第十三届蓝桥杯单片机省赛冲刺-巩固练习3
明天就正式比赛啦，希望大家都可以取得一个不错的成绩。
最后一天在把各个模块的使用敲一遍哦，一定要熟悉各个模块的代码
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下面的内容是小蜜蜂老师在微信公众号发布的，大家可以在练习一下，都是常考内容的综合使用
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#include "reg52.h"
#include "iic.h"sbit S6 = P3^1;
sbit S5 = P3^2;
sbit S4 = P3^3;
unsigned int adc_volt = 0,volt = 0;
//采集电压 和数码管显示变量
unsigned int param_volt = 300,alarm_count = 0;
//电压参数 、计数参数
unsigned char alarm_flag = 0,flash_flag = 0;
//报警标志 、闪烁标志
unsigned char led_stat = 0xff;
//led状态
unsigned int t_count = 0;
//计时
unsigned char interface = 0;
//界面切换
unsigned char code smg_data[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80};
unsigned char code smg_data_dot[]={0xc0-0x80,0xf9-0x80,0xa4-0x80,0xb0-0x80,0x99-0x80,0x92-0x80,0x82-0x80,0xf8-0x80,0x80-0x80};
void delay(unsigned int t)
{
while(t--);
}void Init_74HC138(unsigned char channel)
{
switch(channel)
{
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;
case 0:P2 = (P2 & 0x1f) | 0x00;
break;
}
P2 = (P2 & 0x1f) | 0x00;
}void SMG_All(unsigned char dat)
{
P0 = 0xff;
Init_74HC138(6);
P0 = dat;
Init_74HC138(7);
}void SMG_DisplayBit(unsigned char pos,unsigned char dat)
{
P0 = (0x01 << pos);
Init_74HC138(6);
P0 = dat;
Init_74HC138(7);
}void Read_ADC(void)
{
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x03);
IIC_WaitAck();
IIC_Stop();
IIC_Start();
IIC_SendByte(0x91);
IIC_WaitAck();
adc_volt = IIC_RecByte();
IIC_SendAck(1);
IIC_Stop();
//数据处理
volt = adc_volt * (5.0/255)*100;
}void SMG_Display_Data(void)
{
SMG_DisplayBit(1,0xff);
delay(200);
SMG_DisplayBit(2,0xff);
delay(200);
SMG_DisplayBit(3,0xff);
delay(200);
SMG_DisplayBit(4,0xff);
delay(200);
if(interface == 0)
{
//U 1000 0011 0xc1
SMG_DisplayBit(0,0xc1);
delay(200);
SMG_DisplayBit(5,smg_data_dot[volt/100]);
delay(200);
SMG_DisplayBit(6,smg_data[volt/10%10]);
delay(200);
SMG_DisplayBit(7,smg_data[volt%10]);
delay(200);
}
else if(interface == 1)
{
//P 0011 0001 0x8c
SMG_DisplayBit(0,0x8c);
delay(200);
SMG_DisplayBit(5,smg_data_dot[param_volt/100]);
delay(200);
SMG_DisplayBit(6,smg_data[param_volt/10%10]);
delay(200);
SMG_DisplayBit(7,smg_data[param_volt%10]);
delay(200);
}
else if(interface == 2)
{
//S
SMG_DisplayBit(0,0x92);
delay(200);
SMG_DisplayBit(5,0xff);
delay(200);
if(alarm_count > 9)
{
SMG_DisplayBit(6,smg_data[alarm_count/10]);
delay(200);
}
SMG_DisplayBit(7,smg_data[alarm_count%10]);
delay(200);
}
SMG_All(0xff);
delay(200);
}void Key_Scans(void)
{
//S4界面切换
if(S4 == 0)
{
delay(20);
if(S4 == 0)
{
while(S4 == 0)
{
SMG_Display_Data();
}
if(interface == 0)
{
interface = 1;
}
else if(interface == 1)
{
interface = 2;
}
else if(interface == 2)
{
interface = 0;
}
}
}
//电压参数减0.5v每次
