这个程序错在哪了，求大神指教

只看该作者 · 2013-6-5 22:52

KEY1    BIT P3.2
KEY2    BIT P3.3
KEY3    BIT P3.5
DISPRAM DATA  30H                ；显示数字的暂存
HOUR_REG  DATA  38H
MINU_REG  DATA  39H
SECO_REG  DATA  3AH
T0_COUNT  DATA  3BH
DISP_COUNT  DATA  3CH

      ORG 0000H                   ；主程序的入口
      LJMP  MAIN
      ORG 000BH                   ；定时//器T0中断程序入口
      LJMP  T0_TIME
      ORG 0030H
MAIN:    MOV SP, #3FH                ；//堆栈指针设置堆栈地址存放
      MOV HOUR_REG, #0
      MOV MINU_REG, #0
      MOV SECO_REG, #0
      MOV TMOD, #11H; //选择工作方式1
      MOV IE, #82H;  // EA=1,CPU开放中断 ET0=1，使能定时器T0溢出中断
      SETB  TR0          // 开定时计数器
MAIN1: LCALL TIME2STR // 调用时间数据显示
      MOV R0, #DISPRAM
      LCALL DISPLAY
      JB KEY1, MAIN1
      LCALL TIME_SET
      SJMP  MAIN1
;---------------------------------------
;时间数据显示字符串功能
;---------------------------------------
TIME2STR: MOV R0, #DISPRAM    //时间数据显示
      MOV A, HOUR_REG
      MOV B, #10
      DIV AB
      MOV @R0, A
      MOV A, B
      INC R0
      MOV @R0, A
      MOV A, MINU_REG
      MOV B, #10
      DIV AB
      INC R0
      MOV @R0, A
      MOV A, B
      INC R0
      MOV @R0, A
      MOV A, SECO_REG
      MOV B, #10
      DIV AB
      INC R0
      MOV @R0, A
      MOV A, B
      INC R0
      MOV @R0, A
      RET
;
;---------------------------------------
;设定的时间功能
;---------------------------------------
TIME_SET: CLR TR0                         //关定时计数器
      MOV SECO_REG, #0                //把秒清零
      LCALL TIME2STR
TIME_S1:  MOV R0, #DISPRAM
      LCALL DISPLAY
      JNB KEY1, TIME_S1
      MOV R2, #2
TIME_S2:  MOV A, R2
      JZ TIME_S3
      LCALL TIME2STR
      CJNE  R2, #2, TIME_S21
      ORL DISPRAM, #80H
      ORL DISPRAM+1, #80H
      SJMP  TIME_S22
TIME_S21: ORL DISPRAM+2, #80H
      ORL DISPRAM+3, #80H
TIME_S22: MOV R0, #DISPRAM
      LCALL DISPLAY
      JB KEY1, TIME_S23
      DEC R2
TIME_S221:MOV R0, #DISPRAM
      LCALL DISPLAY
      JNB KEY1, TIME_S221
TIME_S23: JB KEY2, TIME_S2
      CJNE  R2, #2, TIME_S231
      INC HOUR_REG
      MOV A, HOUR_REG
      CJNE  A, #24, TIME_S232
      MOV HOUR_REG, #0
      SJMP  TIME_S232
TIME_S231:INC MINU_REG
      MOV A, MINU_REG
      CJNE  A, #60, TIME_S232
      MOV MINU_REG, #0
TIME_S232:MOV R3, #20
TIME_S233:MOV R0, #DISPRAM
      LCALL DISPLAY
      DJNZ  R3, TIME_S233
      SJMP  TIME_S2
TIME_S3:  SETB  TR0
      RET
;
;---------------------------------------
;  显示功能
;6个LED数码管
;---------------------------------------
DISPLAY:  PUSH  ACC          // 把ACC（累加器）中的数字压入堆栈
      PUSH  DPH       //  把16位指针高8位压入堆栈
      PUSH  DPL
      PUSH  PSW    // 状态字入栈保护【保护现场】
      MOV A, R4
      PUSH  ACC    // 保存寄存器的数字R4、R5、R6、R7
      MOV A, R5
      PUSH  ACC
      MOV A, R6
      PUSH  ACC
      MOV A, R7
      PUSH  ACC
      INC DISP_COUNT
      ANL DISP_COUNT, #7FH //相与，闪烁，让灯可以由亮转为灭
      MOV R5, #8
      MOV R4, #01H
      MOV DPTR, #DISPTABLE
DISPL1: MOV A, @R0
      PUSH  ACC
      MOV P2, R4
      ANL A, #80H
      JZ DISPL11
      MOV A, DISP_COUNT
      SUBB  A, #32
      JNC DISPL11
      MOV P2, #0
DISPL11:  POP ACC
      ANL A, #7FH
      MOVC  A, @A+DPTR
      MOV P0, A
      MOV R6, #00H
      MOV R7, #01H
      LCALL DELAY
      MOV P0, #0FFH
      INC R0
      MOV A, R4
      RL A
      MOV R4, A
      DJNZ  R5, DISPL1
      POP ACC
      MOV R7, A
      POP ACC
      MOV R6, A
      POP ACC
      MOV R5, A
      POP ACC
      MOV R4, A
      POP PSW
      POP DPL
      POP DPH
      POP ACC
      RET
DISPTABLE:DB 0C0H,0F9H,0A4H,0B0H, 99H, 92H, 82H,0F8H, 80H, 90H, 88H, 83H,0C6H,0A1H, 86H, 8EH,0BFH, 89H,0C7H, 8CH,0FFH
      ;    "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "-", "H", "L", "P", " "
;
;--------------------------------------
延迟功能。
;延迟时间=(R6R7)(ms)
;--------------------------------------
DELAY: PUSH  ACC
      MOV A, R4
      PUSH  ACC
      MOV A, R5
      PUSH  ACC
      MOV A, R7
      JZ DELAY01
      INC R6
DELAY01:  MOV R4, #02H
      MOV R5, #0F4H
DELAY02:  DJNZ  R5, $
      DJNZ  R4, DELAY02
      DJNZ  R7, DELAY01
      DJNZ  R6, DELAY01
      POP ACC
      MOV R5, A
      POP ACC
      MOV R4, A
      POP ACC
      RET
;
;--------------------------------------
;用T0的中断功能
;--------------------------------------
T0_TIME:  MOV TL0, #0B0H
      MOV TH0, #3CH
      PUSH  PSW
      PUSH  ACC
      INC T0_COUNT
      MOV A, T0_COUNT
      SUBB  A, #20
      JC T0_OUT
      MOV T0_COUNT, #0
      INC SECO_REG
      MOV A, SECO_REG
      SUBB  A, #60
      JC T0_OUT
      MOV SECO_REG, #0
      INC MINU_REG
      MOV A, MINU_REG
      SUBB  A, #60
      JC T0_OUT
      MOV MINU_REG, #0
      INC HOUR_REG
      MOV A, HOUR_REG
      SUBB  A, #24
      JC T0_OUT
      MOV HOUR_REG, #0
T0_OUT: POP ACC
      POP PSW
      RETI
;
END
2.7.2. C语言程序编译
#include<reg51.h>
#define uchar unsigned char
#define uint  unsigned int
#define ulong unsigned long
sbit BUZZ=P3^7;
sbit KEY1=P1^0;
sbit KEY2=P1^1;
uchar hour_reg,minute_reg,second_reg;
void delay(uint);
void display(uchar*);
void time2str(uchar*);
void time_set(void);

