?? 1602液晶的程序移植到了atmega8上.txt
字號(hào):
把明浩的1602的程序移植到了ATMEGA8上，共享一下。
/*============================================================
使用1602液晶顯示的實(shí)驗(yàn)例子 明浩 2004/2/27
==============================================================
SMC1602A(16*2)模擬口線接線方式
連接線圖:
---------------------------------------------------
|LCM-----51 | LCM-----51 | LCM------51 |
--------------------------------------------------|
|DB0-----P1.0 | DB4-----P1.4 | RW-------P2.0 |
|DB1-----P1.1 | DB5-----P1.5 | RS-------P2.1 |
|DB2-----P1.2 | DB6-----P1.6 | E--------P2.2 |
|DB3-----P1.3 | DB7-----P1.7 | VLCD接1K電阻到GND|
---------------------------------------------------
SMC1602A(16*2)模擬口線接線方式
連接線圖:
---------------------------------------------------
|LCM-----M8 | LCM-----M8 | LCM------M8 |
----------------------------------------------|
|DB0-----PB0 | DB4-----PB4 | RW-------PD6 |
|DB1-----PB1 | DB5-----PB5 | RS-------PD7 |
|DB2-----PB2 | DB6-----PB6 | E--------PD5 |
|DB3-----PB3 | DB7-----PB7 | VLCD接1K電阻到GND|
---------------------------------------------------
[注:AT89S51使用12M晶振]
=============================================================*/
/*************************************************************
以前的c51的液晶顯示模塊移植到avr---atmega8中
*************************************************************/
/**************************************************************
#define LCM_RW P1_1 //定義引腳
#define LCM_RS P1_2
#define LCM_E P1_0
#define LCM_Data P2
#define Busy 0x80 //用于檢測LCM狀態(tài)字中的Busy標(biāo)識(shí)
#include <at89x51.h>
**********************************************************/
#include <iom8V.h>
#include <macros.h>
#define CTLPORT PORTD //模擬總線用了PD口的PD5,PD6,PD7
#define LCD_RS 7 // pin-0 on CTLPORT
#define LCD_RW 6 // pin-1 on CTLPORT
#define LCD_E 5 // pin-2 on CTLPORT
#define SET_LCD_E CTLPORT|=(1<<LCD_E) // LCD: E = 1
#define CLR_LCD_E CTLPORT&=~(1<<LCD_E) // LCD: E = 0
#define SET_LCD_RW CTLPORT|=(1<<LCD_RW) // LCD: R/W = 1 (read)
#define CLR_LCD_RW CTLPORT&=~(1<<LCD_RW) // LCD: R/W = 0 (write)
#define SET_LCD_RS CTLPORT|=(1<<LCD_RS) // LCD: R/S = 1 (data reg)
#define CLR_LCD_RS CTLPORT&=~(1<<LCD_RS) // LCD: R/S = 0 (status reg)
//#define DataPortOUT PORTB // 數(shù)據(jù)端口PB口
//#define DataPortIN PINB
#define DataPortfx DDRB
#define Busy 0x80
#define LCM_Data PORTB // 數(shù)據(jù)端口PB口
#define LCM_Data1 PINB // 數(shù)據(jù)端口PB口
#pragma data:code
unsigned char const table_1[] = {"1515484166"};
unsigned char const table_2[] = {"0123456789"};
#pragma data:data
void WriteDataLCM(unsigned char WDLCM);
void WriteCommandLCM(unsigned char WCLCM,unsigned char BuysC);
unsigned char ReadDataLCM(void);
unsigned char ReadStatusLCM(void);
void LCMInit(void);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char const *DData);
void Delay5Ms(void);
void Delay400Ms(void);
void main(void)
{
unsigned char i;
DDRD=0XFF;//PD設(shè)為輸出
DDRB=0XFF;//PB設(shè)為輸出
Delay400Ms(); //啟動(dòng)等待，等LCM講入工作狀態(tài)
