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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: pressure.h
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* Description: head file of pressure.c used to output and display pressure
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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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#ifndef __pressure_H
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#define __pressure_H
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#include "sys.h"
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//85-500A-4R: span@1.5mA:100mV == 500Psi == 34.48Bar =>2.9mv == 1bar
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//85-300A-4R
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#define minvol 26 //10bar = 26mv(decide by the type of pressure sensor)
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#define op 50 //magnification of sampling the voltage
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#define PRESSURE_ERROR_DATA 800
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float get_pressure(void);
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float Get_kb_pressure(float pre_vol);
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#endif
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