ydjc.asm

汇编程序(cygnal c8051f021)

$INCLUDE(C8051F020.INC)
DIN					BIT P1.1
LOAD				BIT P1.2
CLK					BIT P1.3
DAT1				DATA 020H
DAT2				DATA 021H
C0					DATA 030H
ORG 0000H
AJMP START
ORG 0003H
LJMP EINT0
ORG 000BH
LJMP T0INT
ORG 0013H
LJMP EINT1
ORG 001BH
LJMP T1INT
ORG 0100H
START:			MOV WDTCN,#0DEH										//SHUT WATCH DOG
						MOV WDTCN,#0ADH
SYSCLK:			MOV OSCXCN,#067H									//EXTERNAL OSCILLATE
						CLR A															//SYSTEM CLOCK 12M
						DJNZ ACC,$
						DJNZ ACC,$
LOKUP:			MOV A,OSCXCN
						JNB ACC.7,LOKUP
						ORL OSCICN,#08H
SETUP:			MOV XBR2,#040H										//交叉开关使能
						MOV XBR1,#014H
						MOV XBR0,#004H
						MOV P0MDOUT,#0FFH
						MOV P1MDOUT,#0FFH
						MOV P2MDOUT,#0FFH
						MOV TMOD,#011H										//T0,T1 RESET
EINT:				SETB EX0													//EABLE INT
						SETB IT0
						SETB EX1
						SETB IT1
MAIN:				


















RS7219:	  MOV DAT1,#09H 										  //硬件译码
					MOV DAT2,#0FFH 
					LCALL SEND
					MOV DAT1,#0AH 											//强度5
					MOV DAT2,#04H
					LCALL SEND
					MOV DAT1,#0BH 											//限扫
					MOV DAT2,#03H
					LCALL SEND						
					MOV DAT1,#0CH												// 启动	
					MOV DAT2,#01H
					LCALL SEND
					RET

SEND:			MOV R0,#08H													//SEND			
					CLR LOAD	
					MOV 040H,A
					PUSH 040H
SENDLOOP: CLR CLK										
					MOV C,DAT1.7
					MOV DIN,C
					SETB CLK
					MOV A,DAT1
					RL A
					MOV DAT1,A
					DJNZ R0,SENDLOOP
SEND1:		MOV R3,#08H
SENDLOOP1:CLR CLK
					MOV C,DAT2.7
					MOV DIN,C
					SETB CLK
					MOV A,DAT2
					RL A
					MOV DAT2,A
					DJNZ R3,SENDLOOP1
					SETB LOAD
					POP 040H
					MOV A,040H
					RET
INT0:			CLR IE
					CLR TR0
					



T0INT:		MOV TH0,#0ECH												//DELAY 5MS LOOP(T0 INT)																						
					MOV TL0,#078H
					SETB TR0
					CLR C
					INC C0
					JNC JP
					SETB F0
					SJMP JP
JP:				CLR F0
					RETI