第九届蓝桥杯单片机组省赛赛题

other.c

#include 

void Delay2ms(void)
{
	unsigned char i, j;

	i = 22;
	j = 128;
	do
	{
		while (--j);
	} while (--i);
}

unsigned char seg_tran(int number)
{
	unsigned char date;
	
	switch(number)
	{
		case	0	:	date = 	0xc0	;	break;
		case	1	:	date = 	0xf9	;	break;
		case	2	:	date = 	0xa4	;	break;
		case	3	:	date = 	0xb0	;	break;
		case	4	:	date = 	0x99	;	break;
		case	5	:	date = 	0x92	;	break;
		case	6	:	date = 	0x82	;	break;
		case	7	:	date = 	0xf8	;	break;
		case	8	:	date = 	0x80	;	break;
		case	9	:	date = 	0x90	;	break;
		case	10	:	date = 	0xbf	;	break;//-
		case	11	:	date = 	0xc6	;	break;//c
		case	12	:	date = 	0x8c	;	break;//p
		case	13	:	date = 	0x86	;	break;//e
		case	14	:	date = 	0xc7	;	break;//L
		case 	15	:	date = 	0xc8	;	break;//a
		case 	16	:	date = 	0xff	;	break;//kong
	}
	
	return date;
}

void seg_disp(int adr,int number)
{
	unsigned char seg_adr[8] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
	
	P2 = P2&0x1f|0xe0;
	P2 = P2&0x1f;
	P0 = seg_adr[adr];
	
	P2 = P2&0x1f|0xc0;
	P2 = P2&0x1f;
	P0 = seg_tran(number);
	
	P2 = P2&0x1f|0xe0;
	P2 = P2&0x1f;
}
	
unsigned char  key_scan(void)
{
	unsigned char key_mark;
	P3 = 0x0f;
	
	if(P30 == 0)	key_mark = 7;
	else if(P31 == 0)	key_mark = 6;
	else if(P32 == 0)	key_mark = 5;
	else if(P33 == 0)	key_mark = 4;
	else key_mark = 0;
	
	return key_mark;
}

void close_perl(void)
{
	P0 = 0xff;
	P2 = P2&0x1f|0x80;
	P2 = P2&0x1f;
	
	P0 = 0x00;
	P2 = P2&0x1f|0xa0;
	P2 = P2&0x1f;
}

void Timer0Init(void)		//10毫秒@12.000MHz
{
	AUXR &= 0x7F;		//定时器时钟12T模式
	TMOD &= 0xF0;		//设置定时器模式
	TL0 = 0xF0;		//设置定时初值
	TH0 = 0xD8;		//设置定时初值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0开始计时
	ET0 = 1;
	EA = 1;
}

void Timer1Init(void)		//10毫秒@12.000MHz
{
	AUXR &= 0xBF;		//定时器时钟12T模式
	TMOD &= 0x0F;		//设置定时器模式
	TL1 = 0xF0;		//设置定时初值
	TH1 = 0xD8;		//设置定时初值
	TF1 = 0;		//清除TF1标志
	TR1 = 1;		//定时器1开始计时
	ET1 = 1;
	EA = 1;
}


void Delay10us(void)		//@11.0592MHz
{
	unsigned char i;

	_nop_();
	i = 25;
	while (--i);
}

void Delay50us(void)		//@11.0592MHz
{
	unsigned char i, j;

	_nop_();
	i = 1;
	j = 134;
	do
	{
		while (--j);
	} while (--i);
}

void Delay250us()		//@11.0592MHz
{
	unsigned char i, j;

	_nop_();
	i = 3;
	j = 173;
	do
	{
		while (--j);
	} while (--i);
}

other.h

#ifndef __OTHER_H_
#define __OTHER_H_

#include 
#include 

void Delay2ms(void);
unsigned char seg_tran(int number);
void seg_disp(int adr,int number);
unsigned char  key_scan(void);
void close_perl(void);
void Timer0Init(void);
void Timer1Init(void);
void Delay10us(void);
void Delay50us(void);
void Delay250us(void);

#endif 

iic.c

unsigned char adc_pcf(void)
{
	unsigned char date;
	IIC_Start();
	
