icc avr LCD1602顯示屏程序
入口參數(shù)說明:
// control port
//#define SET_RS sbi(PORTB,5)
//#define CLR_RS cbi(PORTB,5)
//#define OUT_RS sbi(DDRB,5)
//#define SET_RW sbi(PORTB,6)
//#define CLR_RW cbi(PORTB,6)
//#define OUT_RW sbi(DDRB,6)
//#define SET_E sbi(PORTB,7)
//#define CLR_E cbi(PORTB,7)
//#define OUT_E sbi(DDRB,7)
// data port
//#define SET_D4 sbi(PORTD,4)
//#define CLR_D4 cbi(PORTD,4)
//#define OUT_D4 sbi(DDRD,4)
//#define SET_D5 sbi(PORTD,5)
//#define CLR_D5 cbi(PORTD,5)
//#define OUT_D5 sbi(DDRD,5)
//#define SET_D6 sbi(PORTD,6)
//#define CLR_D6 cbi(PORTD,6)
//#define OUT_D6 sbi(DDRD,6)
//#define SET_D7 sbi(PORTD,7)
//#define CLR_D7 cbi(PORTD,7)
//#define OUT_D7 sbi(DDRD,7)
// busy port
//#define GET_BF gbi(PIND,7)
//#define OUT_BF sbi(DDRD,7)
//#define IN_BF cbi(DDRD,7)
----------------------------------------------------------------------
接口定義:
LCD1602 ATmega16
1.GND -------- GND
2.VCC -------- VCC
3.V0 -------- V0
4.RS -------- 由外部程序定義
5.R/W -------- 由外部程序定義
6.E -------- 由外部程序定義
7.D0 -------- NC
8.D1 -------- NC
9.D2 -------- NC
10.D3 -------- NC
11.D4 -------- 由外部程序定義
12.D5 -------- 由外部程序定義
13.D6 -------- 由外部程序定義
14.D7 -------- 由外部程序定義
15.LED+ -------- VCC
16.LED- -------- GND
說明:
(1)使用ATmega16的7根IO口操作LCD1602
(2)該程序的優(yōu)點是:7根IO可任意定義,不需分布在固定的一組PORT口上
(3)該程序的缺點是:IO定義的寫法較為繁瑣
----------------------------------------------------------------------
待定參數(shù)說明:
//#define DELAY() {_nop_();_nop_();_nop_();}
----------------------------------------------------------------------
對外變量說明:
----------------------------------------------------------------------
對外函數(shù)說明:
----------------------------------------------------------------------
10101010101010101010101010101010101010101010101010101010101010101010*/
#ifndef LCD1602_H
#define LCD1602_H
#include "D:\ICC_H\CmmICC.H"
/* 待定參數(shù) */
#define DELAY() {NOP();NOP();NOP();NOP();NOP();NOP();NOP();NOP();}
/* 不考慮移植性的寫法 */
//uint8 bdata bdat;
//sbit bdat0=bdat^0;
//sbit bdat1=bdat^1;
//sbit bdat2=bdat^2;
//sbit bdat3=bdat^3;
//sbit bdat4=bdat^4;
//sbit bdat5=bdat^5;
//sbit bdat6=bdat^6;
//sbit bdat7=bdat^7;
/* 考慮移植性的寫法 */
uint8 bdat;
#define bdat0 (bdat&0x01)
#define bdat1 (bdat&0x02)
#define bdat2 (bdat&0x04)
#define bdat3 (bdat&0x08)
#define bdat4 (bdat&0x10)
#define bdat5 (bdat&0x20)
#define bdat6 (bdat&0x40)
#define bdat7 (bdat&0x80)
#define CGRAM0 0x00
#define CGRAM1 0x01
#define CGRAM2 0x02
#define CGRAM3 0x03
#define CGRAM4 0x04
#define CGRAM5 0x05
#define CGRAM6 0x06
#define CGRAM7 0x07
#define TRUE 1
#define FALSE 0
bool LCD1602Err = FALSE;
