【Proteus仿真】基于STC15单片机简易数码管定时器时钟
Proteus仿真仿真说明
在Proteus中虽然可以仿真STC单片机，但是运行速度实际上慢了10倍，原来定时器1ms，需要计数1000次才能到1秒，调整位100次，加速10倍。定时器重装载值问题，在Proteus仿真当中，不能实现自动重装载，所以在代码当中需要在定时器中断里面，补充初值。示例代码
/* 使用了宏晶科技的资料及程序 *//*************本程序功能说明**************【Proteus仿真】STC单片机IO方式控制74HC595驱动8位数码管显示简易数码管时钟显示效果为: 数码时钟.******************************************/#define MAIN_Fosc22118400L//定义主时钟#include"STC15Fxxxx.H"#defineTimer0_Reload(65536UL -(MAIN_Fosc / 1000))//Timer 0 中断频率, 1000次/秒#define DIS_DOT0x20#define DIS_BLACK0x10#define DIS_0x11u8 code t_display[]={//标准字库// 0 1 2 3 4 5 6 7 8 9 -0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x40};u8 code T_COM[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};//位码sbitP_HC595_SER = P4^0;//pin 14SERdata inputsbitP_HC595_RCLK = P5^4;//pin 12RCLkstore (latch) clocksbitP_HC595_SRCLK = P4^3;//pin 11SRCLKShift data clocku8 LED8[8];//显示缓冲u8display_index;//显示位索引bitB_1ms;//1ms标志u8cnt10ms;u8hour,minute,second;//RTC变量u16msecond;voidDisplayRTC(void);voidRTC(void);/**********************************************/void main(void){u8i;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display_index = 0;AUXR = 0x80;//Timer0 set as 1T, 16 bits timer auto-reload, TH0 = (u8)(Timer0_Reload / 256);TL0 = (u8)(Timer0_Reload % 256);ET0 = 1;//Timer0 interrupt enableTR0 = 1;//Tiner0 runEA = 1;//打开总中断for(i=0; i<8; i++)LED8[i] = 0x10;//上电消隐hour = 22;//初始化时间值minute = 10;second = 0;DisplayRTC();cnt10ms = 0;while(1){if(B_1ms)//1ms到{B_1ms = 0;if(++msecond >= 100)//1秒到,实际是1000，Proteus仿真速度太慢，加速10倍{msecond = 0;RTC();DisplayRTC();}//if(msecond == 50)DisplayRTC();//小时后的小数点做秒闪，实际是500，Proteus仿真速度太慢，加速10倍}}} /********************** 显示时钟函数 ************************/voidDisplayRTC(void){if(hour >= 10)LED8[0] = hour / 10;elseLED8[0] = DIS_BLACK;LED8[1] = hour % 10;LED8[2] = 10;//-LED8[3] = minute / 10;LED8[4] = minute % 10;LED8[5] =10;//-if(second >= 10)LED8[6] = second / 10;elseLED8[6] = 0;LED8[7] = second % 10;//if(msecond >= 500)LED8[7] |= DIS_DOT;//小数点做秒闪}/********************** RTC演示函数 ************************/voidRTC(void){if(++second >= 60){second = 0;if(++minute >= 60){minute = 0;if(++hour >= 24)hour = 0;}}}/**************** 向HC595发送一个字节函数 ******************/void Send_595(u8 dat){u8i;for(i=0; i<8; i++){dat <<= 1;P_HC595_SER = CY;P_HC595_SRCLK = 1;P_HC595_SRCLK = 0;}}/********************** 显示扫描函数 ************************/void DisplayScan(void){Send_595(~T_COM[display_index]);//输出位码Send_595(t_display[LED8[display_index]]);//输出段码P_HC595_RCLK = 1;P_HC595_RCLK = 0;//锁存输出数据if(++display_index >= 8)display_index = 0;//8位结束回0}/********************** Timer0 1ms中断函数 ************************/void timer0 (void) interrupt TIMER0_VECTOR{TR0 =0;TH0 = (u8)(Timer0_Reload / 256);//Proteus仿真，需要填写重装载值。TL0 = (u8)(Timer0_Reload % 256);DisplayScan();//1ms扫描显示一位B_1ms = 1;//1ms标志TR0 =1;}
程序源码和仿真资源
本示例基于
Proteus8.9
链接：/s/1JvlkbCkYTOCax5QCRslDbw 提取码：kkdi
