lcd.lst

首先pic和铁电24c02通讯

     1: #include "pic18fxx2.h"
     2: #include "lcd.h"
     3: char  int2charLCD[]="0123456789";
     4: 
     5: //void lcd_wait(void); 
     6: #define RS       RC5
     7: #define RS_DIR   TRISC5
     8: #define RW   RC6
     9: #define RW_DIR   TRISC6
    10: #define EN   RC7
    11: #define EN_DIR   TRISC7
    12: #define INPUT    0X01
    13: #define OUTPUT   0X00
    14: #define RS_HIGH()  RS=1;RS_DIR=OUTPUT
    15: #define RS_LOW()   RS=0;RS_DIR=OUTPUT
    16: #define RW_HIGH()  RW=1;RW_DIR=OUTPUT
    17: #define RW_LOW()   RW=0;RW_DIR=OUTPUT
    18: #define EN_HIGH()  EN=1;EN_DIR=OUTPUT
    19: #define EN_LOW()   EN=0;EN_DIR=OUTPUT
    20: #define Key_CLK   RB0
    21: #define CLK_DIR   TRISB0
    22: #define Key_Data  RB5
    23: #define Data_DIR  TRISB5
    24: //#define uchar      unsigned char
    25: #define TRUE       1
    26: #define FALSE      0
    27: 
    28: //static uchar reciv_data=0X00;
    29: //static uchar keynumber[17]={0X89,0X9F,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
    30: //static uchar  dis[32]={0X30,0X30,0X30,0X32,0X33,0X34,0X35,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00};
    31: //const uchar  table1[ ] = {"DATA  07-090-7"};
    32: //const uchar  table2[ ] = {"TIME  17:53:34"};
    33: //uchar PARITY;
    34: //static uchar error=0x00;
    35: //bit result;
    36: void delay1(uchar ms)
    37: {uchar w;
    38:     while(ms--)
    39:         {
    40:       
    41:           for(w=250;w!=0;w--)  
    42:            ;
    43:        ;
    44:        ;
    45:        ;
    46:         }
    47: }
    48: void delay_us(uchar us)
    49: { 
    50:   while(us--);
    51: }               
    52: uchar lcd_busy()
    53:  {                          
    54:     uchar result;
    55:     TRISD=0XFF;
    56:     PORTD=0XFF;
    57:     RS_LOW ();
    58:     RW_HIGH(); 
    59:     EN_HIGH();
    60:     result=(PORTD&0x80);
    61:     EN_LOW();
    62:     TRISD=0X00;
    63:     return result;   
    64:     
    65:  }
    66: 
    67: void lcd_wcmd(uchar cmd)
    68: 
    69: {                          
    70:     while(lcd_busy()); 
    71:     RS_LOW(); 
    72:     RW_LOW(); 
    73:     EN_LOW();
    74:     ;
    75:     ; 
    76:     ;
    77:     ;
    78:     PORTD =cmd ;
    79:     
    80:     ;
    81:     ;
    82:     ;
    83:     ;
    84:     EN_HIGH(); 
    85:     ;
    86:     ;
    87:     ;
    88:     ;
    89:     EN_LOW();
    90:       
    91: }
    92: void lcd_wdat(uchar dat)
    93: {                          
    94:    while(lcd_busy());
    95:    TRISD=0X00;
    96:     RS_HIGH();
    97:     RW_LOW(); 
    98:     EN_LOW(); 
    99:     
   100:     PORTD = dat;
   101:     ;
   102:     ;
   103:     ;
   104:     ;
   105:     EN_HIGH(); 
   106:     ;
   107:     ;
   108:     ;
   109:     ;
   110:     EN_LOW(); 
   111: }
   112: void lcd_init()
   113: {   delay1(15);                     
   114:     lcd_wcmd(0x38);      //16*2显示，5*7点阵，8位数据
   115:     delay1(5);
   116:     lcd_wcmd(0x38);         
   117:     delay1(5);
   118:     lcd_wcmd(0x38);         
   119:     delay1(5);
   120:     lcd_wcmd(0x0c);      //显示开，关光标
   121:     delay1(5);
   122:     lcd_wcmd(0x06);      //移动光标
   123:     delay1(5);
   124:     lcd_wcmd(0x01);      //清除LCD的显示内容
   125:     delay1(5);
   126:     
   127:     
   128: }
   129: void lcd_pos(uchar pos)
   130: {                          
   131:   lcd_wcmd(pos | 0x80);    //数据指针=80+地址变量
   132: }