📄 被叫测试程序.asm
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;以下是pc机所接modem呼叫mcu所接modem的程序
CHARNUM0 EQU 6H ;要发送字符串0的数量;
CHARNUM1 EQU 8H ;要发送字符串1的数量;
CHARNUM2 EQU 3H ;要发送字符串2的数量;
CHARNUM3 EQU 5H ;要发送字符串3的数量;
COMMBUF EQU 30H ;接收AT命令执行后返回的结果码的区域首址;
TIME1 EQU 0FAH ;延时程序中用到的两个变量
TIME2 EQU 0F9H
;******************主程序
ORG 0000H
LJMP MAIN
ORG 0023H
LJMP ZD ;转至中断服务程序
ORG 0030H
MAIN: MOV SCON,#50H ;将串行口设置为方式1，REN=1
MOV SP,#10H
MOV TMOD,#20H ;定时器1设为模式2
MOV TL1,#0F4H ;定时器初值，晶振为11.0592Mhz，波特率为2400bps
MOV TH1,#0F4H ;8位重装值
SETB TR1 ;启动定时器1
SETB ES ;允许串行中断
CLR EA ;关中断
CLR P0.0
SETB P0.1
SETB P0.2
;***************发送AT0 命令
FSAT0: MOV R2,#CHARNUM0 ;要发送字符的数量
MOV R0,#0H
MOV DPTR,#CODE0 ;CODE0为发送字符的地址
MOV R1,#COMMBUF
MOV R4,#0H
CLR RI
ACALL LOOP
BRR1: JBC RI,SUN0 ;查询接收标志位
SJMP BRR1
SUN0: ACALL LIN
CJNE R4,#7,BRR1
CLR RI
MOV R1,#COMMBUF ;结果码的校验
JIAOYAN0: MOV A,@R1
CJNE A,#4FH,JXJIAOYAN0
DEC R4
INC R1
PDK2: MOV A,@R1
CJNE A,#4BH,PDK
AJMP DELY
JXJIAOYAN0: DJNZ R4,JUMPER0
AJMP ZHONGJI0
JUMPER0: INC R1
AJMP JIAOYAN0
ZHONGJI0: LJMP FSAT0
PDK: DJNZ R4,PDK1
AJMP ZHONGJI0
PDK1: INC R1
AJMP PDK2
DELY: ACALL DELY0
MOV R1,#COMMBUF
ACALL NEXT
;***************发送AT1 命令
FSAT1: MOV R2,#CHARNUM1 ;要发送字符的数量
MOV R0,#0H
MOV DPTR,#CODE1 ;CODE0为发送字符的地址
MOV R1,#COMMBUF
MOV R4,#0H
ACALL LOOP
BRR3: JBC RI,SUN1
SJMP BRR3
SUN1: ACALL LIN
CJNE R4,#7,BRR3
CLR RI
MOV R1,#COMMBUF ;结果码的校验
JIAOYAN1: MOV A,@R1
CJNE A,#4FH,JXJIAOYAN1
DEC R4
INC R1
PDK5: MOV A,@R1
CJNE A,#4BH,PDK3
AJMP COMMA
JXJIAOYAN1: DJNZ R4,JUMPER1
AJMP ZHONGJI1
JUMPER1: INC R1
AJMP JIAOYAN1
ZHONGJI1: LJMP FSAT1
PDK3: DJNZ R4,PDK4
AJMP ZHONGJI1
PDK4: INC R1
AJMP PDK5
COMMA: ACALL NEXT
COMMA1: CLR RI
MOV R4, #0
MOV R1,#20H
SETB EA
SETB ES
ACALL DELAY
ACALL DELAY
ACALL DELAY
CLR EA
CLR ES
MOV R1,#20H ;结果码的校验
JIAOYAN01: MOV A,@R1
CJNE A,#43H,JXJIAOYAN01
DEC R4
INC R1
MOV A,@R1
CJNE A,#4FH,JXJIAOYAN01
CLR EA
CLR ES
AJMP GOHOME
JXJIAOYAN01: DJNZ R4,JUMPER01 ;＊要标志第一行命令发送不成功
AJMP COMMA1
JUMPER01: INC R1
AJMP JIAOYAN01
GOHOME: ACALL DELAY
ACALL DELAY
ACALL DELAY
ACALL DELAY
ACALL DELAY
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CLR P0.1
CLR RI
MOV R1,#40H
BBC : JBC RI,SUN011 ;查询接收标志位
SJMP BBC
SUN011:ACALL LIN
CLR P0.2
SJMP BBC
;****************中断服务程序
ZD : CLR EA
JB RI,JUST ;RI=1，为接收中断
SJMP OVER
JUST: MOV A,SBUF
MOV @R1,A
INC R1
INC R4 ;记录接收到字符的数量
CLR RI
OVER: SETB EA
RETI ;中断返回
NEXT: MOV R1,#COMMBUF
NEXT1: MOV @R1,#0
INC R1
CJNE R1,#40H,NEXT1
RET
;***********************************
LOOP: CLR TI
MOV A,R0
MOVC A,@A+DPTR
MOV SBUF,A
JNB TI,$
INC R0
DJNZ R2,LOOP
CLR TI
RET
;************************
LIN: CLR RI
MOV A,SBUF
MOV @R1,A
INC R1
INC R4
RET
;*****************延时子程序
DELY0: MOV R0,#100
DELY1: MOV R2,#100
DELY2: DJNZ R2,DELY2
DJNZ R0,DELY1
RET
DELAY: MOV R3,#TIME1
LOOP2: MOV R5,#TIME2
NOP
NOP
LOOP1: DJNZ R5,LOOP1
DJNZ R3,LOOP2 ;延时时间等于（4+10*TIME2+20*TIME1）*机器周期
RET
CODE0: DB 'A','T','&','F',0AH,0DH ;恢复出厂设置
CODE1: DB 'A','T','S','0','=','1',0AH,0DH ;
CODE2: DB '+','+','+' ;由on-line状态返回到command状态
CODE3: DB 'A','T','H',0AH,0DH ;挂机,结束通话
END
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