本帖最后由 lihw2@ 于 2012-9-21 10:57 编辑
做一个温度计 用到了ntc 在网上找到了一个ntc热电阻计算软件还不错。
#include <USART.h>
#include<intrins.h>
#include "adc.h"
#define uchar unsigned char
#define uint unsigned int
#define u32 unsigned long int
uint code AD_Result[131] = {
982,980,978,976,974,0x3CB,0x3C9,0x3C6,0x3C4,0x3C1,
0x3BE,0x3BB,0x3B8,0x3B5,0x3B2,0x3AE,0x3AB,0x3A7,0x3A4,0x3A0,
0x39C,0x398,0x394,0x390,0x38C,0x387,0x383,0x37E,0x37A,0x375,
0x370,0x36B,0x366,0x360,0x35B,0x355,0x350,0x34A,0x344,0x33E,
0x338,0x332,0x32C,0x326,0x31F,0x319,0x312,0x30B,0x305,0x2FE,
0x2F7,0x2F0,0x2E9,0x2E2,0x2DB,0x2D3,0x2CC,0x2C5,0x2BD,0x2B6,
0x2AE,0x2A7,0x29F,0x298,0x290,0x288,0x281,0x279,0x271,0x269,
0x262,0x25A,0x252,0x24B,0x243,0x23B,0x234,0x22C,0x224,0x21D,
0x215,0x20E,0x206,0x1FF,0x1F7,0x1F0,0x1E9,0x1E2,0x1DA,0x1D3,
0x1CC,0x1C5,0x1BE,0x1B7,0x1B0,0x1AA,0x1A3,0x19C,0x196,0x18F,
0x189,0x183,0x17C,0x176,0x170,0x16A,0x164,0x15E,0x158,0x153,
0x14D,0x147,0x142,0x13D,0x137,0x132,0x12D,0x128,0x123,0x11E,
0x119,0x114,0x10F,0x10B,0x106,0x102,0xFD,0xF9,245,241,
0xED
};
char code Temp_Value[131] = {
-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
0,1,2,3,4,5,6,7,8,9,
10,11,12,13,14,15,16,17,18,19,
20,21,22,23,24,25,26,27,28,29,
30,31,32,33,34,35,36,37,38,39,
40,41,42,43,44,45,46,47,48,49,
50,51,52,53,54,55,56,57,58,59,
60,61,62,63,64,65,66,67,68,69,
70,71,72,73,74,75,76,77,78,79,
80,81,82,83,84,85,86,87,88,89,
90,91,92,93,94,95,96,97,98,99,
100,101,102,103,104,105,106,107,108,109,
110,111,112,113,114,115,116,117,118,119,
120
};
uint next;
uint temp[11];
uint volat[11];
int tempx;
uint volatx;
int tempy;
uint volaty;
char code dx516[3] _at_ 0x00ff;
void tempcl();
void volatcl();
uint temcha(uint dat);
void t0() interrupt 1 //计数器0.计时
{
TR0=0;
TH0=(65535-59090)/256;
TL0=(65535-59090)%256; //重装计时值
if(next<10)
{
temp[next]=adc_dat(0);
}
if((next>=10)&&(next<20))
{
volat[next-10]=adc_dat(4);
}
next++;
if(next==12)
{
tempcl();
}
if(next==22)
{
volatcl();
next=0;
}
WDT_CONTR=0x3b;
TR0=1;
}
//*******************************主函数******************************/
main() //主函数
{
float vv;
P0M0=0XFF;
P1M1=0XFF;
UartInit();
adc_pwon();
//START_HT1621();
SETUP_HT1621();
TMOD &= 0XF0;
TMOD |= 0X01; //
TH0=(65535-60000)/256;
TL0=(65535-60000)%256;
TR0=1; //定时器0 启动
ET0=1; //定时器0中断允许
while(1)
{
vv = 196.0/1024.0;
tempy=temcha(tempx);
// volaty = volatx*(150/1024);
volaty = volatx*vv;
display(tempy,volaty);
//全显示
}
}
uint temcha(uint dat)
{ uchar j;
for (j=0;j<130;j++)
{
if( (dat<=AD_Result[j]) && (dat>AD_Result[j+1]) )
{
break;
}
}
return(Temp_Value[j] );
}
void tempcl()
{
uchar i,j;
uint tem;
for (j=0;j<9;j++)
{
for (i=j;i<9;i++)
{
if(temp[j]>temp[i+1])
{
tem = temp[j];
temp[j] = temp[i+1];
temp[i+1] = tem;
}
}
}
tempx = (temp[2]+temp[3]+temp[4]+temp[5]+temp[6]+temp[7])/6;
}
void volatcl()
{
uchar i,j;
uint tem;
for (j=0;j<5;j++)
{
for (i=0;i<5;i++)
{
if ( volat[0]>volat[i+1] )
{
tem = volat[0];
volat[0] = volat[i+1];
volat[i+1] = tem;
}
}
}
volatx = (volat[2]+volat[3]+volat[4]+volat[5]+volat[6]+volat[7])/6;
SendDec(volatx);
}
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发表于 2012-9-21 10:37:13
楼主
