talhak
New Member
My another problem with P16F877A is "Capture Mode".. It doesn't capture the value of CCPR1L when I gave clock from RC2 pin.. I sent the value to display to see, but there's no change.. Please can anyone help me? Thanx a lot..
Here's my .asm program:
And here's my design:
**broken link removed**
Here's my .asm program:
Code:
list p=16f877a;
#include <p16f877a.inc>
__CONFIG H'3FF0'
NUM EQU h'21'
ORG h'00'
GOTO START
ORG h'04'
GOTO INT
DELAY:
BSF STATUS,2
MOVLW h'60'
DECRE:
DECF SAYAC,1
BTFSC STATUS,2
RETURN
GOTO DECRE
INIT:
BSF STATUS,5
BSF TRISC,2 ;RC2 INPUT
BSF INTCON,7
BSF INTCON,6
BSF PIE1,2 ; CCP1IE ACTIVE
BCF PIE1,0 ; TMR1 INT PASSIVE
CLRF TRISB
BCF STATUS,5
;CLRF PORTB
MOVLW h'00'
MOVWF PORTB
BCF PIR1,2 ; CCP1IF CLEARED
MOVLW h'A0'
MOVWF TMR1H
MOVLW h'00'
MOVWF TMR1L
BCF CCP1CON,3
BSF CCP1CON,2
BCF CCP1CON,1
BSF CCP1CON,0 ; EVERY RISING EDGE
BSF T1CON,0 ; TMR1 ON
RETURN
INT:
BCF INTCON,7
BCF INTCON,6
BSF STATUS,5
BCF PIE1,2
BCF STATUS,5
BCF PIR1,2 ; CCP1IF
MOVF CCPR1L,0
MOVWF PORTB ; TMR1L ICERIGI -> PORTB'DEKI LEDLERE
CALL DELAY
;INCF PORTB,0
MOVLW h'A0'
MOVWF TMR1H
MOVLW h'00'
MOVWF TMR1L
BSF STATUS,5
BSF PIE1,2
BCF STATUS,5
BSF T1CON,0 ; TMR1 ON
BSF INTCON,7
BSF INTCON,6
RETFIE
START:
CALL INIT
LOOP:GOTO LOOP
ENDAnd here's my design:
**broken link removed**