	IIC_SendByte(0x90); 
	IIC_WaitAck();
	IIC_SendByte(0x43);
	IIC_WaitAck();
	
	IIC_Start();
	IIC_SendByte(0x91);
	IIC_WaitAck();
	date = IIC_RecByte();
	IIC_WaitAck();
	
	IIC_Stop();
	return date;
}

void ee_write(unsigned char adress,unsigned char date)
{
	EA = 0;
	
	IIC_Start();
	
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(adress);
	IIC_WaitAck();
	IIC_SendByte(date);
	IIC_WaitAck();
	
	IIC_Stop();
	
	EA = 1;
}

unsigned char ee_read(unsigned char adress)
{
	unsigned char date;
	
	EA = 0;
	
	IIC_Start();
	
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(adress);
	IIC_WaitAck();
	
	IIC_Start();
	
	IIC_SendByte(0xa1);
	IIC_WaitAck();
	date = IIC_RecByte();
	IIC_WaitAck();
	
	IIC_Stop();
	
	EA = 1;
	
	return date;
}

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); 

unsigned char adc_pcf(void);
void ee_write(unsigned char adress,unsigned char date);
unsigned char ee_read(unsigned char adress);

#endif

main.c

#include 
#include 

#define led1 0x01
#define led2 0x02
#define led3 0x04
#define led4 0x08
#define led5 0x10
#define led6 0x20
#define led7 0x40
#define led8 0x80

unsigned char key_old;

unsigned char adc;
float adc_f;
unsigned int adc_100;
unsigned char led_time = 40;
int led_stateA = 0;//流转组别
unsigned char led_stateB = 0;//每个组别的状态
unsigned char timer0_up;
unsigned char timer1_up;
unsigned char State1[8] = {led1,led2,led3,led4,led5,led6,led7,led8};
unsigned char State2[8] = {led8,led7,led6,led5,led4,led3,led2,led1};
unsigned char State3[4] = {led1|led8,led2|led7,led3|led6,led4|led5};
unsigned char State4[4] = {led4|led5,led3|led6,led2|led7,led1|led8};
unsigned char change_mode;
unsigned char light_mode;

bit seg_bit;
bit led_start;

void led_pro(void)
{
	P0 = 0xff;
	if(led_stateA == 0)
	{
			P0 = (P0|0xff)&(~State1[led_stateB]);
			P2 = P2&0x1f|0x80;
			P2 = P2&0x1f;
			if(led_stateB == 8)	
			{
				led_stateB = 0;
				led_stateA++;
			}
	}
	else if(led_stateA == 1)
	{
			P0 = (P0|0xff)&(~State2[led_stateB]);
			P2 = P2&0x1f|0x80;
			P2 = P2&0x1f;
			if(led_stateB == 8)	
			{
				led_stateB = 0;
				led_stateA++;
			}
	}
	else if(led_stateA == 2)
	{
			P0 = (P0|0xff)&(~State3[led_stateB]);
			P2 = P2&0x1f|0x80;
			P2 = P2&0x1f;
			if(led_stateB == 4)	
			{
				led_stateB = 0;
				led_stateA++;
			}
	}
	else if(led_stateA == 3)
	{
			P0 = (P0|0xff)&(~State4[led_stateB]);
			P2 = P2&0x1f|0x80;
			P2 = P2&0x1f;
			if(led_stateB == 4)	
			{
				led_stateB = 0;
				led_stateA++;
			}
	}
	switch(light_mode)
	{
		case 1:
			Delay250us();
		break;
		
		case 2:
			Delay50us();
		break;
		
		case 3:
			Delay10us();
		break;
			
		case 4:
			
		break;
	}
	close_perl();
	switch(light_mode)
	{
		case 1:
			Delay250us();
		break;
		
		case 2:
			Delay50us();
		break;
		
		case 3:
			Delay10us();
		break;
			
		case 4:
			
		break;
	}
	if(led_stateA == 4)
	{
		led_stateA = 0;
	}
	
}

void seg_pro(void)
{
	adc = adc_pcf();
	adc_f = (float)adc/255*5;
	adc_100 = adc_f*100;
	ee_write(0x01,led_time);
	if(adc < 64)	light_mode = 1;
	else if((adc >= 64)&&(adc < 128))	light_mode = 2;
	else if((adc >= 128)&&(adc < 192))	light_mode = 3;
	else if(adc > 192)	light_mode = 4;
	
