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*<BR>;***************************************************************************</FONT><BR>;232通信程序，適用于倚天版，4800波特率，用工具軟件的串口調(diào)試軟件即可。在串口調(diào)試中輸入數(shù)字倚;天版的數(shù)碼管顯示相應(yīng)的數(shù)字，計算機控制單片機的典型應(yīng)用。<BR>ORG
0000H ;開始 <BR>AJMP main0<BR>ORG 0030H <BR>main0: MOV SP,#5FH
;設(shè)置堆棧 <BR>MOV TMOD,#22H<BR>MOV SCON,#40H<BR>MOV TH1,#0F3H
;設(shè)置速率4800,(12M晶體）<BR>MOV PCON,#80H<BR>SETB TR1<BR>clr p2.6
;開數(shù)碼管的最后一位<BR>SETB REN ;允許接收<BR>loop:jbc ri,rec<BR>;jmp loop<BR>mov
p0,#0ffh<BR>rec: mov a,sbuf;緩沖數(shù)據(jù)送到a<BR>mov p1,a<BR>CJNE
A,#00110001b,T00<BR>MOV P0,#07eH ;數(shù)碼管顯示2<BR>; call delay<BR>mov
p0,#0ffh<BR>t00: CJNE A,#00110010b,T2<BR>MOV P0,#0A2H ;數(shù)碼管顯示2<BR>; call
delay<BR>mov p0,#0ffh<BR>T2: CJNE A,#00110011b,T3<BR>MOV P0,#62H<BR>; call
delay<BR>; mov p0,#0ffh<BR>T3: CJNE A,#00110100b,T4<BR>MOV
P0,#74H<BR>;call delay<BR>;mov p0,#0ffh<BR>T4: CJNE A,#00110101b,T5<BR>MOV
P0,#61H<BR>; call delay<BR>; mov p0,#0ffh<BR>T5: CJNE
A,#00110110b,T6<BR><BR>MOV P0,#21H<BR>; call delay<BR>;mov p0,#0ffh<BR>T6:
CJNE A,#00110111b,T7<BR>MOV P0,#7AH<BR>; call delay<BR>;mov
p0,#0ffh<BR>T7: CJNE A,#00111000b,T8<BR>MOV P0,#20H<BR>; call
delay<BR>;mov p0,#0ffh<BR>T8: CJNE A,#00111001b,t9<BR>MOV P0,#60H<BR>;
call delay<BR>;mov p0,#0ffh<BR>T9: CJNE A,#00110000b,t10<BR>MOV
P0,#28H<BR>; call delay<BR><BR>t10:ljmp loop<BR>delay: mov r7,#00h
;延時子程序<BR>tt: mov r6,#00h<BR>djnz r6,$<BR>djnz
r7,tt<BR>ret<BR>end<BR><BR>end
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