Help configuring 2 CCP interupts

[richard]

it should also be noted that for a low priority int handler

wsave,ssave,bsave vars are required to save and restore chips status on entry/exit

and that the chosen int priority must match settings

DEFINE INTHAND CCP_INT ' Declare high-pri interrupt handler
DEFINE INTLHAND CCP2_INT ' Declare interrupt handler


CapPriEn = 1 'Set CCP1 int to high priority
CapPriEn2 = 0 'Set CCP2 int to low priority

also to note that none or the isr's in this thread have made any attempt at ensuring correct banksel
a few chk??rp lines would make things more reliable

[spcw1234]

Below is my working ASM interrupt routine. I'm sure it could be improved, but it appears to work 100%. Using only 1 priority interrupt for the CCP module. Thanks for all the help!

ASM
X_CCP_INT
  BTFSC PIR1,2          ; if ccp1
  BRA CCP_INT           ; goto CCP_INT
  BTFSC PIR2,0          ; if ccp2
  BRA CCP2_INT          ; goto CCP2_INT
  RETFIE FAST           ; outta here 
CCP_INT
  BTFSS CCP1CON,0       ; capture from rising edge?
  BRA Fall              ; no .. goto falling edge
  MOVFF CCPR1L, _T1     ; get low capture byte into _T1
  MOVFF CCPR1H, _T1+1   ; get high capture byte into _T1
  BRA IntExit           ; outta here
Fall
  MOVFF CCPR1L, PW      ; get low capture byte into PW
  MOVFF CCPR1H, PW+1    ; get high capture byte into PW
  BSF CF,0              ; indicate last capture
IntExit
  BTG CCP1CON,0         ; toggle between rising/falling edge captures
  BCF PIR1,2            ; clear capture interrupt flag bit
  RETFIE FAST           ; return/restore W, STATUS and BSR
CCP2_INT
  BTFSS CCP2CON,0       ; capture from rising edge?
  BRA Fall2             ; no .. goto falling edge
  MOVFF CCPR2L, _T2     ; get low capture byte into _T1
  MOVFF CCPR2H, _T2+1   ; get high capture byte into _T1
  BRA IntExit2          ; outta here
Fall2
  MOVFF CCPR2L, PW2     ; get low capture byte into PW
  MOVFF CCPR2H, PW2+1   ; get high capture byte into PW
  BSF CF2,0             ; indicate last capture
IntExit2
  BTG CCP2CON,0         ; toggle between rising/falling edge captures
  BCF PIR2,0            ; clear capture interrupt flag bit
  RETFIE FAST           ; return/restore W, STATUS and BSR
ENDASM