#include "gas_sensor.h"
#include "math_tools.h"

uint16_t GasSensor_OffSet = 0;

#define ZeroOffSetData 100

//指拨零点值初始化
void GasSensorOffSet_Init(uint16_t* OffSet, uint16_t AdcData)
{
  *OffSet = AdcData + ZeroOffSetData;
}

//指拨零点值更新
void GasSensorOffSetData_Update(uint16_t* PresentData, uint16_t AdcData, MC_ErrorCode_Struct_t* p_MC_ErrorCode)
{
  static uint16_t Array[50];
	static TrueOrFalse_Flag_Struct_t IsArrayFullFalg = FALSE;
	uint8_t i = 0;
	uint16_t TempData;
	static uint32_t ErrorDelayTimeCnt = 0;
	
	//刚开机时，数组未存满
	if(IsArrayFullFalg == FALSE)
	{
	  Array[i++] = AdcData;
		if(i >= 50)
		{
		  IsArrayFullFalg = TRUE;
			i = 0;
		}
	}
	//存满后取滑动均值
	else
	{
	  TempData = MovingAverageFilter(AdcData, Array, sizeof(Array) / 2) + ZeroOffSetData;
		if(TempData < *PresentData)
		{
		  //更新零点值
			*PresentData = TempData;
		}
	}
	//判断零点是否超出范围
	if(*PresentData <= 1500)
	{
	  ErrorDelayTimeCnt = HAL_GetTick();
		p_MC_ErrorCode->ERROR_Bit.Fault_GasSensor = 0;
	}
	if((HAL_GetTick() - ErrorDelayTimeCnt) > 10000)
	{
	  p_MC_ErrorCode->ERROR_Bit.Fault_GasSensor = 1;
	}
}