蓝桥杯单片机第13届模拟1

题目

 

 

这道题也是十分简单，我们把大模板敲好，写入ds18b20和ds1302底层，再来读题目。

题目很短 

 按键功能

题目要求的是独立按键，从s4到s7，s4是常规的界面切换功能，s5s6s7都是在时钟界面有效，对时间数据的修改，对于时间数据的修改，我们需要注意，ds1302存储的数据是bcd码16进制的。我们在判断取值范围的时候，得对bcd码进行特殊判断

比如说时钟，0~9正常加一，9~10的时候，bcd码是a,我们就得把这部分特殊判断，让bcd码的高四位加一，低四位清零，得到10。修改完时间数组后，我们记得要把修改完的值写入ds1302里面。

/*按键函数区域*/
void Key_Proc(){
	unsigned char t1;
	if(Key_Slow) return;
	else Key_Slow = 1;
	
	Key_Val = Key_Read();
	Key_Down = Key_Val & (Key_Val ^ Key_Old);
	Key_Up = ~Key_Val & (Key_Val ^ Key_Old);
	Key_Old = Key_Val;
	
	if(Key_Down == 4) Seg_Mode ^= 1;
	
	if(Seg_Mode == 0){//时间界面
		if(Key_Down == 5){//时钟加一
			t1 = Time[0]/16;
			if(Time[0]%16 == 9){//逢九进一
				t1++;
				Time[0] = t1*16;
			}
			else if(Time[0] == 0x23) Time[0] = 0x00;
			else Time[0]++;
			Time_Write(Time);
		}
		if(Key_Down == 6){//分钟加一
			t1 = Time[1]/16;
			if(Time[1]%16 == 9){
				t1++;
				if(t1==0x06)	t1 = 0x00;
				Time[1] = t1*16;
			}
			else Time[1]++;
			Time_Write(Time);
		}
		if(Key_Down == 7){//秒钟清零
			Time[2] = 0;
			Time_Write(Time);
		}
	}
	
}

显示功能 

 

这套题就两个界面，都是很基础的显示功能，也就不再赘述了

switch(Seg_Mode){
		case 0://时间界面
			Point[6] = 0;
			Seg_Buf[0] = Time[0]/16;
			Seg_Buf[1] = Time[0]%16;
			Seg_Buf[2] = 11;//-
			Seg_Buf[3] = Time[1]/16;
			Seg_Buf[4] = Time[1]%16;
			Seg_Buf[5] = 11;//-
			Seg_Buf[6] = Time[2]/16;
			Seg_Buf[7] = Time[2]%16;
		break;
		case 1://温度界面
			Seg_Buf[0] = 12;//C
			Seg_Buf[1] = 10;
			Seg_Buf[2] = 10;
			Seg_Buf[3] = 10;
			Seg_Buf[4] = 10;
			Seg_Buf[5] = (unsigned char)tempature/10;
			Point[6] = 1;
			Seg_Buf[6] = (unsigned char)tempature%10;
			Seg_Buf[7] = (unsigned int)(tempature*10)%10;
		break;
	}

 报警功能

整点继电器吸合报警，我们在读取时间之后对时间进行判断即可，定义一个3s计时标志位来判断，也可以用ds1302的数据来判断，但我本人更倾向于定义一个标志位来判断，不容易出错。

Time_Read(Time);
	
	if(Time[1] == 0x00 && Time[2] == 0x00){
		Relay_flash = 1;
	}



//定时器0中断服务函数里面
if(Relay_flash){
		if(++Time_3s == 3000){
			Relay_flash = 0;
			Time_3s = 0;
		}
	}
	else Time_3s = 0;

 指示灯功能

 两个Led灯和显示界面有关，很简单，不多说

/*Led函数区域*/
void Led_Proc(){
	Led_Buf[0] = (Seg_Mode==0);
	Led_Buf[1] = (Seg_Mode==1);
	
	Relay(Relay_flash);//继电器
}

 完整主函数

/*头文件区域*/
#include <STC15F2K60S2.H>
#include <Key.h>
#include <Seg.h>
#include <Init.h>
#include <Led.h>
#include <onewire.h>
#include <ds1302.h>
#include <intrins.h>
/*参数变量区域*/
unsigned char Key_Slow,Seg_Slow;
unsigned char Seg_Pos;
unsigned char Key_Down,Key_Up,Key_Old,Key_Val;
//数组
unsigned char Seg_Buf[] = {10,10,10,10,10,10,10,10};
unsigned char Led_Buf[] = {0,0,0,0,0,0,0,0};
unsigned char Point[] = {0,0,0,0,0,0,0,0};
unsigned char Time[3] = {0x00,0x59,0x50};
//标志位
bit Relay_flash;
unsigned int Time_3s;
unsigned char Seg_Mode;//0时间界面，1温度界面
unsigned char hour;//时钟
unsigned char minite;//分钟
float tempature;
/*按键函数区域*/
void Key_Proc(){
	unsigned char t1;
	if(Key_Slow) return;
	else Key_Slow = 1;
	
