代码收藏家 【蓝桥杯单片机】第十三届省赛第一场题目和代码解答详解
若代码有误，欢迎在评论区批评改正
main.c
#include <REGX52.H>
#include <onewire.H>
#include <ds1302.H>
#include <intrins.H>
#define u8 unsigned char
#define u16 unsigned int
#define LED(X) { hc573(0); P0 = X; hc573(4) ; hc573(0);}
#define BUZ(X) { hc573(0); P0 = X; hc573(5) ; hc573(0);}
#define COM(X) { hc573(0); P0 = X; hc573(6) ; hc573(0);}
#define SMG(X) { hc573(0); P0 = X; hc573(7) ; hc573(0);}
sbit R1 = P3^4;
sbit R2 = P3^5;
sbit C1 = P3^2;
sbit C2 = P3^3;
code u8 Time_Write[] = {0x80,0x82,0x84},Time_Read[] ={0x81,0x83,0x85};
code u8 Seg_Table[] ={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xc1,0xbf};
u8 tab[8]={10},time[3]={0x50,0x59,0x23},keystatus,count_led,flag,flag_L1,flag_cont,flag_time,flag_buz,flag_key,keyvalue,dot,ui,flag_ui,flag_S13,flag_tab,cs=23,buz=0x00,led=0xff;
u16 temp,count_buz,count_L1,flag_led;
//============================函数声明区=========================
void hc573(u8 channel);
void Timer0_Init(void); //1毫秒@12.000MHz
void display();
void KeyScan();
void taskKey();
void Settab();
void Write_Time();
void Collect();
void Control();
void L3();
void Timer1_Init(void); //1毫秒@12.000MHz
//================================================================
void Delay700ms() //@12.000MHz
{
unsigned char i, j, k;
_nop_();
_nop_();
i = 32;
j = 236;
k = 16;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}
void hc573(u8 channel)
{
switch(channel)
{
case 4: P2 = (P2 & 0x1f) | 0x80; break;
case 5: P2 = (P2 & 0x1f) | 0xa0; break;
case 6: P2 = (P2 & 0x1f) | 0xc0; break;
case 7: P2 = (P2 & 0x1f) | 0xe0; break;
case 0: P2 = (P2 & 0x1f) | 0x00; break;
}
}
void Timer0_Isr(void) interrupt 1
{
display();
if(flag_key<20) flag_key++;
if(flag_tab<20) flag_tab++;
if(flag_ui<20) flag_ui++;
if(flag_time<200) flag_time++;
if(flag_cont<200) flag_cont++;
if(flag_led<100) flag_led++;
}
void display()
{
static u8 i;
SMG(0xff);
COM(0x01<<i);
if(dot != (i+1)) SMG(Seg_Table[tab[i]])
else SMG(Seg_Table[tab[i]] & 0x7f)
i = (i+1)%8;
}
void Timer0_Init(void) //1毫秒@12.000M
{
TMOD &= 0xF0; //设置定时器模式
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 = 0; //定时器0开始计时
ET0 = 1; //使能定时器0中断
EA = 1;
}
void KeyScan()
{
if(flag_key<20) return;
flag_key = 0;
switch(keystatus)
{
case 0:
R2 = 0;R1 = C1 = C2 = 1;
if(C1==0||C2==0) { keystatus=1; return;}
R1 = 0;R2 = C1 = C2 = 1;
if(C1==0||C2==0)
{
keystatus=2;
break;
}
break;
case 1:
if(C1 == 0) keyvalue = 13;
if(C2 == 0) keyvalue = 12;
keystatus = 3;
break;
case 2:
if(C1 == 0) keyvalue = 17;
if(C2 == 0) keyvalue = 16;
keystatus = 3;
break;
case 3: if(C1==1&&C2==1)
{
keystatus = 0;
flag=0;
}
break;
}
}
void taskKey()
{
switch(keyvalue)
{
case 12: ui = (ui+1)%3;keyvalue = 0;
break;
case 13: flag_S13 =(flag_S13+1)%2;keyvalue = 0;
break;
case 16:
if(ui==2&&cs<99)
cs++;
keyvalue = 0;
break;
case 17:
if(ui==2)
{
if(cs>10) cs--;
}
if(ui==1)
{
flag=1;
}
keyvalue = 0;
break;
default:keyvalue = 0;
break;
}
}
void Settab()
{
if(flag_tab<20) return;
flag_tab = 0;
if(flag==1)
{
dot=255;
tab[0] = 11;
tab[1] = 2;
tab[2] = 10;
tab[3] = time[1]/16;
tab[4] = time[1]%16;
tab[5] = 12;
tab[6] = time[0]/16;
tab[7] = time[0]%16;
return;
}
switch(ui)
{
case 0:
dot = 7;
tab[0] = 11;
tab[1] = 1;
tab[2] = 10;
tab[3] = 10;
tab[4] = 10;
tab[5] = temp/100;
tab[6] = temp%100/10;
tab[7] = temp%10;
break;
case 1:
dot=255;
tab[0] = 11;
tab[1] = 2;
tab[3] = time[2]/16;
tab[4] = time[2]%16;
tab[2] = 10;
tab[5] = 12;
tab[6] = time[1]/16;
tab[7] = time[1]%16;
break;
case 2:
tab[0] = 11;
tab[1] = 3;
tab[2] = 10;
tab[3] = 10;
tab[4] = 10;
tab[5] = 10;
tab[6] = cs/10;
tab[7] = cs%10;
break;
}
}
void Write_Time()
{
u8 i;
Write_Ds1302_Byte(0x8e,0x00);
for(i=0;i<=2;i++)
{
