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TX-1C板
操作并行模式的1602液晶
液晶第1,2腳是gnd和vcc
第3腳是對(duì)比度調(diào)節(jié)
第4腳是數(shù)據(jù)/指令選擇端RS
第5腳是讀寫(xiě)選擇端R/W,我們這次只寫(xiě)不讀,故直接接地
第6腳是讀寫(xiě)使能EN
第7到14腳是數(shù)據(jù)口,我們接STC89C52RC的P0口
第15,16腳是背光源
最終液晶顯示
Tom is playing the TNT game!
- #include <reg52.h>
- #include "MY51.H"
-
- void write_data(uchar dataValue); //寫(xiě)數(shù)據(jù)
- void write_cmd(uchar cmdValue); //寫(xiě)指令
-
- uchar code tableLCD1[] ={"Tom is playing"};
- uchar code tableLCD2[] ={" the TNT game!"};
-
- void lcdInit() //初始化函數(shù)
- {
- dula=0; //
- wela=0; //防止數(shù)碼管誤顯,浪費(fèi)電流
- lcdEN=low; //給高脈沖之前的狀態(tài)
- lcdRS=high; //初始給高電平,其實(shí)上電默認(rèn)也是高電平
- write_cmd(0x38); //液晶顯示模式初始化
- write_cmd(0x0c); //打開(kāi)液晶,不顯示光標(biāo),光標(biāo)不閃爍
- write_cmd(0x06); //地址指針加加,且光標(biāo)加加
- write_cmd(0x01); //液晶數(shù)據(jù)指針和顯示清零
- }
-
- void write_cmd(uchar cmdValue) //寫(xiě)入指令
- {
- lcdRS=low; //剛上電時(shí)是高電平,低電平時(shí)是指令模式
- P0=cmdValue;
- delayms(1);
- lcdEN=high; //一個(gè)高脈沖把數(shù)據(jù)讀走
- delayms(1);
- lcdEN=low;
- }
-
- void write_data(uchar dataValue) //寫(xiě)入數(shù)據(jù)
- {
- lcdRS=high; //高電平是數(shù)據(jù)模式
- P0=dataValue;
- delayms(1);
- lcdEN=high; //給一個(gè)高脈沖
- delayms(1);
- lcdEN=low;
- }
-
- void lcdShow(uchar* pValue) //液晶顯示函數(shù)
- {
- while(*pValue!='\0')
- {
- write_data(*pValue);
- pValue++;
- }
- }
-
- void main()
- {
- lcdInit(); //初始化
- lcdShow(tableLCD1); //顯示第一行
- write_cmd(0x80+0x40); //重新設(shè)置數(shù)據(jù)顯示指針
- lcdShow(tableLCD2); //顯示第二行
- while(1);
- }
復(fù)制代碼
- #ifndef _MY51_H_
- #define _MY51_H_
- #include <math.h>
- #include <intrins.h>
-
- typedef int int16 ;
- typedef int INT16 ;
- typedef unsigned int uint16 ;
- typedef unsigned int UINT16 ;
- typedef unsigned short uint ;
- typedef unsigned short UINT ;
- typedef unsigned short word ;
- typedef unsigned short WORD ;
- typedef unsigned long uint32 ;
- typedef unsigned long UINT32 ;
- typedef unsigned long DWORD ;
- typedef unsigned long dword ;
- typedef signed long int32 ;
- typedef signed long INT32 ;
- typedef float float32 ;
- typedef double double64 ;
- typedef signed char int8 ;
- typedef signed char INT8 ;
- typedef unsigned char byte ;
- typedef unsigned char BYTE ; //WINDOWS的windef.h里面是這么定義的
- typedef unsigned char uchar ;
- typedef unsigned char UCHAR ;
- typedef unsigned char UINT8 ;
- typedef unsigned char uint8 ;
- typedef unsigned char BOOL ; //windows中定義BOOL為int
- typedef unsigned char bool ; //bool是c++的內(nèi)置類(lèi)型
-
- #define TRUE 1
- #define true 1
- #define FALSE 0
- #define false 0
-
- #define open 1 //open和close用于 標(biāo)志打開(kāi)和關(guān)閉狀態(tài)
- #define OPEN 1
- #define close 0
- #define CLOSE 0
- #define lock 0
- #define start 1
- #define START 1
- #define stop 0
- #define STOP 0
- #define keyDown 0
- #define keyUp 1
- #define gnd 0 //接地
- #define GND 0 //接地
- #define high 1 //高電平
- #define low 0 //低電平
- #define yes 1
- #define YES 1
- #define no 0
- #define NO 0
-
- sbit dula =P2^6; //段選鎖存器控制 控制筆段
- sbit wela =P2^7; //位選鎖存器控制 控制位置
-
- #define led P1 //燈總線控制
- sbit led0=P1^0; //8個(gè)led燈,陰極送低電平點(diǎn)亮
- sbit led1=P1^1;
- sbit led2=P1^2;
- sbit led3=P1^3;
- sbit led4=P1^4;
- sbit led5=P1^5;
- sbit led6=P1^6;
- sbit led7=P1^7;
-
- sbit keyS2=P3^4; //4個(gè)獨(dú)立按鍵
- sbit keyS3=P3^5;
- sbit keyS4=P3^6;
- sbit keyS5=P3^7;
- sbit lcdEN=P3^4; //液晶通訊使能端en,高脈沖有效
- sbit lcdRS=P3^5; //液晶第4腳,RS,低電平是指令模式,高電平是數(shù)據(jù)模式
- //sbit lcdR/W //液晶第5腳,低電平是寫(xiě)入模式,因?yàn)槲覀冎粚?xiě)不讀,所以接地
-
- sbit csda=P3^2; //DAC0832模數(shù)轉(zhuǎn)換cs口
- sbit adwr=P3^6; //ADC0804這個(gè)同DAC0832
- sbit dawr=P3^6;
- sbit adrd=P3^7; //ADC0804
- sbit beep=P2^3; //蜂鳴器
- void displaySMG(uint8 one,uint8 two,uint8 three,uint8 four,uint8 five,uint8 six,uint8 dot);
- void delayms(uint16 ms);
- void T0_Work();
-
- void delayms(uint16 ms) //軟延時(shí)函數(shù)
- {
- uint16 i,j;
- for(i=ms;i>0;i--)
- {
- for(j=113;j>0;j--)
- {}
- }
- }
- ///////////////////////////////////////////////////////////////////////////
- #define dark 0x11 //在段中,0x11是第17號(hào)元素,為0是低電平,數(shù)碼管不亮
- #define dotDark 0xff //小數(shù)點(diǎn)全暗時(shí)
- uint8 code table[]= { //0~F外加小數(shù)點(diǎn)和空輸出的數(shù)碼管編碼
- 0x3f , 0x06 , 0x5b , 0x4f , // 0 1 2 3
- 0x66 , 0x6d , 0x7d , 0x07 , // 4 5 6 7
- 0x7f , 0x6f , 0x77 , 0x7c , // 8 9 A B
- 0x39 , 0x5e , 0x79 , 0x71 , // C D E F
- 0x80 , 0x00 ,0x40 // . 空 負(fù)號(hào) 空時(shí)是第0x11號(hào)也就是第17號(hào)元素
- };
-
- uint8 dotTable[]={ //小數(shù)點(diǎn)位置
- 0xff , //全暗
- 0xfe , 0xfd , 0xfb , //1 2 3
- 0xf7 , 0xef , 0xdf //4 5 6
- };
- /////////////////////////////////////////////////////////////////////////////
- uint8 TH0Cout=0 ; //初值
- uint8 TL0Cout=0 ;
- uint16 T0IntCout=0; //中斷計(jì)數(shù)
- uint16 T0IntCountAll=0; //(N-1)/65536+1; //總中斷次數(shù)
- bool bT0Delay=false; //使用延時(shí)函數(shù)標(biāo)志,初始未用
- bool bT0Over=false; //中斷處理函數(shù)執(zhí)行結(jié)果之一
-
- void startT0(uint32 ms) //開(kāi)啟定時(shí)器
- {
- float32 t=ms/1000.0; //定時(shí)時(shí)間
- double64 fox =11.0592*(pow(10,6)); //晶振頻率
- uint32 N=(t*fox)/12 ; //定時(shí)器總計(jì)數(shù)值
-
- TH0Cout =(65536-N%65536)/256; //裝入計(jì)時(shí)值零頭計(jì)數(shù)初值
- TL0Cout =(65536-N%65536)%256;
- T0IntCountAll=(N-1)/65536+1; //總中斷次數(shù)
- TMOD=TMOD | 0x01; //設(shè)置定時(shí)器0的工作方式為1
-
- EA =open; //打開(kāi)總中斷
- ET0=open; //打開(kāi)定時(shí)器中斷
-
- TH0=TH0Cout; //定時(shí)器裝入初值
- TL0=TL0Cout;
- TR0=start; //啟動(dòng)定時(shí)器
- }
-
- void delayT0(uint32 ms) //硬延時(shí)函數(shù),自己亂寫(xiě)的不好用,求指點(diǎn)
- {
- startT0(ms); //啟動(dòng)定時(shí)器
- bT0Delay=true; //告訴T0定時(shí)器,起用延時(shí)模式
- while(bT0Over==false); //時(shí)間沒(méi)到的話繼續(xù)檢測(cè)
- bT0Over=false; //時(shí)間到了,讓標(biāo)志復(fù)位