/*--------------------------------------------------------------------
函數(shù)名稱:LCD1602讀讀讀讀讀忙~
函數(shù)功能:都說是讀讀讀讀讀忙咯~
注意事項:對于高速CPU,應(yīng)加延時,好像是廢話~
提示說明:無
輸 入:
返 回:無
--------------------------------------------------------------------*/
void busy(void)
{
uint16 busyCounter=0;
bool busySta; //用于探測 lcd busy status
IN_BF;
SET_D4;
SET_D5;
SET_D6;
SET_D7;
DELAY();
CLR_RS;
DELAY();
SET_RW;
DELAY();
do
{
SET_E;
DELAY();
/* 這里讀取AC4-AC6位及BF的值,程序不需記錄AC4-AC6的值,所以不存儲 */
busySta=(bool)GET_BF;
CLR_E;
DELAY();
/* 讀取 "BUSY"時,"D4-D7"狀態(tài)可能已經(jīng)改變,必須再次設(shè)為輸出"1" */
SET_D4;
SET_D5;
SET_D6;
SET_D7;
DELAY();
SET_E;
DELAY();
/* 這里讀取AC0-AC3位的值,程序不需記錄AC0-AC3的值,所以不存儲 */
CLR_E;
DELAY();
if(busyCounter==1000)
{
LCD1602Err=TRUE; //標(biāo)識LCD1602錯誤,方便上繳系統(tǒng)報錯
return ; //避免由于LCD1602錯誤而導(dǎo)致程序阻塞
}
busyCounter++;
}
while(busySta);
LCD1602Err=FALSE;
CLR_E;
OUT_BF;
}
/*--------------------------------------------------------------------
函數(shù)名稱:LCD1602寫操作
函數(shù)功能:[!--empirenews.page--]
注意事項:對于高速CPU,應(yīng)加延時,好像是廢話~
提示說明:無
輸 入:
返 回:無
--------------------------------------------------------------------*/
void write(bool flag,uint8 dat) //flag=0:command,flag=1:data
{
bdat=dat;
busy();
if(flag)
SET_RS;
else
CLR_RS;
DELAY();
CLR_RW;
DELAY();
if(bdat4)
SET_D4;
else
CLR_D4;
if(bdat5)
SET_D5;
else
CLR_D5;
if(bdat6)
SET_D6;
else
CLR_D6;
if(bdat7)
SET_D7;
else
CLR_D7;
DELAY();
SET_E;
DELAY();
CLR_E;
DELAY();
if(bdat0)
SET_D4;
else
CLR_D4;
if(bdat1)
SET_D5;
else
CLR_D5;
if(bdat2)
SET_D6;
else
CLR_D6;
if(bdat3)
SET_D7;
else
CLR_D7;
DELAY();
SET_E;
DELAY();
CLR_E;
DELAY();
}
/*--------------------------------------------------------------------
函數(shù)名稱:LCD1602讀操作
函數(shù)功能:
注意事項:對于高速CPU,應(yīng)加延時,好像是廢話~
提示說明:無
輸 入:
返 回:無
--------------------------------------------------------------------*/
//void read(uint8 adr)
//{
//}
/*--------------------------------------------------------------------
函數(shù)名稱:LCD1602設(shè)置CGRAM內(nèi)容
函數(shù)功能:
注意事項:對于高速CPU,應(yīng)加延時,好像是廢話~
提示說明:調(diào)用LCD1602_setCG(0,userCh),則寫入用戶定義的字符"userCh"
輸 入:"adr"數(shù)據(jù)范圍:0-8,"buf"為用戶需要寫入的字符"userCh"
返 回:無
--------------------------------------------------------------------*/
void LCD1602_setCGRAM(uint8 adr,const uint8 buf[8])
{
uint8 i;
write(0,0x40+adr*8);
for(i=0;i<8;i++)
write(1,buf[i]);
/* 不得采樣下面寫法,因為傳入的是數(shù)組,最后一個不是’\0’ */
//while(*buf)
//write(1,*buf++);
}
/*--------------------------------------------------------------------
函數(shù)名稱:LCD1602命令設(shè)置
函數(shù)功能:
注意事項:對于高速CPU,應(yīng)加延時,好像是廢話~
提示說明:
輸 入:"CLR_SCR"/"GO_HOME"/"AC_INC"/"AC_DEC"...