LCMInit(); //LCM初始化
Delay5Ms(); //延時(shí)片刻(可不要)
DisplayListChar(0, 0, table_1);
DisplayListChar(0, 1, table_2);
/*Delay400Ms(); //啟動(dòng)等待，等LCM進(jìn)入工作狀態(tài)
WriteCommandLCM(0x08,1); //關(guān)閉顯示
WriteCommandLCM(0x01,1); //顯示清屏
WriteCommandLCM(0x06,1); // 顯示光標(biāo)移動(dòng)設(shè)置
WriteCommandLCM(0x0f,1); // 顯示開及光標(biāo)設(shè)置，閃
for(i=0;i<8;i++)
{
DisplayOneChar(i, 0, table_1[i]); //顯示單個(gè)字符
}
WriteCommandLCM(0x07,1); // 顯示光標(biāo)移動(dòng)設(shè)置
for(i=0;i<8;i++)
{
DisplayOneChar(i+8, 0, table_2[i]); //顯示單個(gè)字符
}
WriteCommandLCM(0x0c,1); // 顯示開及光標(biāo)設(shè)置，不閃
ReadDataLCM();//測試用句無意義*/
while(1);
}
//寫數(shù)據(jù)
void WriteDataLCM(unsigned char WDLCM)
{
ReadStatusLCM(); //檢測忙
LCM_Data = WDLCM;
SET_LCD_RS;
CLR_LCD_RW;
SET_LCD_RS;
CLR_LCD_RW;
CLR_LCD_E; //若晶振速度太高可以在這后加小的延時(shí)
CLR_LCD_E; //延時(shí)
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
SET_LCD_E;
SET_LCD_E;
}
//寫指令
void WriteCommandLCM(unsigned char WCLCM,unsigned char BuysC) //BuysC為0時(shí)忽略忙檢測
{
if (BuysC) ReadStatusLCM(); //根據(jù)需要檢測忙
LCM_Data = WCLCM;
CLR_LCD_RS;
CLR_LCD_RW;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
SET_LCD_E;
SET_LCD_E;
}
//讀數(shù)據(jù)
unsigned char ReadDataLCM(void)
{
SET_LCD_RS;
SET_LCD_RW;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
SET_LCD_E;
SET_LCD_E;
return(LCM_Data);
}
//讀狀態(tài)
unsigned char ReadStatusLCM(void)
{
DDRB=0x00; //輸入
CLR_LCD_RS;
SET_LCD_RW;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
CLR_LCD_E;
SET_LCD_E;
while (LCM_Data1 & Busy); //檢測忙信號(hào)
DDRB=0xff;//變回輸出
return(LCM_Data1);
}
void LCMInit(void) //LCM初始化
{
LCM_Data = 0;
WriteCommandLCM(0x38,0); //三次顯示模式設(shè)置，不檢測忙信號(hào)
Delay5Ms();
WriteCommandLCM(0x38,0);
Delay5Ms();
WriteCommandLCM(0x38,0);
Delay5Ms();
WriteCommandLCM(0x38,1); //顯示模式設(shè)置,開始要求每次檢測忙信號(hào)
WriteCommandLCM(0x08,1); //關(guān)閉顯示
WriteCommandLCM(0x01,1); //顯示清屏
WriteCommandLCM(0x06,1); // 顯示光標(biāo)移動(dòng)設(shè)置
WriteCommandLCM(0x0C,1); // 顯示開及光標(biāo)設(shè)置
}
//按指定位置顯示一個(gè)字符
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{
Y &= 0x1;
X &= 0xF; //限制X不能大于15，Y不能大于1
if (Y) X |= 0x40; //當(dāng)要顯示第二行時(shí)地址碼+0x40;
X |= 0x80; //算出指令碼
WriteCommandLCM(X, 0); //這里不檢測忙信號(hào)，發(fā)送地址碼
WriteDataLCM(DData);
WriteCommandLCM(X, 0); //光標(biāo)返回，調(diào)節(jié)時(shí)很重要
}
//按指定位置顯示一串字符
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char const *DData)
{
unsigned char ListLength;
ListLength = 0;
Y &= 0x1;
X &= 0xF; //限制X不能大于15，Y不能大于1
while (DData[ListLength]>0x20) //若到達(dá)字串尾則退出
{
if (X <= 0xF) //X坐標(biāo)應(yīng)小于0xF
{
DisplayOneChar(X, Y, DData[ListLength]); //顯示單個(gè)字符
ListLength++;
X++;
}
}
}
//5ms延時(shí)
void Delay5Ms(void)
{
unsigned int TempCyc = 5552;
while(TempCyc--);
}
//400ms延時(shí)
void Delay400Ms(void)
{
unsigned char TempCycA = 9;
unsigned int TempCycB;
while(TempCycA--)
{
TempCycB=7777;
while(TempCycB--);
};
}
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