- }
-
- void T0_times() interrupt 1 //T0定時(shí)器中斷函數(shù)
- {
- T0IntCout++;
- if(T0IntCout==T0IntCountAll) //達(dá)到總中斷次數(shù)值
- {
- T0IntCout=0; //中斷次數(shù)清零,重新計(jì)時(shí)
- bT0Over=true; //時(shí)間真的到了
- if(bT0Delay) //本次中斷是用來(lái)延時(shí)的嗎
- {
- TR0=stop; //如果是由延時(shí)函數(shù)開(kāi)啟T0的話,關(guān)閉T0
- return;
- }
-
- TH0=TH0Cout; //循環(huán)定時(shí)的話要重裝初值,每次定時(shí)1秒,重裝一次
- TL0=TL0Cout;
- T0_Work(); //工作函數(shù)
- }
- }
-
- ////////////////////////////////////////////////////////////////////////////////
- void displaySMG(uint8 oneWela,uint8 twoWela,uint8 threeWela,uint8 fourWela,uint8 fiveWela,uint8 sixWela,uint8 dot)
- {
- //控制6位數(shù)碼管顯示函數(shù),不顯示的位用參數(shù)dark,保留ADC0804的片選信號(hào)
- uint8 csadState=0x80&P0; //提取最高位,即ADC0804的片選信號(hào)
- uint8 tempP0=((csadState==0)?0x7f:0xff); //數(shù)碼管位選初始信號(hào),陰極全置高電平
- P0=tempP0; //0x7f表示數(shù)碼管不亮,同時(shí)ADC0804片選有效
- wela=1; //注:wela和dula上電默認(rèn)為1
- P0=tempP0;
- wela=0;
-
- P0=0; //由于數(shù)碼管是共陰極的,陽(yáng)極送低電平,燈不亮,防止燈誤亮
- dula=1;
- P0=0;
- dula=0; //段選數(shù)據(jù)清空并鎖定
- //////////////////////////oneWela
- { //消除疊影,數(shù)碼管陰極置高電平,并鎖存
- P0=tempP0;
- wela=1;
- P0=tempP0;
- wela=0;
- }
- P0=0; //低電平送到數(shù)碼管陽(yáng)極,避免數(shù)碼管誤亮
- dula=1;
- P0=table[oneWela]|((0x01&dot)?0x00:0x80); //送段數(shù)據(jù),疊加小數(shù)點(diǎn)的顯示
- dula=0;
-
-
- P0=tempP0; //送位數(shù)據(jù)前關(guān)閉所有顯示,并保持csad信號(hào)
- wela=1;
- P0=tempP0 & 0xfe; //0111 1110最高位是AD片選,低6位是數(shù)碼管位選,低電平有效
- wela=0;
- delayms(2);
-
- /////////////////////////twoWela
- { //消除疊影
- P0=tempP0;
- wela=1;
- P0=tempP0;
- wela=0;
- }
- P0=0;
- dula=1;
- P0=table[twoWela]|((0x02&dot)?0x00:0x80);
- dula=0;
-
- P0=tempP0;
- wela=1;
- P0=tempP0 & 0xfd; //0111 1101
- wela=0;
- delayms(2);
-
- /////////////////////////threeWela
- { //消除疊影
- P0=tempP0;
- wela=1;
- P0=tempP0;
- wela=0;
- }
- P0=0;
- dula=1;
- P0=table[threeWela]|((0x04&dot)?0x00:0x80);
- dula=0;
-
- P0=tempP0;
- wela=1;
- P0=tempP0 & 0xfb; //0111 1011
- wela=0;
- delayms(2);
-
- /////////////////////////fourWela
- { //消除疊影
- P0=tempP0;
- wela=1;
- P0=tempP0;
- wela=0;
- }
- P0=0;
- dula=1;
- P0=table[fourWela]|((0x08&dot)?0x00:0x80);
- dula=0;
-
- P0=tempP0;
- wela=1;
- P0=tempP0 & 0xf7; //0111 0111
- wela=0;
- delayms(2);
-
- /////////////////////////fiveWela
- { //消除疊影
- P0=tempP0;
- wela=1;
- P0=tempP0;
- wela=0;
- }
- P0=0;
- dula=1;
- P0=table[fiveWela]|((0x10&dot)?0x00:0x80);
- dula=0;
-
- P0=tempP0;
- wela=1;
- P0=tempP0 & 0xef; //0110 1111
- wela=0;
- delayms(2);
-
- /////////////////////////sixWela
- { //消除疊影
- P0=tempP0;
- wela=1;
- P0=tempP0;
- wela=0;
- }
- P0=0;
- dula=1;
- P0=table[sixWela]|((0x20&dot)?0x00:0x80);
- dula=0;
-
- P0=tempP0;
- wela=1;
- P0=tempP0 & 0xdf; //0101 1111
- wela=0;
- delayms(2);
- }
-
- #endif
復(fù)制代碼
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