,0
  GOTO $

;------------------------------------------
      END                      ; directive 'end of program'

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