【Proteus仿真】STC15单片机 + DS1302 + LCD1602显示时间

Proteus仿真

本来想通过轮询方式读取DS1302秒时间的变化来刷新LCD1602显示的，但是这种方式在STC15上仿真会出现DS1302不走秒的情况，读DS1302时并没有开启保护。只能通过在主循环while里面添加一个1秒钟强制读取一次。好处是可以不用占用太多的cpu时间。

主程序代码

/*************本程序功能说明**************驱动LCD1602字符屏.显示效果为: DS1302 + LCD1602显示时间******************************************/#include"STC15Fxxxx.H"#include "DS1302.h"#define T1MS (65536-MAIN_Fosc/12/1000) //12T模式1ms定时#define interval 1000 //设置延时时间间隔/*************本地变量声明**************/static volatile unsigned long sysRunmillis = 0;//系统运行时间计数，保存单片机从上电复位以来运行的时间，单位是毫秒。该数值由定时器T0的中断响应子函数更新unsigned long previousMillis = 0;unsigned char KEY_NUM = 0;bit Flag_KEY_Set = 0;unsigned char KEY2_Count = 0;sbit Buzzer = P3^7;void Timer0Init(void);//1毫秒@12.000MHzvoidDisplayRTC(void);void delay_ms(unsigned long ms);voidInitialize_LCD(void);voidWrite_AC(u8 hang,u8 lie);voidWrite_DIS_Data(u8 DIS_Data);voidClearLine(u8 row);u8BIN_ASCII(u8 tmp);void PutString(u8 row, u8 column, u8 *puts);voidWriteChar(u8 row, u8 column, u8 dat);void Buzzer_Di(void);//========================================================================// 函数: void main(void)// 描述: 主函数。// 参数: none.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void main(void){unsigned long currentMillis;//当前时间P0M1 = 0;P0M0 = 0;//设置为准双向口P1M1 = 0;P1M0 = 0;//设置为准双向口P2M1 = 0;P2M0 = 0;//设置为准双向口P3M1 = 0;P3M0 = 0;//设置为准双向口P4M1 = 0;P4M0 = 0;//设置为准双向口P5M1 = 0;P5M0 = 0;//设置为准双向口P6M1 = 0;P6M0 = 0;//设置为准双向口P7M1 = 0;P7M0 = 0;//设置为准双向口Timer0Init();//1毫秒@12.000MHzInitialize_LCD();ClearLine(0);ClearLine(1);DS1302_Init();//初始化DS1302delay_ms(500);DS1302_GetTime(&DS1302Buffer);//获取当前RTCC值while(1){DisplayRTC();//显示实时时钟currentMillis = sysRunmillis;if (currentMillis - previousMillis >= interval){//每隔1秒翻转一次previousMillis = sysRunmillis;DS1302_GetTime(&DS1302Buffer);//获取当前RTCC值}//if(Flag_Time_Refresh)//数据更新时才刷新LCD//{//Flag_Time_Refresh = 0;//DisplayRTC();//显示实时时钟//}//DS1302_GetTime(&DS1302Buffer);//获取当前RTCC值}} void Timer0Init(void)//1毫秒@12.000MHz{AUXR &= 0x7F;//定时器时钟12T模式TMOD &= 0xF0;//设置定时器模式TL0 = T1MS ;//设置定时初始值TH0 = T1MS >>8;//设置定时初始值//TL0 = 0x18;//设置定时初始值//TH0 = 0xFC;//设置定时初始值TF0 = 0;//清除TF0标志TR0 = 1;//定时器0开始计时ET0 = 1;//enable timer0 interruptEA = 1;//open global interrupt switch}/* Timer0 interrupt routine */void tm0_isr() interrupt 1{//TL0 = 0x18;//设置定时初始值//TH0 = 0xFC;//设置定时初始值TL0 = T1MS; //reload timer0 low byteTH0 = T1MS >> 8;//reload timer0 high bytesysRunmillis ++;}//========================================================================// 函数: void delay_ms(u8 ms)// 描述: 延时函数。// 参数: ms,要延时的ms数, 这里只支持1~255ms. 自动适应主时钟.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void delay_ms(unsigned long ms){unsigned longtemp = sysRunmillis ;while(sysRunmillis - temp < ms );//unsigned int i;// do{//i = MAIN_Fosc / 13000;// while(--i); //14T per loop//}while(--ms);}//****************************************************//显示实时时钟//****************************************************voidDisplayRTC(void){unsigned char *weeklist[7]={"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};PutString(0,0,"20");WriteChar(0,2,DS1302Buffer.Year/10 + 0x30); //显示Year高位WriteChar(0,3,DS1302Buffer.Year%10 + 