	switch(change_mode)
	{
		case 0:
			seg_disp(0,16);Delay2ms();
			seg_disp(1,16);Delay2ms();
			seg_disp(2,16);Delay2ms();
			seg_disp(3,16);Delay2ms();
			seg_disp(4,16);Delay2ms();
			seg_disp(5,16);Delay2ms();
			seg_disp(6,16);Delay2ms();
			seg_disp(7,16);Delay2ms();
		break;
		
		case 1:
			seg_disp(0,10);Delay2ms();
			if(seg_bit == 0)
			{
				seg_disp(1,led_stateA+1);Delay2ms();
			}
			else 
			{
				seg_disp(1,16);Delay2ms();
			}
			seg_disp(2,10);Delay2ms();
			
			if(led_time >= 100)	seg_disp(4,led_time/100);Delay2ms();
			seg_disp(5,led_time%100/10);Delay2ms();
			seg_disp(6,0);Delay2ms();
			seg_disp(7,0);Delay2ms();
		break;
			
		case 2:
			seg_disp(0,10);Delay2ms();
			seg_disp(1,led_stateA+1);Delay2ms();
			seg_disp(2,10);Delay2ms();
			
			if(seg_bit == 0)
			{
				if(led_time > 100)	seg_disp(4,led_time/100);Delay2ms();
				seg_disp(5,led_time%100/10);Delay2ms();
				seg_disp(6,0);Delay2ms();
				seg_disp(7,0);Delay2ms();	
			}
			else
			{
				seg_disp(4,16);Delay2ms();
				seg_disp(5,16);Delay2ms();
				seg_disp(6,16);Delay2ms();
				seg_disp(7,16);Delay2ms();
			}
		break;
	}
	while((key_scan() == 4)&&(change_mode == 0))
	{	
		adc = adc_pcf();
		if(adc < 64)	light_mode = 1;
		else if((adc >= 64)&&(adc < 128))	light_mode = 2;
		else if((adc >= 128)&&(adc < 192))	light_mode = 3;
		else if(adc > 192)	light_mode = 4;
		seg_disp(6,10);Delay2ms();
		seg_disp(7,light_mode);Delay2ms();
		led_pro();
	}
}

void key_pro(void)
{
	unsigned char key_vol,key_down;
	
	key_vol = key_scan();
	key_down = key_vol&(key_vol^key_old);
	key_old = key_vol;
	
	switch(key_down)
	{
		case 7:
			ET0 = ~ET0;
			led_start = 1;
		break;
		
		case 6:
			change_mode ++;
			if(change_mode == 3)
			{
				change_mode = 0;
			}
			led_start = 1;
		break;
		
		case 5:
			switch(change_mode)
			{
				case 1:
					led_stateA ++;
					if(led_stateA == 4)	led_stateA = 0;
				break;
				
				case 2:
					led_time = led_time + 10;
					if(led_time > 120)	led_time = 40;
				break;
			}
			led_start = 1;
		break;
		
		case 4:
			switch(change_mode)
			{
				case 1:
					led_stateA --;
					if(led_stateA < 0)	led_stateA = 3;
				break;
				
				case 2:
					led_time = led_time - 10;
					if(led_time < 40)	led_time = 120;
				break;
			}
			led_start = 1;
		break;
	}
}

void main(void)
{
	Timer0Init();
	close_perl();
	led_time = ee_read(0x01);
	Timer1Init();
	while(1)
	{
		key_pro();
		if(led_start == 1)
		{
			seg_pro();
			led_pro();
		}
	}
}

void timer0(void) interrupt 1
{
	if(led_start == 1)
	{
		timer0_up++;
		if(timer0_up == led_time)
		{
			timer0_up = 0;
			led_stateB ++;
		}
	}
}

void timer1(void) interrupt 3
{
	timer1_up ++;
	if(timer1_up == 80)
	{
		timer1_up = 0;
		seg_bit = ~seg_bit;
	}
}