;顯示字用查表法，不占內(nèi)存，用四個16*16共陽LED點陣顯示，
;效果：向上滾動顯示字，每次四個，重復循環(huán)。
;R2：行掃描地址(從00-0FH)。
;R3：滾動顯示時控制移動速度，也可控制靜止顯示的時間。
ORG0000H
AJMPSTART
ORG000BH;T0
AJMPINTT0
ORG0030H
;***************初始化程序;
START: MOV P2,#7FH;清LED
MOV 20H,#00H;清標志,00H為1幀掃描結(jié)束標志
CLRP1.6;串行寄存器打入輸出端控制位
MOV TMOD,#01H;使用T0作16位定時器,行掃描用。
MOV TH0,#0FCH;1ms初值(12MHz)
MOV TL0,#18H
MOV SCON,#00H;串口0方式傳送顯示字節(jié)
MOV IE,#82H;T0中斷允許,總中斷允許
MOV SP,#70H
LCALLDIS1;顯示準備，黑屏，1.5秒
MAIN: MOV DPTR,#TAB
LCALL MOV DISP;逐排顯示，每次四字)
MOV DPTR,#TAB
LCALL MOV DISP1;滾動顯示，每排四字)
AJMPMAIN
;四字逐排顯示子程序;
;每次四字移入移出顯示方式，入口時定義好DPTR值
MOV DISP:MOVR1,#6;顯示6排字,每排四字(R1=排數(shù))
DISLOOP: MOV R3,#100;每排顯示時間1.6*100=1.6S
DIS MOV :MOVR2,#00H;第0行開始
SETBTR0;開掃描（每次一幀）
WAIT MOV :JBC00H,DISMOV1;標志為1掃描一幀結(jié)束（16毫秒為1幀，每行1毫秒）
AJMPWAIT MOV
DIS MOV 1:DJNZR3,DISMOV;1幀重復顯示（控制顯示時間）
MOV A,#128;顯示字指針移一排（每排4字*32=128）
ADDA,DPL;
MOV DPL,A
MOV A,#0
ADDCA,DPH
MOV DPH,A
DECR1;R1為0，顯示完
MOV A,R1
JZ MOV OUT;
AJMPDISLOOP;
MOV OUT:RET;移動顯示結(jié)束
;********************;
;四字滾動顯示子程序;
;每排四字向上移出顯示方式，入口時定義好DPTR值
MOV DISP1:MOVR1,#255;向上移動顯示6排字,每排四字(R1=排數(shù)*16)
DISLOOP1: MOV R3,#10;移動速度1.6*10=0.16S
DIS MOV 2:MOVR2,#00H;第0行開始
SETBTR0;開掃描（每次一幀）
WAIT MOV 1:JBC00H,DISMOV3;標志為1掃描一幀結(jié)束（16毫秒為1幀，每行1毫秒）
AJMPWAIT MOV 1
DIS MOV 3:DJNZR3,DISMOV2;1幀重復顯示（控制移動速度）
INCDPTR;顯示字指針移一行（二字節(jié)位置）
INCDPTR
DECR1;R1為0，顯示完
MOV A,R1
JZ MOV OUT1;
AJMPDISLOOP1;
MOV OUT1:RET;移動顯示結(jié)束
;*****************;
;四個字顯示子程序;
;靜止顯示表中某四個字
DIS1: MOV R3,#5AH;靜止顯示時間控制（16MS*#=1.6秒）
DIS11: MOV R2,#00H;一幀掃描初始值（行地址從00-0FH）
MOV DPTR,#TAB;取表首址
SETBTR0;開掃描（每次一幀）
WAIT11:JBC00H,DIS111;為1，掃描一幀結(jié)束
AJMPWAIT11
DIS111:DJNZR3,DIS11
RET
;掃描程序;
;************;
;1MS傳送一行，每行顯示1毫秒,一次傳送四個字的某行共8個字節(jié).
