global_var.c

温度仪表软件

#include "my_type.h"   

//应答信号
extern bit  iic_ack = 0;

//共阳LED段码表,从0到9，从0.到9.,空,负号,P,H,L,共25个

extern uchar code led[25]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x40,0x79,0x24,
                    0x30,0x19,0x12,0x02,0x78,0x00,0x10,0xff,0xbf,0x8c,0x89,0xc7};
extern uchar code led1[14]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf,0x8c,0x89,0xc7};

//显示数组
extern uchar disp[4];

/*PT100分度表*/
//分度内的斜率
extern float code pt100_K[]={0.002324295,0.002520837,0.002534951,0.002549129,0.002569917,0.002403939,
				      0.00256748,0.002581778,0.002596142,0.002610572,0.002631894,0.002646493,
					  0.002661159,0.002675892,0.002690695,0.002705566,0.002727713};	  //转换斜率17个

//分度起点温度 
extern uint code pt100_AD[]={0,4302,8269,12214,16137,20028,24188,28083,31956,35808,39639,43438,47217,
						50975,54712,58428,62124};	  //AD7705转换数值的查询表17个数

//浮点共用体,采集到的温度值
extern float ad_temp ;
extern int set_high=0,set_low=0,set_rtc=0;

extern unsigned char num0=0,num1=0,num2=0,num3=0,flag=0;
extern unsigned int	ad_num=0;
extern code uchar *read_rtc_code=0;

extern uchar sl[3];
extern uchar sh[3];


extern uchar rdtime[2]={0,0};
extern uchar wrtime[2]={0,0};
extern uchar aa[2]={0,0};
//extern uchar reg_ds1307;


//extern uchar s[3];