Simply question about the ASM (INT0), Please help~!

[johnny01hk]

I want to add the INT0 into my program,
When the INT have Logic 0 input,then the progarm will auto jump to Z,
also stop before working process.
But I don't know how to add that function on my progarm.
And I don't know hot to setting the other point.
For example the IT0, EA, EX0,

Who can help me write a command and setting into my progarm?


--------------------------------------------


ORG 00H
JMP START

ORG 100h

START:
SETB P2.0 ;Motion detector Input
SETB P2.1 ;Metal detector Input
CLR P1.0
CLR P1.1

Loop:
JNB P2.0, X
JNB P2.1, Z
SJMP Loop

; = = = = = = = = = = = = = =

X:
SETB P1.0
CLR P1.1
LCALL Delay ;Call Delay
CLR P1.0
CLR P1.1
SJMP START

Z:
SETB P1.1
CLR P1.0
LCALL Delay ;Call Delay
CLR P1.0
CLR P1.1
SJMP START

; = = = = = = = = = = = = = =

Delay:
MOV R2, #50 ;~1s
S1:
MOV R3, #200
S2:
MOV R4, #200
DJNZ R4, $
DJNZ R3, S2
DJNZ R2, S1
RET

END

 

[IanP]

It may not be the final version but at least will give you an idea on how to use and acitvate Int0 ..

$NOPAGING
$MOD252
;BIT  PSW.1 is used as general purpose flag ..

ORG		0000H 
LJMP		START

ORG		0003h
LJMP		ExtInt0		; External interrupt 0 ..

ORG 0100h 

START:

SETB		TCON.0		; Int0 active at the edge..
SETB		IE.7			; General interrupt active..
SETB		IE.0			; Int0 is enabled..

START2:

SETB P2.0 ;Motion detector Input 
; Metal detector to be connected to /INT0 .. SETB P2.1 - Metal detector Input 
CLR P1.0 
CLR P1.1 

Loop: 
JNB P2.0, X 
;			JNB P2.1, Z 
JB	PSW.1, Z
SJMP Loop 

; = = = = = = = = = = = = = = 

X: 
SETB P1.0 
CLR P1.1 
LCALL Delay ;Call Delay 
CLR P1.0 
CLR P1.1 
SJMP START2 

Z:
CLR	PSW.1		; Clear flag .. 
SETB P1.1 
CLR P1.0 
LCALL Delay ;Call Delay 
CLR P1.0 
CLR P1.1
SJMP START2 

; = = = = = = = = = = = = = = 

Delay: 
MOV R2, #50 ;~1s 
S1: 
MOV R3, #200 
S2: 
MOV R4, #200
S3:
JB	PSW.1, Del_Exit	; If interrupt occured exit delay .. 
DJNZ R4, S3 
DJNZ R3, S2 
DJNZ R2, S1
Del_Exit: 
RET

; = = = = = = = = = = = = =
ExtInt0:
SETB		PSW.1		; set flag on interrupt ..
RETI 

END

IanP

 

[johnny01hk]

It may not be the final version but at least will give you an idea on how to use and acitvate Int0 ..

$NOPAGING
$MOD252
;BIT  PSW.1 is used as general purpose flag ..

ORG		0000H 
LJMP		START

ORG		0003h
LJMP		ExtInt0		; External interrupt 0 ..

ORG 0100h 

START:

SETB		TCON.0		; Int0 active at the edge..
SETB		IE.7			; General interrupt active..
SETB		IE.0			; Int0 is enabled..

START2:

SETB P2.0 ;Motion detector Input 
; Metal detector to be connected to /INT0 .. SETB P2.1 - Metal detector Input 
CLR P1.0 
CLR P1.1 

Loop: 
JNB P2.0, X 
;			JNB P2.1, Z 
JB	PSW.1, Z
SJMP Loop 

; = = = = = = = = = = = = = = 

X: 
SETB P1.0 
CLR P1.1 
LCALL Delay ;Call Delay 
CLR P1.0 
CLR P1.1 
SJMP START2 

Z:
CLR	PSW.1		; Clear flag .. 
SETB P1.1 
CLR P1.0 
LCALL Delay ;Call Delay 
CLR P1.0 
CLR P1.1
SJMP START2 

; = = = = = = = = = = = = = = 

Delay: 
MOV R2, #50 ;~1s 
S1: 
MOV R3, #200 
S2: 
MOV R4, #200
S3:
JB	PSW.1, Del_Exit	; If interrupt occured exit delay .. 
DJNZ R4, S3 
DJNZ R3, S2 
DJNZ R2, S1
Del_Exit: 
RET

; = = = = = = = = = = = = =
ExtInt0:
SETB		PSW.1		; set flag on interrupt ..
RETI 

END

IanP

Thx so much~~!

 

[IanP]

Thx so much~~!

No worries!
Are you happy with the way it exits the delay loop when an interrupt occurs?

IanP

 

[johnny01hk]

Thx so much~~!

No worries!
Are you happy with the way it exits the delay loop when an interrupt occurs?

IanP

yup~~
My teacher~
you are so grandness!!