蓝桥杯单片机 第六届 国赛 智能物料传送系统

本文介绍了一款嵌入式系统的主程序,详细讲解了如何使用IIC总线进行数据通信,重点强调了在两次EEPROM数据保存时的延迟处理,以确保任务的正确执行。涉及的函数如定时器、LED显示、超声波测距、按键控制及EEPROM操作等。

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这次的比前几届的简单多了,终于可以顺顺利利的完成所有的任务。其中要注意的是两次eeprom的数据保存当中要一个小小的delay,不然会出错!

题目:

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代码:

main.c

#include <STC12C5A60S2.H>
#include"intrins.h"
#include"iic.h"
sbit TX=P1^0;
sbit RX=P1^1;
int led_work=0xff;
int rb_2;
int L3_mode=0;
int distance;
int Y5_work=0x00;
char last_time_1=2;//一类货物传送时间
char last_time_2=4;//二类货物传送时间
int weight_mode=0;
int smg_mode=1;
int work_mode; //货物类型
sbit S4=P3^3;
sbit S5=P3^2;
sbit S6=P3^1;
sbit S7=P3^0;
int running=0;//是否运行
int last_time;
int L4_work=0;
int set_mode=0;
unsigned int code xianshi[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};
void choose_573(int i)
{
	switch(i)
	{
		case(0):P2=(P2&0x1f)|0x00;break;
		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;
	}
}
void init_system()
{
	choose_573(4);
	P0=0xff;
	choose_573(5);
	P0=0x00;
	choose_573(0);
}
//==============================定时器0
void Timer0Init(void)		//5毫秒@11.0592MHz
{
	AUXR |= 0x80;		//定时器时钟1T模式
	TMOD &= 0xF0;		//设置定时器模式
	TL0 = 0x00;		//设置定时初始值
	TH0 = 0x28;		//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;
}
int count_1=0;int count_2=0;
void service_timer0() interrupt 1
{
	count_1++;
	if(count_1>=100)
	{
		count_1=0;
		L3_mode++;
		if(L3_mode>=2)
		{
			L3_mode=0;
		}
	}
	if(running!=0&&last_time!=0)
	{
		count_2++;
		if(count_2>=200)
		{
			count_2=0;
			last_time--;
			if(last_time==0)
			{
				running=0;
				smg_mode=1;
				Y5_work=(Y5_work&0xef)|0x00;
				choose_573(5);
				P0=Y5_work;
				choose_573(0);
			}
		}
	}
}
//==============================
//==============================led

void rb_2_display()
{
	rb_2=get_rb2();
}
void led_display()
{
	//L1
	if(rb_2<100)
	{
		weight_mode=1;
		led_work=(led_work&0xfe)|0x00;
		choose_573(4);
		P0=led_work;
		choose_573(0);
	}
	else
	{
		led_work=(led_work&0xfe)|0x01;
		choose_573(4);
		P0=led_work;
		choose_573(0);
	}
	
	//L2
	if(rb_2>=100&&rb_2<400)
	{
		weight_mode=2;
		led_work=(led_work&0xfd)|0x00;
		choose_573(4);
		P0=led_work;
		choose_573(0);
	}
	else
	{
		led_work=(led_work&0xfd)|0x02;
		choose_573(4);
		P0=led_work;
		choose_573(0);
	}
	//L3
	if(rb_2>=400&&L3_mode==1)
	{
		weight_mode=3;
		led_work=(led_work&0xfb)|0x00;
		Y5_work=(Y5_work&0xbf)|0x40;
		choose_573(4);
		P0=led_work;
		choose_573(5);
		P0=Y5_work;
		choose_573(0);
	}
	else if(rb_2>=400&&L3_mode==0)
	{
		weight_mode=3;
		led_work=(led_work&0xfb)|0x04;
		Y5_work=(Y5_work&0xbf)|0x40;
		choose_573(4);
		P0=led_work;
		choose_573(5);
		P0=Y5_work;
		choose_573(0);
	}
	else if(rb_2<400)
	{
		led_work=(led_work&0xfb)|0x04;
		Y5_work=(Y5_work&0xbf)|0x00;
		choose_573(4);
		P0=led_work;
		choose_573(5);
		P0=Y5_work;
		choose_573(0);
	}
	
}
//==============================
//==============================超声波
void Delay12us()		//@12.000MHz
{
	unsigned char i;

