//-------------------------------------------------------//
//        Project Code : CodeLibrary
//           File Name : Ntc.cpp
//          Created on : 2022. 11. 5.
//         Description : 테이블 방식의 NTC 온도계산 프로그램
//              Author : KimJeongWoo
//  Last modified Date :
//-------------------------------------------------------//


#include "CodeLibMath.h"
#include "Ntc.h"


void NtcTableReadTemp(float *NtcTemp, int *AdcData, struct sNTCTABLE *NtcTable)
{

    if (*NtcTemp <= 0)
    {
        if (*AdcData <= NtcTable->Table[0])    	*NtcTemp = 0;
        else                              		*NtcTemp = 1;
    }
    else if (*NtcTemp >= NtcTable->Size)
    {
        if (*AdcData > NtcTable->Table[NtcTable->Size])    	*NtcTemp = NtcTable->Size - 1;
        else                                     			*NtcTemp = NtcTable->Size;
    }
    else
    {
        if (*AdcData < NtcTable->Table[(Uint16) *NtcTemp - 1])     *NtcTemp = *NtcTemp - 1;
        else if (*AdcData >= NtcTable->Table[(Uint16) *NtcTemp])   *NtcTemp = *NtcTemp + 1;
    }
}

//--------------------------Table 생성코드---------------------------------//
//todo Beta 값 기반인데 나중에 Stain-Heart Heart 방정식으로 변경하면 좋을 듯?
//

void NtcTableGen(struct sNTCTABLE *Ntc)
{
    int i = 0.;
    float Rntc = 0.;
    float Vntc = 0.;

    for ( i = 0; i < Ntc->Size; i++)
    {
        Rntc = (Ntc->R25 * expf(Ntc->Beta * (1. / (273.15 + (float)i) - 1. / 298.15)));
        Vntc = (Ntc->Vset * (Ntc->Rset / (Rntc + Ntc->Rset)));

        //ADC 12bit, 3Vref
        Ntc->Table[i] = 4095. * (Vntc / 3.);
    }
}

//----------------------------------------------------------------------------------------------------//