if(S5 == 0)
{
delay(20);
if(S5 == 0)
{
while(S5 == 0)
{
SMG_Display_Data();
}
if(interface == 1)
{
param_volt -= 50;
//扩大100倍 分别显示处理
if(param_volt == 0)//边界处理
{
//减到最小值后 变成最大
param_volt = 500;
}
}
}
}//电压参数加0.5v每次
if(S6 == 0)
{
delay(20);
if(S6 == 0)
{
while(S6 == 0)
{
SMG_Display_Data();
}
if(interface == 1)
{
param_volt += 50;
//扩大100倍 分别显示处理
if(param_volt == 500)//边界处理
{
//加到最大值后变成最小值
param_volt = 0;
}
}
}
}
}void Led_Tackle(void)
{
if(volt < param_volt)
{
if(alarm_flag == 0)
{
alarm_flag = 1;
//报警标志
}
}
else
{
alarm_flag = 0;
flash_flag = 0;
t_count = 0;
alarm_count = 0;
led_stat |= 0xff;
P0 = led_stat;
Init_74HC138(4);
}
}
void Init_Timer(void)
{
TMOD = 0x01;
TH0= (65535-50000)/256;
TL0= (65535-50000)%256;
ET0= 1;
TR0= 1;
EA= 1;
}
void Init_System(void)
{
P0 = 0xff;
Init_74HC138(4);
P0 = 0x00;
Init_74HC138(5);
SMG_All(0xff);
}void main(void)
{
Init_System();
Init_Timer();
while(1)
{
Read_ADC();
Key_Scans();
SMG_Display_Data();
Led_Tackle();
}
}void Server_Timer0() interrupt 1
{
TH0= (65535-50000)/256;
TL0= (65535-50000)%256;
//启动报警
if(alarm_flag == 1)
{
t_count++;
if(t_count % 20 == 0) //1s
{
//还未到达最值计数值
if(alarm_count != 99)
{
alarm_count++;
}
//秒闪标志
if(flash_flag == 1)
{
if(led_stat & 0x80 == 0x80)
{
led_stat &= (~0x80);
//点亮L8
}
else
{
led_stat |= 0x80;
//熄灭L8
}
}
}if(t_count > 120) //超过6s
{
led_stat &= (~0x07);
//点亮L1 L2 L 3
flash_flag = 1;
}
else if(t_count > 80) //超过4s
{
led_stat &= (~0x03);
}
else if(t_count > 40) //超过2s
{
led_stat &= (~0x01);
//L1亮
}
else
{
led_stat = 0xff;
//关闭LED
}
P0 = led_stat;
Init_74HC138(4);
}
}
【蓝桥杯学习|【第十三届蓝桥杯单片机省赛冲刺-巩固练习3】】
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#include "reg52.h"
#include "iic.h"sbit S5 = P3^2;
sbit S4 = P3^3;
unsigned int temp = 0;
unsigned char led_stat = 0xff;
//led 状态
unsigned char adc_volt= 0,old_volt = 0;
//电压采集
unsigned int volt = 0;
//数码管显示电压
unsigned char old_grade = 0,grade = 0;
//灯光等级
//0-9 段码
unsigned char code smg_data[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80};
//0.-9.段码
unsigned char code smg_data_dot[]={0xc0-0x80,0xf9-0x80,0xa4-0x80,0xb0-0x80,0x99-0x80,0x92-0x80,0x82-0x80,0xf8-0x80,0x80-0x80};
//简单延时
void delay(unsigned int t)
{
while(t--);
}//锁存器初始化
void Init_74HC138(unsigned char channel)
{
switch(channel)
{
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;
case 0:P2 = (P2 & 0x1f) | 0x00;
break;
}
P2 = (P2 & 0x1f) | 0x00;
}//操作所有数码管void SMG_All(unsigned char dat)
{
P0 = 0xff;
Init_74HC138(6);
P0 = dat;
Init_74HC138(7);
}
//数码管安位操作
void SMG_DisplayBit(unsigned char pos,unsigned char dat)
{
P0 = (0x01 << pos);
Init_74HC138(6);
P0 = dat;
Init_74HC138(7);
}//数码管数据显示
void SMG_Display_V(void)
{
SMG_DisplayBit(0,0xbf);
delay(200);