0x30); //显示Year低位WriteChar(0,4,'-');WriteChar(0,5,DS1302Buffer.Month/10 + 0x30); //显示Month高位WriteChar(0,6,DS1302Buffer.Month%10 + 0x30); //显示Month低位WriteChar(0,7,'-');WriteChar(0,8,DS1302Buffer.Day/10 + 0x30); //显示Day高位WriteChar(0,9,DS1302Buffer.Day%10 + 0x30); //显示Day低位PutString(0,13,weeklist[DS1302Buffer.Week -1]);if(DS1302Buffer.Hour > 9)WriteChar(1,0,DS1302Buffer.Hour/10 + 0x30); //显示Hour高位elseWriteChar(1,0, 0x30);WriteChar(1,1,DS1302Buffer.Hour%10 + 0x30); //显示Hour低位WriteChar(1,2,':');WriteChar(1,3,DS1302Buffer.Minute/10 + 0x30); //显示Minute高位WriteChar(1,4,DS1302Buffer.Minute%10 + 0x30); //显示Minute低位WriteChar(1,5,':');WriteChar(1,6,DS1302Buffer.Second/10 + 0x30); //显示Second高位WriteChar(1,7,DS1302Buffer.Second%10 + 0x30); //显示Second低位}/************* LCD1602相关程序*****************************************************///8位数据访问方式LCD1602标准程序梁工编写-2-21#define LineLength16//16x2/*************Pin define*****************************************************/sfrLCD_BUS = 0x80;//P0--0x80, P1--0x90, P2--0xA0, P3--0xB0sbitLCD_B7 = LCD_BUS^7;//D7 -- Pin 14LED- -- Pin 16 sbitLCD_B6 = LCD_BUS^6;//D6 -- Pin 13LED+ -- Pin 15sbitLCD_B5 = LCD_BUS^5;//D5 -- Pin 12Vo -- Pin 3sbitLCD_B4 = LCD_BUS^4;//D4 -- Pin 11VDD -- Pin 2sbitLCD_B3 = LCD_BUS^3;//D3 -- Pin 10VSS -- Pin 1sbitLCD_B2 = LCD_BUS^2;//D2 -- Pin 9sbitLCD_B1 = LCD_BUS^1;//D1 -- Pin 8sbitLCD_B0 = LCD_BUS^0;//D0 -- Pin 7sbitLCD_ENA= P2^2;//Pin 6sbitLCD_RW= P2^1;//Pin 5//LCD_RS R/W DB7--DB0 FOUNCTIONsbitLCD_RS= P2^0;//Pin 4//00 INPUTwrite the command to LCD model//01OUTPUTread BF and AC pointer from LCD model//10INPUTwrite the data to LCD model//11OUTPUTread the data from LCD model/*total 2 lines, 16x2= 32first line address: 0~15second line address: 64~79*/#define C_CLEAR0x01//clear LCD#define C_HOME 0x02//cursor go home#define C_CUR_L0x04//cursor shift left after input#define C_RIGHT0x05//picture shift right after input#define C_CUR_R0x06//cursor shift right after input#define C_LEFT 0x07//picture shift left after input#define C_OFF 0x08//turn off LCD#define C_ON 0x0C//turn on LCD#define C_FLASH0x0D//turn on LCD, flash #define C_CURSOR0x0E//turn on LCD and cursor#define C_FLASH_ALL0x0F//turn on LCD and cursor, flash#define C_CURSOR_LEFT0x10//single cursor shift left#define C_CURSOR_RIGHT0x10//single cursor shift right#define C_PICTURE_LEFT0x10//single picture shift left#define C_PICTURE_RIGHT0x10//single picture shift right#define C_BIT80x30//set the data is 8 bits#define C_BIT40x20//set the data is 4 bits#define C_L1DOT70x30//8 bits,one line 5*7 dots#define C_L1DOT100x34//8 bits,one line 5*10 dots#define C_L2DOT70x38//8 bits,tow lines 5*7 dots#define C_4bitL2DOT70x28//4 bits,tow lines 5*7 dots#define C_CGADDRESS00x40//CGRAM address0 (addr=40H+x)#define C_DDADDRESS00x80//DDRAM address0 (addr=80H+x)#defineLCD_DelayNop()NOP(15)#defineLCD_BusData(dat)LCD_BUS = dat//========================================================================// 函数: voidCheckBusy(void)// 描述: 检测忙函数// 参数: none.