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蓝桥杯单片机省赛第十一届第一场
2022-07-02 03:29:00 【超561】
main.c
#include <STC15F2K60S2.H>
#include <IIC.H>
#define NO_KEY 0XFF
#define KEY_STATE0 0
#define KEY_STATE1 1
#define KEY_STATE2 2
void Device_ctrl(unsigned char p2date,unsigned char p0date)
{
P0=p0date;
P2=P2&0X1F|p2date;
P2&=0x1f;
}
unsigned int key_count;
unsigned char display_mode;
unsigned int set_dianya=0;
unsigned char count;
unsigned char key_press;
unsigned char key_scan()
{
static unsigned char key_state=KEY_STATE0;
unsigned char key_value=0,key_temp;
unsigned char key1,key2;
P30=0;P31=0;P32=0;P33=0;P34=1;P35=1;P42=1;P44=1;
if(P44==0){key1=0X70;}
if(P42==0){key1=0Xb0;}
if(P35==0){key1=0xd0;}
if(P34==0){key1=0xe0;}
if((P44==1)&&(P42==1)&&(P34==1)&&(P35==1)){key1=0xf0;}
P30=1;P31=1;P32=1;P33=1;P34=0;P35=0;P42=0;P44=0;
if(P30==0){key2=0x0e;}
if(P31==0){key2=0x0d;}
if(P32==0){key2=0x0b;}
if(P33==0){key2=0x07;}
if((P30==1)&&(P31==1)&&(P32==1)&&(P33==1)){key2=0x0f;}
key_temp=key1|key2;
switch(key_state)
{
case KEY_STATE0:
if(key_temp!=NO_KEY)
{
key_state=KEY_STATE1;
}
break;
case KEY_STATE1:
if(key_temp==NO_KEY)
{
key_state=KEY_STATE0;
}
else
{
switch(key_temp)
{
case 0x77:key_value=4;break;
case 0x7b:key_value=5;break;
case 0x7d:key_value=6;break;
case 0x7e:key_value=7;break;
case 0xb7:key_value=8;break;
case 0xbb:key_value=9;break;
case 0xbd:key_value=10;break;
case 0xbe:key_value=11;break;
case 0xd7:key_value=12;break;
case 0xdb:key_value=13;break;
case 0xdd:key_value=14;break;
case 0xde:key_value=15;break;
case 0xe7:key_value=16;break;
case 0xeb:key_value=17;break;
case 0xed:key_value=18;break;
case 0xee:key_value=19;break;
}
key_state=KEY_STATE2;
}
break;
case KEY_STATE2:
if(key_temp==NO_KEY)
{
key_state=KEY_STATE0;
}break;
}
return key_value;
}
void key_process()
{
unsigned char key_val;
if(key_count>=5)
{
key_count=0;
key_val=key_scan();
switch(key_val)
{
case 4:key_press++;break;
case 5:key_press++;break;
case 6:key_press++;break;
case 7:key_press++;break;
case 8:key_press++;break;
case 9:key_press++;break;
case 10:key_press++;break;
case 11:key_press++;break;
case 12:
display_mode++;
if(display_mode==3)
{display_mode=0;}
key_press=0;
break;
case 13:if(display_mode==2)
{count=0;}
key_press=0;
break;
case 14:key_press++;break;
case 15:key_press++;break;
case 16:
if(display_mode==1)
{
set_dianya=set_dianya+50;
if(set_dianya>500)
{set_dianya=0;}
}
key_press=0;break;
case 17:
if(display_mode==1)
{
if(set_dianya>0)
{
set_dianya=set_dianya-50;
}
else
{set_dianya=500;}
}
key_press=0;break;
case 18:key_press++;break;
case 19:key_press++;break;
}
}
}
unsigned char smg_display[8];
unsigned char smg_du[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
unsigned int smg_count;
unsigned int dianya;
unsigned char ad;
unsigned int ad_count;
unsigned int ad_before;
unsigned int ad_now;
unsigned char read_ad(unsigned char add)
{
unsigned char date;
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(add);
IIC_WaitAck();
IIC_Start();
