免费资源 蓝桥杯比赛 历届省赛题目解答??第七届(省一代码加注释)

发布于:2021-10-26 03:50:19





蓝桥杯比赛 单片机组 第七届省赛题目解答(代码加注释)

一、题目二、hex文件三、主函数实现四、整个工程文件最后



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一、题目

? 历届的省赛和国赛的题目我已经在前面的文章(点击查看)里给大家分享了(网盘资源),需要的话,直接去下载,我在这里就不再赘述了。


二、hex文件

读者下载这个文件然后用烧录软件直接烧入单片机就可以用了!



链接:https://pan.baidu.com/s/1i1cHqNFWtSmhXAs-7cAbiw
提取码:dud6



三、主函数实现

? 提示:比赛过程中,仅仅主函数修改可能不够,有的时候需要注意,比赛官方给的各个驱动的代码是否写完整了,比如有时候,它的.h文件中就没有把这些写全,故意注释掉,你需要去对应的.c文件里找都需要一些什么函数,一个个都补全了才行。

? 另外,我的代码都是完全在一个文件中写完的,所以各位读者大大用起来就比较方便,可以直接拷贝我的.c文件也可以把内容复制粘贴走,放到你想要的地方去。
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上代码:


# include "reg52.h"
# include "onewire.h"

typedef unsigned char uchar;
typedef unsigned int uint;

sbit S7 = P3^0;
sbit S6 = P3^1;
sbit S5 = P3^2;
sbit S4 = P3^3;

uchar duanma[18] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x80,0xc6,0xc0,0x86,0x8e,0xbf,0x7f};
uint t_c = 0; //定时1s的计数变量
uchar pwm_c = 0; //脉宽调制的计数变量
uchar pwm_t = 2; //具体的脉宽调制的值,默认值为2
bit pwm_f = 1; //pwm输出的标志变量
uint temp = 0; //用来存放读取的温度
uchar mode = 1; //标志风扇工作模式,默认为睡眠风
uint rtime = 60; //剩余工作时间,默认工作时间1min
bit k7 = 0; //S7按键的标志位,默认为时间倒计时
uchar k6 = 1; //S6按键的标志位,默认为1

void BUZZEROutput ();

//========================锁存器的选择========================
void SelectHC573 (uchar n)
{
switch (n)
{
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;
}
}
//============================================================

//======================初始化函数============================
void InitSystem ()
{
SelectHC573(4);
P0 = 0xff;
SelectHC573(5);
P0 = 0x00;
SelectHC573(0);
}
//============================================================

//====================定时器T0 - 100us ========================
void InitTime0 ()
{
TMOD = 0x01;

TH0 = (65535 - 100) / 256;
TL0 = (65535 - 100) % 256;

TR0 = 1;
ET0 = 1;
EA = 1;
}

void ServiceTime0 () interrupt 1
{
TH0 = (65535 - 100) / 256;
TL0 = (65535 - 100) % 256;

if (rtime > 0)
{
t_c++;
if (t_c >= 10000)
{
rtime = rtime - 1;
t_c = 0;
}
}

pwm_c = pwm_c + 1;
if (pwm_c >= pwm_t)
{
pwm_f = 0;
}
if (pwm_c >= 10)
{
pwm_c = 0;
pwm_f = 1;
}
}
//============================================================

//======================温度的读取============================
void ReadTemp ()
{
uchar LSB;
uchar MSB;

init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0x44);
init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0xbe);

LSB = Read_DS18B20();
MSB = Read_DS18B20();

temp = (MSB << 8) | LSB;
if ((temp & 0xf800) == 0x0000)
{
temp = temp >> 4;
}
}
//============================================================

//==================数码管显示相关函数========================
void Delay_SMG (uint t)
{
while (t--);
}

void ShowSMG_Bit (uchar pos,uchar dat)
{
SelectHC573(7);
P0 = 0xff;
SelectHC573(6);
P0 = 0x01 << pos - 1;
SelectHC573(7);
P0 = dat;
SelectHC573(0);
}

void AllSMG (uchar dat)
{
SelectHC573(6);
P0 = 0xff;
SelectHC573(7);
P0 = dat;
SelectHC573(0);
}

