蓝桥杯单片机学习过程记录（二十六）第七届国赛电压、频率采集设备
N555方波这部分没写，准备重新理解一下，其余部分都已经完成，遇到了两个问题，一是时钟芯片，调整时，记得调整完后重新初始化一下，二是采集电压波动时，由正常到高，有正常到低时的判断频率调整一下。
应用的内容：
数码管、矩阵按键、
IIC_Rb2电压采集
EEPROM的写入读取
DS1302时钟芯片
定时器
/*
--------------------------------
第七届频率电压采集
频率没写，其余部分写完。
2020.3.8
--------------------------------
*/
#include<STC15F2K60S2.H>
#include<ds1302.h>
#include<iic.h>
char s11_count_h,s11_count_m,s11_count_s,count_h,count_m;
unsigned int time0_t,dianya,dianya_h,dianya_m,dianya_temp;
unsigned char flag_yemian,flag_time0,s4_count,dianya_count;
unsigned char seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf,0xff};
unsigned char yi,er,san,si,wu,liu,qi,ba;
unsigned char time_init[]={55,59,23,0,0,0,0};
unsigned char time_read[7];
void delayms(int ms);
void display_12(yi,er);
void display_34(san,si);
void display_56(wu,liu);
void display_78(qi,ba);
void allinit();
void key_scan();
void ds1302_init();
void ds1302_read();
void Timer0Init(void);
unsigned char iic_rb2_read();
void eeprom_write(unsigned char add,unsigned char dat);
unsigned char eeprom_read(unsigned char add);
void dianya_pd();
void main(){
allinit();
ds1302_init();
Timer0Init();EA=1;ET0=1;
while(1){
//eeprom上下限读取
dianya_h=eeprom_read(0x01);dianya_h=dianya_h+count_h;
dianya_m=eeprom_read(0x02);dianya_m=dianya_m+count_m;
//电压读取Rb2及转换
dianya=iic_rb2_read()*1.96;
//时钟读取及设置
ds1302_read();
time_read[2]=(time_read[2]+s11_count_h)%24;
time_read[1]=(time_read[1]+s11_count_m)%60;
time_read[0]=(time_read[0]+s11_count_s)%60;
//时钟显示界面
if(flag_yemian==0){
//时闪烁
if(s4_count==1 & flag_time0==1){
yi=11;er=11;san=10;si=time_read[1]/10;wu=time_read[1]%10;liu=10;qi=time_read[0]/10;ba=time_read[0]%10;
}
//分闪烁
else if(s4_count==2& flag_time0==1){
yi=time_read[2]/10;er=time_read[2]%10;san=10;si=11;wu=11;liu=10;qi=time_read[0]/10;ba=time_read[0]%10;
}
//秒闪烁
else if(s4_count==3& flag_time0==1){
yi=time_read[2]/10;er=time_read[2]%10;san=10;si=time_read[1]/10;wu=time_read[1]%10;liu=10;qi=11;ba=11;
}
//正常显示
else {
yi=time_read[2]/10;er=time_read[2]%10;san=10;si=time_read[1]/10;wu=time_read[1]%10;liu=10;qi=time_read[0]/10;ba=time_read[0]%10;
}
}
//电压测量界面
else if(flag_yemian==1){
//上限闪烁
if(s4_count==1&flag_time0==1){
yi=11;er=11;san=11;si=11;wu=dianya_m/10;liu=dianya_m%10;qi=0;ba=0;
}
//下限闪烁
else if(s4_count==2&flag_time0==1){
yi=dianya_h/10;er=dianya_h%10;san=0;si=0;wu=11;liu=11;qi=11;ba=11;
}
//显示当前电压
else if(s4_count==0){
yi=10;er=1;san=10;si=11;wu=dianya/100;liu=dianya%100/10;qi=dianya%10;ba=0;
}
//显示正常上下限
else{
yi=dianya_h/10;er=dianya_h%10;san=0;si=0;wu=dianya_m/10;liu=dianya_m%10;qi=0;ba=0;