	_nop_();
	_nop_();
	i = 33;
	while (--i);
}
void send_wave()
{
	int i;
	for(i=0;i<8;i++)
	{
		TX=1;
		Delay12us();
		TX=0;
		Delay12us();
	}
}
void get_distance()
{
	unsigned int time=0;
	AUXR |= 0x40;		//定时器时钟1T模式
	TMOD &= 0x0F;		//设置定时器模式
	TL1 = 0x00;		//设置定时初始值
	TH1 = 0x00;		//设置定时初始值
	TF1 = 0;		//清除TF1标志
	TR1 = 0;		//定时器1开始计时
	send_wave();
	TR1=1;
	while(RX==1&&TF1==0);
	TR1=0;
	if(TF1==0)
	{
		time=TH1;
		time=(time<<8)|TL1;
		distance=time*0.017;
		distance=distance/12;
	}
	else
	{
		distance=999;
		TF1=0;
	}
	TH1=TL1=0;
	if(distance<=30)
	{
		work_mode=1;
	}
	else if(distance>30)
	{
		work_mode=2;
	}
}
//==============================
//==============================按键
void Delay10ms()		//@11.0592MHz
{
	unsigned char i, j;

	i = 108;
	j = 145;
	do
	{
		while (--j);
	} while (--i);
}
void key_board()
{
	//S4
	if(S4==0&&weight_mode==2)
	{
		Delay10ms();
		if(S4==0&&weight_mode==2)
		{
			smg_mode=2;
			Y5_work=(Y5_work&0xef)|0x10;
			choose_573(5);
			P0=Y5_work;
			choose_573(0);
			running=1;
			if(work_mode==1)
			{
				last_time=last_time_1;
			}
			if(work_mode==2)
			{
				last_time=last_time_2;
			}
		}
		while(!S4);
	}
	//S5
	if(S5==0&&smg_mode==2)
	{
		Delay10ms();
		if(S5==0&&smg_mode==2)
		{
			if(running==1)
			{
				running=0;
				Y5_work=(Y5_work&0xef)|0x00;
				choose_573(5);
				P0=Y5_work;
				choose_573(0);
				L4_work=1;
			}
			else
			{
				running=1;
				Y5_work=(Y5_work&0xef)|0x10;
				choose_573(5);
				P0=Y5_work;
				choose_573(0);
				L4_work=0;
			}
		}
		while(!S5);
	}
	
	//S6
	if(S6==0&&weight_mode==1)
	{
		Delay10ms();
		if(S6==0&&weight_mode==1)
		{	
			smg_mode=3;
			set_mode++;
			if(set_mode>=3)
			{
				set_mode=0;
				smg_mode=1;
			}
		}
		while(!S6);
	}
	//S7
	if(S7==0&&smg_mode==3)
	{
		Delay10ms();
		if(S7==0&&smg_mode==3)
		{
			if(set_mode==1)
			{
				last_time_1++;
				if(last_time_1>10)
				{
					last_time_1=1;
				}
			}
			if(set_mode==2)
			{
				last_time_2++;
				if(last_time_2>10)
				{
					last_time_2=1;
				}
			}
		}
		while(!S7);
	}
}
//==============================
//==============================L4
void L4_display()
{
	if(L4_work==1)
	{
		if(L3_mode==1)
		{
			led_work=(led_work&0xf7)|0x00;
			choose_573(4);
			P0=led_work;
			choose_573(0);
		}
		else
		{
			led_work=(led_work&0xf7)|0x08;
			choose_573(4);
			P0=led_work;
			choose_573(0);
		}
	}
	else if(L4_work==0)
	{
		led_work=(led_work&0xf7)|0x08;
		choose_573(4);
		P0=led_work;
		choose_573(0);
	}
}
//==============================
//==============================smg
void Delay400us()		//@11.0592MHz
{
	unsigned char i, j;

	i = 5;
	j = 74;
	do
	{
		while (--j);
	} while (--i);
}
void SMG(int wei,int dat)
{
	choose_573(6);
	P0=0x80>>(wei-1);
	choose_573(7);
	P0=xianshi[dat];
	choose_573(0);
	Delay400us();
	choose_573(7);
	P0=xianshi[10];
	choose_573(0);
}
void smg_display()
{
	//测试
//	SMG(1,distance%10);
//	SMG(2,(distance%100)/10);
//	SMG(3,(distance%1000)/100);
//	SMG(4,weight_mode);
//	SMG(5,10);
//	SMG(6,smg_mode);
//	SMG(7,10);
//	SMG(8,10);
	if(smg_mode==1)
	{
		SMG(1,work_mode);
		SMG(2,10);
		SMG(3,10);
		SMG(4,distance%10);
		SMG(5,(distance%100)/10);
		SMG(6,10);
		SMG(7,10);
		SMG(8,smg_mode);
	}
	if(smg_mode==2)
	{
		SMG(1,last_time%10);
		SMG(2,(last_time%100)/10);
		SMG(3,10);
		SMG(4,10);
		SMG(5,10);
		SMG(6,10);
		SMG(7,10);
		SMG(8,smg_mode);
	}
	if(smg_mode==3)
	{
		if(set_mode==2&&L3_mode==1)
		{
			SMG(1,last_time_2%10);
			SMG(2,(last_time_2%100)/10);
		}
		else if(set_mode==2&&L3_mode==0)
		{
			SMG(1,10);
			SMG(2,10);
		}
		else if(set_mode!=2)
		{
			SMG(1,last_time_2%10);
			SMG(2,(last_time_2%100)/10);
		}
		SMG(3,10);
		if(set_mode==1&&L3_mode==1)
		{
			SMG(4,last_time_1%10);
			SMG(5,(last_time_1%100)/10);
		}
		else if(set_mode==1&&L3_mode==0)
		{
			SMG(4,10);
			SMG(5,10);
		}
		else if(set_mode!=1)
		{
			SMG(4,last_time_1%10);
			SMG(5,(last_time_1%100)/10);
		}
		SMG(6,10);
		SMG(7,10);
		SMG(8,smg_mode);
	}
}
//==============================
//==============================eeprom
void eeprom_work()
{
	if(set_mode==0)
	{
		write_EEPROM(0x01,last_time_1);
		Delay10ms();
		write_EEPROM(0x33,last_time_2);
	}
}
//==============================
void main()
{
	init_system();
	Timer0Init();
	last_time_1=read_EEPROM(0x01);
	Delay10ms();
	last_time_2=read_EEPROM(0x33);
	while(1)
	{
		rb_2_display();
		led_display();
		smg_display();
		get_distance();
		key_board();
		L4_display();
		eeprom_work();
	}
}

