jump from ISR

[eggman]

Hello everyone,
I'm using DT's interrupts (very nice, thank you!) for the first time and run into a little problem which is probably easy to solve but I don't know how.
When the user pushes a button the program should stop some motors and then jump back to wait for a next button push.
If I use 'GOTO main' in my ISR it will not work, but how should I do it then? Any help appreciated.

;Program Configuration Register 1
@ __CONFIG _CONFIG1, _CP_OFF & _CCP1_RB3 & _DEBUG_OFF & _WRT_PROTECT_OFF & _CPD_OFF & _LVP_OFF & _BODEN_OFF & _MCLR_OFF & _PWRTE_OFF & _WDT_OFF & _INTRC_IO 

;Program Configuration Register 2
@ __CONFIG _CONFIG2, _IESO_OFF & _FCMEN_OFF

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

define  OSC 8
DEFINE  ADC_BITS        8         ' Set number of bits in result
DEFINE  ADC_CLOCK       3         ' Set clock source (3=rc)
DEFINE  ADC_SAMPLEUS    50        ' Set sampling time in uS

ANSEL        = %00000100        ' potmeter
CMCON        = %00000111
OSCCON       = %01111000        ' 8MHZ clock

PORTA        = %00000000
PORTB        = %00000000
TRISA        = %00010100                
TRISB        = %00001111   


direction1 var PORTA.0
direction2 var PORTA.1                                                                  
test       var PORTA.4
led        var PORTA.7
motor1     var PORTB.4
motor2     var PORTB.5

counter  var byte
duty      var byte
wsave    VAR BYTE $70 SYSTEM      ' location for W if in bank0
run        var bit

clear

led = 1    'led off


ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler    INT_INT,  _start_stop,   PBP,  yes          ; portb change interrupt
    endm
    INT_CREATE               ; Creates the interrupt processor
ENDASM

@   INT_ENABLE   INT_INT     ; enable external (INT) interrupts


Main:         
        if run = 1 then
            direction1 = 1
            pause 100
            motor1 = 1
            pause 2000
            motor1 = 0
            pause 5000
            direction1 = 0
            pause 100
            motor1 = 1
            pause 2000
            motor1 = 0
            pause 5000          
            direction2 = 1
            pause 100
            motor2 = 1
            pause 4000
            motor2 = 0
            pause 5000
            direction2 = 0
            pause 100
            motor2 = 1
            pause 4000
            motor2 = 0
            pause 1000           
        endif        
GOTO Main


'---[INT - interrupt handler]---------------------------------------------------
start_stop: 
   toggle run
   if run = 0 then 
      motor1 = 0
      motor2 = 0
      led =1
'HERE I want it to go to Main again
   else
      led = 0
   endif       
   pause 500
   
@ INT_RETURN
end

[cncmachineguy]

Before each motor on command (motorx=1) add
if run = 0 then goto main

That way, If run gets set to 0 while in the run=1 loop, it can get out before turning any motors on

[eggman]

Thanks Bert,

I thought of that too but assumed there would be an easier way.

regards,

eggman