DT inst. interrupt & Timer0 with pic 16F88

[aratti]

I am anable to compile without ERROR[113] Symbol not previously defined (T0IF) using timer0 interrupt.

Here the code:

INCLUDE "DT_INTS-14.bas"     ; Base Interrupt System
INCLUDE "ReEnterPBP.bas"     ; Include if using PBP interrupts

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ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?       
        INT_Handler    RX_INT,   _Getbytes,     PBP,  yes          
        INT_Handler    TMR0_INT, _TM0Label,     PBP,  yes  
        ;INT_Handler    TMR1_INT, _TM1Label,     PBP,  yes
             
    endm
    INT_CREATE               ; Creates the interrupt processor
ENDASM


@     INT_ENABLE  RX_INT     ; enable RX_INT interrupts
@     INT_ENABLE TMR0_INT
;@     INT_ENABLE TMR1_INT

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If I comment out TMR0 interrupt then the code compiles correctly, this is the case also with TMR1 interrupt (good compiling) but not with TMR0.

Since, I cannot find out the reason for this error, I need help please.


Al.

[Bruce]

Open P16F88.INC in your MPLAB directory and look under the INTCON Bits section.

;----- INTCON Bits --------------------------------------------------------
GIE                          EQU     H'0007'
PEIE                         EQU     H'0006'
TMR0IE                       EQU     H'0005'
INTE                         EQU     H'0004'
RBIE                         EQU     H'0003'
TMR0IF                       EQU     H'0002'
INTF                         EQU     H'0001'
RBIF                         EQU     H'0000'

It's defined as TMR0IF. You can fix this with;

;----- INTCON Bits --------------------------------------------------------
GIE                          EQU     H'0007'
PEIE                         EQU     H'0006'
TMR0IE                       EQU     H'0005'
INTE                         EQU     H'0004'
RBIE                         EQU     H'0003'
TMR0IF                       EQU     H'0002'
T0IF                         EQU     H'0002'
INTF                         EQU     H'0001'
RBIF                         EQU     H'0000'

Several of the newer 16F header files have it listed both ways.

[aratti]

Thank you Bruce, very kind of you. Simple thing if you know it!

Al.

[aratti]

Now my pic16F88.inc INTCON Bits section is as below, but not success in compiling. Still the same error# but changed definition. Now: "Symbol not priously defined (T0IE)"

;----- INTCON Bits --------------------------------------------------------
GIE                          EQU     H'0007'
PEIE                         EQU     H'0006'
TMR0IE                       EQU     H'0005'
INTE                         EQU     H'0004'
RBIE                         EQU     H'0003'
TMR0IF                       EQU     H'0002'
T0IF                         EQU     H'0002'
INTF                         EQU     H'0001'
RBIF                         EQU     H'0000'

Still, commenting out TMR0_INT error disappear.

Al.

[Bruce]

Just add it & save it.

;----- INTCON Bits --------------------------------------------------------

GIE                          EQU     H'0007'
PEIE                         EQU     H'0006'
T0IE                         EQU     H'0005' ; <---- same as below without the MR
TMR0IE                       EQU     H'0005'
INTE                         EQU     H'0004'
RBIE                         EQU     H'0003'
T0IF                         EQU     H'0002'
TMR0IF                       EQU     H'0002'
INTF                         EQU     H'0001'
RBIF                         EQU     H'0000'

[aratti]

Thank you again Bruce, this additional line fixed the problem!

Al.

[ronbowalker]

Sorry for the late entry, but I have the same issue and I am not familiar with where the .inc file you guys are editing is located. Can you assist me?

I scanned my PC and found it. Made the change as recommended above, all errors were fixed. Thanks guys...