lpc1114 driver 1602_0802 program

Figure 1. LPC1114 driving LCD1602

Figure 2. LPC1114 driving LCD0802

The program used for LCD1602 and LCD0802 is the same.

In the lcd.h file, the code is as follows:

#ifndef __LCD0802_H__
#define __LCD0802_H__
#include "lpc11xx.h"

#define OUT_DATA(value)     LPC_GPIO2->DATA =(value<<4)
#define RS_LOW  LPC_GPIO3->DATA&=~(1<<0)
#define RS_HIGH  LPC_GPIO3->DATA|=(1<<0)
#define WR_LOW  LPC_GPIO3->DATA&=~(1<<1)
#define WR_HIGH  LPC_GPIO3->DATA|=(1<<1)
#define EN_LOW  LPC_GPIO3->DATA&=~(1<<2)
#define EN_HIGH  LPC_GPIO3->DATA|=(1<<2)

extern void delay_0802(uint16_t us);
extern void write_com(uint16_t com);
extern void write_date(uint16_t dat);
extern void init_0802(void);
extern void lcd_show(void);

#endif

In the lcd.c file, the code is as follows:

#include "lcd.h"
#include "lpc11xx.h"

void delay_0802(uint16_t us)
{
    uint16_t i,j;

    for(i=0;i<100;i++)
        for(j=0;jDIR|=0xFF0; // Set the high 8-bit pins of P2 port to output, used as LCD 8-bit parallel data
    LPC_GPIO2->DATA |= 0XFF0; // Set the high 8-bit pin of port P2 to high
    LPC_GPIO3->DIR|=0x007; // P3 port P3.0 to P3.3 are output pins, used as LCD control pins
    LPC_GPIO3->DATA |= 0x007; // P3 port P3.0 to P3.3 set high
    delay_0802(300);
    write_com(0x38);
    delay_0802(100);
    write_com(0x38);
    delay_0802(100);
    write_com(0x38);
    delay_0802(100);
    write_com(0x0c);
    delay_0802(100);
    write_com(0x06);
    delay_0802(100);
    write_com(0x01);
    delay_0802(100);
}

In the main.c file, the code is as follows:

/**************************************************
 * Name: LPC1114 drives LCD0802 1602
 * Main frequency: 50Mhz (externally connected to 10MHz crystal oscillator, multiplied by 5 times)
 * Author: Ration (CEO of Ruisheng Electronics Network)
 * Date: December 5, 2013 (edited)
 * Copyright: Copyright belongs to , please keep integrity when disseminating
 *
 * For more programs, please visit: http://www.rationmcu.com
 *************************************************/
#include "lpc11xx.h"
#include "lcd.h"

uint8_t table1[8]=" Hello  ";
uint8_t table2[8]=" World  ";

void delay_ms(uint16_t ms)
{
    uint16_t i,j;

    for(i=0;i<5000;i++)
        for(j=0;j