STC12C5A60S2_LCD1602驱动

LCD1602.H

  代码如下：

#ifndef __LCD1602_H_
#define __LCD1602_H_
#include <reg52.h>

typedef unsigned char uint8;

sbit RS   = P1 ^ 0;
sbit RW   = P1 ^ 1;
sbit EN   = P2 ^ 5;
sbit STA7 = P0 ^ 7;

void Init_LCD1602 ( void );
void w_string ( uint8 addr_start, uint8 *p );
#endif

LCD1602.c

  代码如下：

#include "LCD1602.h"

static void delay1ms ( uint8 i ) {
    while ( i-- ) {
        unsigned char a, b, c;

        for ( c = 1; c > 0; c-- )
            for ( b = 4; b > 0; b-- )
                for ( a = 109; a > 0; a-- );
    }
}

static void wait ( void ) { /* 读写检查，确保STA7为0 */
    P0 = 0xFF;

    do {
        RS = 0;
        RW = 1;
        EN = 1;
    } while ( STA7 == 1 );
}

static void w_dat ( uint8 dat ) { /* 写数据 */
    wait();
    RS = 1;
    RW = 0;
    P0 = dat;
    EN = 0;
    EN = 1;
    EN = 0;
}

static void w_cmd ( uint8 cmd ) { /* 写命令 */
    wait();
    P0 = cmd;
    RS = 0;
    RW = 0;
    EN = 0;
    EN = 1;
    EN = 0;
}

void w_string ( uint8 addr_start, uint8 *p ) { /* 发送字符串到LCD */
    w_cmd ( addr_start );

    while ( *p != '\0' ) {
        w_dat ( *p++ );
    }
}

void Init_LCD1602 ( void ) {
    delay1ms ( 15 );
    w_cmd ( 0x38 ); /* “16*2”显示，“5*7”点阵，8位数据接口 */
    delay1ms ( 5 );
    w_cmd ( 0x38 );
    delay1ms ( 5 );
    w_cmd ( 0x38 );
    w_cmd ( 0x38 );
    w_cmd ( 0x08 );
    w_cmd ( 0x01 ); /* 显示清屏 */
    w_cmd ( 0x06 ); /* 文字不动，光标自动右移 */
    w_cmd ( 0x0C ); /* 开显示、不显示光标、光标不闪烁 */
}

main.c

  代码如下：

#include <reg52.h>
#include "LCD1602.h"
#include <intrins.h>

unsigned char code word1[] = {"Hello,111"};
unsigned char code word2[] = {"World,111"};

int main ( void ) {
    Init_LCD1602();
    w_string ( 0x80, word1 );
    w_string ( 0xC0, word2 );

    while ( 1 );
}