📄 lcd-162.c
字号:
// Project:LCD-162
// CPU:Atmega48
// F_CPU: Inner clock 8M
// Build:WinAvr2006.04.21(GCC)
// Design: 楼孟杰 marginlou@sohu.com
// 2007.02.4
#include <avr/io.h>
#include <avr/interrupt.h>
#include "avr/interrupt.h"
#include <avr/pgmspace.h>
#include <avr/eeprom.h>
#include <util/delay.h>
#include <stdlib.h>
#include <String.h>
//连接
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
// | | | | | | |__|__|__|__|__|__|__| | |
//GND | VO RS | E | + -
// VCC R/W PORTB
#define ON 1
#define OFF 0
#define DATA PORTB
#define DATA_PORT PORTB
#define DATA_DDR DDRB
#define DATA_PIN PINB
#define CMD_PORT PORTD
#define CMD_DDR DDRD
#define RS 0 //Pd0
#define RW 1 //Pd1
#define EN 2 //Pd2
#define SET_RS CMD_PORT|=_BV(RS)
#define CLR_RS CMD_PORT&=~_BV(RS)
#define SET_RW CMD_PORT|=_BV(RW)
#define CLR_RW CMD_PORT&=~_BV(RW)
#define SET_EN CMD_PORT|=_BV(EN)
#define CLR_EN CMD_PORT&=~_BV(EN)
void LCD_Init(void);
void LCD_Char(unsigned char Xpos,unsigned char Ypos,unsigned char Lchar);
void LCD_String(unsigned char Xpos,unsigned char Ypos,unsigned char *Lstring);
void LCD_MoveTo(unsigned char Xpos,unsigned char Ypos);
void LCD_CurShow(unsigned char Onoff);
void LCD_CharBlink(unsigned char Onoff);
void LCD_Command(unsigned char command);
void LCD_Wait(void);
char LCD_GetAddress(void);
void LCD_Data(unsigned char Lchar);
void LCD_Clear(void);
void LCD_HZ(void);
void LCD_HZ2(void);
//定义在ＦＬＡＳＨ中
const unsigned char FONTS[4][48]PROGMEM={
{
0x00,0x00,0x0F,0x01,0x01,0x0F,0x01,0x01,//--------
0x02,0x1A,0x02,0x02,0x02,0x1F,0x02,0x12,//"我"的上半
0x00,0x10,0x18,0x08,0x00,0x1E,0x00,0x08,//--------
0x01,0x07,0x0D,0x01,0x01,0x01,0x03,0x00,//--------
0x03,0x03,0x01,0x03,0x04,0x18,0x00,0x00,//"我"的下半
0x10,0x10,0x00,0x02,0x12,0x1A,0x0E,0x00,//--------
},
{
0x03,0x03,0x02,0x0f,0x08,0x08,0x08,0x08,//---------
0x01,0x03,0x03,0x12,0x14,0x14,0x18,0x12,//"的"的上半
0x00,0x00,0x00,0x0C,0x0C,0x0C,0x0C,0x0C,//---------
0x0F,0x08,0x08,0x08,0x08,0x0F,0x08,0x00,//---------
0x13,0x11,0x10,0x10,0x10,0x11,0x10,0x00,//"的"的下半
0x0C,0x0C,0x0C,0x0C,0x0C,0x1C,0x18,0x00,//---------
},
{
0x00,0x00,0x00,0x07,0x04,0x04,0x04,0x07,//
0x08,0x08,0x08,0x1F,0x08,0x08,0x08,0x1F,//
0x00,0x00,0x00,0x10,0x10,0x10,0x10,0x10,//
0x04,0x04,0x07,0x04,0x00,0x00,0x00,0x00,//
0x08,0x08,0x1F,0x08,0x08,0x08,0x0F,0x00,//
