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/******************************************************************************
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* Copyright (C) 2014-2015 HangZhou SiZhu Co.,LTD.
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*
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*-----------------------------------------------------------------------------
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* File: temperature.c
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* Description: get temperature of now
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* Author: Lishoujian (867693272@qq.com)
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* Date: Jan 8, 2015
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*****************************************************************************/
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/* ----------------------- Platform includes --------------------------------*/
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#include "temperature.h"
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#include "adc.h"
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#include "para.h"
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#include "devicegpioinit.h"
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#include "regdefine.h"
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#include "ads1120.h"
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float Get_temperature_v(float tep_vol);// 100 =>10.0 ¡æ
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#define AD_REF_VOL 3000
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#define RES_VALUE 100
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#define VOL_OFFSET 42
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#define AD_TEMPERATURE_CH 11
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#define AD_CNT 40
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#define Inputvol 3000
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#define TEM_AD_MIN_DATA 500
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#define TEM_AD_MAX_DATA 3500
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/******************************************
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* func: Get_temperature_volt
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* desc: get average voltage from temperature sensor.
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* input:
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* output: none
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* return: average voltage:eg 1000 means voltage equal to 1.000v
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*****************************************/
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float get_temperature(void)
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{
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// uint16 volt_ret;
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float vol;
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float tep;
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vol = temperature_ad_value();//·µ»ØµÄÊÇVΪµ¥Î»
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if((vol > 0.2)||(vol < 0.006))
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{
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return TEMP_ERROR_DATA;
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}else
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{
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tep = Get_temperature_v(vol);
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}
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return tep;
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}
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/******************************************
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* func: Get_temperature
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* desc: transform the voltage of sampling to temperature
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* input: tep_vol - the voltage of sampling
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* output: none
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* return: tep - (temperature * 10) of now
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*****************************************/
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float Get_temperature_v(float tep_vol)// 100 =>10.0 ¡æ
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{
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float tep; //resistance of PT1000,temperature
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//µ÷ÕûζÈÊý¾Ý
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tep = (float)tep_vol * system_para_control_run_g.temperature_para_k;
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tep = tep + system_para_control_run_g.temperature_para_b;
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return ( tep);
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}
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