static internal void ReadPowerMilliWattConverter(ref byte[] dataPacketReceived, out byte[] interpretedDataPacket)
{
// Step 1: Interpret the received data
// Based on the linear conversion model in the PMBus spec
byte dataHighByte;
byte dataLowByte;
int NinTwosComplement;
int YinTowsComplement;
int N;
int Y;
int poutReadingInMilliWatts;
const int bitCountOfN = 5;
const int bitCountOfY = 11;
const byte numMSBsToEncodeN = bitCountOfN;
dataHighByte = dataPacketReceived[1];
dataLowByte = dataPacketReceived[0];
NinTwosComplement = dataHighByte >> (8 - numMSBsToEncodeN);
YinTowsComplement = (BitwiseOperationUtil.MaskOffMSBs(dataHighByte, numMSBsToEncodeN) << 8) | dataLowByte;
N = NumberConversionUtil.ConvertFromTwosComplement(NinTwosComplement, bitCountOfN);
Y = NumberConversionUtil.ConvertFromTwosComplement(YinTowsComplement, bitCountOfY);
// Power (milliwatts) = Y * pow(2, N) * 1000.0
poutReadingInMilliWatts = (int)((double)Y * Math.Pow(2, N) * 1000.0);
interpretedDataPacket = BitConverter.GetBytes(poutReadingInMilliWatts);
}
/// <summary>
/// Convert the Linear Data Format based on the linear conversion model in the PMBus spec Rev. 1.1 Section 7.1
/// </summary>
/// <param name="dataPacketReceived">The data packet received.</param>
/// <param name="interpretedDataPacket">The converted data packet.</param>
static internal void PmBusLinearDataFormatConverter(ref byte[] dataPacketReceived, out byte[] interpretedDataPacket)
{
// Step 1: Interpret the received data
byte dataHighByte;
byte dataLowByte;
int NinTwosComplement;
int YinTowsComplement;
int N;
int Y;
int convertedValue;
const int bitCountOfN = 5;
const int bitCountOfY = 11;
const byte numMSBsToEncodeN = bitCountOfN;
dataHighByte = dataPacketReceived[1];
dataLowByte = dataPacketReceived[0];
NinTwosComplement = dataHighByte >> (8 - numMSBsToEncodeN);
YinTowsComplement = (BitwiseOperationUtil.MaskOffMSBs(dataHighByte, numMSBsToEncodeN) << 8) | dataLowByte;
N = NumberConversionUtil.ConvertFromTwosComplement(NinTwosComplement, bitCountOfN);
Y = NumberConversionUtil.ConvertFromTwosComplement(YinTowsComplement, bitCountOfY);
// Converted Value = Y * pow(2, N)
convertedValue = (int)((double)Y * Math.Pow(2, N));
interpretedDataPacket = BitConverter.GetBytes(convertedValue);
}