iic.c

/*
  程序说明: IIC总线驱动程序
  软件环境: Keil uVision 4.10 
  硬件环境: CT107单片机综合实训平台 8051,12MHz
  日    期: 2011-8-9
*/

#include "reg52.h"
#include "intrins.h"

#define DELAY_TIME 5

#define SlaveAddrW 0xA0
#define SlaveAddrR 0xA1

//总线引脚定义
sbit SDA = P2^1;  /* 数据线 */
sbit SCL = P2^0;  /* 时钟线 */

void IIC_Delay(unsigned char i)
{
    do{_nop_();}
    while(i--);        
}
//总线启动条件
void IIC_Start(void)
{
    SDA = 1;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 0;
    IIC_Delay(DELAY_TIME);
    SCL = 0;	
}

//总线停止条件
void IIC_Stop(void)
{
    SDA = 0;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}

//发送应答
void IIC_SendAck(bit ackbit)
{
    SCL = 0;
    SDA = ackbit;  					// 0:应答,1:非应答
    IIC_Delay(DELAY_TIME);
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SCL = 0; 
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}

//等待应答
bit IIC_WaitAck(void)
{
    bit ackbit;
	
    SCL  = 1;
    IIC_Delay(DELAY_TIME);
    ackbit = SDA;
    SCL = 0;
    IIC_Delay(DELAY_TIME);
    return ackbit;
}

//通过I2C总线发送数据
void IIC_SendByte(unsigned char byt)
{
    unsigned char i;

    for(i=0; i<8; i++)
    {
        SCL  = 0;
        IIC_Delay(DELAY_TIME);
        if(byt & 0x80) SDA  = 1;
        else SDA  = 0;
        IIC_Delay(DELAY_TIME);
        SCL = 1;
        byt <<= 1;
        IIC_Delay(DELAY_TIME);
    }
    SCL  = 0;  
}

//从I2C总线上接收数据
unsigned char IIC_RecByte(void)
{
    unsigned char i, da;
    for(i=0; i<8; i++)
    {   
    	SCL = 1;
	IIC_Delay(DELAY_TIME);
	da <<= 1;
	if(SDA) da |= 1;
	SCL = 0;
	IIC_Delay(DELAY_TIME);
    }
    return da;    
}
int temp_1;
int get_rb2()
{
	IIC_Start();
	IIC_SendByte(0x90);
	IIC_WaitAck();
	IIC_SendByte(0x03);
	IIC_WaitAck();
	IIC_Stop();
	
	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	temp_1=IIC_RecByte();
	IIC_SendAck(1);                     
	IIC_Stop();
	temp_1=temp_1*1.96+0.5;
	return temp_1;
}
void write_EEPROM(int add,int dat)
{
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	IIC_SendByte(dat);
	IIC_WaitAck();
	IIC_Stop();
}
int read_EEPROM(int add)
{
	int temp;
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	
	IIC_Start();
	IIC_SendByte(0xa1);
	IIC_WaitAck();
	temp=IIC_RecByte();
	IIC_SendAck(1);
	IIC_Stop();
	return temp;
}

iic.h

#ifndef _IIC_H
#define _IIC_H

void IIC_Start(void); 
void IIC_Stop(void);  
bit IIC_WaitAck(void);  
void IIC_SendAck(bit ackbit); 
void IIC_SendByte(unsigned char byt); 
unsigned char IIC_RecByte(void); 
int get_rb2(); 
read_EEPROM(int add);
write_EEPROM(int add,int dat);
#endif
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