INTT0:PUSHACC
MOV TH0,#0FCH;1ms初值重裝
MOV TL0,#18H
MOV A,#97;指向第四個字行右字節(jié)
ADDA,DPL
MOV DPL,A
MOV A,#0
ADDCA,DPH
MOV DPH,A
MOV A,#0
MOV CA,@A+DPTR;查表
MOV SBUF,A;串口0方式發(fā)送
WAIT:JBCTI,GO;等待發(fā)送完畢
AJMPWAIT;
GO: MOV A,DPL;指向第四個字行左字節(jié)
SUBBA,#1
MOV DPL,A
MOV A,DPH
SUBBA,#0
MOV DPH,A
MOV A,#0
MOV CA,@A+DPTR
MOV SBUF,A
WAIT1:JBCTI,GO1
AJMPWAIT1
;
GO1: MOV R0,#03H
MLOOP: MOV A,DPL;指向前三個字行右字節(jié)
SUBBA,#31
MOV DPL,A
MOV A,DPH
SUBBA,#0
MOV DPH,A
MOV A,#0
MOV CA,@A+DPTR;查表
MOV SBUF,A;串口0方式發(fā)送
WAIT2:JBCTI,GO2;等待發(fā)送完畢
AJMPWAIT2;
GO2: MOV A,DPL;指向前三個字行左字節(jié)
SUBBA,#1
MOV DPL,A
MOV A,DPH
SUBBA,#0
MOV DPH,A
MOV A,#0
MOV CA,@A+DPTR
MOV SBUF,A
WAIT3:JBCTI,GO3
AJMPWAIT3
GO3:DJNZR0,MLOOP;執(zhí)行三次
SETBP1.7;關(guān)行顯示，準備涮新
NOP;串口寄存器數(shù)據(jù)穩(wěn)定
SETBP1.6;產(chǎn)生上升沿，行數(shù)據(jù)打入輸出端
NOP;
NOP;
CLRP1.6;恢復低電平
MOV A,R2;修改顯示行地址
ORLA,#0F0H;修改顯示行地址
MOV R2,A;修改顯示行地址
MOV A,P1;修改顯示行地址
ORLA,#0FH;修改顯示行地址
ANLA,R2;修改顯示行地址
MOV P1,A;修改完成
CLRP1.7;開行顯示
INCR2;下一行掃描地址值
INCDPTR;
INCDPTR;下一行數(shù)據(jù)地址
MOV A,R2
ANLA,#0FH
JNZGO4
SETB00H;R2為10H，現(xiàn)為末行掃描，置1幀結(jié)束標志
MOV A,DPL;指針修正為原幀初值
SUBBA,#32
MOV DPL,A
MOV A,DPH
SUBBA,#0
MOV DPH,A
CLRTR0;一幀掃描完，關(guān)掃描
GO4:POPACC
RETI;退出
;***************;
;掃描文字表;
;***************;
;共五排字,每排四個字,前后為黑屏
TAB:
DB000H,0C0H,000H,0C0H,0FCH,0FCH,0FCH,0FCH,00DH,08CH,06DH,08CH,06BH,060H,038H,060H;
DB018H,060H,018H,060H,03CH,070H,064H,0D8H,0E1H,08CH,043H,006H,006H,000H,000H,000H;"歡"0
DB001H,080H,067H,0FCH,067H,07CH,036H,06CH,006H,06CH,0F6H,06CH,0F6H,06CH,036H,06CH;
DB036H,06CH,037H,07CH,036H,06CH,030H,060H,038H,000H,06FH,0FEH,0C7H,0FEH,000H,000H;"迎"1
DB001H,080H,001H,080H,031H,088H,019H,098H,019H,0B0H,009H,0A0H,0FFH,0FEH,0FFH,0FEH;
DB006H,0C0H,006H,0C0H,006H,0C0H,00CH,0C4H,018H,0C6H,0F0H,0FEH,060H,07CH,000H,000H;"光"2
DB000H,0C0H,018H,0C0H,0D9H,0FCH,0D9H,0FCH,0DBH,000H,0DEH,060H,0D8H,030H,0DBH,0FCH;
DB0DBH,0FCH,0DBH,06CH,0DBH,06CH,0DBH,06CH,0DBH,0FCH,01BH,0FCH,01BH,00CH,000H,000H;"臨"3
DB000H,000H,0FDH,0FCH,0FDH,0FCH,058H,060H,031H,0FCH,0FDH,08CH,0FDH,0ACH,035H,0ACH;
DB031H,0ACH,031H,0ACH,031H,0ACH,030H,060H,030H,0D8H,071H,08CH,063H,006H,000H,000H;"預"4
DB060H,000H,033H,0FCH,003H,0FCH,0FBH,00CH,0FBH,00CH,01BH,00CH,033H,0FCH,033H,0FCH;
DB079H,0B0H,0FDH,0B0H,035H,0B0H,031H,0B6H,033H,036H,03EH,03EH,034H,01CH,000H,000H;"祝"5
DB003H,000H,003H,000H,003H,000H,003H,000H,07FH,0FCH,07FH,0FCH,003H,000H,003H,000H;
