今天距离比赛还有9天，想到了之前第十二届第一批做的乱七八糟，现在重新写一遍，果然是当初太笨了，现在再看感觉简单的不行，差不多两个小时就写完了，真的没什么特别难的地方，就是矩阵键盘那里需要注意。
先看原题
MAIN.C
#include<reg51.h>
#include<iic.h>
#include<onewire.h>
#define uchar unsigned char
#define uint unsigned int
sbit DQ = P1^4;
//总线引脚定义
sbit SDA = P2^1; /* 数据线 */
sbit SCL = P2^0; /* 时钟线 */
sbit R1=P3^0;//第一排初始化（如果跳线帽模式是BTN，则只有最左侧一列能用）
sbit R2=P3^1;//第二排初始化
sbit R3=P3^2;//第三排初始化
sbit R4=P3^3;//第四排初始化
sbit C1=P4^4;//第一列初始化
sbit C2=P4^2;//第二列初始化
sbit C3=P3^5;//第三列初始化
sbit C4=P3^4;//第四列初始化
0 1 2 3 4 5 6 7 8 9 - 全灭 .
unsigned char code shuzi[]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0xbf,0xff,0x7f};
/// A b C d E F H L P U n
unsigned char code zimu[]={0x88,0x83,0xc6,0xa1,0x86,0x8e,0x89,0xc7,0x8c,0xc1,0xc8};
0 1 2 3 4 5 6 7
unsigned char code weizhi[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x00,0x00,0x00};
// 1 2 3 4 5 6 7 8 灭
unsigned char ledweizhi[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xff};
//温度变量定义
int temp;
uchar shi;
uchar ge;
uchar shi_p;
uchar ge_p;
int temp2;
//参数设置
uchar temp_cs=25;
//s5模式切换数值
uchar mode_dac=0;
//dac的输出数值
int voltage;
int dat;
void Scan_S8();
void Scan_S9();
void Scan_S5();
void judge_dac();
//延时1ms
void delay_ms(int ms)
{
int q,w;
for(q = 0;q<ms;q++){
for(w=845;w>0;w--);
}
}
///数码管数字显示
void shumaguan_shuzi(uchar a,uchar b)
{
delay_ms(1);
P2=(P2&0X1f)|0xC0;P0=weizhi[a];
P2=(P2&0X1f)|0xE0;P0=shuzi[b];
delay_ms(1);
}
//数码管字母显示
void shumaguan_zimu(uchar a,uchar b)
{
delay_ms(1);
P2=(P2&0X1f)|0xC0;P0=weizhi[a];
P2=(P2&0X1f)|0xE0;P0=zimu[b];
delay_ms(1);
}
void ledlight(uchar x)
{
P2=(P2&0X1f)|0x80;
P0=ledweizhi[x];
}
void Init_Keys()
{
R1=R2=R3=R4=1;
C1=C2=C3=C4=1;
}
//DS18B20的配置
void temperature_get()
{
uchar high,low;
init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0x44);
init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0xbe);
low=Read_DS18B20();
high=Read_DS18B20();
temp=((high<<4)|(low>>4));//不带小数点，注掉后面一行就行
temp2=low&0x0f*100/16;//取小数点两位,注掉上面一行就行
shi=temp%100/10;
ge=temp%10;
shi_p=temp2/10;
ge_p=temp%10;
}
void pcf8591_dac(char dat)//dac读取数值
{
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x40);
IIC_WaitAck();
IIC_SendByte(dat);
IIC_WaitAck();
IIC_Stop();
}
void display_temp()
{
shumaguan_zimu(0,2);
shumaguan_shuzi(4,shi);
shumaguan_shuzi(5,ge);
shumaguan_shuzi(6,shi_p);
shumaguan_shuzi(5,12);
shumaguan_shuzi(7,ge_p);
ledlight(1);
}
void display_cs()
{
ledlight(2);
shumaguan_zimu(0,8);
shumaguan_shuzi(6,temp_cs/10);
shumaguan_shuzi(7,temp_cs%10);
Scan_S9();
Scan_S8();
}
void display_dacnum()
{
judge_dac();
if(mode_dac==0)
{
shumaguan_zimu(0,0);
shumaguan_shuzi(5,voltage);
shumaguan_shuzi(5,12);
shumaguan_shuzi(6,0);
shumaguan_shuzi(7,0);
P2=0x80;
P0=0xf6;
}
if(mode_dac==1)
{
shumaguan_zimu(0,0);
shumaguan_shuzi(5,voltage/100);
shumaguan_shuzi(5,12);
shumaguan_shuzi(6,voltage%100/10);
shumaguan_shuzi(7,voltage%10);
ledlight(3);
}
}
void judge_dac()
{
if(mode_dac==0)
{
temperature_get();
if(temp>temp_cs)
{
voltage=5;
pcf8591_dac(0xff);
}
if(temp<temp_cs)
{
voltage=0;
pcf8591_dac(0x00);
}
}
if(mode_dac==1)
{
temperature_get();
if(temp<=20)
{
voltage=1;
}
if(temp>20&&temp<40)
{
voltage=0.15*temp*100;
if(voltage>=400) voltage=400;
if(voltage<=200) voltage=200;
}
if(temp>=40)
{
voltage=4;
}
}
}
void Scan_S4()
{
R4=0;R3=1;
if(C1==0)
{
while(C1==0)display_temp();
while(1)
{
judge_dac();
display_cs();
R4=0;R3=1;
if(C1==0)
{
while(C1==0)display_dacnum();
while(1)
{
Scan_S5();
R4=0;R3=1;
if(C1==0)
{
while(C1==0) display_temp();
while(1)
{
ledlight(3);
temperature_get();
judge_dac();
display_temp();
Scan_S4();
}
}
}
}
}
}
}
void Scan_S8()
{
R4=0;R3=1;
if(C2==0&&R4==0)
{
while(C2==0&&R4==0);
temp_cs--;
}
}
void Scan_S9()
{
R3=0;R4=1;
if(C2==0&&R3==0)
{
while(C2==0&&R3==0);
temp_cs++;
}
}
void Scan_S5()
{
uchar temp=4;
R3=0;R4=1;
if(C1==0&&R3==0)
{
while(C1==0&&R3==0);
temp++;
}
if(temp%2==0)
{
mode_dac=0;
judge_dac();
display_dacnum();
}
if(temp%2==1)
{
while(1)
{
mode_dac=1;
judge_dac();
display_dacnum();
if(C1==0&&R3==0)
{
while(C1==0&&R3==0);
break;
}
}
}
}
void main()
{
while(1)
{
Init_Keys();
Scan_S4();
judge_dac();
temperature_get();
display_temp();
}
}
过几天看看第九届吧，之前我看了第七届，PWM波那里给我看傻了，还不如先做第九届。