void ShowSMG ()
{
if(k7 == 0)
{
ShowSMG_Bit(1,duanma[16]);
Delay_SMG (100);
ShowSMG_Bit(2,duanma[mode]);
Delay_SMG (100);
ShowSMG_Bit(3,duanma[16]);
Delay_SMG (100);
ShowSMG_Bit(5,duanma[rtime / 1000]);
Delay_SMG (100);
ShowSMG_Bit(6,duanma[(rtime / 100) % 10]);
Delay_SMG (100);
ShowSMG_Bit(7,duanma[(rtime / 10) % 10]);
Delay_SMG (100);
ShowSMG_Bit(8,duanma[rtime % 10]);
Delay_SMG (100);
}
else if (k7 == 1)
{
ShowSMG_Bit(1,duanma[16]);
Delay_SMG (100);
ShowSMG_Bit(2,duanma[4]);
Delay_SMG (100);
ShowSMG_Bit(3,duanma[16]);
Delay_SMG (100);
ShowSMG_Bit(6,duanma[(temp / 10) % 10]);
Delay_SMG (100);
ShowSMG_Bit(7,duanma[temp % 10]);
Delay_SMG (100);
ShowSMG_Bit(8,duanma[12]);
Delay_SMG (100);
}
AllSMG(0xff);
}
//============================================================

//=======================浏览按键=============================
void Delay_Key (uchar t)
{
while (t--);
}

void ScanKey ()
{
if (S7 == 0)
{
Delay_Key(100);
if (S7 == 0)
{
while (S7 == 0)
{
ShowSMG ();
if (rtime > 0)
{
BUZZEROutput ();
}
else if (rtime == 0)
{
SelectHC573(5);
P0 = 0x00;
}
}
if (k7 == 0)
{
k7 = 1;
}
else if (k7 == 1)
{
k7 = 0;
}
}
}
if (S6 == 0)
{
Delay_Key(100);
if (S6 == 0)
{
while (S6 == 0)
{
ShowSMG ();
if (rtime > 0)
{
BUZZEROutput ();
}
else if (rtime == 0)
{
SelectHC573(5);
P0 = 0x00;
}
}
rtime = 0;
}
}
if (S5 == 0)
{
Delay_Key(100);
if (S5 == 0)
{
while (S5 == 0)
{
ShowSMG ();
if (rtime > 0)
{
BUZZEROutput ();
}
else if (rtime == 0)
{
SelectHC573(5);
P0 = 0x00;
}
}
if(k6 == 1)
{
k6 = 2;
rtime = 120;
}
else if (k6 == 2)
{
k6 = 0;
rtime = 0;
}
else if (k6 == 0)
{
k6 = 1;
rtime = 60;
}
}
}
if (S4 == 0)
{
Delay_Key(100);
if (S4 == 0)
{
while (S4 == 0)
{
ShowSMG ();
if (rtime > 0)
{
BUZZEROutput ();
}
else if (rtime == 0)
{
SelectHC573(5);
P0 = 0x00;
}
}
if (mode == 1) //睡眠风
{
mode = 2;
pwm_t = 5;
}
else if (mode == 2) //自然风
{
mode = 3;
pwm_t = 10;
}
else if (mode == 3) //常风
{
mode = 1;
pwm_t = 2;
}
}
}
}
//============================================================

//====================PWM蜂鸣器输出===========================
void BUZZEROutput ()
{
SelectHC573(0);
if (pwm_f == 1)
{
P0 = 0x40;
}
else if (pwm_f == 0)
{
P0 = 0x00;
}
SelectHC573(5);
}
//============================================================

//=====================LED显示函数============================
void LEDRunning ()
{
SelectHC573(0);
if (rtime > 0)
{
if (mode == 1)
{
P0 = 0xfe;
}
else if (mode == 2)
{
P0 = 0xfd;
}
else if (mode == 3)
{
P0 = 0xfb;
}
}
else if(rtime == 0)
{
P0 = 0xff;
}
SelectHC573(4);
}
//============================================================

//========================主函数==============================
void main ()
{
InitSystem ();
InitTime0 ();
while (1)
{
ScanKey ();
if (k7 == 1)
{
ReadTemp ();
}
ShowSMG ();
if (rtime > 0)
{
BUZZEROutput ();
}
else if (rtime == 0)
{
SelectHC573(0);
P0 = 0x00;
SelectHC573(5);
}
LEDRunning ();
}
}
//============================================================

四、整个工程文件


链接:https://pan.baidu.com/s/1Qm3icNKZyWl21H2zoB4ZxA
提取码:80ci



?直接打开这项目如果失败的话,可能是因为keil使用版本问题,我用的是keil3,出现问题的话,可以直接拷贝.c文件的内容,前面我也说了,我的实现过程我在一个.c文件中实现的,方便读者大大取用!


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最后

有需要的小伙伴可以随时评论或者私信我,讨论学*过程中的问题,我会尽我所能提供一些帮助的


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蓝桥杯比赛 单片机组 历届省赛题目解答(代码加注释)剩余参见??https://blog.csdn.net/weixin_45386875/article/details/114136549


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