I have used DT-Ints for a couple other projects and I finally had a need to use interrupt on change. I thought it would be fairly easy compared to the RX_int and timers, but I seem to be missing something basic as I can not get the interrupts to trigger. Basically I want to monitor Pins B.5 and B.6 on a PIC18F45k22 and if there is ever a change on either pin the to put that output onto PORTA.0. I have added some lines to toggle an LED on A.1 just for a visual check, but it never changes either. I have stripped the code down to the basics and still nothing. I'm assuming there is one register I need to setup but I have tried playing with several with no luck and was under the impression the DT-INTS would take care of the register setting anyway.
Thanks for taking a moment to look
David
Code:
#CONFIG
CONFIG FOSC = HSHP
CONFIG PLLCFG = ON
CONFIG PRICLKEN = ON
CONFIG FCMEN = ON
CONFIG IESO = OFF
CONFIG PWRTEN = ON
CONFIG BOREN = ON
CONFIG BORV = 250
CONFIG WDTEN = ON
CONFIG WDTPS = 512
CONFIG PBADEN = OFF
CONFIG MCLRE = EXTMCLR
CONFIG STVREN = OFF
CONFIG LVP = OFF
CONFIG XINST = OFF
CONFIG CP0 = ON
CONFIG CP1 = ON
CONFIG CP2 = ON
CONFIG CP3 = ON
#ENDCONFIG
Clear
DEFINE OSC 40 ' Set Xtal Frequency
INCLUDE "C:\PBP\DT_INTS-18.bas" ; Base Interrupt System
INCLUDE "C:\PBP\ReEnterPBP-18.bas" ; Include if using PBP interrupts
'Set Ports for Outputs/Inputs
TRISA = %11111100
TRISC = %10000111 'Set PORTC 0,1,2 to input for switches, 7 for RX
TRISD = 0
TRISE = 0
TRISB = %01110011
PORTA.1 = 1
PORTC.4 = 1
ANSELA = 0
ANSELB = 0
ANSELC = 0
ANSELD = 0
ANSELE = 0
;****************Using Darrel Taylor Interrupts****************************
;----[High Priority Interrupts]--------------------------------------------
ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler INT1_INT, _IntPORTB5, PBP, yes
INT_Handler INT2_INT, _IntPORTB6, PBP, yes
endm
INT_CREATE ;Creates the High Priority interrupt processor
ENDASM
@ INT_ENABLE INT1_INT ; enable external (INT) interrupts
@ INT_ENABLE INT2_INT ; enable external (INT) interrupts
main
toggle PORTC.4
pause 500
goto main
;---[INT - interrupt handler]---------------------------------------------------
IntPORTB5: 'cloop
PORTA.0 = PORTB.5
toggle PORTA.1
@ INT_RETURN
IntPORTB6: '232/485
PORTA.0 = PORTB.6
toggle PORTA.1
@ INT_RETURNDavid