zz10_lcd1.c

《dsPIC通用数字信号控制器原理及应用》源码

#include	"p30f6014.h"
int failmemory[40];

#define  LCD_SW  PORTDbits.RD6  //LED背光，低有效
#define  LCD_DI  PORTDbits.RD3  //指令/数据，低为数据
#define  LCD_RW  PORTDbits.RD4  //读/写，低为写
#define  LCD_E   PORTDbits.RD5  //使能信号，下降沿写入

const char table1[300]={       
0x08,0x08,0x0A,0xEA,0xAA,0xAA,0xAA,0xFF,0xA9,0xA9,0xA9,0xE9,0x08,0x08,0x08,0x00,
0x40,0x40,0x48,0x4B,0x4A,0x4A,0x4A,0x7F,0x4A,0x4A,0x4A,0x4B,0x48,0x40,0x40,0x00,  
// 重                     
0x00,0x00,0xFC,0x44,0x44,0x44,0x44,0xC5,0x7E,0xC4,0x44,0x44,0x44,0x44,0x44,0x00,
0x40,0x30,0x0F,0x40,0x20,0x10,0x0C,0x03,0x00,0x01,0x06,0x18,0x30,0x60,0x20,0x00, 
// 庆                         
0x20,0x20,0x20,0x20,0x20,0x20,0xA0,0x7F,0xA0,0x20,0x20,0x20,0x20,0x20,0x20,0x00,
0x00,0x80,0x40,0x20,0x10,0x0C,0x03,0x00,0x01,0x06,0x08,0x30,0x60,0xC0,0x40,0x00, 
// 大                              
0x40,0x30,0x10,0x12,0x5C,0x54,0x50,0x51,0x5E,0xD4,0x50,0x18,0x57,0x32,0x10,0x00,
0x00,0x02,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02,0x02,0x02,0x02,0x02,0x00, 
// 学                      
};     


void ReadLcdState (int E) //读状态字，判断忙否，E为区分左右
{
	unsigned long int i = 0;
	int	STAFLAG; 
	TRISD = 0xff00;    //D0~D7输入
	if(E==1)
		PORTD = (PORTD&0xfff8)|0x0004; //CSA=0,CSB=1左
	else	
		PORTD = (PORTD&0xfff8)|0x0005; //CSA=1,CSB=0右
	LCD_RW = 1;
	LCD_DI = 0;	
	while(1)
	{		
		LCD_E = 1;
		for(i=0; i<2; i++){}
		LCD_E = 0;
		STAFLAG = PORTD&0x8000; // 读液晶状态
		if(STAFLAG==0x0000)break;
	}
}



void WriteLcdIns (int INS,int E) //写指令，E为区分左右
{
	unsigned long int i = 0;
	ReadLcdState (E);
	TRISD = 0x0000; //D0~D7输出
	if(E==1)
		PORTD = (PORTD&0xfff8)|0x0004; //CSA=0,CSB=1左
	else	
		PORTD = (PORTD&0xfff8)|0x0005; //CSA=1,CSB=0右
	LCD_RW = 0;
	LCD_DI = 0;
    LCD_E = 1;
    PORTD = (PORTD&0x00ff)|((INS<<8)&0xff00); // 指令写入LCD
	for(i=0; i<2; i++){}	
	LCD_E = 0;
}


void WriteLcdData (int DATA,int Yaddress,int E) //写数据，E为区分左右
{
	unsigned long int i = 0;
	WriteLcdIns(Yaddress,E);		//设置列地址
	ReadLcdState (E);				//查询液晶是否为空闲
	TRISD = 0x0000; //D0~D7输出
    if(E==1)
		PORTD = (PORTD&0xfff8)|0x0004; //CSA=0,CSB=1左
	else	
		PORTD = (PORTD&0xfff8)|0x0005; //CSA=1,CSB=0右	
	LCD_RW = 0;
	LCD_DI = 1;
	LCD_E = 1;
	PORTD=(PORTD&0x00ff)|((DATA<<8)&0xff00);// 数据写入LCD
	for(i=0; i<2; i++){}
	LCD_E = 0;	
}


void OffLcdDis (int E) //关显示
{
	unsigned long int i = 0;
	int STAFLAG;
	while(1)
	{
	    WriteLcdIns (0X3E,E);	   //写指令：关闭显示
      	ReadLcdState (E);		   //查询液晶是否为空闲
		TRISD = 0xff00;//D0~D7输入
      	if(E==1)
			PORTD = (PORTD&0xfff8)|0x0004; //CSA=0,CSB=1左
		else	
			PORTD = (PORTD&0xfff8)|0x0005; //CSA=1,CSB=0右
		LCD_RW = 1;
		LCD_DI = 0;
 		
