基于单片机K型热电偶温度采集报警系统-学习分享

968基于单片机K型热电偶温度采集报警系统-学习分享

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#include <reg51.h>
#include <Intrins.h>
#include <LCD1602.H>
#include <math.H>

#define C02_write	0xa0            /* c02写地址 */
#define C02_read	0xa1            /* c02读地址 */
#define uchar		unsigned char
#define uint		unsigned int

sbit	MAX6675_CS	= P1 ^ 2;       /* MAX6675冷端温度补偿，将K型热电偶信号转为数字信号 */
sbit	MAX6675_SCK	= P1 ^ 1;
sbit	MAX6675_SO	= P1 ^ 0;
sbit	normal		= P2 ^ 3;       /* LED灯表示温度正常，过高，过低 */
sbit	upper		= P2 ^ 4;
sbit	lower		= P2 ^ 5;
sbit	direction	= P2 ^ 6;
sbit	stop		= P2 ^ 7;
sbit	SCL		= P1 ^ 3;       /* EEPROM，256byte */
sbit	SDA		= P1 ^ 4;
sbit	beep		= P1 ^ 7;       /* 蜂鸣器 */
bit	ack, flag = 0, flag1 = 0;

uint			tz;
int			sth	= 0, stl = 0, t_zhi = 0;
uchar data		temp1[] = { '+', '1', '5', '0', '0', 0 }, temp2[] = { '-', '1', '0', '0', '0', 0 };
uchar data		temp[7];
char code		keytab[] = { 0xEE, 0xDE, 0xBE, 0x7E, 0xED, 0xDD, 0xBD, 0x7D, 0xEB, 0xDB, 0xBB, 0x7B, 0xE7, 0xD7, 0xB7, 0x77 };
unsigned char code	str1[] = { "STH      STL" };    /* system temperature high,low */
unsigned char code	str2[] = { "PARAMTER STEUP" };
unsigned char code	str3[] = { "              " };
unsigned int		testD2;

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