private void Parse(byte[] packet)
{
if (packet[0] >> 4 != 0xE)
{
return;
}
var forcrc = new byte[63];
Array.ConstrainedCopy(packet, 0, forcrc, 0, 63);
if (packet[63] != Crc8Calculator.GetCRC8(forcrc))
{
return;
}
//все правильно - это пакет
var a = packet[2] >> 4;
var b = packet[4] >> 4;
var idx = a + (b << 4);
switch (idx)
{
case 10:
{
_repsirationRate = GetIdxParamData(packet);
break;
}
case 12:
{
_heartRate = GetIdxParamData(packet);
break;
}
case 13:
{
_spo2 = GetIdxParamData(packet);
break;
}
case 17:
{
_systolicArterialPressure = GetIdxParamData(packet);
break;
}
case 18:
{
_diastolicArterialPressure = GetIdxParamData(packet);
break;
}
case 19:
{
_averageArterialPressure = GetIdxParamData(packet);
break;
}
case 22:
{
StatusParseTest(packet);
break;
}
}
}
public Tuple <PatientCommonParams, PatientPressureParams> GetPatientCommonParams(byte[] message)
{
int iterator = 0;
int startPacketIndex = 0;
short heartRate = 0;
short repsirationRate = 0;
short spo2 = 0;
short systolicArterialPressure = 0;
short diastolicArterialPressure = 0;
short averageArterialPressure = 0;
//синхронизация
bool isFindStartPacket = false;
while (iterator < message.Length - 65 && !isFindStartPacket)
{
if (message[iterator] >> 4 == 0xE)
{
byte[] forcrc = new byte[63];
Array.ConstrainedCopy(message, iterator, forcrc, 0, 63);
if (message[iterator + 63] == Crc8Calculator.GetCRC8(forcrc))
{
//все правильно - нашли пакет
startPacketIndex = iterator;
isFindStartPacket = true;
}
}
iterator++;
}
for (int i = startPacketIndex; i < message.Length - 65; i++)
{
byte[] forcrc = new byte[63];
Array.ConstrainedCopy(message, i, forcrc, 0, 63);
if (message[i + 63] == Crc8Calculator.GetCRC8(forcrc))
{
//get IDX
int a = message[i + 2] >> 4;
int b = message[i + 4] >> 4;
int idx = a + (b << 4);
if (idx == 10)
{
int valueLow = message[i + 6] >> 4;
int valueHigh =
message[i + 8] >>
4; //todo работает только для чисел меньше 256 - там так то еще 2 куска параметров
repsirationRate = (short)(valueLow + (valueHigh << 4));
}
if (idx == 12)
{
int valueLow = message[i + 6] >> 4;
int valueHigh = message[i + 8] >> 4;
heartRate = (short)(valueLow + (valueHigh << 4));
}
if (idx == 13)
{
int valueLow = message[i + 6] >> 4;
int valueHigh = message[i + 8] >> 4;
spo2 = (short)(valueLow + (valueHigh << 4));
}
if (idx == 17)
{
int valueLow = message[i + 6] >> 4;
int valueHigh = message[i + 8] >> 4;
systolicArterialPressure = (short)(valueLow + (valueHigh << 4));
}
if (idx == 18)
{
int valueLow = message[i + 6] >> 4;
int valueHigh = message[i + 8] >> 4;
diastolicArterialPressure = (short)(valueLow + (valueHigh << 4));
}
if (idx == 19)
{
int valueLow = message[i + 6] >> 4;
int valueHigh = message[i + 8] >> 4;
averageArterialPressure = (short)(valueLow + (valueHigh << 4));
}
i += 64; //todo магические числа
}
} //todo проверка внутри пакета на crc + на попадение в допустимые рамки значений
// byte[] forcrc = new byte[63];
//Array.ConstrainedCopy(message, iterator, forcrc, 0, 63);
//todo бла бла получили числа - дабавили в параметр
return(new Tuple <PatientCommonParams, PatientPressureParams>
(new PatientCommonParams(heartRate, repsirationRate, spo2),
new PatientPressureParams(systolicArterialPressure, diastolicArterialPressure, averageArterialPressure)));
}