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================voidCheckBusy(void){u16i;for(i=0; i<5000; i++){if(!LCD_B7)break;}//check the LCD busy or not. With time out//while(LCD_B7);//check the LCD busy or not. Without time out}//========================================================================// 函数: void IniSendCMD(u8 cmd)// 描述: 初始化写命令(不检测忙)// 参数: cmd: 要写的命令.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void IniSendCMD(u8 cmd){LCD_RW = 0;LCD_BusData(cmd);LCD_DelayNop();LCD_ENA = 1;LCD_DelayNop();LCD_ENA = 0;LCD_BusData(0xff);}//========================================================================// 函数: void Write_CMD(u8 cmd)// 描述: 写命令(检测忙)// 参数: cmd: 要写的命令.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void Write_CMD(u8 cmd){LCD_RS = 0;LCD_RW = 1;LCD_BusData(0xff);LCD_DelayNop();LCD_ENA = 1;CheckBusy();//check the LCD busy or not.LCD_ENA = 0;LCD_RW = 0;LCD_BusData(cmd);LCD_DelayNop();LCD_ENA = 1;LCD_DelayNop();LCD_ENA = 0;LCD_BusData(0xff);}//========================================================================// 函数: void Write_DIS_Data(u8 dat)// 描述: 写显示数据(检测忙)// 参数: dat: 要写的数据.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void Write_DIS_Data(u8 dat){LCD_RS = 0;LCD_RW = 1;LCD_BusData(0xff);LCD_DelayNop();LCD_ENA = 1;CheckBusy();//check the LCD busy or not.LCD_ENA = 0;LCD_RW = 0;LCD_RS = 1;LCD_BusData(dat);LCD_DelayNop();LCD_ENA = 1;LCD_DelayNop();LCD_ENA = 0;LCD_BusData(0xff);}//========================================================================// 函数: void Initialize_LCD(void)// 描述: 初始化函数// 参数: none.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void Initialize_LCD(void){LCD_ENA = 0;LCD_RS = 0;LCD_RW = 0;delay_ms(100);IniSendCMD(C_BIT8);//set the data is 8 bitsdelay_ms(10);Write_CMD(C_L2DOT7);//tow lines 5*7 dotsdelay_ms(6);Write_CMD(C_CLEAR);//clear LCD RAMWrite_CMD(C_CUR_R);//Curror Shift RightWrite_CMD(C_ON);//turn on LCD}//========================================================================// 函数: void ClearLine(u8 row)// 描述: 清除1行// 参数: row: 行(0或1)// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void ClearLine(u8 row){u8 i;Write_CMD(((row & 1) << 6) | 0x80);for(i=0; i<LineLength; i++)Write_DIS_Data(' ');}//========================================================================// 函数: voidWriteChar(u8 row, u8 column, u8 dat)// 描述: 指定行、列和字符, 写一个字符// 参数: row: 行(0或1), column: 第几个字符(0~15), dat: 要写的字符.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================voidWriteChar(u8 row, u8 column, u8 dat){Write_CMD((((row & 1) << 6) + column) | 0x80);Write_DIS_Data(dat);}//========================================================================// 函数: void PutString(u8 row, u8 column, u8 *puts)// 描述: 写一个字符串，指定行、列和字符串首地址// 参数: row: 行(0或1), column: 第几个字符(0~15), puts: 要写的字符串指针.// 返回: none.// 版本: VER1.0// 日期: -4-1// 备注: //========================================================================void PutString(u8 row, u8 column, u8 *puts){Write_CMD((((row & 1) << 6) + column) | 0x80);for ( ; *puts != 0; puts++)//遇到停止符0结束{Write_DIS_Data(*puts);if(++column >= LineLength)break;}}//******************** LCD20 Module END ***************************//****************************************************//蜂鸣器程序//****************************************************void Buzzer_Di(void){Buzzer = 0;delay_ms(3);Buzzer = 1;delay_ms(3);}