共陰數碼管段選程序，拿走，不謝，你試試，可不可以驅動數碼管
#include "reg52.h"
typedef unsigned char u8;
typedef unsigned int u16;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
u8 code smgduan[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,
0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; //共陰
void delay(u16 i)
{
while(i--);
}
void DiaDisplay()
{
u8 i;
for(i=0;i<8;i++)
{
switch(i)
{
case(0):
LSA=0;LSB=0;LSC=0;break;
case(1):
LSA=1;LSB=0;LSC=0;break;
case(2):
LSA=0;LSB=1;LSC=0;break;
case(3):
LSA=1;LSB=1;LSC=0;break;
case(4):
LSA=0;LSB=0;LSC=1;break;
case(5):
LSA=1;LSB=0;LSC=1;break;
case(6):
LSA=0;LSB=1;LSC=1;break;
case(7):
LSA=1;LSB=1;LSC=1;break;
}
P0=smgduan[i+1];
delay(50000);
P0=0x00;
}
}
void main()
{
while(1)
{
DiaDisplay();
}
} |
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