Files
DexcomBluetoothUploader/lib/nightscout/com/eveningoutpost/dexdrip/G5Model/SessionStartTxMessage.java
2020-07-18 21:44:27 -04:00

58 lines
1.8 KiB
Java

package com.eveningoutpost.dexdrip.G5Model;
import com.eveningoutpost.dexdrip.Models.JoH;
import com.eveningoutpost.dexdrip.Models.UserError;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import lombok.Getter;
// created by jamorham
public class SessionStartTxMessage extends BaseMessage {
final byte opcode = 0x26;
@Getter
private final long startTime;
@Getter
private final int dexTime;
public SessionStartTxMessage(int dexTime) {
this((int) (JoH.tsl() / 1000), dexTime);
}
public SessionStartTxMessage(long startTime, int dexTime) {
this(startTime, dexTime, null);
}
public SessionStartTxMessage(long startTime, int dexTime, String code) {
this.startTime = startTime;
this.dexTime = dexTime;
final boolean using_g6 = (code != null);
data = ByteBuffer.allocate(code == null || new G6CalibrationParameters(code).isNullCode() ? (using_g6 ? 13 : 11) : 17);
data.order(ByteOrder.LITTLE_ENDIAN);
data.put(opcode);
data.putInt(dexTime);
data.putInt((int) (startTime / 1000));
if (code != null) {
final G6CalibrationParameters params = new G6CalibrationParameters(code);
if (params.isValid() && !params.isNullCode()) {
data.putShort((short) params.getParamA());
data.putShort((short) params.getParamB());
} else {
if (!params.isValid()) {
throw new IllegalArgumentException("Invalid G6 code in SessionStartTxMessage");
}
}
}
if (using_g6) {
data.putShort((short) 0x0000);
}
appendCRC();
UserError.Log.d(TAG, "SessionStartTxMessage dbg: " + JoH.bytesToHex(byteSequence));
}
}