蓝桥杯单片机STC15F2K60S2第十二届省赛代码详细讲解（附完整代码）

—你的鼬先生2024-09-15 14:35

本文是写第十二届的蓝桥杯省赛代码，如果是新手的话，欢迎去观看我专门为新手写的一篇。也欢迎收录该专栏。

蓝桥杯单片机STC15F2K60S2第十三届省赛代码详细讲解（附完整代码）

专栏：

蓝桥杯单片机

接下来直接上正文。

试题

main.c

复制代码 
#include <STC15F2K60S2.H>
#include "display.h"
#include "ds1302.h"
#include "onewire.h"
#include "iic.h"

void Key_Board(void);
void Show_Switch(void);
void LED(void);


ds1302 Date ={55,59,23};
int Temp;
int Val;
unsigned char Switching=1;
unsigned char Tempara=25;
unsigned char ParaFlag=0;
unsigned char Mode=0;
unsigned char ValFlag=1;

void main()
{
	System_Init();
	while(1)
	{
		Temp=Read_Temp();
		Key_Board();
		Show_Switch();
		LED();
	}
}

void Key_Board(void)
{
	unsigned char Key;
	P44=0;P42=1;P3 |= 0x0f;
	Key=P3;Key &=0x0c;
	if(Key != 0x0c)
	{
		Delayms(5);
		if(Key != 0x0c)
		{
			switch(Key)
			{
				case 0x04: Switching++; if(Switching>3)Switching=1;
					break; //S4
				case 0x08: Mode = !Mode;				
					break; //S5					
			}
		}
	}
	while(Key !=0x0c)
	{
		Key=P3;Key &=0x0c;
		Show_Switch();
	}
	
	P42=0;P44=1;P3 |= 0x0f;
	Key=P3;Key &=0x0c;
	if(Key != 0x0c)
	{
		Delayms(5);
		if(Key != 0x0c)
		{
			if(ParaFlag==1)
			{
				switch(Key)
				{			
					case 0x04: Tempara--;break; //S8
					case 0x08: Tempara++;break; //S9				
				}
			}
		}
	}
	while(Key !=0x0c)
	{
		Key=P3;Key &=0x0c;
		Show_Switch();
	}
}

void Show_Switch(void)
{
	switch(Switching)
	{
		case 1:
			ParaFlag=0;			
			ShowNumber(1,12);ShowNumber(5,Temp/1000);ShowFNumber(6,Temp/100%10);
			ShowNumber(7,Temp/10%10);ShowNumber(8,Temp%10);			
			break;
		case 2:
			ParaFlag=1; 
			ShowNumber(1,11);ShowNumber(7,Tempara/10);ShowNumber(8,Tempara%10);			
			break;
		case 3:
			ParaFlag=0;
			if(!ValFlag)
			{
				ShowNumber(1,13);ShowFNumber(6,(unsigned char)Val/100);ShowNumber(7,(unsigned char)Val/10%10);
				ShowNumber(8,(unsigned char)Val%10);
			}
			else 
			{
				ShowNumber(1,13);ShowNumber(8,Val);
			}
			break;
	}
	if(Mode == 0)
	{	
		ValFlag=1;
		Show_LED(1,ON);
		
		if(Temp/100 < Tempara) 
		{
			Val=0;							
		}
		else
		{
				
			Val=5;
		}
		Read_DAC(Val);
	}
	else
	{
		Show_LED(1,OFF);
		ValFlag=0;
		Val = Temp*3/20 -2;
		Read_DAC((Val/100)+(((Val/10)%10)/10)+((Val%10)/10));  
	}		                      
}

void LED(void)
{
	if(Switching ==1) Show_LED(2,ON);
	else Show_LED(2,OFF);
	
	if(Switching ==2) Show_LED(3,ON);
	else Show_LED(3,OFF);
	
	if(Switching ==3) Show_LED(4,ON);
	else Show_LED(4,OFF);
}

onewire.c

复制代码 
/*	# 	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 "onewire.h"
//
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;
		Delay_OneWire(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;
}