0x10,0x10,0x10,0x04,0x04,0x04,0x1c,0x00,//
},
{
0x0,0x0F,0x09,0x09,0x09,0x0F,0x09,0x09,//
0x03,0x01,0x01,0x1F,0x00,0x00,0x0E,0x09,//
0x00,0x00,0x02,0x1E,0x00,0x10,0x14,0x04,//
0x0F,0x09,0x09,0x09,0x09,0x09,0x13,0x00,//
0x09,0x09,0x0B,0x0A,0x0C,0x08,0x0F,0x00,//
0x04,0x14,0x14,0x14,0x0C,0x04,0x1C,0x00,//
}
};
//定义在EEPROM 中
unsigned char LOU[48] EEMEM={
0x03,0x03,0x03,0x03,0x0f,0x03,0x03,0x03,
0x01,0x0d,0x07,0x0f,0x13,0x03,0x05,0x09,
0x00,0x0c,0x08,0x1e,0x10,0x10,0x0c,0x06,
0x07,0x0f,0x0b,0x13,0x03,0x03,0x03,0x00,
0x03,0x1f,0x06,0x04,0x01,0x01,0x06,0x00,
0x00,0x1f,0x18,0x10,0x00,0x1c,0x06,0x00
};
//函数作用：读地址和BUSY标志
char LCD_GetAddress(void)
{
char address;
DATA_DDR=0;
SET_RW;
_delay_us(5);
SET_EN;
_delay_us(5);
address=DATA_PIN;
_delay_us(5);
CLR_EN;
CLR_RW;
_delay_us(50);
return address;
}
//函数作用:如果忙，则等待
void LCD_Wait(void)
{
while((LCD_GetAddress())&0x80);
}
//函数作用：送命令字
void LCD_Command(unsigned char command)
{
LCD_Wait();
DATA_DDR=0xFF;
DATA_PORT=command;
CLR_RW;
CLR_RS;//command
_delay_us(5);
SET_EN;
_delay_us(5);
CLR_EN;
_delay_us(5);
SET_RS;
SET_RW;
DATA_DDR=0x00;
_delay_us(50);
}
//函数作用:在位置Xpos,Ypos 处显示一个字符
void LCD_Char(unsigned char Xpos,unsigned char Ypos,unsigned char Lchar)
{
LCD_MoveTo(Xpos,Ypos);
LCD_Data(Lchar);
}
//函数作用：送数据
void LCD_Data(unsigned char Lchar)
{
LCD_Wait();
DATA_DDR=0xFF;
DATA_PORT=Lchar;
_delay_us(5);
CLR_RW;
SET_RS; //data
_delay_us(5);
SET_EN;
_delay_us(5);
CLR_EN;
CLR_RS;
SET_RW;
DATA_DDR=0x00;
_delay_us(50);
}
//函数作用：清屏
void LCD_Clear(void)
{
LCD_Command(0x01);
}
//函数作用：自定义字符并显示，
// 因为一次只能定义8个，而一个汉字要占6个字符，
// 所以不能同时显示2个以上的汉字。
void LCD_HZ(void)
{
unsigned char i=0,j=0,StartX=0;
_delay_ms(10);
StartX=1;
for(i=0;i<64;i++)
{
LCD_Command(0x40+i);
LCD_Data(0);
}
for(j=0;j<4;j++)
{
LCD_Clear();
_delay_ms(100);
for(i=0;i<48;i++)
{//也是CGRAM的地址AC不能到0,进行了这样的处理
if(i==0)
LCD_Command(0x40);
else
LCD_Command(0x40+i-1);
LCD_Data(pgm_read_byte(FONTS[0]+i+j*48));
}
_delay_ms(100);
LCD_Char(StartX+0+j*3,0,0x00);
LCD_Char(StartX+1+j*3,0,0x01);
LCD_Char(StartX+2+j*3,0,0x02);
LCD_Char(StartX+0+j*3,1,0x03);
LCD_Char(StartX+1+j*3,1,0x04);
LCD_Char(StartX+2+j*3,1,0x05);
for(i=0;i<10;i++)_delay_ms(8);
}
}
void LCD_HZ2(void)
{
unsigned char i=0,StartX=0;
_delay_ms(10);
StartX=1;
for(i=0;i<64;i++)
{
LCD_Command(0x40+i-1);
LCD_Data(0);
}
LCD_Clear();
_delay_ms(100);
