蓝桥杯单片机第七届真题电风扇控制含源码,原理图全套软件硬件资料 -

#include "stc15f2k60s2.h"
#include "onewire.h"
sbit buzzer=P0^6;
unsigned char smg_d[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};//0-9
unsigned char smg_w[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
unsigned char menu_index=1;//界面切换索引
unsigned char menu1[8];//界面1显示
unsigned char mode=1; //三种模式，睡眠风，1，自然风,2，常风，3
unsigned char remain_time=0; //倒计时显示时间
unsigned char menu2[8];//界面2 显示，按下S7后出现
unsigned char temp;//界面2显示温度
//sbit pwm_output = P3^4 ; //pwm输出
bit key_flag=0;//按键按下的标志位
//矩阵键盘
#define KEYPORT P3
#define key_state_0 0
#define key_state_1 1
#define key_state_2 2
char key_read()
{
static char key_state=0;
unsigned char k1,k2,key_press;
unsigned char key_return=0;
KEYPORT=0xf0;
k1=KEYPORT&0xf0;
KEYPORT=0x0f;
k2=KEYPORT&0x0f;
P44=1;P42=1;P35=1;P34=1;P33=0;P32=0;P31=0;P30=0;
if(P44==0) k1=0x70;
if(P42==0) k1=0xb0;
if(P35==0) k1=0xd0;
if(P34==0) k1=0xe0;
if((P44==1)&(P42==1)&(P35==1)&(P34==1)) k1 = 0xf0;
P44=0;P42=0;P35=0;P34=0;P33=1;P32=1;P31=1;P30=1;
if(P33==0) k2=0x07;
if(P32==0) k2=0x0b;
if(P31==0) k2=0x0d;
if(P30==0) k2=0x0e;
if((P33==1)&(P32==1)&(P31==1)&(P30==1)) k2 = 0x0f;
key_press=k1|k2;
switch(key_state)
{
case key_state_0:
if(key_press!=0xff) key_state=key_state_1;
break;
case key_state_1:
if(key_press!=0xff)
{
if(key_press==0xee) key_return=19;
if(key_press==0xed) key_return=18;
if(key_press==0xeb) key_return=17;
if(key_press==0xe7) key_return=16;
if(key_press==0xde) key_return=15;
if(key_press==0xdd) key_return=14;
if(key_press==0xdb) key_return=13;
if(key_press==0xd7) key_return=12;
if(key_press==0xbe) key_return=11;
if(key_press==0xbd) key_return=10;
if(key_press==0xbb) key_return=9;
if(key_press==0xb7) key_return=8;
if(key_press==0x7e) key_return=7;
if(key_press==0x7d) key_return=6;
if(key_press==0x7b) key_return=5;
if(key_press==0x77) key_return=4;
key_state=key_state_2;
}
else
key_state=key_state_0;
break;
case key_state_2:
if(key_press==0xff)key_state=key_state_0;
break;
}
return key_return;
}
void Timer0Init(void) //100微秒 @11.0592MHz
{
AUXR |= 0x80; //定时器时钟1T模式
TMOD &= 0xF0; //设置定时器模式
TL0 = 0xAE; //设置定时初值
TH0 = 0xFB; //设置定时初值
TF0 = 0; //清除TF0标志
TR0 = 1; //定时器0开始计 ?
ET0 = 1;
EA=1;
}
main()
{
unsigned char key_val;
P2=0XA0;buzzer=0;P2=0X00;
Timer0Init();
while(1)
{
if(menu_index==2)
{
temp=read_temperature();
}
menu1[0]=0x40;menu1[1]=smg_d[mode];
menu1[2]=0x40;menu1[3]=0x00;
menu1[4]=smg_d[remain_time/1000];menu1[5]=smg_d[remain_time/100%10];
menu1[6]=smg_d[remain_time%100/10];menu1[7]=smg_d[remain_time%10];
menu2[0]=0x40;menu2[1]=0x66;menu2[2]=0x40;
menu2[3]=0x00;menu2[4]=0x00;
menu2[5]=smg_d[temp/10];menu2[6]=smg_d[temp%10];
menu2[7]=0x39;
if(key_flag)
{
key_flag=0;
key_val=key_read();
switch(key_val)
{
case 4 : if(menu_index==1)
{
mode++;
if(mode==4)
mode=1;
}break;
case 5 : if(menu_index==1)
{
if(remain_time<60)
remain_time+=60;
else remain_time=0;
}break;
case 6 : if(menu_index==1)
{
remain_time=0;
}break;
case 7 : if(menu_index==1)
{
menu_index=2;
}
else
menu_index=1;
break;
}
}
}
}
void tm0_isr() interrupt 1
{
static char i;
static unsigned int sec_count=0,key_count=0,smg_count=0,pwm_count=0;
sec_count++;key_count++;smg_count++;pwm_count++;
if(remain_time>0)
{
if(mode==1) //模式1：睡眠风状态下的PWM，20%占空比
{
P2=0X80;P0=0XFE;P2=0X00;
if(pwm_count==8) //1ms输出一次PWM
{
P34=1;
}
if(pwm_count==10)
{
P34=0;
pwm_count=0;
}
}
if(mode==2) //模式2：自然风状态下的PWM，30%占空比
{
P2=0X80;P0=0XFD;P2=0X00;
if(pwm_count==7) //1ms输出一次PWM
{
P34=1;
}
if(pwm_count==10)
{
P34=0;
pwm_count=0;
}
}
if(mode==3) //模式3：常风状态下的PWM，70%占空比
{
P2=0X80;P0=0XFB;P2=0X00;
if(pwm_count==3) //1ms输出一次PWM
{
P34=1;
}
if(pwm_count==10)
{
P34=0;
pwm_count=0;
}
}
}
else
{
P34=0;
pwm_count=0;
P2=0X80;P0=0XFF;P2=0X00;
}
if(smg_count==30) //3ms扫描显示一次数码管
{
smg_count=0;
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