Android Question int transfer to byte ?

[jinyistudio]

Private Sub GenRtu(buff() As Byte,len As Int) As Int
    Dim crc,n1,retn As Int
    crc=GenCRC(buff,len)
    retn=0
    For n1=0 To len-1
        TxPkt(retn)=buff(n1)
        retn=retn+1
    Next
    TxPkt(retn+0)=Bit.AND(Bit.ShiftRight(crc,8),0x0000ff) ' crc high
    TxPkt(retn+1)=Bit.AND(crc,0xff)     ' crc low
    Return retn+2
End Sub

crc is int, Txpkt is a array of byte, Why Txpkt(retn+0) is 16bits not 8btes ??

 

[Erel]

How is TxPkt declared?

 

[jinyistudio]

How is TxPkt declared?

Sorry !

Private TxPkt(128) As Byte

 

[Erel]

Bytes hold values between -128 to 127 (8 bits). They cannot hold 16 bits.