adc0_temp.c

C8051F340开发板开发的通过调试片内温度传感器

//内部温度传感器调试程序//
//ADC0_TEMP.c
#include "C8051F340.h"

typedef unsigned int uint;
typedef unsigned char uchar;
typedef unsigned long ulong;
uchar temppage;
uint kk;
float temp;
data float t[20];//存放温度检测数据，为20个数据

// Peripheral specific initialization functions,
// Called from the Init_Device() function

void adc0_ini(){

   REF0CN = 0x07;                     
   AMX0P = 0x1E;                       
   AMX0N = 0x1F;                       
   ADC0CF  = 0x78;                     
   ADC0CN  = 0x80;                    
                                       
   EIE1   |= 0x08;                     
}

void PCA_Init()
{
    PCA0MD    &= ~0x40;
}

void Port_IO_Init()
{
       //P2MDIN    = 0xDF;
       //P2SKIP    = 0x20;
       XBR1      = 0x40;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{   
    PCA_Init();
    Port_IO_Init();
    adc0_ini();
}

void main(){
	char i;
  	Init_Device();
	EA=1;
	AD0BUSY=1;
	i=0;
	while(1){
		if(AD0INT){//由该位查询ADC0转化值是否更新
			AD0INT=0;
			kk=ADC0H*256;
			kk+=ADC0L;//可用sfr16一次性读取
			temp=(float)kk/1024;
			temp*=2.40;
			temp-=0.776;
			temp/=0.00286;//将测量值转化成真实温度值
			t[i]=temp;//将温度检测值存入长度为20的数组中
			i++;
			if(i>19)
				i=0;
			AD0BUSY=1;
		}
	}
}