C51单片机温湿传感器DHT11显示屏LCD1602显示

ID:350078 · 发表于 2018-6-21 14:42

#include"lcd.h"

void Read_Busy()          //忙检测函数，判断bit7是0，允许执行；1禁止
{
unsigned char sta;    //
LCD1602_DB = 0xff;
LCD1602_RS = 0;
LCD1602_RW = 1;
do
{
      LCD1602_EN = 1;
      sta = LCD1602_DB;
      LCD1602_EN = 0; //使能，用完就拉低，释放总线
}while(sta & 0x80);
}

void Lcd1602_Write_Cmd(unsigned char cmd)    //写命令
{
Read_Busy();
LCD1602_RS = 0;
LCD1602_RW = 0;
LCD1602_DB = cmd;
LCD1602_EN = 1;
LCD1602_EN = 0;
}

void Lcd1602_Write_Data(unsigned char dat) //写数据
{
   Read_Busy();
   LCD1602_RS = 1;
   LCD1602_RW = 0;
   LCD1602_DB = dat;
   LCD1602_EN = 1;
   LCD1602_EN = 0;
}

void LcdSetCursor(unsigned char x,unsigned char y)  //坐标显示
{
unsigned char addr;
if(y == 0)
      addr = 0x00 + x;
else
      addr = 0x40 + x;

Lcd1602_Write_Cmd(addr|0x80);
}
//*************************显示字符
void DisplayOneChar (uchar X,uchar Y,uchar DData)
{
if(Y) X|=0X40; //Y=1显示第二行，Y=0显示第一行
X|=0X80;
Lcd1602_Write_Cmd(X); //X用来选择哪一位
Lcd1602_Write_Data(DData); //DData用来写数据
}

void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str)    //显示字符串
{
LcdSetCursor(x,y);    //当前字符的坐标
while(*str != '\0')
{
      Lcd1602_Write_Data(*str++);
}
}

void InitLcd1602()             //1602初始化
{
Lcd1602_Write_Cmd(0x38); //打开，5*8,8位数据
Lcd1602_Write_Cmd(0x0c);
Lcd1602_Write_Cmd(0x06);
Lcd1602_Write_Cmd(0x01); //清屏
}

详见：http://www.51hei.com/bbs/dpj-87250-1.html

帐号		自动登录	找回密码
密码			立即注册