public static JFTag[] decodeMultiPacket(byte[] data, int tagcnt)
{
int cmd = LE.getuint16(data, 0);
int id = LE.getuint16(data, 2);
int len = LE.getuint32(data, 4);
int cnt = LE.getuint16(data, 8);
if (cnt != tagcnt)
{
return(null);
}
JFTag[] tags = new JFTag[tagcnt];
int pos = 10;
for (int a = 0; a < tagcnt; a++)
{
tags[a] = new JFTag(null);
int type = LE.getuint16(data, pos);
pos += 2;
int datalen = LE.getuint16(data, pos);
pos += 2;
JFTag tag = new JFTag(null);
tag.data = Arrays <byte> .CopyOf(data, pos, pos + datalen);
pos += datalen;
}
return(tags);
}
public static byte[] makeReadPacket(JFTag tag)
{
int strlen = tag.tag.Length;
byte[] data = new byte[8 + 2 + 1 + strlen];
LE.setuint16(data, 0, 0x0003); //read tag cmd
LE.setuint16(data, 2, 0x1234); //unique id
LE.setuint32(data, 4, 2 + strlen); //data Length
LE.setuint16(data, 8, 1); //count
LE.setuint8(data, 10, strlen); //strlen
Arrays <byte> .Copy(tag.tag.ToByteArray(), 0, data, 11, strlen);
return(data);
}
public static JFTag decodePacket(byte[] data)
{
int cmd = LE.getuint16(data, 0);
int id = LE.getuint16(data, 2);
int len = LE.getuint32(data, 4);
int cnt = LE.getuint16(data, 8);
if (cnt != 1)
{
return(null);
}
int type = LE.getuint16(data, 10);
int size = LE.getuint16(data, 12);
int datalen = len - 6;
JFTag tag = new JFTag(null);
tag.data = Arrays <byte> .CopyOf(data, 12, 12 + datalen);
return(tag);
}
public static byte[] makeWritePacket(JFTag tag, byte[] tagdata)
{
int strlen = tag.tag.Length;
byte[] data = new byte[8 + 2 + 1 + strlen + 2 + 2 + tagdata.Length];
LE.setuint16(data, 0, 0x0004); //write tag cmd
LE.setuint16(data, 2, 0x1234); //unique id
LE.setuint32(data, 4, 2 + strlen); //data Length
LE.setuint16(data, 8, 1); //count
LE.setuint8(data, 10, strlen); //strlen
Arrays <byte> .Copy(tag.tag.ToByteArray(), 0, data, 11, strlen);
int pos = 11 + strlen;
LE.setuint16(data, pos, tag.type); //tagtype
pos += 2;
LE.setuint16(data, pos, tagdata.Length); //tag size
pos += 2;
Arrays <byte> .Copy(tagdata, 0, data, pos, tagdata.Length);
return(data);
}