DB003H,000H,007H,080H,006H,0C0H,00CH,060H,018H,030H,030H,018H,060H,00CH,000H,000H;"大"6
DB003H,000H,07FH,0FCH,07FH,0FCH,060H,00CH,01FH,0F0H,01FH,0F0H,006H,018H,01FH,030H;
DB077H,060H,00DH,0F0H,03BH,0D0H,076H,0D8H,00CH,0CCH,07BH,0C4H,063H,080H,000H,000H;"家"7
DB003H,000H,01FH,0F8H,01FH,0F8H,018H,018H,01FH,0F8H,018H,018H,01FH,0FAH,018H,01EH;
DB07FH,0FCH,07FH,0F8H,000H,0D8H,003H,098H,00FH,018H,07CH,078H,070H,070H,000H,000H;"身"8
DB018H,060H,018H,060H,030H,060H,037H,0FEH,077H,0FEH,070H,0E0H,0F1H,0F0H,0B1H,0F8H;
DB033H,068H,032H,064H,037H,0FEH,03DH,0FAH,030H,060H,030H,060H,030H,060H,000H,000H;"體"9
DB030H,030H,03EH,0FCH,03EH,0FCH,066H,034H,067H,0FEH,0EDH,0FEH,0EEH,034H,06EH,0FCH;
DB062H,030H,06AH,0FCH,06EH,030H,064H,0FEH,06EH,030H,07BH,0FEH,060H,0FEH,000H,000H;"健"10
DB001H,080H,07FH,0FEH,07FH,0FEH,061H,080H,06FH,0F8H,061H,098H,07FH,0FEH,061H,098H;
DB06FH,0F8H,069H,0C0H,06DH,0D8H,067H,0B0H,06DH,09CH,0D9H,08CH,043H,080H,000H,000H;"康"11
DB000H,000H,0FFH,0FCH,0FFH,0FCH,006H,000H,006H,000H,007H,0F0H,007H,0F0H,00CH,030H;
DB00CH,030H,00CH,030H,018H,030H,018H,030H,030H,030H,061H,0E0H,0C0H,0C0H,000H,000H;"萬"12
DB001H,080H,07FH,0FEH,07FH,0FEH,001H,080H,03FH,0F8H,031H,098H,03FH,0F8H,001H,080H;
DB03FH,0FCH,001H,08CH,0FFH,0FEH,001H,08CH,03FH,0FCH,001H,080H,007H,000H,000H,000H;"事"13
DB018H,000H,018H,000H,018H,0FCH,0FEH,0FCH,0FEH,0CCH,036H,0CCH,036H,0CCH,036H,0CCH;
DB066H,0CCH,036H,0CCH,01CH,0CCH,01CH,0FCH,036H,0FCH,062H,0CCH,0C0H,000H,000H,000H;"如"14
DB001H,080H,07FH,0FCH,07FH,0FCH,00CH,060H,07FH,0FEH,000H,000H,01FH,0F8H,018H,018H;
DB01FH,0F8H,018H,018H,01FH,0F8H,001H,000H,02DH,08CH,06CH,0B6H,0C7H,0F2H,000H,000H;"意"15
DB000H,000H,03FH,0F8H,03FH,0F8H,001H,080H,001H,080H,001H,080H,07FH,0FEH,07FH,0FEH;
DB001H,080H,003H,0C0H,006H,060H,00CH,030H,018H,018H,070H,00EH,060H,006H,000H,000H;"天"16
DB000H,000H,03FH,0F8H,03FH,0F8H,001H,080H,001H,080H,001H,080H,07FH,0FEH,07FH,0FEH;
DB001H,080H,003H,0C0H,006H,060H,00CH,030H,018H,018H,070H,00EH,060H,006H,000H,000H;"天"17
DB000H,000H,07FH,0FCH,07FH,0FCH,00CH,060H,00CH,060H,00CH,060H,0FFH,0FEH,0FFH,0FEH;
DB00CH,060H,00CH,060H,00CH,060H,018H,060H,018H,060H,070H,060H,020H,060H,000H,000H;"開"18
DB000H,000H,003H,000H,001H,080H,000H,080H,000H,000H,006H,010H,036H,018H,036H,00CH;
DB066H,006H,066H,006H,046H,010H,006H,018H,007H,0F8H,003H,0F0H,000H,000H,000H,000H;"心"19
END
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