192第19章实践项目开发指导

19践项目开发指导--多功能电子钟章节的PDF版地址可以从主站找到：，#ifndef_KEY_BOARD_H#define#ifndefvoidKeyScan();voidvoidKeyAction(uint8#define_KEY_BOARD_C#include"config.h"#include"keyboard.h"#include"Time.h"#include"main.h"constuint8codeKeyCodeMap[4][4]={//矩阵按键到PC标准键码的1','2','3',0x26},//1234','5','6',0x25},//4567','8','9',0x28},//78900x1B,0x0D,0x27}//0、ESC键、回车键、向右键uint8pdataKeySta[4][4]={//{1,1,1,1},{1,1,1,1},{1,1,1,1},{1,1,1,/**/voidKeyAction(uint8keycode){if((keycode>='0&&(keycode<='9'))//{}elseif(keycode0x25)//{}elseif(keycode0x27)//{}elseif(keycode0x0D)//回车键，切换运行状态/{}elseif(keycode0x1B)//Esc键，静音/{if(staSystemE_NORMAL){staMute=} //处于设置状态时退出设{}}}/**/voidKeyDriver(){uint8i,staticuint8pdatabackup[4][4]={//{1,1,1,1},{1,1,1,1},{1,1,1,1},{1,1,1,for(i=0;i<4;i++)//4*4{for(j=0;j<4;{if(backup[i][j] //检测按键动{ifbackup[i][j] //按键按下时执行动{KeyAction(KeyCodeMap[i][j]);//调用按键动作函}backup[i][j] //刷新前一次的备份}}}}/*按键扫描函数，需在定时中断中调用，调用间隔1ms*/voidKeyScan(){uint8staticuint8keyout=0;//矩阵按键扫描输出索引staticuint8keybuf[4][4]={//矩阵按键扫描缓冲区{0xFF,0xFF,0xFF,0xFF},{0xFF,0xFF,0xFF,{0xFF,0xFF,0xFF,0xFF},{0xFF,0xFF,0xFF,//4keybuf[keyout][0]=(keybuf[keyout][0]<<1)|KEY_IN_1;keybuf[keyout][1]=(keybuf[keyout][1]<<1)|KEY_IN_2;keybuf[keyout][2]=(keybuf[keyout][2]<<1)|KEY_IN_3;keybuf[keyout][3]=(keybuf[keyout][3]<<1)|//消抖后更新按键状for(i=0;i<4;i++)//44{if((keybuf[keyout][i]&0x0F)=={//404*4msKeySta[keyout][i]=}elseif((keybuf[keyout][i]&0x0F)=={//414*4msKeySta[keyout][i]=}} keyout&=0x03;//4switch(keyout)//根据索引值，当前输出引脚，拉低下次的输出引{case0:KEY_OUT_4=1;KEY_OUT_1=0;case1:KEY_OUT_1=1;KEY_OUT_2=0;case2:KEY_OUT_2=1;KEY_OUT_3=0;case3:KEY_OUT_3=1;KEY_OUT_4=0;break;default:break;}} 把红外按键的代码解析出来后，再去做相应的操作显得有点多余了。的处理方式是，把红外的按键代码解析出来，和板载按键进 对应关系，不同的红外按 为板子上的不同的板载按键值就可以了，这样只需要写一套按键驱动序，红外的代码只做解析和功能即可/***********************Infrared.h文件程序源代码#ifndef_INFRARED_H#define#ifndefvoidInitInfrared();voidInfraredDriver();#define_INFRARED_C#include"config.h"#include"Infrared.h"#includeconstuint8codeIrCodeMap[][2]={//红外键码到标准PC键码的{0x450x00},{0x46,0x00{0x470x1B},开关->无Mode->无静音-{0x44,0x00},{0x40,0x25},{0x43,0x27},//->无后退->向左前进->向{0x070x00},{0x15,0x28{0x090x26},EQ->无减号->->{0x160x30},{0x19,0x1B},0x0D,0x0D},//'0'->'0'箭头->ESCU/SD->{0x0C,0x31},{0x18,0x32},{0x5E,0x33},//'1'->'1''2'->'2''3'-{0x08,0x34},{0x1C,0x35},{0x5A,0x36},//'4'->'4''5'->'5''6'-{0x42,0x37},{0x52,0x38},{0x4A,0x39},//'7'->'7''6'->'8''9'-bitirflag0;//1uint8ircode[4];//红外代码接收缓冲区/**/voidInfraredDriver(){uint8if{irflag=for(i=0;i<sizeof(IrCodeMap)/sizeof(IrCodeMap[0]);i++)//遍历{if(ircode[2]IrCodeMap[i][0])// //用对应的码执行函数调度 //直接调用按键动作函数即可}}}}/**/voidInitInfrared(){IR_INPUT1;//确保红外接收引脚被TMOD&=0x0F;//清零T1的控制位TMOD|=0x10;//配置T11TR1 //停止T1ET1= //T1中IT1 //设置INT1为负边沿触EX1 //使能INT1中}/**/uint16GetHighTime(){TH10;//清零T1TL1=TR11;//启动T1while(IR_INPUT)//10{if(TH1>= //当T10x400018msbreak;//}}TR10;//停止T1return(TH1*256+TL1);//T1计数值为16bit整型数，并返回该}/**/uint16GetLowTime(){TH10;//清零T1TL1=TR11;//启动T1whileIR_INPUT)//01{if(TH1>= //当T10x400018msbreak;//}}TR10;//停止T1return(TH1*256+TL1);//T1计数值为16bit整型数，并返回该}/*INT1中断服务函数，执行红外接收及*/voidEXINT1_ISR()interrupt2{uint8i,j;uint8byt;uint16time;//接收并判定引导码的9ms低电time=if((time<7833)||(time>8755))// IE1=0;//退出前清零INT1中断标志}//接收并判定引导码的4.5ms高电time=if((time<3686)||(time>4608))// IE1=0;}//4for(i=0;i<4;i++)//4{for(j=0;j<8;j++)//8个{//接收判定每bit560ustime=if((time<313||(time>718)) IE1=0;}//接收每bitbittime=if((time>313&&(time<718 //在此范围内说明该bit0byt>>=1;//因低位在先，所以数据右移，为}elseiftime>1345)&&(time<1751)) //在此范围内说明该bit值为byt1;//因低位在先，所以数据右移，byt|=0x80;//置1}else//{IE1=}}ircode[i]byt;//}irflag1;//IE1 //退出前清零INT1中断标}这一切底层的驱动完成之后，就可以整理调试main.c和Time.c内的功能代码了。一边添加功能一边调试，最终的功能代码调试出来，在KST-51开发板上做验证。这一切都完事之后，可以添加一项新功能，就是DS18B20温度传#ifndef_DS18B20_H#define#ifndefbitbitGet18B20Temp(int16#define_DS18B20_C#include"config.h"#include"DS18B20.h"/*延时函数，延时时间(t*10)us*/voidDelayX10us(uint8t){do}while(--}/**/bitGet18B20Ack(){bitEA=0;//总中IO_18B20 //产生500us复位脉IO_18B20=1; //延时ack=IO_18B20;//存在脉冲while(!IO_18B20等待存在脉冲结束EA=1;//重新使能总中断return}/*向DS18B20写入一个字节，dat-*/voidWrite18B20(uint8dat){uint8EA=0;//总中for(mask=0x01mask!=0;mask<<=1)//8个{IO_18B20 //2us低电平脉if((mask&dat)0)//bitIO_18B20=IO_18B20= //延时IO_18B20 //拉高通信引}EA1;//}/*从DS18B20一个字节，返回值-读到的字节*/uint8Read18B20(){uint8dat;uint8mask;EA=0;//总中for(mask=0x01;mask!=0;mask<<=1)//低位在先，依次8个{

IO_18B20 //2us低电平脉IO_18B20 //结束低电平脉冲，等待18B20输出 //延时if //通信引脚上的dat&=dat|= //再延时}EA1;//return}/*18B20温度转换，返回值-*/bitStart18B20(){bitackGet18B20Ack();//18B20if(ack //如18B20正确应答，则启动一次转{Write18B20(0xCC);//跳过ROMWrite18B20(0x44);//}return~ack;//ack==0表示操作成功，所以返回值对其取}/*DS18B20转换的温度值，返回值-表示是否成功*/bitGet18B20Temp(int16*temp){bituint8LSBMSB16bitack //执行总线复位，并获取18B20应if(ack== //如18B20正确应答，则温度{Write18B20(0xCC);//跳过ROMWrite18B20(0xBE);//发送读命令LSBRead18B20();//读温度值的低字节MSBRead18B20();//*temp=((int16)MSB<<8)+LSB;//为16bit整型}return~ack;//ack==0表示操作应答，所以返回值为其取反}#ifndef_TIME_H#define#ifndef_TIME_CexternbitstaMute;voidvoidRefreshDate(uint8ops);voidRefreshAlarm();voidAlarmMonitor();voidSwitchSystemSta();voidCancelCurSet();voidSetRightShift();voidSetLeftShift();voidInputSetNumber(uint8#define_TIME_C#include"config.h"#include"DS1302.h"#include"LedBuzzer.h"#include"Lcd1602.h"#include"Time.h"#include"main.h"uint8codeWeekMod[]={//星期X字符0xFF,0x990x000x00,0x00,0x810xC30xE7,//星期日(红心0xEF,0xE7,0xE30xE70xE70xE7,0xE7,0xC3,//0xC3,0x810x9D,0x87,0xC3,0xF90xC10x81,//0xC3,0x810x9D,0xC7,0xC70x9D,0x810xC3,//0xCF0xC70xC3,0xC9,0xC9,0x81,0xCF,0xCF,//0x81,0xC1,0xF9,0xC3,0x870x9D,0x810xC3,//0xC3,0x810xF9,0xC3,0x810x99,0x810xC3,//bitstaMute0;//uint8AlarmHour0x07;//闹钟时间的小时数uint8AlarmMin=0x30;//闹钟时间的分钟数structsTimeCurTime;//当前日期时间uint8SetIndex0;//uint8pdataSetAlarmHour;//闹钟小时数设置缓冲uint8pdataSetAlarmMin;//闹钟分钟数设置缓冲structsTimepdataSetTime;///**/voidRefreshTime(){ ShowLedNumber(5,CurTime.hour>>4,0);//时ShowLedNumber(4,CurTime.hour&0xF,1);ShowLedNumber(3,CurTime.min>>4,0);//分ShowLedNumber(2,CurTime.min&0xF,1);ShowLedNumber(1,CurTime.sec>>4,0);//秒ShowLedNumber(0,CurTime.sec&0xF,0);ShowLedArray(WeekMod+CurTime.week*8);//星期}/*日期刷新函数，ops-00*/voidRefreshDate(uint8ops){uint8pdatastr[12];staticuint8backup=0;if((backup!=CurTime.day)||{str[0]CurTime.year>>12)&0xF)0';//4str[1]=((CurTime.year>>8)&0xF)+'0';str[2]=((CurTime.year>>4)&0xF)+'0';str[3]=(CurTime.year&0xF)+'0';str[4] //分隔str[5](CurTime.mon4)0';//月份str[6]=(CurTime.mon&0xF)+'0';str[7] //分隔str[8](CurTime.day40';//日期str[9]=(CurTime.day&0xF)+'0';str[10]='\0'; LcdShowStr(0,0,str);//显示到液晶上backupCurTime.day;//刷新上次日期值}}/**/voidRefreshAlarm(){uint8pdataLcdShowStr(0,1,"Alarmat"); str[0]=(AlarmHour>>4)+'0';//闹钟小时数str[1]=(AlarmHour&0xF)+'0';str[2] //分隔str[3]=(AlarmMin>>4)+'0'; str[4]=(AlarmMin&0xF)+'0';str[5] //字符串结束LcdShowStr(9,1 //显示到液晶}/*闹钟函数，抵达设定的闹钟时间时执行闹铃*/voidAlarmMonitor(){if((CurTime.hour==AlarmHour&&(CurTime.min==AlarmMin{ifstaMute)//staBuzzer~staBuzzer;//实现蜂鸣器断续鸣叫staBuzzer=}{staMute=staBuzzer=}}/**/voidShowSetTime(){uint8pdatastr[0]=((SetTime.year>>4)&0xF)0';//2str[1]=(SetTime.year&0xF)+str[2]='-str[3]=(SetTime.mon4'0';//月份str[4]=(SetTime.mon&0xF)+'0';str[5]='-str[6]=(SetTime.day40';//日期str[7]=(SetTime.day&0xF)+'0';str[8]='-str[9]=(SetTime.week&0xF)0星期str[10]='';str[11(SetTime.hour4)0';//小时str[12]=(SetTime.hour&0xF)+'0';str[13]=str[14(SetTime.min4)0';//分钟str[15]=(SetTime.min&0xF)+'0';str[16]=LcdShowStr(0,0,"SetDateTime");//显示提示标题LcdShowStr(0,1, //显示设置时间}/**/voidShowSetAlarm(){uint8pdatastr[0](SetAlarmHour4)0';//小时str[1]=(SetAlarmHour&0xF)+'0';str[2]=str[3]=(SetAlarmMin>>4)+'0'; str[4]=(SetAlarmMin&0xF)+'0';str[5]=LcdShowStr(0,0,"SetAlarm");//显示提示标题LcdShowStr(0,1, //显示设定闹钟}/**/voidSwitchSystemSta(){if(staSystemE_NORMAL)//{staSystem=SetTime.yearCurTime.year;//当前时间拷贝到时间设置缓冲区中SetTime.mon=CurTime.mon;SetTime.day=CurTime.day;SetTime.hour=CurTime.hour;SetTime.min=CurTime.min;SetTime.sec=CurTime.sec;SetTime.week=CurTime.week;LcdClearScreen();//液晶清屏 SetIndex=255; LcdOpenCursor();//}elseif(staSystemE_SET_TIME)//{staSystem=SetTime.sec //0 SetAlarmHourAlarmHour;当前闹钟值拷贝到设置缓冲区SetAlarmMin=AlarmMin;LcdClearScreen();//液晶清屏 SetIndex=255; }else//{staSystem=AlarmHourSetAlarmHour;//设定的闹钟值写入闹钟时间AlarmMin=SetAlarmMin;LcdCloseCursor();//关闭光标LcdClearScreen();//液晶清屏RefreshTime();//刷新当前时间RefreshDate(1);//立即刷新日期显示RefreshTemp(1);//立即刷新温度显示RefreshAlarm();//闹钟设定值显示}}/**/voidCancelCurSet(){staSystem=E_NORMAL;LcdCloseCursor();//关闭光标LcdClearScreen();//液晶清屏RefreshTime();//刷新当前时间RefreshDate(1);//立即刷新日期显示RefreshTemp(1);//立即刷新温度显示RefreshAlarm();//闹钟设定值显示}/*void{if(staSystem=={switch{case0:SetIndex=1;LcdSetCursor(1,1);case1:SetIndex=2;LcdSetCursor(3,1);case2:SetIndex=3;LcdSetCursor(4,1);case3:SetIndex=4;LcdSetCursor(6,1);case4:SetIndex=5;LcdSetCursor(7,1);case5:SetIndex=6;LcdSetCursor(9,1);break;case6:SetIndex=7;LcdSetCursor(11,1);break;case7:SetIndex=8;LcdSetCursor(12,1);break;case8:SetIndex=9;LcdSetCursor(14,1);break;case9:SetIndex=10;LcdSetCursor(15,1);break;default:SetIndex=0;LcdSetCursor(0,1);break;}}elseif(staSystem=={switch{case0:SetIndex=1;LcdSetCursor(1,1);break;case1:SetIndex=2;LcdSetCursor(3,1);break;case2:SetIndex=3;LcdSetCursor(4,1);break;default:SetIndex=0;LcdSetCursor(0,1);break;}}}/**/voidSetLeftShift(){if(staSystem=={switch{case0:SetIndex=10;LcdSetCursor(15,1);break;case1:SetIndex=0;LcdSetCursor(0,1);break;case2:SetIndex=1;LcdSetCursor(1,1);case3