//double Read_Temp(void)
//{
//	unsigned char temp;
//	double Temp;
//	unsigned char Th,Tl;
//	
//	init_ds18b20();
//	Write_DS18B20(0xcc);
//	Write_DS18B20(0x44);
//	init_ds18b20();
//	Write_DS18B20(0xcc);
//	Write_DS18B20(0xbe);
//	
//	
//	Tl=Read_DS18B20();
//	Th=Read_DS18B20();
//		
//	temp=Th<<8;
//	temp |=Tl;
//	Temp = (int)(temp*0.625);
//	return Temp;
//}

int Read_Temp(void)
{
	unsigned char th,tl;
	int temp;
	init_ds18b20();

	Write_DS18B20(0xcc);
	Write_DS18B20(0x44);
	init_ds18b20();
	
	Write_DS18B20(0xcc);
	Write_DS18B20(0xbe);
	
	tl=Read_DS18B20();
	th= Read_DS18B20();
	
	temp = (th*256 + tl)*6.25;//0.0625
	return temp;
}

onewire.h

复制代码 
#ifndef  __ONEWIRE_H__
#define  __ONEWIRE_H__

#include <STC15F2K60S2.H>

//float Read_Temp(void);
int Read_Temp(void);


#define DQ  P14

#endif

iic.c

复制代码 
/*	#   I2C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 "iic.h"
#include "intrins.h"
#define DELAY_TIME	5

//
static void I2C_Delay(unsigned char n)
{
    do
    {
        _nop_();_nop_();_nop_();_nop_();_nop_();
        _nop_();_nop_();_nop_();_nop_();_nop_();
        _nop_();_nop_();_nop_();_nop_();_nop_();		
    }
    while(n--);      	
}

//
void I2CStart(void)
{
    sda = 1;
    scl = 1;
	I2C_Delay(DELAY_TIME);
    sda = 0;
	I2C_Delay(DELAY_TIME);
    scl = 0;    
}

//
void I2CStop(void)
{
    sda = 0;
    scl = 1;
	I2C_Delay(DELAY_TIME);
    sda = 1;
	I2C_Delay(DELAY_TIME);
}

//
void I2CSendByte(unsigned char byt)
{
    unsigned char i;
	
    for(i=0; i<8; i++){
        scl = 0;
		I2C_Delay(DELAY_TIME);
        if(byt & 0x80){
            sda = 1;
        }
        else{
            sda = 0;
        }
		I2C_Delay(DELAY_TIME);
        scl = 1;
        byt <<= 1;
		I2C_Delay(DELAY_TIME);
    }
	
    scl = 0;  
}

//
unsigned char I2CReceiveByte(void)
{
	unsigned char da;
	unsigned char i;
	for(i=0;i<8;i++){   
		scl = 1;
		I2C_Delay(DELAY_TIME);
		da <<= 1;
		if(sda) 
			da |= 0x01;
		scl = 0;
		I2C_Delay(DELAY_TIME);
	}
	return da;    
}

//
unsigned char I2CWaitAck(void)
{
	unsigned char ackbit;
	
    scl = 1;
	I2C_Delay(DELAY_TIME);
    ackbit = sda; 
    scl = 0;
	I2C_Delay(DELAY_TIME);
	
	return ackbit;
}

//
void I2CSendAck(unsigned char ackbit)
{
    scl = 0;
    sda = ackbit; 
	I2C_Delay(DELAY_TIME);
    scl = 1;
	I2C_Delay(DELAY_TIME);
    scl = 0; 
	sda = 1;
	I2C_Delay(DELAY_TIME);
}

void Read_DAC(double Data)
{
//	double temp;
//	temp = Data/100+Data/10%10/10+Data%10/10;
	
	I2CStart();
	I2CSendByte(0x90);
	I2CWaitAck();
	I2CSendByte(0x40);	//通道0x40是发送AD信号
	I2CWaitAck();
	I2CSendByte(Data);
	I2CWaitAck();
	I2CStop();
	
}

iic.h

复制代码 
#ifndef  __IIC_H__
#define  __IIC_H__

#include <stc15.h>

#define sda  P21
#define scl  P20

//unsigned char Read_ADC(unsigned char channel);
void Read_DAC(double Data);