    	LCD_E = 1;
		for(i=0; i<2; i++){}
		LCD_E = 0;
		STAFLAG = PORTD&0X2000;    // 读液晶状态	
		if(STAFLAG==0X2000)break;  //如液晶关闭,则退出循环
	}
}


void OpenLcdDis (int E) //开显示
{
	unsigned long int i = 0;
	int	STAFLAG;
	while(1)
	{
		WriteLcdIns (0x3F,E);	   //写指令：LCD显示RAM中的内容
      	ReadLcdState (E);		   //查询液晶是否为空闲 
		TRISD = 0xff00;//D0~D7输入
    	if(E==1)
			PORTD = (PORTD&0xfff8)|0x0004; //CSA=0,CSB=1左
		else	
			PORTD = (PORTD&0xfff8)|0x0005; //CSA=1,CSB=0右	
		LCD_RW = 1;
		LCD_DI = 0;
		LCD_E = 1;
		for(i=0; i<2; i++){}
		LCD_E = 0;
		STAFLAG = PORTD&0x2000;// 读液晶状态	
		if(STAFLAG==0x0000)break;  //如果液晶被打开,则退出循环
	}
}


void ClrLcdDis (int E) //清屏
{
	int PAGENUM;          //页地址B8~BF
	int Yaddress;         // Y地址40~7F
	for (PAGENUM=0xB8; PAGENUM<=0xBF; PAGENUM++)
    	{
         	WriteLcdIns (PAGENUM, E); 		 //设置相应的页地址
        	for (Yaddress=0x40; Yaddress<=0x7F; Yaddress++)
         		{
           			WriteLcdData(0x00, Yaddress, E);  //送0清屏
          		}
        }
}


void LCDinit (int E) // LCD初始化子程序
{
	OffLcdDis (E);			 //关显示
	WriteLcdIns (0x0A4,E);   //设置显示驱动，占空比，复位，ADC选择等
   	WriteLcdIns (0x0A9,E);   
  	WriteLcdIns (0x0E2,E);   
 	WriteLcdIns (0x0A0,E);   
    ClrLcdDis (E);			 //清屏
    OpenLcdDis (E);			 //开显示
}



void DISPLAY(int n,int E,int PAGADD,int Yaddress) // 送显汉字子程序
{ 
	int K;
    char TEMP;
	WriteLcdIns (0X0c0,E);
   	WriteLcdIns (PAGADD,E);
    n=n*32;
    for(K=0;K<16;K++,Yaddress++) 
	    	{
	        	TEMP=table1[K+n];
	        	WriteLcdData (TEMP,Yaddress,E);
	        }
		Yaddress=Yaddress-16;
	    PAGADD=PAGADD+1;
	    WriteLcdIns (PAGADD,E);
	    for(;K<32;K++,Yaddress++)
	      	{
	       		TEMP=table1[K+n];
	       		WriteLcdData (TEMP,Yaddress,E);
	      	}
		WriteLcdIns (0X0C0,E);
		PAGADD=PAGADD-1;
    	WriteLcdIns (PAGADD,E);
}

main() 
{
    INTCON1=0x0000;	
	INTCON2=0x0000;	//关闭所有中断 
	LCDinit(1);     // LCD初始化子程序
	LCDinit(2);
	LCD_SW = 0;     // 开背光
	DISPLAY (0,1,0xBA,0x47);//重
    DISPLAY (1,1,0xBA,0x67);//庆
    DISPLAY (2,2,0xBA,0x47);//大
    DISPLAY (3,2,0xBA,0x67);//学
    for( ; ; ){}
}