返 回:無
--------------------------------------------------------------------*/
//---- function ------ 1 -------- 0 ----LcdWordPos--
// dispEn | Enable | DISAble | bit2
// cursorEn | Enable | Disable | bit1
// blinkEn | Enable | Disable | bit0
//------------------------------------------------------
// isACinc | INC_AC | DEC_AC | bit1
// shiftEn | Enable | Disable | bit0
//------------------------------------------------------
void LCD1602_setCmd(uint8 *str)
{
static bool dispEn =0;
static bool cursorEn=0;
static bool blinkEn =0;
static bool shiftEn =0;
static bool isACinc =0;
if(!strcmp(str,"CLR_SCR")) //clear screen
write(0,0x01);
else if(!strcmp(str,"GO_HOME")) //set AC go home
write(0,0x02);
/*--------------------------------------------------
isACinc & shiftEn 共用一個命令設(shè)置
--------------------------------------------------*/
else if(!strcmp(str,"INC_AC")) //set AC as inc mode
{
isACinc=1;
if(shiftEn)
write(0,0x07);
else
write(0,0x06);
}
else if(!strcmp(str,"DEC_AC")) //set AC as dec mode
{
isACinc=0;
if(shiftEn)
write(0,0x05);
else
write(0,0x04);
}
else if(!strcmp(str,"EN_SHIFT")) //enable shift
{
shiftEn=1;
if(isACinc)
write(0,0x07);
else
write(0,0x06);
}
else if(!strcmp(str,"DIS_SHIFT")) //disable shift
{
shiftEn=0;
if(isACinc)
write(0,0x05);
else
write(0,0x04);
}
/*--------------------------------------------------
dispEn & cursorEn & blinkEn共用一個命令設(shè)置
--------------------------------------------------*/
else if(!strcmp(str,"OPEN_LCD")) //opern lcd
{
dispEn=1;
if(cursorEn)
if(blinkEn)
write(0,0x0F);
else
write(0,0x0E);
else
if(blinkEn)
write(0,0x0D);
else
write(0,0x0C);
}
else if(!strcmp(str,"CLOSE_LCD")) //close lcd
{
dispEn=0;
if(cursorEn)
if(blinkEn)
write(0,0x0B);
else
[!--empirenews.page--]write(0,0x0A);
else
if(blinkEn)
write(0,0x09);
else
write(0,0x08);
}
else if(!strcmp(str,"OPEN_CURS")) //open cursor
{
cursorEn=1;
if(dispEn)
if(blinkEn)
write(0,0x0F);
else
write(0,0x0E);
else
if(blinkEn)
write(0,0x0B);
else
write(0,0x0A);
}
else if(!strcmp(str,"CLOSE_CURS")) //close cursor
{
cursorEn=0;
if(dispEn)
if(blinkEn)
write(0,0x0D);
else
write(0,0x0C);
else
if(blinkEn)
write(0,0x09);
else
write(0,0x08);
}
else if(!strcmp(str,"EN_BLINK")) //enable blink cursor
{
blinkEn=1;
if(dispEn)
if(cursorEn)
write(0,0x0F);
else
write(0,0x0D);
else
if(cursorEn)
write(0,0x0B);
else
write(0,0x09);
}
else if(!strcmp(str,"DIS_BLINK")) //disable blink cursor
{
blinkEn=0;
if(dispEn)
if(cursorEn)
write(0,0x0E);
else
write(0,0x0C);
else
if(cursorEn)
write(0,0x0A);
else
write(0,0x08);
}
/*--------------------------------------------------
dispEn & cursorEn & blinkEn共用一個命令設(shè)置
--------------------------------------------------*/
else if(!strcmp(str,"RIGHT_SCR")) //right shift screen
write(0,0x1c);
else if(!strcmp(str,"LEFT_SCR")) //left shift screen
write(0,0x18);
else if(!strcmp(str,"RIGHT_CURS")) //right shift cursor
write(0,0x14);
else if(!strcmp(str,"LEFT_CURS")) //left shift cursor
write(0,0x10);
}
/*--------------------------------------------------------------------
函數(shù)名稱:LCD1602初始化
函數(shù)功能:
注意事項:
提示說明:無
輸 入:
返 回:無
--------------------------------------------------------------------*/
void LCD1602_init(void)
{
OUT_RS;
OUT_RW;
OUT_E;
OUT_D4;
OUT_D5;
OUT_D6;
OUT_D7;
delay50ms(1);
CLR_D7;
CLR_D6;
