/******************************************************************************
 * Copyright (C) 2014-2015 HangZhou SiZhu Co.,LTD.
 *
 *-----------------------------------------------------------------------------
 * File: 			    temperature.c
 * Description:		get temperature of now
 * Author:			  Lishoujian (867693272@qq.com)
 * Date:			    Jan 8, 2015
 *****************************************************************************/

/* ----------------------- Platform includes --------------------------------*/
#include "temperature.h"
#include "adc.h"
#include "para.h"
#include "devicegpioinit.h"
#include "regdefine.h"
#include "ads1120.h"


float Get_temperature_v(float tep_vol);// 100 =>10.0 ¡æ
#define	AD_REF_VOL					3000
#define	RES_VALUE					100
#define	VOL_OFFSET					42
#define	AD_TEMPERATURE_CH		11
#define	AD_CNT						  40
#define Inputvol            3000
#define	TEM_AD_MIN_DATA				500
#define	TEM_AD_MAX_DATA				3500


/******************************************
 * func:    Get_temperature_volt
 * desc:    get average voltage from temperature sensor.
 * input:   
 * output:  none
 * return:  average voltage:eg 1000 means voltage equal to 1.000v
 *****************************************/
float get_temperature(void)  
{ 
//	uint16	volt_ret;
	float	vol;
	float	tep;	

	
	
	vol = temperature_ad_value();//·µ»ØµÄÊÇVΪµ¥Î»
	
	if((vol > 0.2)||(vol < 0.006))
	{
		return	TEMP_ERROR_DATA;
	}else 
	{
		tep = Get_temperature_v(vol);
	}

	
	return tep;
	
} 

/******************************************
 * func:    Get_temperature
 * desc:    transform the voltage of sampling to temperature
 * input:   tep_vol - the voltage of sampling 
 * output:  none
 * return:  tep - (temperature * 10) of now
 *****************************************/
 
float Get_temperature_v(float tep_vol)// 100 =>10.0 ¡æ
{                         
	float tep;                                  //resistance of PT1000,temperature
  
	//µ÷ÕûζÈÊý¾Ý
	tep = (float)tep_vol * system_para_control_run_g.temperature_para_k;
	tep = tep + system_para_control_run_g.temperature_para_b;


	return ( tep);
}