《单片机综合应用设计》

1、单片机综合应用设计报告题目：定时嗡鸣器班级:姓名: 学号: 年 月 日一、设计题目：定时嗡鸣器 二、功能简介：首先通过按键在显示器上输入定时器初始时间，最大可设置数值9999，最小为0000。在开始减为0000时，嗡鸣器想，led灯常亮。三、设计原理图：(注：原理图蜂鸣器未画出)四、设计PCB 图：五、程序设计：#include<STC12C5A60S2.H>#include<shiyan.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned intint a=0,b=0,

2、c=0,d=0,f=1,j=1,i=0;sbit SCL = P06;sbit SDA = P07;#define SCL_H SCL = 1#define SCL_L SCL = 0#define SDA_H SDA = 1#define SDA_L SDA = 0sbit P2_0=P20;sbit P2_1=P21;sbit P2_2=P22;sbit P2_3=P23;sbit P3_6=P36;sbit P2_4=P24;void TM1650_Set(uchar add,uchar dat);uchar CDDE12 = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,

3、0x7d,0x07,0x7f,0x6f,0x40,0x00;void Delay_us(int u)for( ;u>0;u-)_nop_();_nop_();_nop_(); _nop_();_nop_();void delayms(int v)/自定义延时 int w,x,y; for(w=v;w>0;w-) for(x=50;x>0;x-) for(y=95;y>0;y-);void shu_zi()if(f=1&&j=1)if(P2_3=0)delayms(10);if(P2_3=0)while(P2_3=0);a+;if(a>9)a=0;T

4、M1650_Set(0x68,CDDEa);if(f=1&&j=2)if(P2_3=0)delayms(10);if(P2_3=0)while(P2_3=0);b+;if(b>9)b=0;TM1650_Set(0x6A,CDDEb);if(f=1&&j=3)if(P2_3=0)delayms(10);if(P2_3=0)while(P2_3=0);c+;if(c>9)c=0;TM1650_Set(0x6C,CDDEc);if(f=1&&j=4)if(P2_3=0)delayms(10);if(P2_3=0)while(P2_3=0);

5、d+;if(d>9)d=0;TM1650_Set(0x6E,CDDEd);void wei_zhi()if(f=1&&P2_2=0)delayms(10);if(P2_2=0)while(P2_2=0);j+;if(j>5)j=1;void daoji_shi()if(P2_0=0)delayms(10);if(P2_0=0)while(P2_0=0);TR0=1;f=0;void main()/主程序serial_port_initial();TM1650_Set(0x48,0x51);TMOD=0x01;EA=1;ET0=1;TH0=(65536-500)/25

6、6;TL0=(65536-500)%256;TM1650_Set(0x68,CDDEa);TM1650_Set(0x6A,CDDEb);TM1650_Set(0x6C,CDDEc);TM1650_Set(0x6E,CDDEd);while(1)shu_zi();wei_zhi();daoji_shi();void t0(void) interrupt 1/计时中断i+;TH0=(65536-500)/256;TL0=(65536-500)%256;if(i=1)P3_6=P3_6;if(i=300)P3_6=P3_6;if(i=600)d-;i=0;if(d<0)c-;d=9;if(c&

7、lt;0)b-;c=9;if(b<0)a-;b=9;TM1650_Set(0x68,CDDEa);TM1650_Set(0x6A,CDDEb);TM1650_Set(0x6C,CDDEc);TM1650_Set(0x6E,CDDEd);if(a=0&&b=0&&c=0&&d=0)P2_4=0;TR0=0;void I2CStart(void)/开始信号SCL_H;SDA_H;Delay_us(5);SDA_L;void I2Cask(void) /ACK信号uchar timeout = 1;SCL_H;Delay_us(5);SCL_L;

8、void I2CStop(void) /停止信号SCL_H;SDA_L;Delay_us(5);SDA_H;void I2CWrByte(uchar oneByte) /写一个字节高位在前，低位在后uchar z;SCL_L;Delay_us(1);for(z=0;z<8;z+)oneByte = oneByte<<1;SDA = CY;SCL_L;Delay_us(5);SCL_H;Delay_us(5);SCL_L;void TM1650_Set(uchar add,uchar dat) /数码管显示/写显存必须从高地址开始写I2CStart();I2CWrByte(add); /第一个显存地址I2Cask();I2CW