十年專注單片機(jī)方案開發(fā)的方案公司英銳恩，分享CCSC LCD.c程序驅(qū)動(dòng)MCD2demo LCD顯示。英銳恩現(xiàn)提供服務(wù)產(chǎn)品涉及主控芯片：8位單片機(jī)、16位單片機(jī)、32位單片機(jī)及各類運(yùn)算放大器等。

/*=============================================================================
LCD第一行顯示"01234567890:;<=>?"; 第二行顯示"PIC16F877A CCSC "
=============================================================================*/
///////////////////////////////////////////////////////////////////////////////
// MPLAB IDE V7.11 + CCS C3.18
// LCD for MCD2-demo
//
// by LW7807@163.com
// 2005/06/20
///////////////////////////////////////////////////////////////////////////////
#include "16F877A.h"                            // PIC16F877 header file
#use delay(clock=4000000)                       // for 4Mhz crystal
#fuses XT, NOWDT, NOPROTECT, NOLVP              // for debug mode

#define PORT_A                  0               // define for function output()
#define PORT_B                  1
#define PORT_C                  2
#define PORT_D                  3
#define PORT_E                  4

#define NCHAR_PER_LINE          16              // max char numbers per line

#define LCD_RS                  PIN_A1
#define LCD_RW                  PIN_A2
#define LCD_E                   PIN_A3
#define LCD_DAT                 PORT_C

/////////////////////////////////////////////////////////// output()
//lcd data bus output
void output(int8 port, int8 dat)
{
        switch(port)
                {
                case PORT_A: output_a(dat);      break;
                case PORT_B: output_b(dat);      break;
                case PORT_C: output_c(dat);      break;
                case PORT_D: output_d(dat);      break;
                case PORT_E: output_e(dat);      break;
                default :       //??? port maybe error!
                        break;

      }
}//end output()

/////////////////////////////////////////////////////////// lcd_write_cmd()
//
void lcd_write_cmd(int8 cmd)
{
        delay_us(400);
        output_low(LCD_RS);
        output_low(LCD_RW);
        output(LCD_DAT, cmd);

        output_high(LCD_E);
        delay_us(400);
        output_low(LCD_E);
}//end lcd_write_cmd()

/////////////////////////////////////////////////////////// lcd_write_dat()
//
void lcd_write_dat(int8 dat)
{
        delay_us(400);
        output_high(LCD_RS);
        output_low(LCD_RW);
        output(LCD_DAT, dat);

        output_high(LCD_E);
        delay_us(400);
        output_low(LCD_E);

}//end lcd_write_dat()

/////////////////////////////////////////////////////////// lcd_init()
//
void lcd_init(void)
{
        output_low(LCD_E);              // Let LCD E line low

        lcd_write_cmd(0x38)；           // LCD 16x2, 5x7, 8bits data
        delay_ms(15);
        lcd_write_cmd(0x01);            // Clear LCD display
        delay_ms(10);
        lcd_write_cmd(0x0f);            // Open display & current
        delay_ms(10);
        lcd_write_cmd(0x06);            // Window fixed

  delay_ms(10);
}//end lcd_init()

/////////////////////////////////////////////////////////// lcd_display_char()
//
void lcd_display_char(int8 line, int8 pos, int8 ch)
{
        int8 tmp;

        line = (line==0) ? 0 : 1;
        pos  = (pos >NCHAR_PER_LINE) ? NCHAR_PER_LINE : pos;

        tmp = 0x80 + 0x40*line + pos;
        lcd_write_cmd(tmp);
        lcd_write_dat(ch);
}//end lcd_display_char()

/////////////////////////////////////////////////////////// lcd_display_str()
//
void lcd_display_str(int8 line, char str[])
{
        int8 i;

        for(i=0; i<nchar_per_line;>         {
                lcd_display_char(line, i, ' ');
                }
        for(i=0; i<nchar_per_line;>                {
                if(str == '\0') break;
                lcd_display_char(line, i, str);
                }
}//end lcd_display_str() 

/*===========================================================================*/
void main(void)
{
        char LINE2[] = { "PIC16F877A CCSC LCD.C" };
        int8 i;

        lcd_init();

        for(i=0; i<nchar_per_line;>                {
                lcd_display_char(0, i, '0'+i);
                }

      //lcd_display_str(1, "PIC16F877A CCSC LCD.C")   //CCSC can't compiler
        lcd_display_str(1, LINE2);
}//end main()

附上程序lst文件

CCS PCM C Compiler, Version 3.187, 16465

               Filename: ccsc_LCD.LST

               ROM used: 323 (4%)
                         Largest free fragment is 2048
               RAM used: 30 (17%) at main() level
                         40 (23%) worst case
               Stack:    4 locations

*
0000:  MOVLW  00
0001:  MOVWF  0A
0002:  GOTO   0F8
0003:  NOP
....................  /*=============================================================================