for(i=0;i<48;i++)
{//也是CGRAM的地址AC不能到0,进行了这样的处理
if(i==0)
LCD_Command(0x40);
else
LCD_Command(0x40+i-1);
LCD_Data(eeprom_read_byte(LOU+i));
}
_delay_ms(100);
LCD_Char(StartX+0,0,0x00);
LCD_Char(StartX+1,0,0x01);
LCD_Char(StartX+2,0,0x02);
LCD_Char(StartX+0,1,0x03);
LCD_Char(StartX+1,1,0x04);
LCD_Char(StartX+2,1,0x05);
}
//函数作用：在Xpos,Ypos处显示字符串，
// 此函数实际使用时有问题，
// 主要是光标不能回复到(0,0)
void LCD_String(unsigned char Xpos,unsigned char Ypos,unsigned char *Lstring)
{
LCD_MoveTo(Xpos,Ypos);
while(*Lstring) LCD_Data(*Lstring++);
}
//函数作用:把光标移动到 Xpos,Ypos
void LCD_MoveTo(unsigned char Xpos,unsigned char Ypos)
{
unsigned char address=0;
if(Xpos<=0) Xpos=0;
if(Ypos<=0) Ypos=0;
if(Xpos>=15) Xpos=15;
if(Ypos>=1) Ypos=1;
address=0x80+Xpos+0x40*Ypos;
LCD_Command(address);
//好像有问题，MoveTo(0,0),实际在第一行第二个字符
//一直不能定位到第一个字符处。？？？
}
//函数作用：光标的打开，关闭
void LCD_CurShow(unsigned char Onoff)
{
if(Onoff==0)
LCD_Command(0x0C);
else
LCD_Command(0x0E);
}
//函数作用：光标的闪烁 的 开和关
void LCD_CharBlink(unsigned char Onoff)
{
if(Onoff==0)
LCD_Command(0x0C);
else
LCD_Command(0x0D);
}
//函数作用:LCD初始化
void LCD_Init(void)
{
DATA_PORT=0;
DATA_DDR=0xFF;
CMD_PORT=0;
CMD_DDR=0xFF;
//_delay_ms(100);
LCD_Command(0x38);
_delay_ms(5);
LCD_Command(0x38);
_delay_us(100);
LCD_Command(0x38);
_delay_us(100);
LCD_Command(0x38);//8bit mode, 2X16, 5X7 FONTS
LCD_Command(0x0C); //
LCD_Command(0x01); //clear screen
LCD_Command(0x06); //cursor shift
}
int main(void)
{
unsigned char i=0;
unsigned char mtimer[10]="00:00:00 ";
unsigned char Hou=0;
unsigned char Min=0;
unsigned char Sec=0;
LCD_Init();
LCD_Clear();
LCD_CharBlink(OFF);
LCD_HZ();
LCD_Clear();
LCD_String(0,0,"System Init OK!");
LCD_String(0,1,"My AVR world.");
//LCD_CharBlink(ON);
for(i=0;i<10;i++) _delay_ms(300);
LCD_Clear();
LCD_HZ2();
_delay_ms(100);
LCD_String(7,0,"TIME ");
i=0;
while(1)
{
if(Hou<10)
{mtimer[0]='0';
mtimer[1]='0'+Hou;
}
else
{
mtimer[0]='0'+Hou/10;
mtimer[1]='0'+Hou%10;
}
if(Min<10)
{mtimer[3]='0';
mtimer[4]='0'+Min;
}
else
{
mtimer[3]='0'+Min/10;
mtimer[4]='0'+Min%10;
}
if(Sec<10)
{mtimer[6]='0';
mtimer[7]='0'+Sec;
}
else
{
mtimer[6]='0'+Sec/10;
mtimer[7]='0'+Sec%10;
}
LCD_String(5,1,mtimer);
Sec++;
_delay_ms(200);
if(Sec==60)
{
Sec=0;
Min++;
if(Min==60)
{
Min=0;
if(Hou++==24)Hou=0;
}
}
}
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -