EM78P153范例程序

BS PORT6,OUTPUT

CALL JUDGE_REPEAT_CODE ;扫描引导码是否在重复?

JBS FLAG,LEAD

JMP SCAN_LEAD_CODE

JBC FLAG,REPEAT

JMP REP ;引导码是重复,继续扫描

JMP RECEIVE_DATA_PROCEE ;引导码不重复,去接收新数据

;****************引导码的检测子程序*****************

JUDGE_START_CODE:

CLR COUNTER ;清计数器

JUDGE_START_CODE_0:

JBC PORT6,INPUT

JMP NO_HIGH

CALL DELAY0.5MS

JBC PORT6,INPUT

JMP NO_HIGH

INC COUNTER

JMP JUDGE_START_CODE_0

NO_HIGH:

MOV A,COUNTER

BC PSW,C

SUB A,@20 ;20-A

JBS PSW,C

JMP EXIT_0 ;C=1,COUNTER>20

MOV A,COUNTER

BC PSW,C

SUB A,@16 ;16-A

JBC PSW,C

JMP EXIT_0 ;C=0,COUNTER<16

BS FLAG,LEAD

EXIT_0:

JBC PORT6,INPUT

JMP EXIT_0

INC REPEAT_COUNTER

RET

;****************接收数据子程序**********************

RECEIVE_DATA:

MOV A,@8

MOV COUNTER,A

MOV A,@0B00100000

CONTW ;停止记数

CONTINUE_1:

JBS PORT6,INPUT

JMP CONTINUE_1

CLR TCC

MOV A,@0B00000100

CONTW ;TCC开始记数

CONTINUE_2:

MOV A,TCC

MOV TEMP,A

BC PSW,C

SUB A,@250

JBS PSW,C

JMP SCAN_LEAD_CODE ;C=0,TCC>250

 

JBC PORT6,INPUT

JMP CONTINUE_2

MOV A,TCC

MOV TEMP,A

BC PSW,C

SUB A,@60;142

JBC PSW,C

JMP X1 ;C=1,TCC<60

JMP X2 ;C=0,TCC>60

X1:

BC TEMPCODE,0

JMP EXIT_1

X2:

BS TEMPCODE,0

JMP EXIT_1

EXIT_1:

DJZ COUNTER

JMP HH

MOV A,@0B00100000

CONTW ;停止记数

RET

HH:

BC PSW,C

RLC TEMPCODE

JMP CONTINUE_1

 

;****************发送数据子程序**********************

TRANSMIT_DATA:

MOV A,@4

MOV COUNTER,A

MOV A,USER_CODE ;@0B10010000 ;发送ST的用户码

MOV SEND_DATA,A

CYCLE_1:

JBS SEND_DATA,7

JMP SEND_P_0

JMP SEND_P_1

SEND_P_1:

CALL SEND_CODE_1

JMP EXIT_3

SEND_P_0:

CALL SEND_CODE_0

JMP EXIT_3

EXIT_3:

RLC SEND_DATA

DJZ COUNTER

JMP CYCLE_1

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