.................... LCD第一行顯示"01234567890:;<=>??; 第二行顯示"PIC16F877A CCSC "
.................... =============================================================================*/
.................... ///////////////////////////////////////////////////////////////////////////////
.................... // MPLAB IDE V7.11 + CCS C3.18
.................... // LCD for MCD2-demo
.................... //
.................... // by LW7807@163.com
.................... // 2005/06/20
.................... ///////////////////////////////////////////////////////////////////////////////
.................... #include "16F877A.h"                            // PIC16F877 

header file
....................  //////// Standard Header file for the PIC16F877A device ////////////////
.................... #device PIC16F877A
.................... #list
....................
.................... #use delay(clock=4000000)                       // for 4Mhz crystal
*
005E:  MOVLW  38
005F:  MOVWF  04
0060:  MOVF   00,W
0061:  BTFSC  03.2
0062:  GOTO   072
0063:  MOVLW  01
0064:  MOVWF  78
0065:  CLRF   77
0066:  DECFSZ 77,F
0067:  GOTO   066
0068:  DECFSZ 78,F
0069:  GOTO   065
006A:  MOVLW  4A
006B:  MOVWF  77
006C:  DECFSZ 77,F
006D:  GOTO   06C
006E:  NOP
006F:  NOP
0070:  DECFSZ 00,F
0071:  GOTO   063
0072:  RETLW  00
.................... #fuses XT, NOWDT, NOPROTECT, NOLVP              // for debug mode

....................
.................... #define PORT_A                  0               // define for function output()
.................... #define PORT_B                  1
.................... #define PORT_C                  2
.................... #define PORT_D                  3
.................... #define PORT_E                  4
....................
....................
.................... #define NCHAR_PER_LINE          16              // max char numbers per line
....................

.................... #define LCD_RS                  PIN_A1
.................... #define LCD_RW                  PIN_A2
.................... #define LCD_E                   PIN_A3
.................... #define LCD_DAT                 PORT_C
....................
.................... /////////////////////////////////////////////////////////// output()
.................... //lcd data bus output
.................... void output(int8 port, int8 dat)
.................... {
....................         switch(port)
....................                 {
*
0004:  MOVF   41,W
0005:  MOVWF  77
0006:  MOVF   77,F
0007:  BTFSC  03.2
0008:  GOTO   01A
0009:  MOVLW  01
000A:  SUBWF  77,W
000B:  BTFSC  03.2
000C:  GOTO   021
000D:  MOVLW  02
000E:  SUBWF  77,W
000F:  BTFSC  03.2
0010:  GOTO   028
0011:  MOVLW  03
0012:  SUBWF  77,W

0013:  BTFSC  03.2
0014:  GOTO   030
0015:  MOVLW  04
0016:  SUBWF  77,W
0017:  BTFSC  03.2
0018:  GOTO   037
0019:  GOTO   03E
....................                 case PORT_A: output_a(dat);      break;
001A:  MOVLW  00
001B:  BSF    03.5
001C:  MOVWF  05
001D:  BCF    03.5
001E:  MOVF   42,W
001F:  MOVWF  05
0020:  GOTO   03F
....................                 case PORT_B: output_b(dat);      break;
0021:  MOVLW  00

0022:  BSF    03.5
0023:  MOVWF  06
0024:  BCF    03.5
0025:  MOVF   42,W
0026:  MOVWF  06
0027:  GOTO   03F
....................                 case PORT_C: output_c(dat);      break;
0028:  MOVLW  00
0029:  MOVWF  20
002A:  BSF    03.5
002B:  MOVWF  07
002C:  BCF    03.5
002D:  MOVF   42,W
002E:  MOVWF  07
002F:  GOTO   03F
*
0101:  MOVLW  FF
0102:  MOVWF  20
....................                 case PORT_D: output_d(dat);      break;
*
0030:  MOVLW  00
0031:  BSF    03.5
0032:  MOVWF  08
0033:  BCF    03.5
0034:  MOVF   42,W
0035:  MOVWF  08
0036:  GOTO   03F
....................                 case PORT_E: output_e(dat);      break;

0037:  MOVLW  00
0038:  BSF    03.5
0039:  MOVWF  09
003A:  BCF    03.5
003B:  MOVF   42,W
003C:  MOVWF  09
003D:  GOTO   03F
....................                 default :       //????port maybe error!
....................                         break;
003E:  GOTO   03F
....................                 }
.................... }//end output()
003F:  RETLW  00
....................
.................... /////////////////////////////////////////////////////////// lcd_write_cmd()

.................... //
.................... void lcd_write_cmd(int8 cmd)
.................... {
....................         delay_us(400);
0040:  MOVLW  85
0041:  MOVWF  77
0042:  DECFSZ 77,F
0043:  GOTO   042
....................         output_low(LCD_RS);
0044:  BSF    03.5
0045:  BCF    05.1
0046:  BCF    03.5
0047:  BCF    05.1
....................         output_low(LCD_RW);
0048:  BSF    03.5
0049:  BCF    05.2
004A:  BCF    03.5
004B:  BCF    05.2
....................         output(LCD_DAT, cmd);
004C:  MOVLW  02
004D:  MOVWF  41
004E:  MOVF   40,W
004F:  MOVWF  42
0050:  CALL   004
....................
....................         output_high(LCD_E);
0051:  BSF    03.5
0052:  BCF    05.3
0053:  BCF    03.5

Configuration Fuses:
   Word  1: 3F79   XT NOWDT NOPUT NODEBUG NOPROTECT BROWNOUT NOLVP NOCPD NOWRT

/*===========================================================================*/
void main(void)
{
        char LINE2[] = { "PIC16F877A CCSC LCD.C" };
        int8 i;

        lcd_init();

        for(i=0; i<nchar_per_line;>                {

  lcd_display_char(0, i, '0'+i);
                }
        //lcd_display_str(1, "PIC16F877A CCSC LCD.C")   //CCSC can't compiler
        lcd_display_str(1, LINE2);
}//end main()