void main(void)
{
  uchar dispram[8];
  TMOD=0x11;                选择工作方式1
  IE=0x82;                   EA=1,CPU开放中断 ET0=1，使能定时器T0溢出中断
  TR0=1;                   开定时计数器
  while(1)
  {
time2str(dispram);
display(dispram);
if(KEY1==0) time_set();
}
}

void time2str(uchar*ch)
{
ch[0]=hour_reg/10;          显示小时的高位
ch[1]=hour_reg%10;       显示小时的低位
ch[2]=minute_reg/10;                显示分钟的高位
ch[3]=minute_reg%10;                显示分钟的低位
ch[4]=second_reg/10;                   显示秒的高位
ch[5]=second_reg%10;                显示秒的低位
}

void time_set(void)
{
  uchar ch[6];
  uchar i,c;
  TR0=0;                               关定时计数器
  second_reg=0;                         秒钟清零
  time2str(ch);
do
  { display(ch);}
while(KEY1==0);
c=2;
while(c)
{
  time2str(ch);
  if(c==2) {ch[0]|=0x80;ch[1]|=0x80;}       最高位补1
  else { ch[2]|=0x80;ch[3]|=0x80;}
  display(ch);
  if(KEY1==0)
  {
c--;
do{  display(ch);
      }
  while(KEY1==0);
  }
if(KEY2==0)
{
  if(c==2) hour_reg=(hour_reg+1)%24;             恢复显示小时
   else minute_reg=(minute_reg+1)%60;          恢复显示分钟
  for(i=0;i<50;i++) display(ch);
}
}
TR0=1;                                           开定时计数器
}
void delay_ms(unsigned int dt)
{
  register unsigned char bt ,ct;
  for(;dt;dt--)
  for(ct=2;ct;ct--)
  for(bt=250;--bt;);                         延时2*2*250=1ms
  }

void display(uchar*disp_ram)
{
static uchar disp_count;
unsigned char i,j;
unsigned char code table[]=
{0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf,0xff};
disp_count=(disp_count+1)&0x7f;
for(i=0;i<6;i++)
{
j=disp_ram[i];
if(j&0x80) P0=(disp_count>32)? table[j&0x7f]:0xff; 32/128=1/4,1/4的时间灯灭
else P0=table[j];
P2=0x01<<i;
delay_ms(1);
P0=0xff;
P2=0;
}
}

void T0_time(void) interrupt 1
  {
static uchar T0_count=0;
TL0=0xb0;                               2^16-15536=50000us=50ms
TH0=0x3c;
T0_count++;
if(T0_count>=20)                            循环20次延时1s
{
   T0_count=0;                               当1s延时到，秒钟数字加1
   second_reg++;
   if(second_reg>=60)
   {
      second_reg=0;                            秒清零，分加1
minute_reg++;
if(minute_reg>=60)
{
   minute_reg=0;
   hour_reg=(hour_reg+1)%24;             24小时的记数
   }
      }