	Key_Val = Key_Read();
	Key_Down = Key_Val & (Key_Val ^ Key_Old);
	Key_Up = ~Key_Val & (Key_Val ^ Key_Old);
	Key_Old = Key_Val;
	
	if(Key_Down == 4) Seg_Mode ^= 1;
	
	if(Seg_Mode == 0){//时间界面
		if(Key_Down == 5){
			t1 = Time[0]/16;
			if(Time[0]%16 == 9){//逢九进一
				t1++;
				Time[0] = t1*16;
			}
			else if(Time[0] == 0x23) Time[0] = 0x00;
			else Time[0]++;
			Time_Write(Time);
		}
		if(Key_Down == 6){
			t1 = Time[1]/16;
			if(Time[1]%16 == 9){
				t1++;
				if(t1==0x06)	t1 = 0x00;
				Time[1] = t1*16;
			}
			else Time[1]++;
			Time_Write(Time);
		}
		if(Key_Down == 7){
			Time[2] = 0;
			Time_Write(Time);
		}
	}
	
}
/*数码管函数区域*/
void Seg_Proc(){
	if(Seg_Slow ) return;
		Seg_Slow = 1;

	tempature = re_tempature();
	
	Time_Read(Time);
	
	if(Time[1] == 0x00 && Time[2] == 0x00){
		Relay_flash = 1;
	}

	
	switch(Seg_Mode){
		case 0://时间界面
			Point[6] = 0;
			Seg_Buf[0] = Time[0]/16;
			Seg_Buf[1] = Time[0]%16;
			Seg_Buf[2] = 11;//-
			Seg_Buf[3] = Time[1]/16;
			Seg_Buf[4] = Time[1]%16;
			Seg_Buf[5] = 11;//-
			Seg_Buf[6] = Time[2]/16;
			Seg_Buf[7] = Time[2]%16;
		break;
		case 1://温度界面
			Seg_Buf[0] = 12;//C
			Seg_Buf[1] = 10;
			Seg_Buf[2] = 10;
			Seg_Buf[3] = 10;
			Seg_Buf[4] = 10;
			Seg_Buf[5] = (unsigned char)tempature/10;
			Point[6] = 1;
			Seg_Buf[6] = (unsigned char)tempature%10;
			Seg_Buf[7] = (unsigned int)(tempature*10)%10;
		break;
	}
}

/*Led函数区域*/
void Led_Proc(){
	Led_Buf[0] = (Seg_Mode==0);
	Led_Buf[1] = (Seg_Mode==1);
	
	Relay(Relay_flash);//继电器
}
/*定时器0初始化函数区域*/
void Timer0_Init(void)		//1毫秒@12.000MHz
{
	AUXR |= 0x80;			//定时器时钟1T模式
	TMOD &= 0xF0;			//设置定时器模式
	TL0 = 0x20;				//设置定时初始值
	TH0 = 0xD1;				//设置定时初始值
	TF0 = 0;				//清除TF0标志
	TR0 = 1;				//定时器0开始计时
	ET0 = 1;
	EA = 1;
}
/*定时器0中断服务函数区域*/
void Timer0_Service() interrupt 1
{
	if(++Seg_Slow == 200) Seg_Slow = 0;
	if(++Key_Slow == 50) Key_Slow = 0;
	
	if(++Seg_Pos == 8) Seg_Pos = 0;
	Seg_Disp(Seg_Pos,Seg_Buf[Seg_Pos],Point[Seg_Pos]);
	Led_Disp(Seg_Pos,Led_Buf[Seg_Pos]);
	
	if(Relay_flash){
		if(++Time_3s == 3000){
			Relay_flash = 0;
			Time_3s = 0;
		}
	}
	else Time_3s = 0;
}

void Delay750ms(void)	//@12.000MHz
{
	unsigned char data i, j, k;

	_nop_();
	_nop_();
	i = 35;
	j = 51;
	k = 182;
	do
	{
		do
		{
			while (--k);
		} while (--j);
	} while (--i);
}


/*主函数区域*/
void main(){
	Sys_Init();
	Timer0_Init();
	Time_Write(Time);
	re_tempature();
	Delay750ms();
	while(1){
		Led_Proc();
		Key_Proc();
		Seg_Proc();
	}
}

 这道题也是很简单的，一次过