IIC_SendByte(0x91);
IIC_WaitAck();
date=IIC_RecByte();
IIC_SendAck(1);
IIC_Stop();
return date;
}
void ad_process()
{
if(ad_count>10)
{
ad_count=0;
ad=read_ad(0x03);
dianya=ad/51.0f*100;
ad_before=dianya;
ad_now=read_ad(0x03);
ad_now=ad_now/51.0f*100;
if((ad_before>set_dianya)&&(ad_before>ad_now)&&(ad_now<set_dianya))
{
count++;
}
}
}
void smg_show()
{
unsigned int i;
Device_ctrl(0xc0,0);
Device_ctrl(0xe0,~smg_display[i]);
Device_ctrl(0xc0,0x01<<i);
i=(i+1)%8;
}
void smg_process()
{
if(smg_count>3)
{
smg_count=0;
if(display_mode==0)
{
smg_display[0]=0x3E;
smg_display[1]=0x00;
smg_display[2]=0x00;
smg_display[3]=0x00;
smg_display[4]=0x00;
smg_display[5]=smg_du[dianya/100]|0x80;
smg_display[6]=smg_du[dianya/10%10];
smg_display[7]=smg_du[dianya%10];
}
if(display_mode==1)
{
smg_display[0]=0x73;
smg_display[1]=0x00;
smg_display[2]=0x00;
smg_display[3]=0x00;
smg_display[4]=0x00;
smg_display[5]=smg_du[(set_dianya)/100]|0x80;
smg_display[6]=smg_du[(set_dianya)/10%10];
smg_display[7]=smg_du[(set_dianya)%10];
}
if(display_mode==2)
{
smg_display[0]=0x73;
smg_display[1]=0x00;
smg_display[2]=0x00;
smg_display[3]=0x00;
smg_display[4]=0x00;
smg_display[5]=0x00;
smg_display[6]=smg_du[count/10];
smg_display[7]=smg_du[count%10];
}
}
}
void Timer2Init() //1毫秒@12.000MHz
{
AUXR &= 0xFB; //定时器时钟12T模式
T2L = 0x18; //设置定时初值
T2H = 0xFC; //设置定时初值
AUXR |= 0x10; //定时器2开始计时
IE2|=0X04;
EA=1;
}
unsigned int led_count;
unsigned char led_ctrl=0xff;
unsigned int dianya_count;
bit led_flag=0;
void led_process()
{
if(led_count>10)
{
led_count=0;
if(dianya<set_dianya)
{
dianya_count++;
if(dianya_count>500)
{
led_flag=1;
dianya_count=0;
}
}
else
{
led_flag=0;
}
if(led_flag==1)
{
led_ctrl&=~0x01;
}
else
{
led_ctrl|=0x01;
}
if(count%2)
{
led_ctrl&=~0x02;
}
else
{
led_ctrl|=0x02;
}
if(key_press>=3)
{
led_ctrl&=~0x04;
}
else
{
led_ctrl|=0x04;
}
Device_ctrl(0x80,led_ctrl);
}
}
void main()
{
Timer2Init();
Device_ctrl(0xa0,0x00);
Device_ctrl(0x80,0xff);
while(1)
{
key_process();
smg_process();
ad_process();
led_process();
}
}
void timer2service() interrupt 12
{
key_count++;
smg_count++;
led_count++;
ad_count++;
smg_show();
}iic.c
#include "iic.h"
#define DELAY_TIME 5
//I2C总线内部延时函数
void IIC_Delay(unsigned char i)
{
do{_nop_();}
while(i--);
}
//I2C总线启动信号
void IIC_Start(void)
{
SDA = 1;
SCL = 1;
IIC_Delay(DELAY_TIME);
SDA = 0;
IIC_Delay(DELAY_TIME);
SCL = 0;
}
//I2C总线停止信号
void IIC_Stop(void)
{
SDA = 0;
SCL = 1;
IIC_Delay(DELAY_TIME);
SDA = 1;
IIC_Delay(DELAY_TIME);
}
//发送应答或非应答信号
void IIC_SendAck(bit ackbit)
{
SCL = 0;
SDA = ackbit;
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;
}
//I2C总线发送一个字节数据
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;
}
//I2C总线接收一个字节数据
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;
}
iic.h
#ifndef __IIC_H
#define __IIC_H
#include <STC15F2K60S2.H>
#include "intrins.h"
sbit SDA = P2^1;
sbit SCL = P2^0;
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);
#endif边栏推荐
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