MLX90614测温在1602显示

【实例截图】

【核心代码】

#include "sys.h"
#include "LCD.h"
#include "stdio.h" 
#include "intrins.h" 
#include "string.h"
#include "SMBus_CM.h"				      //Include SMBus_CM.h (Contain Start, Stop, Send, Receive etc.)
#include "SMBus_OP.h"				      //Include SMBus_OP.h (Contain Read data from MLX90614 and Write data into MLX90614)
#include "CalTem.h"				      //Include CalTem.h(For calculating Temperature based on Hex data)
#include "Delay.h"  

bit busy;

sbit BEEP=P2^6;
//  LCD_DB P0   RS=P1^0;	RW=P1^1;	LCDE=P1^2;	sbit SDA = P1^3;  SCL = P1^4;



void main()
{
	unsigned char idata slaveaddress,i;	 			  
	unsigned int idata DATA;
	unsigned char idata mahm[6];
	float idata temprater;
	unsigned char idata disnow[6];
	
	_SCL_IO
	_SDA_OUTPUT
	
	SCL=0;				        
	Delay(1200);				//SMBus request，Switch PWM mode to SMBus mode(at least 2ms)
	SCL=1;
	
	LCD_init();
	LCD_ShowString(0,0,"  Hello World");   //开机画面
	
	
	LDelay(100);
	
	LCD_ShowString(0,0,"Temp:EXT    INT");
	
	
	
	BEEP=0;
  while(1)
  {
	// 读目标温度			 
	     	slaveaddress = MEM_READ(0x00,0x2E);
		    temprater = 0 ;
			for(i=0;i<10;i  )
			{
		   	 	DATA=MEM_READ(slaveaddress,0x07);			    //Read Object Temperature from MLX90614 RAM 07h
				
		  	 	temprater =  temprater   CALTEMP(DATA);				            //Calculate the Temperature based on Hex code
			}	
			temprater = temprater / 10;
	  	 	while(busy);
			  for(i=0;i<6;i  )
				mahm[i] = 0x20;
		   	Float_To_Str(temprater,mahm,2);
			
			for(i=0;i<5;i  )
				disnow[i]=mahm[i];
			
			LCD_ShowString(4,1,disnow);
			
			if(temprater>37)
				BEEP=1;
			else
				BEEP=0;
			
	// 读环境温度
		    temprater = 0 ;
			for(i=0;i<10;i  )
			{
		   	 	DATA=MEM_READ(slaveaddress,0x06);			    //Read Object Temperature from MLX90614 RAM 07h
				
		  	 	temprater =  temprater   CALTEMP(DATA);				            //Calculate the Temperature based on Hex code
			}	
			temprater = temprater / 10;

	  	 	while(busy);
			  for(i=0;i<6;i  )
				mahm[i] = 0x20;
		   	Float_To_Str(temprater,mahm,2);
			
				for(i=0;i<5;i  )
				disnow[i]=mahm[i];
			
			LCD_ShowString(11,1,disnow);
			
			LDelay(10);			 //SMBus request，Switch PWM mode to SMBus mode(at least 2ms)
  }
}