STC15W408AS单片机+MAX6675+TM1637,K型热电偶测温程序

ID:562627 · 发表于 2021-1-4 14:58

制作出来的实物图如下：

单片机源程序如下:

#include "stc15.h" //reg51.h
#include "intrins.h"
#include "TM1637.h"
typedef unsigned char u8;
typedef unsigned int u16;
sbit SO = P3^6;
sbit SCK = P1^0;
sbit CS = P3^7;
/*------定义驱动数码管的片选表和断码表---------------*/
/***************************数码管段选表*************************/
unsigned char code SEGData[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x73,0x40,0x00,0x39};
// 0 1 2 3 4 5 6 7 8 9 P - 灭 C
unsigned char code SEGDataDp[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};
//有小数点只用于地址0xc1
u16 temp,temp_1,t;
u8 Flag_connect;
bit flag;
/******************定时器相关程序**********************/
void time2_init(void) //定时器2初始化
{
AUXR |= 0x04; //使用模式1，16位定时器，使用"|"符号可以在使用多个定时器时不受影响
T2L = 0xCD; //设置定时初值
T2H = 0xD4; //设置定时初值
AUXR |= 0x10; //定时器2开始计时
IE2 |= 0x04; //开定时器2中断
}
void timer2 (void) interrupt 12 //Timer2 1ms中断函数
{
static u16 num;
T2L = 0xCD; //设置定时初值
T2H = 0xD4; //设置定时初值
num++;
if(num==170)
{
num=0;
flag =1;
}
}
void display( void )
{
if(Flag_connect==0) //Flag_connect为0 表示热电偶已连接，这时显示温度
{
TM1637_writeCammand(0x44);
TM1637_writeData(0xc3, SEGData[temp%10]);
TM1637_writeData(0xc2, SEGData[temp%100/10]);
TM1637_writeData(0xc1, SEGData[temp%1000/100]);
TM1637_writeData(0xc0, SEGData[temp/1000]);
TM1637_writeCammand(0x8f);
}
else
{
TM1637_writeCammand(0x44);
TM1637_writeData(0xc0, SEGData[16]);
TM1637_writeData(0xc1, SEGData[16]);
TM1637_writeData(0xc2, SEGData[16]);
TM1637_writeData(0xc3, SEGData[16]);
TM1637_writeCammand(0x8f);
}
}