ON INTERRUPT questions

[Acetronics2]

I did just a little try ...16F84A, button on PortB.0, Led on PortB.7

see :

'Test Blink

ON INTERRUPT GOTO Period
DISABLE INTERRUPT


DEFINE LCD_Ebit 1

I var Bit
Periode var Word

Led var Portb.7
Led = 0
Periode = 64


loop:

INTCON.4 = 1

For I = 1 to 1000
Pauseus Periode
Next I

Toggle led

Goto loop


Period:

INTCON = $80

Periode = ( Periode /2 )

IF NOT Periode THEN
Periode = 64
ENDIF


GOTO loop




END


the HEX, now, in the Program Window

Change line 5 ( RETURN ) to ( GOTO 0x54 ) ....

ENJOY !!!

That's all !!!

[Charles Linquis]

Thanks! I'll try it.

[Charles Linquis]

I'm using Microcode Studio, so I'm not familiar with Microchip's IDE.

I'm trying to figure out how you changed the return address of the interrupt routine to the address of my label ''CharInput'.

A couple of questions then:

Within the ASM file, how do I find out what address the various labels are located? My character input routine is call 'CharInput'. That is where I want the program to jump when it gets an interrupt from the serial port.

In the following, I see no RETFIE or RETURN where I could substitute the address of CharInput. Where do I find that?




Here is a portion of my ASM file.

; C:\PIC\BASIC\BAE5_INT.BAS 00175 ON INTERRUPT GOTO CharInput
ONINT?LL _CharInput, L00001

; C:\PIC\BASIC\BAE5_INT.BAS 00176 DISABLE INTERRUPT
IDISABLE?

[Acetronics2]

Hi Charles

Try this :

'Test Blink


DEFINE INTHAND _Period

I var Word
Periode var Word

Led var Portb.7
Led = 0
Periode = 64


loop:

INTCON = %10010000

For I = 1 to 1000
Pauseus Periode
Next I

Toggle led


Goto loop


Period:

INTCON = $80

Periode = ( Periode /2 )

IF NOT Periode THEN
Periode = 64
ENDIF


GOTO loop


END


!!! IMPORTANT NOTE !!! : DO NOT FORGET the underscore before Period , in the inthand DEFINE !!!

No mod to add to the Hex, this time !!!

No Retfie or Return to care with ... just give the jump label you want to go aft the interrupt stubb.

ENJOY

Alain

PS : Doesn't hurt MCS nor ....

[Charles Linquis]

Thank you, Thank you, Thank you!

I have modified my code to deal with a serial port interrupt, and (so far at least) it is working perfectly.