SmartBike/lcd.c

#include  "lcd.h"


void Read_Busy()           //æ<EFBFBD><EFBFBD><EFBFBD>⺯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>bit7<EFBFBD><EFBFBD>0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD>У<EFBFBD>1<EFBFBD><EFBFBD>ֹ
{
    unsigned char sta;      //
    LCD1602_DB = 0xff;
    LCD1602_RS = 0;
    LCD1602_RW = 1;
    do
    {
        LCD1602_EN = 1;
        sta = LCD1602_DB;
        LCD1602_EN = 0;    //ʹ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    }while(sta & 0x80);
}

void Lcd1602_Write_Cmd(unsigned char cmd)     //д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
    Read_Busy();
    LCD1602_RS = 0;
    LCD1602_RW = 0;
    LCD1602_DB = cmd;
    LCD1602_EN = 1;
    LCD1602_EN = 0;    
}

void Lcd1602_Write_Data(unsigned char dat)   //д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
      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)  //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
{
    unsigned char addr;
    if(y == 0)
        addr = 0x00 + x;
    else
        addr = 0x40 + x;
    
    Lcd1602_Write_Cmd(addr|0x80);
}

//<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾһ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{
	Y &= 0x1;
	X &= 0xF; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>X<EFBFBD><EFBFBD><EFBFBD>ܴ<EFBFBD><EFBFBD><EFBFBD>15<EFBFBD><EFBFBD>Y<EFBFBD><EFBFBD><EFBFBD>ܴ<EFBFBD><EFBFBD><EFBFBD>1
	if (Y) X |= 0x40; //<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ʾ<EFBFBD>ڶ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>+0x40;
	X |= 0x80; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	Lcd1602_Write_Cmd(X); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	Lcd1602_Write_Data(DData); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}


void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str)     //<EFBFBD><EFBFBD>ʾ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>
{
    LcdSetCursor(x,y);      //<EFBFBD><EFBFBD>ǰ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    while(*str != '\0')
    {
        Lcd1602_Write_Data(*str++);
    }
}

void InitLcd1602()              //1602<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
{
    Lcd1602_Write_Cmd(0x38);    //<EFBFBD>򿪣<EFBFBD>5*8,8λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    Lcd1602_Write_Cmd(0x0c);
    Lcd1602_Write_Cmd(0x06);
    Lcd1602_Write_Cmd(0x01);    //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>   
}