SMG_DisplayBit(1,smg_data[grade]);
delay(200);
SMG_DisplayBit(2,0xbf);
delay(200);
SMG_DisplayBit(3,0xff);
delay(200);
SMG_DisplayBit(4,0xff);
delay(200);
SMG_DisplayBit(5,smg_data_dot[volt/100]);
delay(200);
SMG_DisplayBit(6,smg_data[volt/10%10]);
delay(200);
SMG_DisplayBit(7,smg_data[volt%10]);
delay(200);
SMG_All(0xff);
delay(200);
}//读取光敏通道电压
void Read_ADC(void)
{
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x01);
IIC_WaitAck();
IIC_Stop();
SMG_Display_V();
IIC_Start();
IIC_SendByte(0x91);
IIC_WaitAck();
adc_volt = IIC_RecByte();
IIC_SendAck(1);
IIC_Stop();
//数据处理
volt = adc_volt * (5.0/255)*100;
SMG_Display_V();
}//灯光控制
void Led_Working(void)
{
Read_ADC();
//等级0 全部灯熄灭
if(volt <= 500 && volt > 450)
{
grade = 0;
led_stat = 0xff;
}
//等级1 L1 点亮
else if(volt <= 450 && volt > 400)
{
grade = 1;
led_stat = 0xfe;
}
//等级2L1-L2 亮
else if(volt <= 400 && volt > 350)
{
grade = 2;
led_stat = 0xfc;
}
//等级3 L1-L3 亮
else if(volt <= 350 && volt > 300)
{
grade = 3;
led_stat = 0xf8;
}//等级4 L1-L4 点亮
else if(volt <= 300 && volt > 250)
{
grade = 4;
led_stat = 0xf0;
}
//等级5L1- L5 亮
else if(volt <= 250 && volt > 200)
{
grade = 5;
led_stat = 0xe0;
}
//等级6 L1-L6 亮
else if(volt <= 200 && volt > 150)
{
grade = 6;
led_stat = 0xc0;
}
//等级7 L1-L7 亮
else if(volt <= 150 && volt > 100)
{
grade = 7;
led_stat = 0x80;
}
//等级8 L1-L8 亮
else if(volt <= 50 && volt > 0)
{
grade = 8;
led_stat = 0x00;
;
} P0 = led_stat;
Init_74HC138(4);
}//AT24C02处理
void Write_AT24C02(unsigned char addr,unsigned char dat)
{
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(addr);
IIC_WaitAck();
IIC_SendByte(dat);
IIC_WaitAck();
IIC_Stop();
}//读AT24C02
unsigned int Read_AT24C02(unsigned char addr)
{
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(addr);
IIC_WaitAck();
IIC_Start();
IIC_SendByte(0xa1);
IIC_WaitAck();
temp = IIC_RecByte();
IIC_SendAck(1);
IIC_Stop();
return temp;
}//保存当前数据
void Save_To_24C02(void)
{
Write_AT24C02(0x01,grade);
SMG_Display_V();
Write_AT24C02(0x02,volt);
SMG_Display_V();
}//读取历史数据
void Read_From_24c02(void)
{
old_grade = Read_AT24C02(0x01);
delay(500);
old_volt = Read_AT24C02(0x02);
delay(500);
grade = old_grade;
volt= old_volt;
}
//按键处理
void Key_Scans(void)
{
if(S4 == 0)
{
delay(20);
if(S4 == 0)
{
Save_To_24C02();
while(S4 == 0)
{
Led_Working();
}}
} if(S5 == 0)
{
delay(20);
if(S5 == 0)
{
//关闭所有灯光
led_stat = 0xff;
P0 = led_stat;
Init_74HC138(4);
//读取数据
Read_From_24c02();
while(S5 == 0)
{
SMG_Display_V();
}}
}
}
//系统初始化
void Init_System(void)
{
P0 = 0xff;
Init_74HC138(4);
P0 = 0x00;
Init_74HC138(5);
SMG_All(0xff);
}//主函数
void main(void)
{
Init_System();
while(1)
{
Led_Working();
Key_Scans();
}}
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