#endif

display.c

复制代码 
#include <STC15F2K60S2.H>
#include "display.h"


code unsigned char Show_Number[] = {
	0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,	//0~9
	0xBF,	//- 10
	0x88,	//A 11
	0xC6,	//C 12
	0x8C	//P 13
};

code unsigned char Show_FNumber[] ={
	0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10
};

void Select_HC573(unsigned char Number)
{
	switch(Number)
	{
		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;
	}
	P2=(P2 &0x1f)|0x00;
}

void Delayms(int ms)	//@12.000MHz
{
	unsigned char data i, j;
	int k;
	
	for(k=0;k<ms;k++)
	{
		i = 12;
		j = 169;
		do
		{
			while (--j);
		} while (--i);
	}
}



void System_Init(void)
{
	P0 =0x00;
	Select_HC573(5);
	Select_HC573(6);
	P0 =0xFF;
	Select_HC573(4);
}

void ShowNumber(unsigned char Pos,unsigned char Data)
{
	P0 = 0x01<<Pos -1;
	Select_HC573(6);
	P0=Show_Number[Data];
	Select_HC573(7);
	Delayms(1);
	
	P0 = 0x01<<Pos -1;
	Select_HC573(6);
	P0=0xff;
	Select_HC573(7);
}

void ShowFNumber(unsigned char Pos,unsigned char Data)
{
	P0 = 0x01<<Pos -1;
	Select_HC573(6);
	P0=Show_FNumber[Data];
	Select_HC573(7);
	Delayms(1);
	
	P0 = 0x01<<Pos -1;
	Select_HC573(6);
	P0=0xff;
	Select_HC573(7);
}

void Show_LED(unsigned char Number,unsigned char state)
{
	static unsigned char temp=0xff;
	
	if(state)
	{
		switch(Number)
		{
			case 1:temp &=0xfe;break;
			case 2:temp &=0xfd;break;
			case 3:temp &=0xfb;break;
			case 4:temp &=0xf7;break;
		}
	}
	else
	{
		switch(Number)
		{
			case 1:temp |=0x01;break;
			case 2:temp |=0x02;break;
			case 3:temp |=0x04;break;
			case 4:temp |=0x08;break;
		}
	}
	P0 =temp;
	Select_HC573(4);
}

display.h

复制代码 
#ifndef		__DISPLAY_H__
#define		__DISPLAY_H__

#define ON		1
#define OFF		0

void System_Init(void);
void ShowNumber(unsigned char Pos,unsigned char Data);
void ShowFNumber(unsigned char Pos,unsigned char Data);
void Show_LED(unsigned char Number,unsigned char state);
void Delayms(int ms);	//@12.000MHz


#endif

ds1302.c

复制代码 
/*	# 	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 "ds1302.h"
#include <STC15F2K60S2.H>


sbit SCK = P1^7;		
sbit SDA = P2^3;		
sbit RST = P1^3; 

//
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);			
}

#define	WP		0x8e
#define W_Sec	0x80
#define R_Sec	0x81
#define W_Min	0x82
#define R_Min	0x83
#define W_Hour	0x84
#define R_Hour	0x85

void Write_Time(ds1302 *Date)
{
	unsigned char Sec,Min,Hour;
	Hour = Date -> Hour/10*16 + Date->Hour%10;
	Min = Date->Min/10*16+Date->Min%10;
	Sec = Date->Sec/10*16+Date->Sec%10;
	
	Write_Ds1302_Byte(WP,0x00);
	Write_Ds1302_Byte(W_Sec,Sec);
	Write_Ds1302_Byte(W_Min,Min);
	Write_Ds1302_Byte(W_Hour,Hour);
	Write_Ds1302_Byte(WP,0x00);
}

ds1302 Read_Time(void)
{
	unsigned char Hour,Min,Sec;
	ds1302 Date;
	
	Hour =  Read_Ds1302_Byte(R_Hour);
	Min =  Read_Ds1302_Byte(R_Min);
	Sec =  Read_Ds1302_Byte(R_Sec);
	
	Date.Hour=Hour/16*10+Hour%16;
	Date.Min=Min/16*10+Min%16;
	Date.Sec=Sec/16*10+Sec%16;
	
	return Date;
}

ds1302.h

复制代码 
#ifndef  __DS1302_H__
#define  __DS1302_H__

#include <STC15F2K60S2.H>
#include "intrins.h"

typedef struct {
	unsigned char Sec;
	unsigned char Min;
	unsigned char Hour;
}ds1302;

void Write_Time(ds1302 *Date);
ds1302 Read_Time(void);


#endif
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