这几天一直在用周工的EASYARM2131调这块液晶，代码是原来在51用过的，移植上来的，感觉上没什么问题，用示波器测试电平也很好，液晶没有问题，在51上调出来正常，是ARM上的驱动电流不够，还是程序有问题，搞了好几天都没有结果，请高人指点，以下为我的代码。
#include "config.h"
#ifndef __LCD12864_H
#define __LCD12864_H
#define LCD_DI 1 << 8
#define LCD_RW 1 << 9
#define LCD_E 1 << 10
#define LCD_CSA 1 << 11
#define LCD_CSB 1 << 12
#define LCD_RST 1 << 13
#define LCD_BUSY 0x00000080
#define LCD_DAT 0xff
#define LCD_ALL_DIR() IO0DIR = IO0DIR | (LCD_DI |
LCD_RW |
LCD_E |
LCD_CSA |
LCD_CSB |
LCD_RST)
#define LCD_ALL_CLR() IO0CLR = 0x00003fff
#define DI_H() IO0SET = LCD_DI
#define DI_L() IO0CLR = LCD_DI
#define RW_H() IO0SET = LCD_RW
#define RW_L() IO0CLR = LCD_RW
#define E_H() IO0SET = LCD_E
#define E_L() IO0CLR = LCD_E
#define CSA_H() IO0SET = LCD_CSA
#define CSA_L() IO0CLR = LCD_CSA
#define CSB_H() IO0SET = LCD_CSB
#define CSB_L() IO0CLR = LCD_CSB
#define RST_H() IO0SET = LCD_RST
#define RST_L() IO0CLR = LCD_RST
extern void LCD_Init(void);
extern void LCD_CLR(uint8 dat);
extern void LCD_Delay(uint32 dly);
extern void SendData(uint8 data);
extern void Write_Cmd_L(uint8 cmd);
extern void Write_Cmd_R(uint8 cmd);
extern void Write_Dat_L(uint8 dat);
extern void Write_Dat_R(uint8 dat);
extern void write_data(uint8 xpos,uint8 ypos,uint8 lcddata);
extern void lcd_putchar8x8( uint8 x,uint8 y,uint8 ch );
#endif
#include "config.h"
#include "zifu8_8.h"
/*********LCD初始化*****************/
void LCD_Init(void)
{
uint32 i;
PINSEL0=0x00000000;
LCD_ALL_DIR();
LCD_ALL_CLR();
RST_L();
for(i=0; i<10000; i++);
RST_H();
for(i=0; i<10000; i++);
CSA_H();
CSB_H();
LCD_Delay(30);
Write_Cmd_L(0x3e); //关显示
Write_Cmd_R(0x3e);
Write_Cmd_L(0xc0); //起始行
Write_Cmd_R(0xc0);
Write_Cmd_L(0x3f); //开显示
Write_Cmd_R(0x3f);
LCD_CLR(0x00);
LCD_Delay(2000);
}
/***********************************/
/***********************************/
void LCD_CLR(uint8 dat)
{
uint8 i,j,page;
for( i = 0; i < 8; i++ )
{
page = i;
page |= 0xb8;
Write_Cmd_L( page );
LCD_Delay(10);
Write_Cmd_L( 0x40 );
for( j = 0; j < 64; j++ ){
Write_Dat_L(dat);
LCD_Delay(10);}
Write_Cmd_R( page );
LCD_Delay(10);
Write_Cmd_R( 0x40 );
for( j = 0; j < 64; j++ ){
Write_Dat_R(dat);
LCD_Delay(10);}
}
}
/***********************************/
/***********延时********************/
void LCD_Delay(uint32 dly)
{
uint16 i;
for(i=0;i<dly;i++);
}
/***********************************/
/**********命令数据写出**************/
void SendData(uint8 dat)
{
IO0CLR = 0xff; //先清零，在送数据
IO0SET = dat&0xff;
}
/***********************************/
/**********写左命令*****************/
void Write_Cmd_L(uint8 cmd)
{
uint32 bak;
CSB_H();
CSA_L();
RW_H();
DI_L();
IO0DIR = 0x00003f00 ;
LCD_Delay(10);
do{
E_H();
LCD_Delay(100);
bak = IO0PIN;
E_L();
}while(bak&LCD_BUSY);
IO0DIR = 0x00003fff;
LCD_Delay(10);
RW_L();
LCD_Delay(10);
SendData(cmd);
LCD_Delay(100);
E_H();
LCD_Delay(100);
E_L();
}
/************************************/
/**********写右命令*****************/
void Write_Cmd_R(uint8 cmd)
{
uint32 bak;
CSB_L();
CSA_H();
RW_H();
DI_L();
IO0DIR = 0x00003f00 ;//定义数据口为输入方式
LCD_Delay(10);
do{
E_H();
LCD_Delay(100);
bak = IO0PIN;
E_L();
}while(bak&LCD_BUSY);
IO0DIR = 0x00003fff;//定义数据口为输出方式
LCD_Delay(10);
RW_L();
LCD_Delay(10);
SendData(cmd);
LCD_Delay(100);
E_H();
LCD_Delay(100);
E_L();
}
/************************************/
/**********写左数据*****************/
void Write_Dat_L(uint8 dat)
{
uint32 bak;
CSB_H();
CSA_L();
RW_H();
DI_L();
IO0DIR = 0x00003f00 ;
LCD_Delay(10);
do{
E_H();
LCD_Delay(100);
bak = IO0PIN;
E_L();
}while(bak&LCD_BUSY);
IO0DIR = 0x00003fff ;
LCD_Delay(10);
DI_H();
LCD_Delay(10);
RW_L();
LCD_Delay(10);
SendData(dat);
RW_H();
E_H();
LCD_Delay(100);
E_L();
}
/************************************/
/**********写右数据*****************/
void Write_Dat_R(uint8 dat)
{
uint32 bak;
CSB_L();
CSA_H();
RW_H();
DI_L();
IO0DIR = 0x00003f00 ;
LCD_Delay(10);
do{
E_H();
LCD_Delay(100);
bak = IO0PIN;
E_L();
}while(bak&LCD_BUSY);
IO0DIR = 0x00003fff ;
LCD_Delay(10);
DI_H();
LCD_Delay(10);
RW_L();
LCD_Delay(10);
SendData(dat);
LCD_Delay(100);
E_H();
LCD_Delay(100);
E_L();
}
/************************************/
/************写数据*****************/
void write_data(uint8 xpos,uint8 ypos,uint8 lcddata)
{ if(xpos<128)
{
if( ( xpos & 0xc0 )== 0 )
{
Write_Cmd_L( 0xb8 | ypos ); //写页命令
LCD_Delay(10);
Write_Cmd_L( 0x40 | xpos); //写行命令
LCD_Delay(10);
Write_Dat_L( lcddata ); //写左边数据
LCD_Delay(10);
}
else if( ( xpos & 0xc0 )== 0x40 )
{
Write_Cmd_R( 0xb8 | ypos );
LCD_Delay(10);
Write_Cmd_R( 0x40 | xpos );
LCD_Delay(10);
Write_Dat_R( lcddata );
LCD_Delay(10);
}
}
}
/************************************/
/************显示一个字符************/
void lcd_putchar8x8( uint8 x,uint8 y,uint8 ch )
{
uint8 i;
for( i = 0; i < 8; i ++ )
{
write_data( x+i, y, zifu[(ch - 0x20)*8 + i] );
LCD_Delay(10);
}
}
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