單片機(jī)液晶顯示程序

硬件電路:51最小系統(tǒng),沒有采用總線方式,直接的I/O形式,包括矩陣鍵盤,1602液晶,一個數(shù)碼管,LED4個,蜂鳴器等.

//單片機(jī)液晶秒表計算器完整修改版本

可以實(shí)現(xiàn)兩種功能的切換,其他功能自行對照代碼研究。4*4矩陣鍵盤,第一排前三列是實(shí)現(xiàn)小時\分鐘\秒的加.第二排前三列是實(shí)現(xiàn)小時\分鐘\秒的減.當(dāng)然還可以通過設(shè)置矩陣鍵盤的鍵值,來實(shí)現(xiàn)加\減\乘\除四則運(yùn)算,由數(shù)碼管顯示參與運(yùn)算的數(shù)字以及最終的運(yùn)算結(jié)果

#include

#include

#include

#include

#include

#define uchar unsigned char

#define uint unsigned int

#define wc 0x8fff

#define wd 0xdfff

#define rc 0xbfff

void displayListChar(unsigned char X, unsigned char Y, uchar DData);

uchar dispbuf[]={''0'',''1'',''2'',''3'',''4'',''5'',''6'',''7'',''8'',''9'','':''};

uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,

??????????????????????????? 0x92,0x82,0xf8,0x80,0x90,0x88,0x83,

?????????????????????????????? 0xc6,0xa1,0x86,0x8e,0x00

};

uchar second;

uchar temp1;?

uchar minute;

uchar hour;

uint tcnt,g;

uchar suanfa;

bit flag2;

bit flag1=1;//////控制計算器還是液晶調(diào)整的狀態(tài)燈

uint i=0,f,m,g,s,t;//??? for里的計數(shù)值,用于循環(huán)

??? // 用來標(biāo)記按了什么,如+,-.*,或是/

sbit P2_0=P2^0;// 定義P2.0口用來,當(dāng)計算值超過15時,P2.0所對應(yīng)的燈閃幾下

sbit P2_1=P2^1;// 定義P2.1口用來,當(dāng)除數(shù)為0時,P2.1所對應(yīng)的燈閃幾下

sbit P2_2=P2^2;

sbit P2_3=P2^3;

uint num[4]={0}; //用于記錄外面輸入的數(shù)字

uint Tablenum;

sbit P3_4=P3^4;

sbit P3_5=P3^5;

void jieguo(void);

void Settime(uchar verify);

uchar kbscan(void);///鍵盤掃描

void Show_Time(void);////顯示時間

void Settime(uchar verify);//verify 在這里為調(diào)整的意思

uint transfor( uchar key1);

void delay400ms(void) ;

void delay200ms(void);

void delay5ms(void);

void delay_1s(void);

void dlms(void);

void dlms1(void)

{???

????? uint g=20000;

????? while(--g);? //延時100mS鐘

}

void clr(void)

{

? i=0;

? suanfa=0;

? Tablenum=0;

? for(f=0;f<4;f++)

?? {

???? num[f]=0;

?? }

????? P2_0=1;

?????? P2_1=1;

?????? P2_2=1;

??? P2_3=0;

?? P3_4=0;

?? P3_5=1;

?? P0=0xc0;

?? P3_5=0;

}

//***************************************以下單片機(jī)液晶顯示****************************************************

void waitLcd()???????????????????? //just wait until 液晶不忙為止

? {

??? char temp;

??? bit flag=1;

??? while(flag==1)

??? {

?????? temp=XBYTE[rc];

?????? if (temp>>7==0) flag=0;

?????? P1=temp;

??? }

????? P1=0xff;

? }

??????????????????????????????????? //just wait until 液晶不忙為止

void WriteCommand_Lcd(bit isCheck,char c)???

? {

??? if (isCheck==1) waitLcd();

???? XBYTE[wc]=c;

? }

void writedata(char c)

{

??? waitLcd();

??? XBYTE[wd]=c;

}

void LcdInit()

? {

??? delay5ms();

? delay5ms();

?delay5ms();

?WriteCommand_Lcd(0,0x38); //三次顯示模式設(shè)置,不檢測忙信號

?delay5ms();

?WriteCommand_Lcd(0,0x38);

?delay5ms();

?WriteCommand_Lcd(0,0x38);

?delay5ms();

?WriteCommand_Lcd(1,0x38); //顯示模式設(shè)置,開始要求每次檢測忙信號,8位2行5*7

?WriteCommand_Lcd(1,0x08); //關(guān)閉顯示

?WriteCommand_Lcd(1,0x01); //清顯示

?WriteCommand_Lcd(1,0x06); // 文字不動,光標(biāo)右移

?WriteCommand_Lcd(1,0x0C); // 顯示開及光標(biāo)設(shè)置

? }

void displayListChar(unsigned char X, unsigned char Y, uchar DData)

? {

?Y &= 0x1;

?X &= 0xF;

?if (X <= 0xF)

?? {

??? Y &= 0x1;

?X &= 0xF;

?if (Y) X = 0x40;

?X = 0x80;

?WriteCommand_Lcd(0,X);

?writedata(dispbuf[DData]);

??? }

?}

//****************************************以上單片機(jī)液晶顯示驅(qū)動*****************************************************

//*************************************************

//**********************************以下顯示時間*****************************************************

void Show_Time(void)

{

?? displayListChar(0,0,hour/10);

?? displayListChar(1,0,hour%10);

?? displayListChar(2,0,10);

?? displayListChar(3,0,minute/10);

?? displayListChar(4,0,minute%10);

?? displayListChar(5,0,10);

?? displayListChar(6,0,second/10);

?? displayListChar(7,0,second%10);

?}

//**********************************以上顯示時間*****************************************************

void main(void)

{??

??? TMOD=0x02; //置自動重裝載模式

??? TH0=0x06;?? //設(shè)初值

??? TL0=0x06;? //設(shè)初值

??? TR0=1;???? //開始計數(shù)

??? ET0=1;??? //開定時器/計數(shù)器

??? EA=1;???? //中斷開

??? delay400ms();//啟動等待,等LCM講入工作狀態(tài)

??? LcdInit();???? //LCM初始化?

?????? P3_4=0;

?????? P2_0=1;

?????? P2_1=1;

?????? P2_2=0;

??? P2_3=1;

??? P3_5=1;

?????? P0=0xc0;

?????? P3_5=0;???

??? while(1)

?? {?

?????? uchar key;

???????? key=kbscan();

????????? dlms();

???????? // 0(11100111? 0xe7)????????

???????? ///*****************************以下是單片機(jī)液晶顯示兩種狀態(tài)的切換********************

???????? //***************************************************

???????? if(key==0xe7)

???????? {

??????????? dlms();

??????????? flag1=~flag1;

??????????? key=0x00;???

?????????????? if(flag1==1)

??????????????? {???????????

????????????????????? P2_0=1;

??????????????? P2_1=1;

??????????????? P2_2=0;///液晶狀態(tài)燈

???????????? P2_3=1;

??????????????? }????????

??????????????? if(flag1==0)

??????????????? {

????????????????? P2_0=1;

?????????????? P2_1=1;

????????????? P2_2=1;

??????????? P2_3=0;///計算器狀態(tài)燈

??????????????? }

?????????????? dlms1();

????????? }

???????? ///*****************************以上是單片機(jī)液晶顯示兩種狀態(tài)的切換