.module RTC.c
.area data(ram, con, rel)
_Table::
.blkb 2
.area idata
.byte 63,6
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 91,'O
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 'f,'m
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 125,7
.area data(ram, con, rel)
.blkb 2
.area idata
.byte 127,'o
.area data(ram, con, rel)
.blkb 6
.area idata
.byte 0,0,0,0,0,0
.area data(ram, con, rel)
.dbfile J:\AVRpractice\BOOK\定时器2\RTC.c
.dbsym e Table _Table A[16:16]c
_Data::
.blkb 2
.area idata
.byte 0,0
.area data(ram, con, rel)
.dbfile J:\AVRpractice\BOOK\定时器2\RTC.c
.blkb 2
.area idata
.byte 0,0
.area data(ram, con, rel)
.dbfile J:\AVRpractice\BOOK\定时器2\RTC.c
.dbsym e Data _Data A[4:4]c
.area text(rom, con, rel)
.dbfile J:\AVRpractice\BOOK\定时器2\RTC.c
.dbfunc e DelayMs _DelayMs fV
; j -> R20,R21
; i -> R16,R17
.even
_DelayMs::
rcall push_gset1
.dbline -1
.dbline 13
; //***************FileName:Capature.C***************//
; //***************ICCAVR V6.30编译*****************//
;
; #include
; #define uchar unsigned char
; #define uint unsigned int
;
; //数码管字型表，对应0，1，2，3，4，5，6，7，8，9//
; uchar Table[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
; uchar Data[4]={0,0,0,0}; //定义初始时间：00：00
; uchar CNT; //定义中断计数次数
; void DelayMs(uint i) //Ms级延时，参数i为延时时间
; {uint j;
.dbline 14
; for(;i!=0;i--)
rjmp L5
L2:
.dbline 15
.dbline 15
ldi R20,8000
ldi R21,31
rjmp L9
L6:
.dbline 15
.dbline 15
.dbline 15
L7:
.dbline 15
subi R20,1
sbci R21,0
L9:
.dbline 15
cpi R20,0
cpc R20,R21
brne L6
X0:
.dbline 15
L3:
.dbline 14
subi R16,1
sbci R17,0
L5:
.dbline 14
cpi R16,0
cpc R16,R17
brne L2
X1:
.dbline -2
.dbline 16
; {for(j=8000;j!=0;j--) {;}}
; }
L1:
rcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r j 20 i
.dbsym r i 16 i
.dbend
.dbfunc e Display _Display fV
; sel -> R20
; i -> R22
; p -> R10,R11
.even
_Display::
rcall push_gset3
mov R10,R16
mov R11,R17
.dbline -1
.dbline 19
;
; void Display(uchar *p) //动态显示函数，参数p为待显示的数组名
; {uchar i,sel=0x01;
.dbline 19
ldi R20,1
.dbline 20
; for(i=0;i clr R22
rjmp L14
L11:
.dbline 21
.dbline 21
out 0x1b,R20
.dbline 22
mov R30,R22
clr R31
add R30,R10
adc R31,R11
ldd R30,z+0
clr R31
ldi R24, ldi R25,>_Table
add R30,R24
adc R31,R25
ldd R2,z+0
clr R3
ldi R24,255
ldi R25,0
sub R24,R2
sbc R25,R3
out 0x15,R24
.dbline 23
ldi R16,1
ldi R17,0
rcall _DelayMs
.dbline 24
lsl R20
.dbline 25
L12:
.dbline 20
inc R22
L14:
.dbline 20
cpi R22,4
brlo L11
.dbline -2
.dbline 26
; {PORTA=sel; //选通最右边的数码管
; PORTC=0xff-Table[p[i]]; //送字型码
; DelayMs(1); //显示延时
; sel=sel ; }
; }
L10:
rcall pop_gset3
.dbline 0 ; func end
ret
.dbsym r sel 20 c
.dbsym r i 22 c
.dbsym r p 10 pc
.dbend
.dbfunc e Init_IO _Init_IO fV
.even
_Init_IO::
.dbline -1
.dbline 29
;
; void Init_IO(void) //初始化I/O口
; {DDRA=0xff; //设置A口为推挽1输出
.dbline 29
ldi R24,255
out 0x1a,R24
.dbline 30
; PORTA=0xff;
out 0x1b,R24
.dbline 31
; DDRC=0xff; //设置C口为推挽1输出
out 0x14,R24
.dbline 32
; PORTC=0xff;
out 0x15,R24
.dbline -2
.dbline 33
; }
L15:
.dbline 0 ; func end
ret
.dbend
.dbfunc e Add_Second _Add_Second fV
; p -> R16,R17
.even
_Add_Second::
.dbline -1
.dbline 36
;
; void Add_Second(uchar *p)
; {p[3]++;
.dbline 36
mov R24,R16
mov R25,R17
adiw R24,3
mov R30,R24
mov R31,R25
ldd R24,z+0
subi R24,255 ; addi 1
std z+0,R24
.dbline 37
; if(p[3]==10) {p[3]=0;p[2]++;}
mov R30,R16
mov R31,R17
ldd R24,z+3
cpi R24,10
brne L17
.dbline 37
.dbline 37
clr R2
mov R30,R16
mov R31,R17
std z+3,R2
.dbline 37
mov R24,R16
mov R25,R17
adiw R24,2
mov R30,R24
mov R31,R25
ldd R24,z+0
subi R24,255 ; addi 1
std z+0,R24
.dbline 37
L17:
.dbline 38
; if(p[2]==6) {p[2]=0;p[1]++;}
mov R30,R16
mov R31,R17
ldd R24,z+2
cpi R24,6
brne L19
.dbline 38
.dbline 38
clr R2
mov R30,R16
mov R31,R17
std z+2,R2
.dbline 38
mov R24,R16
mov R25,R17
adiw R24,1
mov R30,R24
mov R31,R25
ldd R24,z+0
subi R24,255 ; addi 1
std z+0,R24
.dbline 38
L19:
.dbline 39
; if(p[1]==10) {p[1]=0;p[0]++;}
mov R30,R16
mov R31,R17
ldd R24,z+1
cpi R24,10
brne L21
.dbline 39
.dbline 39
clr R2
mov R30,R16
mov R31,R17
std z+1,R2
.dbline 39
mov R30,R16
mov R31,R17
ldd R24,z+0
subi R24,255 ; addi 1
std z+0,R24
.dbline 39
L21:
.dbline 40
mov R30,R16
mov R31,R17
ldd R24,z+0
cpi R24,6
brne L23
.dbline 40
.dbline 40
clr R2
std z+0,R2
.dbline 40
L23:
.dbline -2
.dbline 41
; if(p[0]==6) {p[0]=0;}
; }
L16:
.dbline 0 ; func end
ret
.dbsym r p 16 pc
.dbend
.dbfunc e main _main fV
; i ->
.even
_main::
.dbline -1
.dbline 44
;
; void main(void)
; {uchar i;
.dbline 45
; Init_IO(); //初始化I/O口
rcall _Init_IO
.dbline 46
; PORTA=0xff; //点亮以测试所有的数码管
ldi R24,255
out 0x1b,R24
.dbline 47
; PORTC=0x00;
clr R2
out 0x15,R2
.dbline 48
; DelayMs(300); //延时
ldi R16,300
ldi R17,1
rcall _DelayMs
.dbline 49
; PORTC=0xff; //熄灭所有的数码管
ldi R24,255
out 0x15,R24
.dbline 50
; ASSR=0x08; //异步时钟使能
ldi R24,8
out 0x22,R24
.dbline 51
; TCCR2=0x07; //32768的晶振1024分频作为T/C2的时钟源
ldi R24,7
out 0x25,R24
.dbline 52
; TIMSK=0x40; //T/C2溢出中断使能
ldi R24,64
out 0x39,R24
.dbline 53
; SREG=SREG|0x80; //全局中断使能
bset 7
rjmp L27
L26:
.dbline 55
; while(1)
; {Display(Data);
.dbline 55
ldi R16, ldi R17,>_Data
rcall _Display
.dbline 56
; if(CNT==32)
lds R24,_CNT
cpi R24,32
brne L29
.dbline 57
; {CNT=0;
.dbline 57
clr R2
sts _CNT,R2
.dbline 58
; Add_Second(Data);}
ldi R16, ldi R17,>_Data
rcall _Add_Second
.dbline 58
L29:
.dbline 59
L27:
.dbline 54
rjmp L26
X2:
.dbline -2
.dbline 60
; }
; }
L25:
.dbline 0 ; func end
ret
.dbsym l i 1 c
.dbend
.area vector(rom, abs)
.org 8
rjmp _Timer2
.area text(rom, con, rel)
.dbfile J:\AVRpractice\BOOK\定时器2\RTC.c
.dbfunc e Timer2 _Timer2 fV
.even
_Timer2::
st -y,R24
st -y,R25
in R24,0x3f
st -y,R24
.dbline -1
.dbline 64
;
; #pragma interrupt_handler Timer2:5
; void Timer2(void)
; {CNT=CNT+1;}
.dbline 64
lds R24,_CNT
subi R24,255 ; addi 1
sts _CNT,R24
.dbline -2
.dbline 64
L31:
ld R24,y+
out 0x3f,R24
ld R25,y+
ld R24,y+
.dbline 0 ; func end
reti
.dbend
.area bss(ram, con, rel)
.dbfile J:\AVRpractice\BOOK\定时器2\RTC.c
_CNT::
.blkb 1
.dbsym e CNT _CNT c