Write_Ds1302_Byte(Time_Write[i],time[i]);
}
Write_Ds1302_Byte(0x8e,0x80);
}
void Collect()
{
u8 i;
if(flag_time<200) return;
flag_time = 0;
for(i=0;i<=2;i++)
{
time[i]=Read_Ds1302_Byte(Time_Read[i]);
}
temp = Gettemp();
}
void Control()
{
if(flag_cont<20) return;
flag_cont = 0;
if(flag_S13 == 0) //温度控制
{
if(temp/10>=cs) buz|= 0x10;
else buz &=~0x10;
led&=~0x02;
}
if(flag_S13 == 1) //时间控制
{
led|=0x02;
if(time[1]==0x00&&time[0]==0x00) flag_buz = 1;
if(flag_buz == 1&&count_buz < 5000)
{
buz|= 0x10;
ET1 = 1;
}
else
{
flag_buz=0;
count_buz=0;
buz &=~0x10;
ET1 = 0;
}
}
if(time[1]==0x00&&time[0]==0x00) flag_L1 = 1;
if(flag_L1 == 1&&count_L1 < 5000)
{
led&=~0x01;
ET1 = 1;
}
else
{
flag_L1=0;
count_L1=0;
led|=0x01;
ET1 = 0;
}
BUZ(buz);
LED(led);
}
void L3()
{
if(flag_led<100) return;
flag_led = 0;
if(buz == 0x10)
{
led ^= 0x04;
}
else led|=0x04;
LED(led);
}
void Timer1_Isr(void) interrupt 3
{
if(count_buz<5000) count_buz++;
if(count_L1<5000) count_L1++;
}
void Timer1_Init(void) //1毫秒@12.000MHz
{
TMOD &= 0x0F; //设置定时器模式
TL1 = 0x18; //设置定时初始值
TH1 = 0xFC; //设置定时初始值
TF1 = 0; //清除TF1标志
TR1 = 1; //定时器1开始计时
ET1 = 1; //使能定时器1中断
}
void main()
{
Gettemp();
BUZ(0x00);
LED(0xff);
Delay700ms();
Timer0_Init();
Write_Time();
temp=Gettemp();
Settab();
Timer1_Init();
TR0 = 1;
while(1)
{
Settab();
Collect();
taskKey();
KeyScan();
Control();
L3();
}
}ds1302.c
/* # DS1302代码片段说明
1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。
2. 参赛选手可以自行编写相关代码或以该代码为基础，根据所选单片机类型、运行速度和试题
中对单片机时钟频率的要求，进行代码调试和修改。
*/
#include <STC15F2K60S2.H>
#include <REGX52.H>
#include <intrins.H>
sbit RST = P1^3;
sbit SCK = P1^7;
sbit SDA = P2^3;
//
void Write_Ds1302(unsigned char temp)
{
unsigned char i;
for (i=0;i<8;i++)
{
SCK = 0;
SDA = temp&0x01;
temp>>=1;
SCK=1;
}
}
//
void Write_Ds1302_Byte( unsigned char address,unsigned char dat )
{
RST=0; _nop_();
SCK=0; _nop_();
RST=1; _nop_();
Write_Ds1302(address);
Write_Ds1302(dat);
RST=0;
}
//
unsigned char Read_Ds1302_Byte ( unsigned char address )
{
unsigned char i,temp=0x00;
RST=0; _nop_();
SCK=0; _nop_();
RST=1; _nop_();
Write_Ds1302(address);
for (i=0;i<8;i++)
{
SCK=0;
temp>>=1;
if(SDA)
temp|=0x80;
SCK=1;
}
RST=0; _nop_();
SCK=0; _nop_();
SCK=1; _nop_();
SDA=0; _nop_();
SDA=1; _nop_();
return (temp);
}
ds1302.h
#ifndef __ds1302_H__
#define __ds1302_H__
void Write_Ds1302_Byte( unsigned char address,unsigned char dat );
unsigned char Read_Ds1302_Byte ( unsigned char address );
#endifonewire.c
/* # 单总线代码片段说明
1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。
2. 参赛选手可以自行编写相关代码或以该代码为基础，根据所选单片机类型、运行速度和试题
中对单片机时钟频率的要求，进行代码调试和修改。
*/
#include <STC15F2K60S2.H>
#include <REGX52.H>
sbit DQ = P1^4;
//
void Delay_OneWire(unsigned int t)
{
unsigned char i;
while(t--){
for(i=0;i<12;i++);
}
}
//
void Write_DS18B20(unsigned char dat)
{
unsigned char i;
for(i=0;i<8;i++)
{
DQ = 0;
DQ = dat&0x01;
Delay_OneWire(5);
DQ = 1;
dat >>= 1;
}
Delay_OneWire(5);
}
//
unsigned char Read_DS18B20(void)
{
unsigned char i;
unsigned char dat;
for(i=0;i<8;i++)
{
DQ = 0;
dat >>= 1;
DQ = 1;
if(DQ)
{
dat |= 0x80;
}
Delay_OneWire(5);
}
return dat;
}
//
bit init_ds18b20(void)
{
bit initflag = 0;
DQ = 1;
Delay_OneWire(12);
DQ = 0;
Delay_OneWire(80);
DQ = 1;
Delay_OneWire(10);
initflag = DQ;
Delay_OneWire(5);
return initflag;
}
unsigned int Gettemp()
{
unsigned char MSB,LSB;
unsigned int temp;
init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0x44);
Delay_OneWire(500);
init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0xbe);
LSB = Read_DS18B20();
MSB = Read_DS18B20();
temp = (MSB<<8)|LSB;
temp = temp * 0.0625 * 10;
return temp;
}onewire.h
#ifndef __onewire_H__
#define __onewire_H__
unsigned int Gettemp();
#endif作者：own0913
