delayms.asm

基于AT89S52的GSM安防系统

;调用需要定义以下函数原型
;extern void delayms_48us();
;extern void delayms_1ms();
;extern void delayms_10ms();
;extern void delayms_100ms();
;extern void delayms_1000ms();




; .\delayms.SRC generated from: delayms.c
; COMPILER INVOKED BY:
;        C:\Keil\C51\BIN\C51.EXE delayms.c BROWSE DEBUG OBJECTEXTEND SRC(.\delayms.SRC)


NAME	DELAYMS

?PR?delayms_48us?DELAYMS                 SEGMENT CODE 
?PR?delayms_1ms?DELAYMS                  SEGMENT CODE 
?PR?delayms_10ms?DELAYMS                 SEGMENT CODE 
?PR?delayms_100ms?DELAYMS                SEGMENT CODE 
?PR?delayms_1000ms?DELAYMS               SEGMENT CODE 
	PUBLIC	delayms_1000ms
	PUBLIC	delayms_100ms
	PUBLIC	delayms_10ms
	PUBLIC	delayms_1ms
	PUBLIC	delayms_48us
; //CFUNC.c文件
; 
; #define uchar unsigned char
; #define uint unsigned int

; void delayms_48us()

	RSEG  ?PR?delayms_48us?DELAYMS
delayms_48us:
	USING	0

	       MOV  	R7,#21
DLY1S48us3:    DJNZ     R7,DLY1S48us3      ;248*2+4
	       nop
	RET  	
; END OF delayms_1ms


; 
; void delayms_1ms()

	RSEG  ?PR?delayms_1ms?DELAYMS
delayms_1ms:
	USING	0

	       MOV  	R7,#229
DLY1S3:	       nop
               nop
               DJNZ R7,DLY1S3      ;248*2+4
	       nop
	RET  	
; END OF delayms_1ms
;

; 
; void delayms_10ms()

	RSEG  ?PR?delayms_10ms?DELAYMS
delayms_10ms:
	USING	0

DLY10S1:       MOV R6,#49
DLY10S2:       MOV R7,#92                                 
DLY10S3:
               DJNZ R7,DLY10S3      ;248*2+5
               DJNZ R6,DLY10S2      ;(248*2+3)*200+5
	       MOV R6,#22
DLY10S4:       DJNZ R6,DLY10S4
NOP
	RET	
; END OF delayms_10ms

; 
; void delayms_100ms()

	RSEG  ?PR?delayms_100ms?DELAYMS
delayms_100ms:
	USING	0

DLY100S0: 	MOV  	R7,#0BFH
DLY100S1: 	MOV  	R6,#0EFH
DLY100S2: 
	  	DJNZ 	R6,DLY100S2
	  	DJNZ 	R7,DLY100S1

DLY100S3:	MOV R6,#141
DLY100S4:       DJNZ R6,DLY100S4
		NOP

	RET  	
; END OF delayms_100ms

; 
; void delayms_1000ms()

	RSEG  ?PR?delayms_1000ms?DELAYMS
delayms_1000ms:
	USING	0


DLY1000S0:	MOV R5,#8
DLY1000S1:	MOV R6 ,#239
DLY1000S2:	MOV R7 ,#239
DLY1000S3:
		DJNZ R7 ,DLY1000S3
		DJNZ R6 ,DLY1000S2
		DJNZ R5 ,DLY1000S1


DLY1000_S1:	MOV R6 ,#4
DLY1000_S2:	MOV R7 ,#235
DLY1000_S3:
		DJNZ R7 ,DLY1000_S3
		DJNZ R6 ,DLY1000_S2
           	  
		NOP
		NOP
		NOP

		NOP
		NOP
		NOP

	RET  	
; END OF delayms_1000ms

	END