单片机控制点阵为什么我这个函数正确,却不能正确显示0啊

ID:261485 · 发表于 2018-4-13 08:26

为什么我这个函数正确，却不能正确显示0啊

#include<reg51.h>
#include<intrins.h>
typedef unsigned char u8;
typedef unsigned int u16;
sbit SRCLK=P3^6; //宏定义sbit RCLK=P3^5;
sbit SER=P3^4;
void delay(u16 i) //延时函数
{
while(i--);
}
u8 ledduan[]=(0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00); //段选横向选中一排
u8 ledwei[]=(0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfb,0xfe); //位选纵向选中一列
void hc595sendbaty(u8 dat)
{ u8 a;
SRCLK=0; //为上升沿做准备 RCLK=0; for(a=0;a<8;a++) {} SER=dat>>7;
dat<<=1;
SRCLK=1; //产生上升沿 _nop_();
_nop_();
SRCLK=0; //为下一个上升沿做准备 }
RCLK=1;
_nop_();
_nop_();
RCLK=0;}void main()
{ u8 i; P0=0x7f; //不理解为什么要先点亮第一排？？
while(1) { for(i=0;i<8;i++)
{ P0=ledwei[i]; hc595sendbaty(ledduan[i]); delay(100);
hc595sendbaty(0x00); } } }

复制代码

ID:164602 · 发表于 2018-4-13 09:52

你的程序正确才怪！！！！！
第一：编译有错：RCLK没申明。所以没能编译出可执行文件.HEX，你真的下载起了？那么就不是这个程序，当然不会显示正确了。
第二：主函数都没有，还说“函数正确”

不知道是不是你没有发全部程序。显示0的程序我也有一个，看看吧。

#include<reg51.h>
#include<intrins.h>

sbit SRCLK=P3^6;
sbit RCLK=P3^5;
sbit SER=P3^4;
unsigned char code TAB[8]  = {0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
unsigned char code CHARCODE[20][8]=
{

{0x00,0x00,0x00,0x3E,0x41,0x41,0x41,0x3E}, //0

{0x00,0x00,0x00,0x00,0x21,0x7F,0x01,0x00}, //1

{0x00,0x00,0x00,0x21,0x43,0x45,0x49,0x31}, //2

{0x00,0x00,0x00,0x42,0x41,0x51,0x69,0x46}, //3

{0x00,0x00,0x00,0x0C,0x14,0x24,0x7F,0x04}, //4

{0x00,0x00,0x00,0x72,0x51,0x51,0x51,0x4E}, //5

{0x00,0x00,0x00,0x1E,0x29,0x49,0x49,0x06}, //6

{0x00,0x00,0x00,0x40,0x40,0x4F,0x50,0x60}, //7

{0x00,0x00,0x00,0x36,0x49,0x49,0x49,0x36}, //8

{0x00,0x00,0x00,0x30,0x49,0x49,0x4A,0x3C}, //9

{0x00,0x00,0x01,0x1F,0xE4,0x3C,0x07,0x01}, //A

{0x00,0x00,0x00,0x81,0xFF,0x91,0x91,0x6e}, //B

{0x00,0x00,0x00,0x7E,0x81,0x81,0x81,0xc2}, //C

{0x00,0x00,0x00,0x81,0xFF,0x81,0x81,0x7e}, //D

{0x00,0x00,0x00,0x81,0xFF,0x91,0xb9,0xc3}, //E

{0x00,0x00,0x00,0x81,0xFF,0x91,0xb8,0xc0}, //F

{0x00,0x00,0x3C,0x42,0x81,0x89,0xce,0x08}, //G

{0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00},  //中

{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},  //全灭

{0x3C,0x62,0xB1,0xAB,0x87,0xB1,0x62,0x3C}//人脸

};
void delay(unsigned int time)//0.0001766s延时，约0.2ms
{
  unsigned int j;
  for(time;time>0;time--)
for(j=0;j<20;j++);
}
void Hc595SendByte(unsigned char dat)
{
unsigned char a;
SRCLK=0;
RCLK=0;
for(a=0;a<8;a++)
{
if ((dat<<a)&0x80)
{
SER=1;
}
else
{
SER=0;
}
SRCLK=1;
_nop_();
_nop_();
SRCLK=0;
}

RCLK=1;
_nop_();
_nop_();
RCLK=0;
}

void main ()
{
unsigned char i,j,k;
P0=0xff;
while (1)
{
for (i=0;i<20;i++)
{
for (j=0;j<100;j++)
{
for (k=0;k<8;k++)
{
P0=0xff;
Hc595SendByte(CHARCODE[i][k]);
P0=TAB[k];
delay(5);
}
}
}
}
}

帐号		自动登录	找回密码
密码			立即注册

单片机控制点阵 为什么我这个函数正确,却不能正确显示0啊

单片机控制点阵为什么我这个函数正确,却不能正确显示0啊