#include "../main/SystemInclude.h"

// for compute buffer
float RRExtGain;
u16 RRExtGainRes;

/******************************************************************************/
void RHCircuitParameterInit(void)
{
   // A type external gain res
   RRExtGainRes = (u16)ReadParameterFromEEPROM(RR_GAINRES, RR_GAINRES_WIDTH, RR_GAINRES_DEFAULT);
   RRExtGain  = (float)RR_OPGAIN_RES;
   RRExtGain /= (float)RRExtGainRes;   
   RRExtGain += 1.0;
   RRExtGain  = 1.0/RRExtGain;
}

/******************************************************************************/
void ComputeRRParameter(void)
{ 
   float tmpRR;
 
   //===========================================================================
   // compute VRR ADC INPUT
   tmpSLA  = (u32)voltageDetected[RRIDX];
   tmpSLA -= (u32)32768;
   tmpRR  = (float)VRR_VREF;
   tmpRR *= (float)tmpSLA;
   tmpRR += (float)VRR_VDC;
   voltageDetected[NVRR] = (u16)tmpRR;
   
   //===========================================================================
   // compute RR
   tmpRR *= (float)RRExtGain; 
   tmpRR  = (VRR_RREF*tmpRR)/(VREF-tmpRR);
   
   voltageDetected[NRR]  = (u16)tmpRR; 
   voltageDetected[NRR]  = MovingAverage(voltageDetected[NRR], 30, NRR); 
}