SET_D5;
SET_D4;
DELAY();
CLR_RS;
DELAY();
CLR_RW;
SET_E;
DELAY();
CLR_E;
delay50us(200);
SET_E;
DELAY();
CLR_E;
delay50us(200);
SET_E;
DELAY();
CLR_E;
delay50us(200);
CLR_D7;
CLR_D6;
SET_D5;
CLR_D4;
DELAY();
SET_E;
DELAY();
CLR_E;
DELAY();
LCD1602_setCmd("OPEN_LCD");
LCD1602_setCmd("CLR_SCR");
LCD1602_setCmd("INC_AC");
//LCD1602_setCmd("OPEN_CURS");
//LCD1602_setCmd("GO_HOME");
}
/*--------------------------------------------------------------------
宏名稱:設(shè)置AC值
宏功能:設(shè)置AC值啦
注意事項:
提示說明:
輸 入:
返 回:無
--------------------------------------------------------------------*/
#define LCD1602_setAC(adr) write(0,adr)
/*--------------------------------------------------------------------
函數(shù)名稱:輸出一個字符
函數(shù)功能:
注意事項:對于高速CPU,應(yīng)加延時,好像是廢話~
提示說明:調(diào)用LCD1602_putc(0x80,’A’),則在第一行第一個字符處輸出’A’
輸 入:
返 回:無
--------------------------------------------------------------------*/
void LCD1602_putc(uint8 adr,uint8 ch)
{
write(0,adr);
write(1,ch);
}
/*--------------------------------------------------------------------
函數(shù)名稱:輸出一個字符串
函數(shù)功能:
注意事項:無
提示說明:調(diào)用LCD1602_puts(0x80,"waveShare"),則從第一行第一個位置開始輸出"waveShare"
輸 入:
返 回:無
--------------------------------------------------------------------*/
void LCD1602_puts(uint8 startAdr,uint8 *str)
{
/*
while(*str)
{
LCD1602_putc(addr++,*str++);
}
*/
//LCD1602_setCmd("AC++");
write(0,startAdr);
while(*str)
write(1,*str++);
}
/*--------------------------------------------------------------------
函數(shù)名稱:輸出一個數(shù)值(帶0)
函數(shù)功能:有時候你可能不是需要"123",而是需要"00123"吧
注意事項:無
提示說明:調(diào)用LCD1602_putd0(0x8F,123,5),則從0x8B開始到0X8F輸出"00123"
輸 入:
返 回:無
--------------------------------------------------------------------*/[!--empirenews.page--]
//for example:dat=123,length=6,output 000123
void LCD1602_putd0(uint8 endAdr,uint32 dat,uint8 length)
{
sint8 i;
speaData(dat,length);
//LCD1602_setCmd("AC++");
write(0,endAdr-length+1);
for(i=length-1;i>=0;i--)
write(1,dataElem[i]+0x30);
}
/*--------------------------------------------------------------------
函數(shù)名稱:輸出一個數(shù)值(不帶0)
函數(shù)功能:
注意事項:無
提示說明:調(diào)用LCD1602_putd(0x8F,123,5),則從0x8B開始到0X8F輸出" 123"
輸 入:
返 回:無
--------------------------------------------------------------------*/
void LCD1602_putd(uint8 endAdr,uint32 dat,uint8 length)
{
sint8 i;
sint8 effectLen;
if(dat>999999)
effectLen=7;
else if(dat>99999)
effectLen=6;
else if(dat>9999)
effectLen=5;
else if(dat>999)
effectLen=4;
else if(dat>99)
effectLen=3;
else if(dat>9)
effectLen=2;
else
effectLen=1;
speaData(dat,effectLen);
//LCD1602_setCmd("AC++");
if(length>effectLen)
{
write(0,endAdr-length+1);
for(i=length-effectLen-1;i>=0;i--)
write(1,’ ’);
}
for(i=effectLen-1;i>=0;i--)
{
if(i==0||dataElem[i])
{
write(0,endAdr-i);
for(;i>=0;i--)
write(1,dataElem[i]+0x30);
}
}
}
/*--------------------------------------------------------------------
函數(shù)名稱:輸出一個混合串
函數(shù)功能:
注意事項:最好不要加載這個函數(shù),因為它將占用將近1K空間
提示說明:調(diào)用LCD1602_sprintf(0x8F,12AB,4),則從0x8B開始到0X8F輸出"12ABok"
輸 入:
返 回:無
--------------------------------------------------------------------*/
//void LCD1602_sprintf(uint8 startAdr,uint32 dat,uint8 length)
//{
// /* clear the display area first here! */
// //LCD1602_puts(addr," ");
// sprintf(t,"%luok",dat);
// //LCD1602_setCmd("AC++");
// LCD1602_puts(addr,t);
//}
#endif