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interrupt with pic16f876

 
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phil1
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interrupt with pic16f876
PostPosted: Thu Mar 29, 2007 2:25 pm     Reply with quote
help,

i use compiler pcwh 4.017, pic16f876 . The interrupts ccp1 and ccp2 doesn't work . I tried the example programme EX_CCPMP from ccs, and it still not work. if i do a test " interrupt_active(int_ccp1)", it appear that the interupt is not active ( i have before write "
setup_ccp2(CCP_CAPTURE_FE)
enable_interrupts(int_ccp2)
enable_interrupts(GLOBAL)

i'm quite sure that the program is ok. is it some thing special to configure with the compiler???

thanks for any help

philippe
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Mar 29, 2007 4:48 pm     Reply with quote
Vs. 4.017 is writing to the wrong register addresses for CCP1CON
and CCP2CON. I would ask CCS for an upgrade to a working version.
If they won't do that, then get vs. 3.249. But you need some other
version than 4.017.

Code for vs. 4.017. This has bugs.
Code:
...    setup_ccp1(CCP_CAPTURE_RE);
*
012A:  MOVLW  FF
012B:  BCF    03.5
012C:  MOVWF  2E
*
013A:  BSF    2E.2
013B:  MOVF   2E,W
013C:  BSF    03.5
013D:  MOVWF  07
013E:  CLRF   44   // Bug
013F:  MOVLW  05
0140:  MOVWF  44   // Bug

......    setup_ccp2(CCP_CAPTURE_FE);
0141:  BCF    03.5
0142:  BSF    2E.1
0143:  MOVF   2E,W
0144:  BSF    03.5
0145:  MOVWF  07
0146:  CLRF   45   // Bug
0147:  MOVLW  04
0148:  MOVWF  45   // Bug


Code for vs. 4.030:
Code:
...    setup_ccp1(CCP_CAPTURE_RE);   
*
012A:  MOVLW  FF
012B:  BCF    03.5
012C:  MOVWF  2E
*
013A:  BSF    2E.2
013B:  MOVF   2E,W
013C:  BSF    03.5
013D:  MOVWF  07
013E:  BCF    03.5
013F:  CLRF   17
0140:  MOVLW  05
0141:  MOVWF  17

....    setup_ccp2(CCP_CAPTURE_FE);
0142:  BSF    2E.1
0143:  MOVF   2E,W
0144:  BSF    03.5
0145:  MOVWF  07
0146:  BCF    03.5
0147:  CLRF   1D
0148:  MOVLW  04
0149:  MOVWF  1D



Code for 3.249:
Code:

...    setup_ccp1(CCP_CAPTURE_RE);   
*
0124:  MOVLW  FF
0125:  BCF    03.5
0126:  MOVWF  2E
*
0132:  BSF    2E.2
0133:  MOVF   2E,W
0134:  BSF    03.5
0135:  MOVWF  07
0136:  BCF    03.5
0137:  CLRF   17
0138:  MOVLW  05
0139:  MOVWF  17

...    setup_ccp2(CCP_CAPTURE_FE);
013A:  BSF    2E.1
013B:  MOVF   2E,W
013C:  BSF    03.5
013D:  MOVWF  07
013E:  BCF    03.5
013F:  CLRF   1D
0140:  MOVLW  04
0141:  MOVWF  1D
phil1
Guest
interrupts
PostPosted: Fri Mar 30, 2007 4:52 am     Reply with quote
thanks a lot
the first correction should be to write this part of code in assembler
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