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標題: 求大佬看看我這個程序LCD1602為什么什么都沒顯示，謝謝 [打印本頁]

作者: 菜鳥騰飛 時間: 2019-6-23 16:20
標題: 求大佬看看我這個程序LCD1602為什么什么都沒顯示，謝謝
#include<reg51.h>
#include<intrins.h>
#include <string.h>
/*================================
自定義類型名
  ================================*/
typedef unsigned char uchar;
typedef unsigned int uint;

#define sec timer[0]
#define min timer[1]
#define hour timer[2]
#define day timer[3]
#define month timer[4]
#define week timer[5]
#define year timer[6]
uchar time[7] = {0x55, 0x55, 0x15, 0x19, 0x12, 2, 0x17} ;
uchar *week[7][3] =
{
"Sun",
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat"
};
uchar date_str[] = "DATE /  /  ";
uchar time_str[] = "TIME :  :  ";
/*================================
硬件接口位聲明
  ================================*/
sbit TSCLK =P1^0;//時鐘線，接到P10上
sbit TIO =P1^1;    //數據線，接到P11上
sbit TRST =P1^2; //使能端，接到P12上
//定義1602與單片機的接口
sbit RS =P3^5;    //指令數據選擇
sbit RW =P3^6;    //接地，執行寫操作
sbit EN =P3^4;    //信號使能

//延時函數
void Delay100ms(uchar k) //@12.000MHz
{
unsigned char i, j;
while (k--)
{
      i = 195;
      j = 138;
      do
      {
         while (--j)
            ;
      } while (--i);
}
}

//寫DS1302數據
void Write_DS1302(uchar cmd,uchar dat)
{
uchar i;
TRST=0;
TSCLK=1;
TRST=1;
for(i=0;i<8;i++)
{
      TSCLK=0;
TIO=cmd&0x01;
TSCLK=1;
cmd>>=1;
}
for(i=0;i<8;i++)
{
      TSCLK=0;
TIO=dat&0x01;
TSCLK=1;
dat>>=1;
}
}
//讀DS1302數據
uchar Read_DS1302(uchar cmd)
{
uchar dat,i;
TRST=0;
TSCLK=1;
TRST=1;
for(i=0;i<8;i++)
{
      TSCLK=0;
      TIO=cmd&0x01;
TSCLK=1;
cmd>>=1;
}
for(i=0;i<8;i++)
{
      TSCLK=0;
dat >>=1;
if(TIO)dat|=0x80;
TSCLK = 1;
}
return 0;
}
//數據轉BCD碼
uchar Dat_Chg_BCD(uchar dat)
{
   uchar dat1 , dat2;
   dat1 = dat / 10;
   dat2 = dat % 10;
   dat2 = dat2 + dat1 * 16;
   return dat2;
}

//BCD碼轉換為數據
uchar BCD_Chg_Dat(uchar dat)
{
   uchar dat1, dat2;
   dat1 = dat / 16;
   dat2 = dat % 16;
   dat2 = dat2+ dat1 * 10;
   return dat2;
}
/*************讀出LCD狀態*************/
uchar Read_LCD_State()
{
uchar state;
RS=0;RW=1;EN=1;Delay100ms(1);
state=P0;
EN=0;Delay100ms(1);
return state;
}
/***********LCD忙檢測*****************/
void LCD_Busy_Wait()
{
while((Read_LCD_State()&0x80)==0x80);//讀取忙標志位BF,BF=1則一直等待
Delay100ms(1);
}
/**************向LCD寫數據*******************/
void Write_1602_Data(uchar dat)
{
LCD_Busy_Wait();
EN=0;
RS=1;
RW=0;
P0=dat;
EN=1;
Delay100ms(1);
EN=0;;
}
/**************向LCD寫命令*******************/
void Write_1602_Command(uchar cmd)
{
LCD_Busy_Wait();
EN=0;
RS=0;
RW=0;
P0=cmd;
EN=1;
Delay100ms(1);
EN=0;
}
/*****************初始化LCD函數*****************/
void Init_LCD()
{
Write_1602_Command(0X38);//8位數據接口，2行顯示，5*7點陣
Write_1602_Command(0X0c);//開顯示，關光標和閃爍
Write_1602_Command(0X06);//數據讀寫操作畫面不動，寫一個指針加1
Write_1602_Command(0X01);//清屏
Write_1602_Command(0x80);//設置數據指針起點
}
void Display_1602_String(uchar p,uchar*s)
{
   uchar i;
   Write_1602_Command(p|0x80);
   for(i=0;i<16;i++)
   {
      Write_1602_Data(s[i]);
   Delay100ms(1);
   }
}

/*****************格式化日期時間函數*****************/
void Format_DateTime(uchar d,uchar *a)
{
a[0]=d/10+'0';
a[1]=d%10+'0';
}
/*****************主函數*****************/
void main()
{

   Write_DS1302(0x8e,0);
   Write_DS1302(0x80,Dat_Chg_BCD(30));  //30s
   Write_DS1302(0x82,Dat_Chg_BCD(15));  //15min
   Write_DS1302(0x84,Dat_Chg_BCD(19));  //19h
   Write_DS1302(0x86,Dat_Chg_BCD(30));  //30號
   Write_DS1302(0x88,Dat_Chg_BCD(7)); //7月
   Write_DS1302(0x8C,Dat_Chg_BCD(19));  //19年
   Write_DS1302(0x8e,0x80);
   while(1)
   {
      Write_DS1302(0x8e,0);    //清除寫保護
   time[0] = BCD_Chg_Dat(Read_DS1302(0x81));    //讀秒寄存器
   time[1] = BCD_Chg_Dat(Read_DS1302(0x83)); //讀分寄存器
   time[2] = BCD_Chg_Dat(Read_DS1302(0x85));//讀時寄存器
   time[3] = BCD_Chg_Dat(Read_DS1302(0x87)); //讀日寄存器
   time[4] = BCD_Chg_Dat(Read_DS1302(0x89));//讀月寄存器
   time[5] = BCD_Chg_Dat(Read_DS1302(0x8B));//讀星期寄存器
   time[6] = BCD_Chg_Dat(Read_DS1302(0x8D));//讀年寄存器
   Write_DS1302(0x8e,0x80);    //開寫保護

   Init_LCD();
   Format_DateTime(time[6],date_str+5);
   Format_DateTime(time[4],date_str+8);
   Format_DateTime(time[3],date_str+11);
   strcpy(date_str+11,week[time[5]]);
   Format_DateTime(time[2],time_str+5);
   Format_DateTime(time[1],time_str+8);
   Format_DateTime(time[0],time_str+11);
   Display_1602_String(0X00,date_str);
   Display_1602_String(0X40,time_str);
   }
}

作者: 菜鳥騰飛 時間: 2019-6-23 16:24
謝謝各位了

歡迎光臨 (http://m.raoushi.com/bbs/)

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