}
}
//频率测量界面
else if(flag_yemian==2){
yi=10;er=2;san=10;si=0;wu=1;liu=0;qi=0;ba=0;
}
//查询界面
else if(flag_yemian==3){
//显示类型
if(s4_count==0){
yi=11;er=11;san=11;si=11;wu=11;liu=11;qi=0;ba=eeprom_read(0x03);
}
//显示波动时间
else if(s4_count==1){
yi=eeprom_read(0x04)/10;er=eeprom_read(0x04)%10;san=10;si=eeprom_read(0x05)/10;wu=eeprom_read(0x05)%10;
liu=10;qi=eeprom_read(0x06)/10;ba=eeprom_read(0x06)%10;
}
}
//每50进行一次判断，电压是否记录
if(dianya_count==50){
dianya_count=0;
dianya_pd();
dianya_temp=dianya;
}
dianya_count++;
key_scan();
display_12(yi,er);
display_34(san,si);
display_56(wu,liu);
display_78(qi,ba);
}
}
//矩阵按键
void key_scan(){
unsigned char temp;
P44=0;P42=1;P3=0XFF;
temp=P3;temp=temp&0x0f;
if(temp!=0x0f){
delayms(5);
temp=P3;temp=temp&0x0f;
if(temp!=0x0f){
temp=P3;
switch(temp){
//切换时钟测量
case 0xfe:
if(flag_yemian!=0){
s4_count=0;
flag_yemian=0;
}
//完成时钟设置后将时钟初始化
else if(flag_yemian==0){
s4_count=0;
flag_yemian=0;
time_init[0]=time_read[0];
time_init[1]=time_read[1];
time_init[2]=time_read[2];
ds1302_init();
s11_count_h=0;s11_count_m=0;s11_count_s=0;
}
break;
//切换电压测量
case 0xfd:
flag_yemian=1;
s4_count=0;
break;
//切换频率测量
case 0xfb:
s4_count=0;
flag_yemian=2;
break;
//功能设置
case 0xf7:
//时钟界面设置
if(flag_yemian==0){
s4_count++;
if(s4_count==4)
s4_count=1;
}
//电压页面设置
else if(flag_yemian==1){
s4_count++;
if(s4_count==3){
s4_count=1;
eeprom_write(0x01,dianya_h+count_m);delayms(10);
eeprom_write(0x02,dianya_m+count_m);delayms(10);
count_h=0;count_m=0;
}
}
//记录页面设置
else if(flag_yemian==3){
s4_count++;
if(s4_count==2){
s4_count=0;
}
}
break;
}
while(temp!=0x0f){
temp=P3;temp=temp&0x0f;
}
}
}
P44=1;P42=0;P3=0XFF;
temp=P3;temp=temp&0x0f;
if(temp!=0x0f){
temp=P3;temp=temp&0x0f;
if(temp!=0x0f){
temp=P3;
switch(temp){
//加
case 0xfe:
if(flag_yemian==0){
if(s4_count==1)s11_count_h++;
else if(s4_count==2)s11_count_m++;
else if(s4_count==3)s11_count_s++;
}
else if(flag_yemian==1){
if(s4_count==1)count_h=count_h+5;
else if(s4_count==2)count_m=count_m+5;
}
break;
//减
case 0xfd:
if(flag_yemian==0){
if(s4_count==1)s11_count_h--;
else if(s4_count==2)s11_count_m--;
else if(s4_count==3)s11_count_s--;
if(s11_count_h<0)s11_count_h=s11_count_h+24;
if(s11_count_m<0)s11_count_m=s11_count_m+60;
if(s11_count_s<0)s11_count_s=s11_count_s+60;
}
else if(flag_yemian==1){
if(s4_count==1)count_h=count_h-5;
else if(s4_count==2)count_m=count_m-5;
}
break;
//查询功能
case 0xfb:
s4_count=0;
flag_yemian=3;
break;
}
while(temp!=0x0f){
temp=P3;temp=temp&0x0f;
}
}
}
}
//电压判断
void dianya_pd(){
if(dianya_temp>dianya_m*10){