:SetIndex=2;LcdSetCursor(3,1);case4:SetIndex=3;LcdSetCursor(4,1);case5:SetIndex=4;LcdSetCursor(6,1);case6:SetIndex=5;LcdSetCursor(7,1);case7:SetIndex=6;LcdSetCursor(9,1);break;case8:SetIndex=7;LcdSetCursor(11,1);break;case9:SetIndex=8;LcdSetCursor(12,1);break;default:SetIndex=9;LcdSetCursor(14,1);break;}}elseif(staSystem=={switch{case0:SetIndex=3;LcdSetCursor(4,1);break;case1:SetIndex=0;LcdSetCursor(0,1);break;case2:SetIndex=1;LcdSetCursor(1,1);break;default:SetIndex=2;LcdSetCursor(3,1);break;}}}/*输入设置数字，修改对应的设置位，并显示该数字，ascii-输入数字的ASCII*/voidInputSetNumber(uint8ascii){uint8num=ascii-if(num<=9)//0～9{if(staSystem=={switch{case0:SetTime.year=LcdShowChar(0,1,ascii); //年份数case1:SetTime.year=LcdShowChar(1,1,ascii);break; case2:SetTime.mon=(SetTime.mon&0x0F)|(num<<4);LcdShowChar(3,1,ascii); //月份数case3:SetTime.mon=LcdShowChar(4,1,ascii);break; case4:SetTime.day=(SetTime.day&0x0F)|(num<<4);LcdShowChar(6,1,ascii); //日期数case5:SetTime.day=LcdShowChar(7,1,ascii);break; case6:SetTime.week=(SetTime.week&0xF0)|(num);LcdShowChar(9,1,ascii);break; case7:SetTime.hourLcdShowChar(11,1,ascii); //小时数case8:SetTime.hour=LcdShowChar(12,1,ascii);break; case9:SetTime.min=(SetTime.min&0x0F)|(num<<4);LcdShowChar(14,1,ascii); //分钟数default:SetTime.min=(SetTime.min&0xF0)|(num);LcdShowChar(15,1,ascii);break; }SetRightShift();//}elseif(staSystem=={switch{case0:SetAlarmHour=(SetAlarmHour&0x0F)|LcdShowChar(0,1,ascii); //小时数case1:SetAlarmHour=(SetAlarmHour&0xF0)|LcdShowChar(1,1,ascii);break; case2:SetAlarmMin=(SetAlarmMin&0x0F)|(num<<4);LcdShowChar(3,1,ascii); //分钟数default:SetAlarmMin=(SetAlarmMin&0xF0)|(num);LcdShowChar(4,1,ascii);break; }SetRightShift();//}}}#ifndef_MAIN_H#defineenumeStaSystem{//系统运行状态枚举E_NORMAL,E_SET_TIME,E_SET_ALARM#ifndefexternenumeStaSystemstaSystem;voidRefreshTemp(uint8ops);voidConfigTimer0(uint16/***********************main.c文件程序源代码#define_MAIN_C#include"config.h"#include"Lcd1602.h"#include"LedBuzzer.h"#include"keyboard.h"#include"DS1302.h"#include"DS18B20.h"#include"Infrared.h"#include"Time.h"#include"main.h"bitflag2s //2s定时标志bitflag200ms=0;//200ms定时标志uint8T0RH=0; uint8T0RL= //T0重载值的低字enumeStaSystemstaSystemE_NORMAL;//void{EA=1; ConfigTimer0(1);//配置T0定时1ms //初始化LED模块 InitInfrared();//初始化红外接收模块 //启动首次温度转换whileflag2s);//2flag2s= RefreshDate(1);//立即刷新日期显