/*************PIC16F917单片机程序******************************/
/*****File  Function :  LCD NOKIA5110测试程序         *****/
/*****Program Author :  ZhengWen(ClimberWin)       *****/
/*****MCU            ： PIC16F917  内部晶振              *****/
/*****Compile Date   :  2010/08/18                          *****/
/*****Edition Info   :  V1.0                                       *****/
/*****************************************************************/
//
//引脚定义：PORTD=8LED，KEY=RB0(INT) RA5(AN4)作为AD输入
/*修改日期:                                                 */

/************************************/
#include
#include "english_6x8_pixel.h"
#define uchar unsigned char
#define uint unsigned int
void Init(void);     //初始化子程序
void LCD_init(void); //LCD初始化程序
void LCD_clear(void);
void LCD_write_english_string(unsigned char X,unsigned char Y,const char *s);
void LCD_write_byte(unsigned char data, unsigned char command);
void delayms(unsigned int count);

#define KEY       RB0
#define SPI_CLK                RD0  
#define SPI_MOSI               RD1 
#define LCD_DC                 RD2 
#define LCD_CE                 RD3
#define LCD_RST                RD4 
/***********************************************/

const unsigned char mask_table[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};

/*********************************************/  
void delayms(unsigned int count)
{
 uint i,j;
 for(i=0;i  for(j=0;j<120;j++);
}
/*********************************************/  
void Init(void)
 {
     PORTA = 0B00000000;
     PORTB = 0B00000000;
     PORTD = 0B00000000;    

     TRISA = 0B00100010;//设置RA5(AN4) RA1作为输入
     TRISB = 0B00100001;//设置RB0为输入，作为按键口
     TRISD = 0B00000000;//设置PORTD口为输出，作为LCD/LED显示口
     RD5=1;//关闭LED
     RD6=1;
     RD7=1; 
     LCD_init(); //初始化液晶

}

void LCD_init(void)
  {
    LCD_RST=0;      //LCD复位
    NOP();
    LCD_RST=1;
    
    LCD_CE=0 ;  // 关闭LCD
    NOP();
    LCD_CE=1;  // 使能LCD
    NOP();

    LCD_write_byte(0x21, 0); // 使用扩展命令设置LCD模式
    LCD_write_byte(0xc8, 0); // 设置偏置电压
    LCD_write_byte(0x06, 0); // 温度校正
    LCD_write_byte(0x13, 0); // 1:48
    LCD_write_byte(0x20, 0); // 使用基本命令
    LCD_clear();             // 清屏
    LCD_write_byte(0x0c, 0); // 设定显示模式，正常显示
        
    LCD_CE=0 ;          // 关闭LCD
  }

/////////LCD清屏程序/////////////
void LCD_clear(void)
{
    uint i;
    LCD_write_byte(0x0c, 0);   
    LCD_write_byte(0x80, 0);   
    for (i=0; i<504; i++)
    LCD_write_byte(0x00, 1);//清零  
}

///////////设置LCD坐标///////////////////
void LCD_set_XY(unsigned char X, unsigned char Y)
{
    LCD_write_byte(0x40 | Y, 0);   
    LCD_write_byte(0x80 | X, 0);      
}

////////////////字符显示程序/////////////////////
void LCD_write_char(unsigned char c)
{
    uint line;
    c=c-32;
    for (line=0; line<6; line++)
    LCD_write_byte( font6x8[c][line], 1);
}

/////////////////打印字符串/////////////////////////
void LCD_write_english_string(unsigned char X,unsigned char Y, const unsigned char *s)
  {
    uchar i = 0;
    LCD_set_XY(X,Y);
    while(*s) {LCD_write_char(*s++);} 
  }

////////////写数据到LCD//////////////////////
void LCD_write_byte(unsigned char data, unsigned char command)
{
uchar i;
    LCD_CE=0 ;          // 使能LCD
    
    if (command == 0)
      {LCD_DC=0 ;}         // 传送命令
    else
      {LCD_DC=1 ;}       // 传送数据
 
for(i=0;i<8;i++)
{
if(data&mask_table[i])
{SPI_MOSI=1;}
else
{SPI_MOSI=0;}
SPI_CLK=0;
NOP();
SPI_CLK=1;
}

    LCD_CE=1 ;   // 关闭LCD
}

////////////主程序/////////////////////////
void main (void)
{
 Init();//初始化程序 
 LCD_clear();   //LCD清屏
 delayms(1000);
 LCD_write_english_string(0,0,"Nokia5110 LCD" ); 
 LCD_write_english_string(0,1,"MCU:PIC16F917" ); 
 LCD_write_english_string(0,2,"Version: V1.0" ); 
 LCD_write_english_string(0,3,"Test OK!     " ); 
 LCD_write_english_string(0,4,"By ClimberWin" ); 
 LCD_write_english_string(0,5,"2010.08.18   " );

  while(1);

}