if(dianya_temp<dianya_h*10){
//当从正常进入高电压时，记录
if(dianya>dianya_h*10){
eeprom_write(0x03,1);delayms(5);
eeprom_write(0x04,time_read[2]);delayms(5);
eeprom_write(0x05,time_read[1]);delayms(5);
eeprom_write(0x06,time_read[0]);delayms(5);
}
//当从正常进入低电压时，记录
else if(dianya<dianya_m*10){
eeprom_write(0x03,0);delayms(5);
eeprom_write(0x04,time_read[2]);delayms(5);
eeprom_write(0x05,time_read[1]);delayms(5);
eeprom_write(0x06,time_read[0]);delayms(5);
}
}
}
}
//eeprom获取
unsigned char eeprom_read(unsigned char add){
unsigned char temp;
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(add);
IIC_WaitAck();
IIC_Stop();
IIC_Start();
IIC_SendByte(0xa1);
IIC_WaitAck();
temp=IIC_RecByte();
IIC_Stop();
return temp;
}
//eeprom写入
void eeprom_write(unsigned char add,unsigned char dat){
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(add);
IIC_WaitAck();
IIC_SendByte(dat);
IIC_WaitAck();
IIC_Stop();
}
//rb2获取
unsigned char iic_rb2_read(){
unsigned char temp;
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x03);
IIC_WaitAck();
IIC_Stop();
IIC_Start();
IIC_SendByte(0x91);
IIC_WaitAck();
temp=IIC_RecByte();
IIC_Stop();
return temp;
}
//定时器0功能
void time0() interrupt 1{
time0_t++;
if(time0_t==200){
flag_time0=1;
}
else if(time0_t==400){
time0_t=0;
flag_time0=0;
}
}
//定时器0初始化
void Timer0Init(void)
{
AUXR |= 0x80;
TMOD &= 0xF0;
TL0 = 0x00;
TH0 = 0x28;
TF0 = 0;
TR0 = 1;
}
//时钟初始化
void ds1302_init(){
unsigned char i,add=0x80;
Write_Ds1302_Byte(0x8e,0x00);
for(i=0;i<7;i++){
Write_Ds1302_Byte(add,time_init[i]);
add=add+2;
}
Write_Ds1302_Byte(add,0x80);
}
//时钟读取
void ds1302_read(){
unsigned char i,add=0x81;
Write_Ds1302_Byte(0x8e,0x00);
for(i=0;i<7;i++){
time_read[i]=Read_Ds1302_Byte(add);
add=add+2;
}
Write_Ds1302_Byte(add,0x80);
}
//上电初始化
void allinit(){
P2=0XA0;P0=0X00;
P2=0X80;P0=0XFF;
P2=0XC0;P0=0XFF;P2=0XE0;P0=0XFF;
}
//延时
void delayms(int ms){
int q,w;
for(q=0;q<ms;q++)
for(w=0;w<845;w++);
}
//数码管
void display_12(yi,er){
P2=0XC0;P0=0X01;P2=0XE0;P0=seg[yi];delayms(1);
P2=0XC0;P0=0X02;P2=0XE0;P0=seg[er];delayms(1);
}
void display_34(san,si){
P2=0XC0;P0=0X04;P2=0XE0;P0=seg[san];delayms(1);
P2=0XC0;P0=0X08;P2=0XE0;P0=seg[si];delayms(1);
}
void display_56(wu,liu){
P2=0XC0;P0=0X10;P2=0XE0;P0=seg[wu];delayms(1);
P2=0XC0;P0=0X20;P2=0XE0;P0=seg[liu];delayms(1);
}
void display_78(qi,ba){
P2=0XC0;P0=0X40;P2=0XE0;P0=seg[qi];delayms(1);
P2=0XC0;P0=0X80;P2=0XE0;P0=seg[ba];delayms(1);
P2=0XC0;P0=0XFF;P2=0XE0;P0=0XFF;delayms(1);
}
来源：CSDN
作者：爆炒小肥牛
链接：https://blog.csdn.net/weixin_44747240/article/details/104738345